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new macros to reduce kludges
This commit is contained in:
David MacKenzie
parent
5754f5b478
commit
01cddb594a
3
NEWS
3
NEWS
@ -19,6 +19,9 @@ Major changes in release 2.0:
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* AC_MSG_CHECKING and AC_MSG_RESULT to print test results, on a single line,
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whether or not the test succeeds. They obsolete AC_CHECKING and AC_VERBOSE.
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* AC_SUBST_FILE, to insert one file into another.
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* AC_PROG_CC_ANSI to try to put the C compiler into ANSI C mode.
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* AC_FUNC_STRFTIME, to find strftime even if it's in -lintl.
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* AC_FUNC_GETMNTENT, to find getmntent even if it's in -lsun or -lseq.
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** Changed macros:
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* Many macros renamed systematically, but old names are accepted for
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9
TODO
9
TODO
@ -4,10 +4,8 @@ Things it might be nice to do someday:
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------------------------------------------------------------------------------
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* Replace the current ad-hoc macros for Dynix, SCO, ISC, etc.
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Perhaps there should be macros for certain functions (statfs, wait) or
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classes of functions (POSIX, NIS) that do everything necessary, instead.
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Select the right C compiler and POSIX/ANSI C options automatically.
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* Add AC_PROG_CC_POSIX to replace the current ad-hoc macros for AIX,
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Minix, ISC, etc.
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------------------------------------------------------------------------------
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@ -36,8 +34,7 @@ Select the right C compiler and POSIX/ANSI C options automatically.
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------------------------------------------------------------------------------
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* Look at Jim Avera's code to allow [ and ] in egrep patterns and
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AC_DEFINE args.
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* Allow [ and ] in egrep patterns and AC_DEFINE args.
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------------------------------------------------------------------------------
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19
acgeneral.m4
19
acgeneral.m4
@ -587,17 +587,17 @@ AC_DEFUN(AC_ARG_PROGRAM,
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if test -n "${program_transform_name}"; then
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# Double any \ or $.
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echo 's,\\,\\\\,g; s,\$,$$,g' > conftestsed
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program_transform_name="-e `echo ${program_transform_name} | sed -f conftestsed`"
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program_transform_name="`echo ${program_transform_name}|sed -f conftestsed`"
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rm -f conftestsed
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fi
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test "${program_prefix}" != NONE &&
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program_transform_name="-e s,^,${program_prefix}, ${program_transform_name}"
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program_transform_name="s,^,${program_prefix},; ${program_transform_name}"
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# Use a double $ so make ignores it.
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test "${program_suffix}" != NONE &&
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program_transform_name="-e s,\$\$,${program_suffix}, ${program_transform_name}"
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program_transform_name="s,\$\$,${program_suffix},; ${program_transform_name}"
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# sed with no file args requires a program.
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test "${program_transform_name}" = "" && program_transform_name="-e s,x,x,"
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test "${program_transform_name}" = "" && program_transform_name="s,x,x,"
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AC_SUBST(program_transform_name)dnl
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])
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@ -701,11 +701,6 @@ NONE---*---* | *---NONE---* | *---*---NONE) ;;
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*) AC_MSG_ERROR(can only configure for one host and one target at a time) ;;
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esac
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# Make sure we can run config.sub.
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if ${ac_config_sub} sun4 >/dev/null 2>&1; then :
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else AC_MSG_ERROR(can not run ${ac_config_sub})
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fi
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AC_CANONICAL_HOST
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AC_CANONICAL_TARGET
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AC_CANONICAL_BUILD
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@ -718,6 +713,12 @@ dnl Subroutines of AC_CANONICAL_SYSTEM.
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AC_DEFUN(AC_CANONICAL_HOST,
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[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
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# Make sure we can run config.sub.
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if ${ac_config_sub} sun4 >/dev/null 2>&1; then :
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else AC_MSG_ERROR(can not run ${ac_config_sub})
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fi
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AC_MSG_CHECKING(host system type)
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host_alias=$host
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@ -61,13 +61,7 @@ AC_DEFUN(AC_CONST, [indir([AC_C_CONST])])dnl
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AC_DEFUN(AC_LONG_FILE_NAMES, [indir([AC_SYS_LONG_FILE_NAMES])])dnl
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AC_DEFUN(AC_RESTARTABLE_SYSCALLS, [indir([AC_SYS_RESTARTABLE_SYSCALLS])])dnl
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AC_DEFUN(AC_FIND_X, [indir([AC_PATH_X])])dnl
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AC_DEFUN(AC_FIND_X_XMKMF, [indir([AC_PATH_X_XMKMF])])dnl
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AC_DEFUN(AC_FIND_X_DIRECT, [indir([AC_PATH_X_DIRECT])])dnl
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AC_DEFUN(AC_FIND_XTRA, [indir([AC_PATH_XTRA])])dnl
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AC_DEFUN(AC_AIX, [indir([AC_OS_AIX])])dnl
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AC_DEFUN(AC_MINIX, [indir([AC_OS_MINIX])])dnl
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AC_DEFUN(AC_ISC_POSIX, [indir([AC_OS_ISC])])dnl
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AC_DEFUN(AC_XENIX_DIR, [indir([AC_OS_XENIX])])dnl
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AC_DEFUN(AC_SCO_INTL, [indir([AC_OS_SCO])])dnl
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AC_DEFUN(AC_IRIX_SUN, [indir([AC_OS_IRIX])])dnl
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AC_DEFUN(AC_DYNIX_SEQ, [indir([AC_OS_DYNIX])])dnl
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106
acspecific.m4
106
acspecific.m4
@ -150,6 +150,33 @@ Autoconf TCGETA],
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fi
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])
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define(AC_PROG_CC_ANSI,
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[AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
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AC_CACHE_VAL(ac_cv_prog_cc_ansi,
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[ac_cv_prog_cc_ansi=no
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ac_save_CFLAGS="$CFLAGS"
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# Don't try gcc -ansi; that turns off useful extensions and
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# breaks some systems' header files.
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# AIX -qlanglvl=ansi
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# Ultrix and OSF/1 -std1
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# HP-UX -Aa
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# SVR4 -Xc
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for ac_arg in "" -qlanglvl=ansi -std1 -Aa -Xc
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do
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CFLAGS="$ac_save_CFLAGS $ac_arg"
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dnl Don't use CPP directly in case it doesn't take these options.
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AC_TRY_LINK(,
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[#if !defined(__STDC__) || __STDC__ != 1
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notansi(); /* Produce a link error if not ANSI C. */
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#endif
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], [ac_cv_prog_cc_ansi=$ac_arg; break])
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done
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CFLAGS="$ac_save_CFLAGS"
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])
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AC_MSG_RESULT($ac_cv_prog_cc_ansi)
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test "$ac_cv_prog_cc_ansi" != no && CC="$CC $ac_cv_prog_cc_ansi"
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])
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AC_DEFUN(AC_PROG_CC_C_O,
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[if test "x$CC" != xcc; then
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AC_MSG_CHECKING(whether $CC and cc understand -c and -o together)
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@ -447,7 +474,7 @@ AC_DEFUN(AC_USG,
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[AC_OBSOLETE([$0],
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[; instead use AC_CHECK_HEADERS(string.h) and HAVE_STRING_H])dnl
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AC_MSG_CHECKING([for BSD string and memory functions])
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AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);], ,
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AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);],
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[AC_MSG_RESULT(yes); AC_DEFINE(USG)], [AC_MSG_RESULT(no)])])
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@ -484,6 +511,12 @@ AC_DEFUN(AC_HEADER_DIRENT,
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[ac_header_dirent=no
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AC_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h,
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[ac_header_dirent=$ac_hdr; break])
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# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix,
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# and -lx contains other useful things as well. (FIXME what are they?)
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if test $ac_header_dirent = dirent.h; then
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AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
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fi
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AC_CHECK_LIB(x, main, LIBS="$LIBS -lx")
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])
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dnl Like AC_CHECK_HEADER, except also make sure that HEADER-FILE
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@ -518,20 +551,6 @@ changequote([, ])dnl
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AC_DEFINE_UNQUOTED(${ac_tr_hdr}) $2])dnl
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done])
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AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
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[AC_REQUIRE([AC_HEADER_DIRENT])dnl
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AC_MSG_CHECKING(whether closedir returns void)
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AC_CACHE_VAL(ac_cv_func_closedir_void,
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[AC_TRY_RUN([#include <sys/types.h>
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#include <$ac_header_dirent>
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int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
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ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes)])dnl
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AC_MSG_RESULT($ac_cv_func_closedir_void)
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if test $ac_cv_func_closedir_void = yes; then
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AC_DEFINE(CLOSEDIR_VOID)
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fi
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])
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dnl Obsolete.
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AC_DEFUN(AC_DIR_HEADER,
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[ac_header_dirent=no
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@ -689,6 +708,20 @@ AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal)
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dnl ### Checks for functions
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AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
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[AC_REQUIRE([AC_HEADER_DIRENT])dnl
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AC_MSG_CHECKING(whether closedir returns void)
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AC_CACHE_VAL(ac_cv_func_closedir_void,
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[AC_TRY_RUN([#include <sys/types.h>
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#include <$ac_header_dirent>
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int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
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ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes)])dnl
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AC_MSG_RESULT($ac_cv_func_closedir_void)
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if test $ac_cv_func_closedir_void = yes; then
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AC_DEFINE(CLOSEDIR_VOID)
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fi
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])
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AC_DEFUN(AC_FUNC_MMAP,
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[AC_MSG_CHECKING(for working mmap)
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AC_CACHE_VAL(ac_cv_func_mmap,
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@ -1174,6 +1207,17 @@ if test $ac_cv_func_setvbuf_reversed = yes; then
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fi
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])
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AC_DEFUN(AC_FUNC_GETMNTENT,
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[# getmntent is in -lsun on Irix 4, -lseq on PTX.
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AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
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AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
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AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
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AC_DEFUN(AC_FUNC_STRFTIME,
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[# strftime is in -lintl on SCO UNIX.
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AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
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AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)])])
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dnl ### Checks for structure members
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@ -1323,7 +1367,7 @@ fi
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])
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AC_DEFUN(AC_INT_16_BITS,
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[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])
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[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])dnl
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AC_MSG_CHECKING(whether int is 16 bits)
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AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
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[AC_MSG_RESULT(yes)
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@ -1331,7 +1375,7 @@ AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
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])
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AC_DEFUN(AC_LONG_64_BITS,
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[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])
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[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])dnl
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AC_MSG_CHECKING(whether long int is 64 bits)
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AC_TRY_RUN([main() { exit(sizeof(long int) != 8); }],
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[AC_MSG_RESULT(yes)
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@ -1740,7 +1784,7 @@ else
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# msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
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# to get the SysV transport functions.
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# Not sure which flavor of 386 Unix this is, but it seems harmless to
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# Not sure which flavor of 386 UNIX this is, but it seems harmless to
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# check for it.
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AC_CHECK_LIB(nsl, t_accept, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl"])
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@ -1777,7 +1821,6 @@ AC_DEFUN(AC_OS_MINIX,
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[AC_BEFORE([$0], [AC_TRY_LINK])dnl
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AC_BEFORE([$0], [AC_TRY_RUN])dnl
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AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=)
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# The Minix shell can not assign to the same variable on the same line!
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if test "$MINIX" = yes; then
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AC_DEFINE(_POSIX_SOURCE)
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AC_DEFINE(_POSIX_1_SOURCE, 2)
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@ -1806,8 +1849,9 @@ else
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fi
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])
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AC_DEFUN(AC_OS_XENIX,
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[AC_REQUIRE([AC_DIR_HEADER])dnl
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AC_DEFUN(AC_XENIX_DIR,
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[AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
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AC_REQUIRE([AC_DIR_HEADER])dnl
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AC_MSG_CHECKING(for Xenix)
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AC_EGREP_CPP(yes,
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[#if defined(M_XENIX) && !defined(M_UNIX)
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@ -1815,21 +1859,23 @@ AC_EGREP_CPP(yes,
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#endif
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], [AC_MSG_RESULT(yes); XENIX=yes], [AC_MSG_RESULT(no); XENIX=])
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if test "$XENIX" = yes; then
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# Make sure -ldir precedes -lx.
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test $ac_header_dirent = dirent.h && LIBS="$LIBS -ldir"
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LIBS="$LIBS -lx"
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if test $ac_header_dirent != sys/ndir.h; then
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LIBS="-ldir $LIBS" # Make sure -ldir precedes -lx.
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fi
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fi
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])
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AC_DEFUN(AC_OS_SCO,
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[AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
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AC_DEFUN(AC_DYNIX_SEQ,
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[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
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AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
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])
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AC_DEFUN(AC_OS_IRIX,
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[AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
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AC_DEFUN(AC_IRIX_SUN,
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[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
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AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
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])
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AC_DEFUN(AC_OS_DYNIX,
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[AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
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AC_DEFUN(AC_SCO_INTL,
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[AC_OBSOLETE([$0], [; instead use AC_FUNC_STRFTIME])dnl
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AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
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])
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347
autoconf.texi
347
autoconf.texi
@ -185,7 +185,7 @@ Writing Tests
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* Testing Values and Files:: Checking strings and files.
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* Multiple Cases:: Tests for several possible values.
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* Defining Symbols:: Defining C preprocessor symbols.
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* Setting Variables:: Setting shell and output variables.
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* Setting Variables:: Setting variables in output files.
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* Printing Messages:: Notifying users of progress or problems.
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* Language Choice:: Selecting which language to use for testing.
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@ -266,7 +266,7 @@ Engineer!, said the engineer, because before making Light, God
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split the Chaos into Land and Water; it takes a hell of an
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engineer to handle that big amount of mud, and orderly separation
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of solids from liquids@dots{} The computer scientist shouted: And
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the Chaos, where do you think it was it coming from, hmm?
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the Chaos, where do you think it was coming from, hmm?
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---Anonymous
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@end display
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@ -832,7 +832,7 @@ script found by @code{AC_CONFIG_AUXDIR} is used. The subdirectory
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@code{configure} scripts are given the same command line options that
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were given to this @code{configure} script, with minor changes if needed
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(e.g., to adjust a relative path for the cache file or source
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directory). This macro also sets the shell and output variable
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directory). This macro also sets the output variable
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@code{subdirs} to the list of directories @samp{@var{dir} @dots{}}.
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@file{Makefile} rules can use this variable to determine which
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subdirectories to recurse into.
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@ -958,8 +958,22 @@ support providing a help string.
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@node Transforming Names, Versions, Package Options, Operation
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@section Transforming Program Names When Installing
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Autoconf supports giving @code{configure} the following command line
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options to change the names of programs being installed:
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Autoconf supports giving @code{configure} command line options to change
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the names of programs being installed. These transformations are useful
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with programs that can be part of a cross-compilation development
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environment. For example, a cross-assembler running on a Sun 4
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configured with @samp{--target=i960-vxworks} is normally installed as
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@file{i960-vxworks-as}, rather than @file{as}, which could be confused
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with a native Sun 4 assembler.
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You can also force a program name to begin with @file{g}, if you don't
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want GNU programs installed on your system to shadow system programs by
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the same name. For example, if GNU @code{make} used this mechanism, you
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could configure it with @samp{--program-prefix=g} and when you ran
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@samp{make install}, it would be installed as
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@file{/usr/local/bin/gmake}.
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The @code{configure} options are:
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@table @code
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@item --program-prefix=@var{prefix}
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@ -969,23 +983,27 @@ prepend @var{prefix} to the names;
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append @var{suffix} to the names;
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@item --program-transform-name=@var{expression}
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perform @code{sed} substitution @var{expression} on the names. The main
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use for this option is to prevent the automatic addition of a target
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name prefix to program names (see below) by giving an empty
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@var{expression}. As another possibility,
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@samp{--program-transform-name='s,^\(........\).*,\1.exe,'} could be used to
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truncate installed program names to 8 characters and append @file{.exe}.
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perform @code{sed} substitution @var{expression} on the names. For
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example, you could use
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@example
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--program-transform-name='s/^/g/; s/^gg/g/; s/^gless/less/'
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||||
@end example
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||||
@noindent
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to prepend a @samp{g} to most of the program names in a source tree,
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excepting those like @code{gdb} that already have one and those like
|
||||
@code{less} and @code{lesskey} that aren't GNU programs. (That is
|
||||
assuming that you have a source tree containing those programs that is
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set up to use this option.)
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@end table
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||||
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In order to use the values given to those options, @file{configure.in}
|
||||
In order to use the values given to these options, @file{configure.in}
|
||||
must call the macro @code{AC_ARG_PROGRAM}.
|
||||
|
||||
@defmac AC_ARG_PROGRAM
|
||||
@maindex ARG_PROGRAM
|
||||
@ovindex program_transform_name
|
||||
Place in output variable @code{program_transform_name} a
|
||||
sequence of @code{sed} commands for changing the names of installed
|
||||
programs.
|
||||
Place in output variable @code{program_transform_name} a sequence of
|
||||
@code{sed} commands for changing the names of installed programs.
|
||||
|
||||
If any of the above options are given to @code{configure}, program names
|
||||
are transformed accordingly. Otherwise, if @code{AC_CANONICAL_SYSTEM}
|
||||
@ -993,36 +1011,27 @@ has been called and a @samp{--target} value is given that differs from
|
||||
the host type (specified with @samp{--host} or defaulted by
|
||||
@code{config.sub}), the target type followed by a dash is used as a
|
||||
prefix. Otherwise, no program name transformation is done.
|
||||
|
||||
These transformations are useful with programs that can be part of a
|
||||
cross-compilation development environment. For example, a
|
||||
cross-assembler running on a Sun 4 configured with
|
||||
@samp{--target=i960-vxworks} is normally installed as
|
||||
@file{i960-vxworks-as}, rather than @file{as}, which could be confused
|
||||
with a native Sun 4 assembler.
|
||||
|
||||
They can also force a program name to begin with @file{g}, if you don't
|
||||
want GNU programs installed on your system to shadow system programs by
|
||||
the same name. For example, if GNU @code{make} used this macro, you
|
||||
could configure it with @samp{--program-prefix=g} and when you ran
|
||||
@samp{make install}, it would be installed as
|
||||
@file{/usr/local/bin/gmake}.
|
||||
|
||||
Use the variable @code{program_transform_name} as in this example for
|
||||
an assembler, compiled as @file{as.new}. The shell variable @code{t}
|
||||
is needed in case @code{program_transform_name} contains any shell
|
||||
special characters. With quoting and variable substitutions, whitespace
|
||||
still properly separates @code{sed} arguments, but other special
|
||||
characters have no effect.
|
||||
|
||||
@example
|
||||
program_transform_name=@@program_transform_name@@
|
||||
install: all
|
||||
name=`t='$(program_transform_name)'; echo as | sed $$t` ; \
|
||||
$(INSTALL_PROGRAM) as.new $(bindir)/$$name
|
||||
@end example
|
||||
@end defmac
|
||||
|
||||
Here is how to use the variable @code{program_transform_name} in a
|
||||
@file{Makefile.in}:
|
||||
|
||||
@example
|
||||
tn=@@program_transform_name@@
|
||||
install: all
|
||||
$(INSTALL_PROGRAM) myprog $(bindir)/`echo myprog|sed '$(tn)'`
|
||||
@end example
|
||||
|
||||
@noindent
|
||||
If you have more than one program to install, you can do it in a loop:
|
||||
|
||||
@example
|
||||
PROGRAMS=cat ls rm
|
||||
install:
|
||||
for p in $(PROGRAMS); do \
|
||||
$(INSTALL_PROGRAM) $$p $(bindir)/`echo $$p|sed '$(tn)'`; \
|
||||
done
|
||||
@end example
|
||||
|
||||
@node Versions, , Transforming Names, Operation
|
||||
@section Controlling Autoconf Versions
|
||||
@ -1095,11 +1104,6 @@ mean either add @samp{-D@var{name}=1} to the output variable
|
||||
header file, depending on whether @code{AC_CONFIG_HEADER} has been
|
||||
called. @xref{Output}, for more information on @code{AC_CONFIG_HEADER}.
|
||||
|
||||
Within each section below, the macros are listed in alphabetical order.
|
||||
The macros are generally named for the output variables or C
|
||||
preprocessor macros that they define; those names are based largely on
|
||||
what existing GNU programs use.
|
||||
|
||||
@menu
|
||||
* Alternative Programs:: Selecting between alternative programs.
|
||||
* Libraries:: Library archives that might be missing.
|
||||
@ -1178,10 +1182,19 @@ If the C compiler does not accept the @samp{-c} and @samp{-o} options
|
||||
simultaneously, define @code{NO_MINUS_C_MINUS_O}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CC_ANSI
|
||||
@maindex PROG_CC_ANSI
|
||||
@ovindex CC
|
||||
If the C compiler in not in ANSI C mode by default (it does not define
|
||||
@code{__STDC__} to be 1), try to add an option to output variable
|
||||
@code{CC} to make it so. This macro tries various options that select
|
||||
ANSI C on some system or another.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CPP
|
||||
@maindex PROG_CPP
|
||||
@ovindex CPP
|
||||
Set shell and output variable @code{CPP} to a command that runs the
|
||||
Set output variable @code{CPP} to a command that runs the
|
||||
C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}.
|
||||
It is only portable to run @code{CPP} on files with a @file{.c}
|
||||
extension.
|
||||
@ -1215,7 +1228,7 @@ for other compilers.
|
||||
@defmac AC_PROG_CXXCPP
|
||||
@maindex PROG_CXXCPP
|
||||
@ovindex CXXCPP
|
||||
Set shell and output variable @code{CXXCPP} to a command that runs the
|
||||
Set output variable @code{CXXCPP} to a command that runs the
|
||||
C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}.
|
||||
It is only portable to run @code{CXXCPP} on files with a @file{.c},
|
||||
@file{.C}, or @file{.cc} extension.
|
||||
@ -1277,7 +1290,7 @@ standard place. Otherwise set @code{LEX} to @samp{lex} and
|
||||
@maindex PROG_LN_S
|
||||
@ovindex LN_S
|
||||
If @samp{ln -s} works on the current filesystem (the operating system
|
||||
and filesystem support symbolic links), set shell and output
|
||||
and filesystem support symbolic links), set output
|
||||
variable @code{LN_S} to @samp{ln -s}, otherwise set it to @samp{ln}.
|
||||
@end defmac
|
||||
|
||||
@ -1445,16 +1458,14 @@ but defines a different set of C preprocessor macros to indicate which
|
||||
header file is found. This macro and the names it defines are
|
||||
considered obsolete. The names it defines are:
|
||||
|
||||
@c The printed table looks too spaced out with blank lines between the entries.
|
||||
@table @file
|
||||
@item dirent.h
|
||||
@code{DIRENT}
|
||||
|
||||
@item sys/ndir.h
|
||||
@code{SYSNDIR}
|
||||
|
||||
@item sys/dir.h
|
||||
@code{SYSDIR}
|
||||
|
||||
@item ndir.h
|
||||
@code{NDIR}
|
||||
@end table
|
||||
@ -1472,44 +1483,36 @@ define @code{VOID_CLOSEDIR}.
|
||||
Check for the following header files, and for the first one that is
|
||||
found and defines @samp{DIR}, define the listed C preprocessor macro:
|
||||
|
||||
@c The printed table looks too spaced out with blank lines between the entries.
|
||||
@table @file
|
||||
@item dirent.h
|
||||
@code{HAVE_DIRENT_H}
|
||||
|
||||
@item sys/ndir.h
|
||||
@code{HAVE_SYS_NDIR_H}
|
||||
|
||||
@item sys/dir.h
|
||||
@code{HAVE_SYS_DIR_H}
|
||||
|
||||
@item ndir.h
|
||||
@code{HAVE_NDIR_H}
|
||||
@end table
|
||||
|
||||
The directory library declarations in the source code should look
|
||||
something like the following, which assumes that you have also called
|
||||
@samp{AC_CHECK_HEADERS(unistd.h)}:
|
||||
something like the following:
|
||||
|
||||
@example
|
||||
@group
|
||||
#ifdef HAVE_UNISTD_H
|
||||
# include <sys/types.h>
|
||||
# include <unistd.h>
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_DIRENT_H
|
||||
#if HAVE_DIRENT_H
|
||||
# include <dirent.h>
|
||||
# define NAMLEN(dirent) (strlen((dirent)->d_name))
|
||||
#else
|
||||
# define dirent direct
|
||||
# define NAMLEN(dirent) ((dirent)->d_namlen)
|
||||
# ifdef HAVE_SYS_NDIR_H
|
||||
# if HAVE_SYS_NDIR_H
|
||||
# include <sys/ndir.h>
|
||||
# endif
|
||||
# ifdef HAVE_SYS_DIR_H
|
||||
# if HAVE_SYS_DIR_H
|
||||
# include <sys/dir.h>
|
||||
# endif
|
||||
# ifdef HAVE_NDIR_H
|
||||
# if HAVE_NDIR_H
|
||||
# include <ndir.h>
|
||||
# endif
|
||||
#endif
|
||||
@ -1520,6 +1523,8 @@ Using the above declarations, the program would declare variables to be
|
||||
type @code{struct dirent}, not @code{struct direct}, and would access
|
||||
the length of a directory entry name by passing a pointer to a
|
||||
@code{struct dirent} to the @code{NAMLEN} macro.
|
||||
|
||||
This macro also checks for the SCO Xenix @file{dir} and @file{x} libraries.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_HEADER_MAJOR
|
||||
@ -1908,13 +1913,21 @@ programs need to be installed specially on this system for
|
||||
@code{GETLOADAVG_PRIVILEGED}.
|
||||
|
||||
@item
|
||||
This macro always defines @code{NEED_SETGID}, for @code{make}. The
|
||||
value is @samp{true} if special installation is required, @samp{false}
|
||||
if not. If @code{NEED_SETGID} is @samp{true}, it sets @code{KMEM_GROUP}
|
||||
This macro sets the output variable @code{NEED_SETGID}. The value is
|
||||
@samp{true} if special installation is required, @samp{false} if not.
|
||||
If @code{NEED_SETGID} is @samp{true}, this macro sets @code{KMEM_GROUP}
|
||||
to the name of the group that should own the installed program.
|
||||
@end enumerate
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_GETMNTENT
|
||||
@maindex FUNC_GETMNTENT
|
||||
@cvindex HAVE_GETMNTENT
|
||||
Check for the @code{getmntent} in the @file{sun} and @file{seq}
|
||||
libraries, for Irix 4 and PTX, respectively. Then, if @code{getmntent} is
|
||||
available, define @code{HAVE_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_MMAP
|
||||
@maindex FUNC_MMAP
|
||||
@cvindex HAVE_MMAP
|
||||
@ -1939,6 +1952,13 @@ If the @code{strcoll} function exists and works correctly, define
|
||||
definitions of @code{strcoll}, which should not be used.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_STRFTIME
|
||||
@maindex FUNC_STRFTIME
|
||||
@cvindex HAVE_STRFTIME
|
||||
Check for @code{strftime} in the @file{intl} library, for SCO UNIX.
|
||||
Then, if @code{strftime} is available, define @code{HAVE_STRFTIME}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_UTIME_NULL
|
||||
@maindex FUNC_UTIME_NULL
|
||||
@cvindex HAVE_UTIME_NULL
|
||||
@ -2046,11 +2066,11 @@ example, @code{struct timeval} or @code{struct timezone} as well as
|
||||
@code{HAVE_SYS_TIME_H}.
|
||||
|
||||
@example
|
||||
#ifdef TIME_WITH_SYS_TIME
|
||||
#if TIME_WITH_SYS_TIME
|
||||
# include <sys/time.h>
|
||||
# include <time.h>
|
||||
#else
|
||||
# ifdef HAVE_SYS_TIME_H
|
||||
# if HAVE_SYS_TIME_H
|
||||
# include <sys/time.h>
|
||||
# else
|
||||
# include <time.h>
|
||||
@ -2136,17 +2156,6 @@ include it before any other header files, to prevent inconsistencies in
|
||||
declarations.)
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_CROSS
|
||||
@maindex C_CROSS
|
||||
If the C compiler being used does not produce executables that can run
|
||||
on the system where @code{configure} is being run, set the shell
|
||||
variable @code{cross_compiling} to @samp{yes}, otherwise @samp{no}.
|
||||
This information can be used by @code{AC_TRY_RUN} to determine whether
|
||||
to take a default action instead of trying to run a test program
|
||||
For more information on dealing with test programs and
|
||||
cross-compiling, @xref{Test Programs}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_INLINE
|
||||
@maindex C_INLINE
|
||||
@cvindex inline
|
||||
@ -2254,6 +2263,27 @@ their header files or libraries. These macros are warts; they should
|
||||
be replaced by a more systematic approach, based either on the
|
||||
functions they make available or the environments they provide.
|
||||
|
||||
@defmac AC_DYNIX_SEQ
|
||||
@maindex OS_DYNIX_SEQ
|
||||
If on PTX (Sequent UNIX), add @samp{-lseq} to output
|
||||
variable @code{LIBS}. This macro is obsolete; instead, use
|
||||
@code{AC_FUNC_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_IRIX_SUN
|
||||
@maindex IRIX_SUN
|
||||
If on IRIX (Silicon Graphics UNIX), add @samp{-lsun} to output variable
|
||||
@code{LIBS}. This macro is obsolete; instead, use
|
||||
@code{AC_FUNC_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_SCO_INTL
|
||||
@maindex SCO_INTL
|
||||
@ovindex LIBS
|
||||
If on SCO UNIX, add @samp{-lintl} to output variable @code{LIBS}.
|
||||
This macro is obsolete; instead, use @code{AC_FUNC_STRFTIME}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_AIX
|
||||
@maindex OS_AIX
|
||||
@cvindex _ALL_SOURCE
|
||||
@ -2261,23 +2291,6 @@ If on AIX, define @code{_ALL_SOURCE}. Allows the use of some BSD
|
||||
functions. Should be called before any macros that run the C compiler.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_DYNIX
|
||||
@maindex OS_DYNIX
|
||||
If on DYNIX/ptx (Sequent UNIX), add @samp{-lseq} to output
|
||||
variable @code{LIBS}. Allows use of some BSD system calls and
|
||||
@code{getmntent}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_IRIX
|
||||
@maindex OS_IRIX
|
||||
If on IRIX (Silicon Graphics UNIX), add @samp{-lsun} to output
|
||||
variable @code{LIBS}. Needed to get @code{getmntent}. At sites using
|
||||
Yellow Pages/NIS, it is also needed to get properly working
|
||||
@code{gethostby*}, @code{getpw*}, @code{getgr*}, @code{getnetby*}, and
|
||||
so on.
|
||||
@c (According to Garrett.Wollman@uvm.edu.)
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_ISC
|
||||
@maindex OS_ISC
|
||||
@cvindex _POSIX_SOURCE
|
||||
@ -2299,21 +2312,13 @@ If on Minix, define @code{_MINIX} and @code{_POSIX_SOURCE} and define
|
||||
facilities. Should be called before any macros that run the C compiler.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_SCO
|
||||
@maindex OS_SCO
|
||||
@defmac AC_XENIX_DIR
|
||||
@maindex XENIX_DIR
|
||||
@ovindex LIBS
|
||||
If on SCO UNIX, add @samp{-lintl} to output variable @code{LIBS}.
|
||||
Used to get @code{strftime}. It must be called before checking for
|
||||
@code{strftime}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_XENIX
|
||||
@maindex OS_XENIX
|
||||
@ovindex LIBS
|
||||
If on Xenix, add @samp{-lx} to output variable @code{LIBS}. Also,
|
||||
if @file{sys/ndir.h} is not being used, add @samp{-ldir} to @code{LIBS}.
|
||||
Needed when using the directory reading functions. This macro calls
|
||||
@code{AC_DIR_HEADER} if it has not been called already.
|
||||
If on Xenix, add @samp{-lx} to output variable @code{LIBS}. Also, if
|
||||
@file{dirent.h} is being used, add @samp{-ldir} to @code{LIBS}. This
|
||||
macro calls @code{AC_DIR_HEADER} if it hasn't been called already. It
|
||||
is obsolete; use @code{AC_HEADER_DIRENT} instead.
|
||||
@end defmac
|
||||
|
||||
@node Makefiles, Writing Tests, Existing Tests, Top
|
||||
@ -2543,7 +2548,7 @@ solve the problem.
|
||||
* Testing Values and Files:: Checking strings and files.
|
||||
* Multiple Cases:: Tests for several possible values.
|
||||
* Defining Symbols:: Defining C preprocessor symbols.
|
||||
* Setting Variables:: Setting shell and output variables.
|
||||
* Setting Variables:: Setting variables in output files.
|
||||
* Printing Messages:: Notifying users of progress or problems.
|
||||
* Language Choice:: Selecting which language to use for testing.
|
||||
@end menu
|
||||
@ -2680,6 +2685,13 @@ cross-compiling. A few of the macros distributed with Autoconf produce
|
||||
this warning message.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_CROSS
|
||||
@maindex C_CROSS
|
||||
If the C compiler being used does not produce executables that can run
|
||||
on the system where @code{configure} is being run, set the shell
|
||||
variable @code{cross_compiling} to @samp{yes}, otherwise @samp{no}.
|
||||
@end defmac
|
||||
|
||||
@menu
|
||||
* Alternatives:: Approaches preferred over test programs.
|
||||
* Guidelines:: General rules for writing test programs.
|
||||
@ -2966,35 +2978,26 @@ AC_DEFINE_UNQUOTED(config_machfile, "$@{machfile@}")
|
||||
@section Setting Variables
|
||||
|
||||
These macros help other macros to define variables that are used in the
|
||||
@code{configure} shell script and substituted into output files.
|
||||
@code{configure} shell script and substituted into output files. These
|
||||
variables are called @dfn{output variables}.
|
||||
|
||||
@defmac AC_SUBST (@var{variable})
|
||||
@maindex SUBST
|
||||
Substitute the variable @var{variable} when creating the output files
|
||||
(typically one or more @file{Makefile}s). This means replace instances
|
||||
of @samp{@@@var{variable}@@}, e.g. in @file{Makefile.in}, with the
|
||||
current value of the shell variable @var{variable}. The value of
|
||||
@var{variable} should not contain literal newlines. If this macro were
|
||||
not called, the value of @var{variable} would not be set in the output
|
||||
files, even though @code{configure} had figured out a value for it.
|
||||
|
||||
You can set or add to the value of @var{variable} in the usual shell
|
||||
way. For example, to add @samp{-ltermcap} to the value of the variable
|
||||
@code{LIBS}:
|
||||
|
||||
@example
|
||||
LIBS="$LIBS -ltermcap"
|
||||
@end example
|
||||
Substitute the variable @var{variable} into output files (typically one
|
||||
or more @file{Makefile}s). This means that @code{AC_OUTPUT} will
|
||||
replace instances of @samp{@@@var{variable}@@}, e.g. in
|
||||
@file{Makefile.in}, with the value that the shell variable
|
||||
@var{variable} has when @code{AC_OUTPUT} is called. The value of
|
||||
@var{variable} should not contain literal newlines.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_SUBST_FILE (@var{variable})
|
||||
@maindex SUBST_FILE
|
||||
Substitute the contents of the file named by shell variable
|
||||
@var{variable} into output variable @var{variable} when
|
||||
creating the output files (typically one or more @file{Makefile}s).
|
||||
This macro is useful for inserting @file{Makefile} fragments containing
|
||||
special dependencies or other @code{make} directives for particular host
|
||||
or target types into @file{Makefile}s.
|
||||
@var{variable} into output files (typically one or more
|
||||
@file{Makefile}s). This macro is useful for inserting @file{Makefile}
|
||||
fragments containing special dependencies or other @code{make}
|
||||
directives for particular host or target types into @file{Makefile}s.
|
||||
|
||||
For example, @file{configure.in} could contain:
|
||||
|
||||
@ -3430,7 +3433,7 @@ a suggestion for what to use instead of @var{this-macro-name}.
|
||||
A sample call is:
|
||||
|
||||
@example
|
||||
AC_OBSOLETE([$0], [; use AC_CHECK_HEADERS(unistd.h) instead])
|
||||
AC_OBSOLETE([$0], [; use AC_CHECK_HEADERS(unistd.h) instead])dnl
|
||||
@end example
|
||||
@end defmac
|
||||
|
||||
@ -3621,8 +3624,17 @@ example, @samp{decstation} can be given on the command line instead of
|
||||
@node Canonicalizing, System Name Variables, Specifying Names, Manual Configuration
|
||||
@section Getting the Canonical System Type
|
||||
|
||||
The following macros make the name of the system type available in
|
||||
@code{configure} scripts.
|
||||
The following macros make the system type available to @code{configure}
|
||||
scripts. They run the shell script @code{config.guess} to determine any
|
||||
values for the host, target, and build types that they need and the user
|
||||
did not specify on the command line. They run @code{config.sub} to
|
||||
canonicalize any aliases the user gave. If you use these macros, you
|
||||
must distribute those two shell scripts along with your source code.
|
||||
@xref{Output}, for information about the @code{AC_CONFIG_AUX_DIR} macro
|
||||
which you can use to control which directory @code{configure} looks for
|
||||
those scripts in. If you do not use either of these macros,
|
||||
@code{configure} ignores any @samp{--host}, @samp{--target}, and
|
||||
@samp{--build} options given to it.
|
||||
|
||||
@defmac AC_CANONICAL_HOST
|
||||
@maindex CANONICAL_HOST
|
||||
@ -3633,24 +3645,15 @@ a compiler toolchain.
|
||||
|
||||
@defmac AC_CANONICAL_SYSTEM
|
||||
@maindex CANONICAL_SYSTEM
|
||||
Set shell and output variables to the names of the canonical system
|
||||
types. If the user did not specify one or more of those values on the
|
||||
command line, run @code{config.guess} to determine them. Run
|
||||
@code{config.sub} to canonicalize any aliases the user gave. If you use
|
||||
this macro, you must distribute those two shell scripts along with your
|
||||
source code (@pxref{Output}, for information about the
|
||||
@code{AC_CONFIG_AUX_DIR} macro which you can use to control which
|
||||
directory @code{configure} looks for those scripts in). If you do not
|
||||
run this macro, @code{configure} ignores any @samp{--host}, etc. options
|
||||
given to it.
|
||||
Set output variables to the names of the canonical system
|
||||
types.
|
||||
@end defmac
|
||||
|
||||
@node System Name Variables, Using System Type, Canonicalizing, Manual Configuration
|
||||
@section System Name Variables
|
||||
|
||||
After calling @code{AC_CANONICAL_SYSTEM} or @code{AC_CANONICAL_HOST},
|
||||
the shell and output variables that contain the system type
|
||||
information are:
|
||||
the output variables that contain the system type information are:
|
||||
|
||||
@table @code
|
||||
@ovindex build
|
||||
@ -3853,15 +3856,20 @@ It is possible to set some cache values in the site file.
|
||||
If you are cross-compiling, it is impossible to check features that
|
||||
require running a test program. You could ``prime the cache'' by
|
||||
setting those values correctly for that system in
|
||||
@file{@var{exec_prefix}/lib/config.site}. The cache file is careful to
|
||||
not override any variables set in the site files. Similarly, you should
|
||||
not override command-line options in the site files. Your code should
|
||||
check that variables such as @code{prefix} and @code{cache_file} have
|
||||
their default values (as set near the top of @code{configure}) before
|
||||
changing them.
|
||||
@file{@var{exec_prefix}/lib/config.site}. To find out the names of the
|
||||
cache variables you need to set, look for shell variables with
|
||||
@samp{_cv_} in their names in the affected configure scripts, or in the
|
||||
Autoconf @code{m4} source code for those macros.
|
||||
|
||||
The cache file is careful to not override any variables set in the site
|
||||
files. Similarly, you should not override command-line options in the
|
||||
site files. Your code should check that variables such as @code{prefix}
|
||||
and @code{cache_file} have their default values (as set near the top of
|
||||
@code{configure}) before changing them.
|
||||
|
||||
Here is a sample file @file{/usr/share/local/gnu/lib/config.site}.
|
||||
@samp{configure --prefix=/usr/share/local/gnu} would read this file.
|
||||
@samp{configure --prefix=/usr/share/local/gnu} would read this file
|
||||
(if @code{CONFIG_SITE} is not set).
|
||||
|
||||
@example
|
||||
# config.site for configure
|
||||
@ -4021,6 +4029,9 @@ your @file{Makefile.in} files, so they can take advantage of the values
|
||||
of those variables in the environment when @code{configure} is run.
|
||||
Doing this isn't necessary, but it's a convenience for users.
|
||||
|
||||
Add @file{config.log} and @file{config.cache} to the list of files you
|
||||
remove in @code{distclean} targets.
|
||||
|
||||
If you have the following in @file{Makefile.in}:
|
||||
|
||||
@example
|
||||
@ -4114,6 +4125,12 @@ backslashes before quotes, you need to remove them. It now works
|
||||
predictably, and does not treat quotes (except backquotes) specially.
|
||||
@xref{Setting Variables}.
|
||||
|
||||
All of the boolean shell variables set by Autoconf macros now use
|
||||
@samp{yes} for the true value. Most of them use @samp{no} for false,
|
||||
though for backward compatibility some use the empty string instead. If
|
||||
you were relying on a shell variable being set to something like 1 or
|
||||
@samp{t} for true, you need to change your tests.
|
||||
|
||||
@node Changed Macro Writing, , Changed Results, Upgrading
|
||||
@section Changed Macro Writing
|
||||
|
||||
@ -4391,9 +4408,6 @@ removed because of limited usefulness
|
||||
@item AC_CROSS_CHECK
|
||||
@maindex CROSS_CHECK
|
||||
@code{AC_C_CROSS}
|
||||
@item AC_DYNIX_SEQ
|
||||
@maindex DYNIX_SEQ
|
||||
@code{AC_OS_DYNIX}
|
||||
@item AC_ERROR
|
||||
@maindex ERROR
|
||||
@code{AC_MSG_ERROR}
|
||||
@ -4433,9 +4447,6 @@ removed because of limited usefulness
|
||||
@item AC_INLINE
|
||||
@maindex INLINE
|
||||
@code{AC_C_INLINE}
|
||||
@item AC_IRIX_SUN
|
||||
@maindex IRIX_SUN
|
||||
@code{AC_OS_IRIX}
|
||||
@item AC_ISC_POSIX
|
||||
@maindex ISC_POSIX
|
||||
@code{AC_OS_ISC}
|
||||
@ -4499,9 +4510,6 @@ removed because of limited usefulness
|
||||
@item AC_RSH
|
||||
@maindex RSH
|
||||
removed because of limited usefulness
|
||||
@item AC_SCO_INTL
|
||||
@maindex SCO_INTL
|
||||
@code{AC_OS_SCO}
|
||||
@item AC_SETVBUF_REVERSED
|
||||
@maindex SETVBUF_REVERSED
|
||||
@code{AC_FUNC_SETVBUF_REVERSED}
|
||||
@ -4568,9 +4576,6 @@ removed because of limited usefulness
|
||||
@item AC_WORDS_BIGENDIAN
|
||||
@maindex WORDS_BIGENDIAN
|
||||
@code{AC_C_BIGENDIAN}
|
||||
@item AC_XENIX_DIR
|
||||
@maindex XENIX_DIR
|
||||
@code{AC_OS_XENIX}
|
||||
@item AC_YYTEXT_POINTER
|
||||
@maindex YYTEXT_POINTER
|
||||
@code{AC_DECL_YYTEXT}
|
||||
|
||||
@ -21,31 +21,35 @@ dnl
|
||||
include(acgeneral.m4)dnl
|
||||
builtin(include, acspecific.m4)dnl
|
||||
builtin(include, acoldnames.m4)dnl
|
||||
dnl
|
||||
dnl These are the alternate definitions of the acgeneral.m4 macros we want to
|
||||
dnl redefine. They produce strings in the output marked with "@@@" so we can
|
||||
dnl easily extract the information we want. The `#' at the end of the first
|
||||
dnl line of each definition seems to be necessary to prevent m4 from eating
|
||||
dnl the newline, which makes the @@@ not always be at the beginning of a line.
|
||||
dnl
|
||||
|
||||
dnl These are alternate definitions of some macros, which produce
|
||||
dnl strings in the output marked with "@@@" so we can easily extract
|
||||
dnl the information we want. The `#' at the end of the first line of
|
||||
dnl each definition seems to be necessary to prevent m4 from eating
|
||||
dnl the newline, which makes the @@@ not always be at the beginning of
|
||||
dnl a line.
|
||||
|
||||
define([AC_DEFINE],[#
|
||||
@@@syms="$syms $1"@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_DEFINE_UNQUOTED],[#
|
||||
@@@syms="$syms $1"@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_SIZEOF_TYPE],[#
|
||||
@@@types="$types,$1"@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_CHECK_FUNCS],[#
|
||||
@@@funcs="$funcs $1"@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_CHECK_HEADERS],[#
|
||||
@@@headers="$headers $1"@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_CHECK_HEADERS_DIRENT],[#
|
||||
@@@headers="$headers $1"@@@
|
||||
])
|
||||
define([AC_CONFIG_HEADER],[#
|
||||
@@@config_h=$1@@@
|
||||
])dnl
|
||||
])
|
||||
define([AC_CHECK_LIB], [#
|
||||
changequote(/,/)dnl
|
||||
define(/libname/, dnl
|
||||
@ -59,5 +63,4 @@ $3
|
||||
# If it was not found, we do:
|
||||
$4
|
||||
])
|
||||
])dnl
|
||||
dnl
|
||||
])
|
||||
|
||||
@ -185,7 +185,7 @@ Writing Tests
|
||||
* Testing Values and Files:: Checking strings and files.
|
||||
* Multiple Cases:: Tests for several possible values.
|
||||
* Defining Symbols:: Defining C preprocessor symbols.
|
||||
* Setting Variables:: Setting shell and output variables.
|
||||
* Setting Variables:: Setting variables in output files.
|
||||
* Printing Messages:: Notifying users of progress or problems.
|
||||
* Language Choice:: Selecting which language to use for testing.
|
||||
|
||||
@ -266,7 +266,7 @@ Engineer!, said the engineer, because before making Light, God
|
||||
split the Chaos into Land and Water; it takes a hell of an
|
||||
engineer to handle that big amount of mud, and orderly separation
|
||||
of solids from liquids@dots{} The computer scientist shouted: And
|
||||
the Chaos, where do you think it was it coming from, hmm?
|
||||
the Chaos, where do you think it was coming from, hmm?
|
||||
|
||||
---Anonymous
|
||||
@end display
|
||||
@ -832,7 +832,7 @@ script found by @code{AC_CONFIG_AUXDIR} is used. The subdirectory
|
||||
@code{configure} scripts are given the same command line options that
|
||||
were given to this @code{configure} script, with minor changes if needed
|
||||
(e.g., to adjust a relative path for the cache file or source
|
||||
directory). This macro also sets the shell and output variable
|
||||
directory). This macro also sets the output variable
|
||||
@code{subdirs} to the list of directories @samp{@var{dir} @dots{}}.
|
||||
@file{Makefile} rules can use this variable to determine which
|
||||
subdirectories to recurse into.
|
||||
@ -958,8 +958,22 @@ support providing a help string.
|
||||
@node Transforming Names, Versions, Package Options, Operation
|
||||
@section Transforming Program Names When Installing
|
||||
|
||||
Autoconf supports giving @code{configure} the following command line
|
||||
options to change the names of programs being installed:
|
||||
Autoconf supports giving @code{configure} command line options to change
|
||||
the names of programs being installed. These transformations are useful
|
||||
with programs that can be part of a cross-compilation development
|
||||
environment. For example, a cross-assembler running on a Sun 4
|
||||
configured with @samp{--target=i960-vxworks} is normally installed as
|
||||
@file{i960-vxworks-as}, rather than @file{as}, which could be confused
|
||||
with a native Sun 4 assembler.
|
||||
|
||||
You can also force a program name to begin with @file{g}, if you don't
|
||||
want GNU programs installed on your system to shadow system programs by
|
||||
the same name. For example, if GNU @code{make} used this mechanism, you
|
||||
could configure it with @samp{--program-prefix=g} and when you ran
|
||||
@samp{make install}, it would be installed as
|
||||
@file{/usr/local/bin/gmake}.
|
||||
|
||||
The @code{configure} options are:
|
||||
|
||||
@table @code
|
||||
@item --program-prefix=@var{prefix}
|
||||
@ -969,23 +983,27 @@ prepend @var{prefix} to the names;
|
||||
append @var{suffix} to the names;
|
||||
|
||||
@item --program-transform-name=@var{expression}
|
||||
perform @code{sed} substitution @var{expression} on the names. The main
|
||||
use for this option is to prevent the automatic addition of a target
|
||||
name prefix to program names (see below) by giving an empty
|
||||
@var{expression}. As another possibility,
|
||||
@samp{--program-transform-name='s,^\(........\).*,\1.exe,'} could be used to
|
||||
truncate installed program names to 8 characters and append @file{.exe}.
|
||||
perform @code{sed} substitution @var{expression} on the names. For
|
||||
example, you could use
|
||||
@example
|
||||
--program-transform-name='s/^/g/; s/^gg/g/; s/^gless/less/'
|
||||
@end example
|
||||
@noindent
|
||||
to prepend a @samp{g} to most of the program names in a source tree,
|
||||
excepting those like @code{gdb} that already have one and those like
|
||||
@code{less} and @code{lesskey} that aren't GNU programs. (That is
|
||||
assuming that you have a source tree containing those programs that is
|
||||
set up to use this option.)
|
||||
@end table
|
||||
|
||||
In order to use the values given to those options, @file{configure.in}
|
||||
In order to use the values given to these options, @file{configure.in}
|
||||
must call the macro @code{AC_ARG_PROGRAM}.
|
||||
|
||||
@defmac AC_ARG_PROGRAM
|
||||
@maindex ARG_PROGRAM
|
||||
@ovindex program_transform_name
|
||||
Place in output variable @code{program_transform_name} a
|
||||
sequence of @code{sed} commands for changing the names of installed
|
||||
programs.
|
||||
Place in output variable @code{program_transform_name} a sequence of
|
||||
@code{sed} commands for changing the names of installed programs.
|
||||
|
||||
If any of the above options are given to @code{configure}, program names
|
||||
are transformed accordingly. Otherwise, if @code{AC_CANONICAL_SYSTEM}
|
||||
@ -993,36 +1011,27 @@ has been called and a @samp{--target} value is given that differs from
|
||||
the host type (specified with @samp{--host} or defaulted by
|
||||
@code{config.sub}), the target type followed by a dash is used as a
|
||||
prefix. Otherwise, no program name transformation is done.
|
||||
|
||||
These transformations are useful with programs that can be part of a
|
||||
cross-compilation development environment. For example, a
|
||||
cross-assembler running on a Sun 4 configured with
|
||||
@samp{--target=i960-vxworks} is normally installed as
|
||||
@file{i960-vxworks-as}, rather than @file{as}, which could be confused
|
||||
with a native Sun 4 assembler.
|
||||
|
||||
They can also force a program name to begin with @file{g}, if you don't
|
||||
want GNU programs installed on your system to shadow system programs by
|
||||
the same name. For example, if GNU @code{make} used this macro, you
|
||||
could configure it with @samp{--program-prefix=g} and when you ran
|
||||
@samp{make install}, it would be installed as
|
||||
@file{/usr/local/bin/gmake}.
|
||||
|
||||
Use the variable @code{program_transform_name} as in this example for
|
||||
an assembler, compiled as @file{as.new}. The shell variable @code{t}
|
||||
is needed in case @code{program_transform_name} contains any shell
|
||||
special characters. With quoting and variable substitutions, whitespace
|
||||
still properly separates @code{sed} arguments, but other special
|
||||
characters have no effect.
|
||||
|
||||
@example
|
||||
program_transform_name=@@program_transform_name@@
|
||||
install: all
|
||||
name=`t='$(program_transform_name)'; echo as | sed $$t` ; \
|
||||
$(INSTALL_PROGRAM) as.new $(bindir)/$$name
|
||||
@end example
|
||||
@end defmac
|
||||
|
||||
Here is how to use the variable @code{program_transform_name} in a
|
||||
@file{Makefile.in}:
|
||||
|
||||
@example
|
||||
tn=@@program_transform_name@@
|
||||
install: all
|
||||
$(INSTALL_PROGRAM) myprog $(bindir)/`echo myprog|sed '$(tn)'`
|
||||
@end example
|
||||
|
||||
@noindent
|
||||
If you have more than one program to install, you can do it in a loop:
|
||||
|
||||
@example
|
||||
PROGRAMS=cat ls rm
|
||||
install:
|
||||
for p in $(PROGRAMS); do \
|
||||
$(INSTALL_PROGRAM) $$p $(bindir)/`echo $$p|sed '$(tn)'`; \
|
||||
done
|
||||
@end example
|
||||
|
||||
@node Versions, , Transforming Names, Operation
|
||||
@section Controlling Autoconf Versions
|
||||
@ -1095,11 +1104,6 @@ mean either add @samp{-D@var{name}=1} to the output variable
|
||||
header file, depending on whether @code{AC_CONFIG_HEADER} has been
|
||||
called. @xref{Output}, for more information on @code{AC_CONFIG_HEADER}.
|
||||
|
||||
Within each section below, the macros are listed in alphabetical order.
|
||||
The macros are generally named for the output variables or C
|
||||
preprocessor macros that they define; those names are based largely on
|
||||
what existing GNU programs use.
|
||||
|
||||
@menu
|
||||
* Alternative Programs:: Selecting between alternative programs.
|
||||
* Libraries:: Library archives that might be missing.
|
||||
@ -1178,10 +1182,19 @@ If the C compiler does not accept the @samp{-c} and @samp{-o} options
|
||||
simultaneously, define @code{NO_MINUS_C_MINUS_O}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CC_ANSI
|
||||
@maindex PROG_CC_ANSI
|
||||
@ovindex CC
|
||||
If the C compiler in not in ANSI C mode by default (it does not define
|
||||
@code{__STDC__} to be 1), try to add an option to output variable
|
||||
@code{CC} to make it so. This macro tries various options that select
|
||||
ANSI C on some system or another.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CPP
|
||||
@maindex PROG_CPP
|
||||
@ovindex CPP
|
||||
Set shell and output variable @code{CPP} to a command that runs the
|
||||
Set output variable @code{CPP} to a command that runs the
|
||||
C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}.
|
||||
It is only portable to run @code{CPP} on files with a @file{.c}
|
||||
extension.
|
||||
@ -1215,7 +1228,7 @@ for other compilers.
|
||||
@defmac AC_PROG_CXXCPP
|
||||
@maindex PROG_CXXCPP
|
||||
@ovindex CXXCPP
|
||||
Set shell and output variable @code{CXXCPP} to a command that runs the
|
||||
Set output variable @code{CXXCPP} to a command that runs the
|
||||
C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}.
|
||||
It is only portable to run @code{CXXCPP} on files with a @file{.c},
|
||||
@file{.C}, or @file{.cc} extension.
|
||||
@ -1277,7 +1290,7 @@ standard place. Otherwise set @code{LEX} to @samp{lex} and
|
||||
@maindex PROG_LN_S
|
||||
@ovindex LN_S
|
||||
If @samp{ln -s} works on the current filesystem (the operating system
|
||||
and filesystem support symbolic links), set shell and output
|
||||
and filesystem support symbolic links), set output
|
||||
variable @code{LN_S} to @samp{ln -s}, otherwise set it to @samp{ln}.
|
||||
@end defmac
|
||||
|
||||
@ -1445,16 +1458,14 @@ but defines a different set of C preprocessor macros to indicate which
|
||||
header file is found. This macro and the names it defines are
|
||||
considered obsolete. The names it defines are:
|
||||
|
||||
@c The printed table looks too spaced out with blank lines between the entries.
|
||||
@table @file
|
||||
@item dirent.h
|
||||
@code{DIRENT}
|
||||
|
||||
@item sys/ndir.h
|
||||
@code{SYSNDIR}
|
||||
|
||||
@item sys/dir.h
|
||||
@code{SYSDIR}
|
||||
|
||||
@item ndir.h
|
||||
@code{NDIR}
|
||||
@end table
|
||||
@ -1472,44 +1483,36 @@ define @code{VOID_CLOSEDIR}.
|
||||
Check for the following header files, and for the first one that is
|
||||
found and defines @samp{DIR}, define the listed C preprocessor macro:
|
||||
|
||||
@c The printed table looks too spaced out with blank lines between the entries.
|
||||
@table @file
|
||||
@item dirent.h
|
||||
@code{HAVE_DIRENT_H}
|
||||
|
||||
@item sys/ndir.h
|
||||
@code{HAVE_SYS_NDIR_H}
|
||||
|
||||
@item sys/dir.h
|
||||
@code{HAVE_SYS_DIR_H}
|
||||
|
||||
@item ndir.h
|
||||
@code{HAVE_NDIR_H}
|
||||
@end table
|
||||
|
||||
The directory library declarations in the source code should look
|
||||
something like the following, which assumes that you have also called
|
||||
@samp{AC_CHECK_HEADERS(unistd.h)}:
|
||||
something like the following:
|
||||
|
||||
@example
|
||||
@group
|
||||
#ifdef HAVE_UNISTD_H
|
||||
# include <sys/types.h>
|
||||
# include <unistd.h>
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_DIRENT_H
|
||||
#if HAVE_DIRENT_H
|
||||
# include <dirent.h>
|
||||
# define NAMLEN(dirent) (strlen((dirent)->d_name))
|
||||
#else
|
||||
# define dirent direct
|
||||
# define NAMLEN(dirent) ((dirent)->d_namlen)
|
||||
# ifdef HAVE_SYS_NDIR_H
|
||||
# if HAVE_SYS_NDIR_H
|
||||
# include <sys/ndir.h>
|
||||
# endif
|
||||
# ifdef HAVE_SYS_DIR_H
|
||||
# if HAVE_SYS_DIR_H
|
||||
# include <sys/dir.h>
|
||||
# endif
|
||||
# ifdef HAVE_NDIR_H
|
||||
# if HAVE_NDIR_H
|
||||
# include <ndir.h>
|
||||
# endif
|
||||
#endif
|
||||
@ -1520,6 +1523,8 @@ Using the above declarations, the program would declare variables to be
|
||||
type @code{struct dirent}, not @code{struct direct}, and would access
|
||||
the length of a directory entry name by passing a pointer to a
|
||||
@code{struct dirent} to the @code{NAMLEN} macro.
|
||||
|
||||
This macro also checks for the SCO Xenix @file{dir} and @file{x} libraries.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_HEADER_MAJOR
|
||||
@ -1908,13 +1913,21 @@ programs need to be installed specially on this system for
|
||||
@code{GETLOADAVG_PRIVILEGED}.
|
||||
|
||||
@item
|
||||
This macro always defines @code{NEED_SETGID}, for @code{make}. The
|
||||
value is @samp{true} if special installation is required, @samp{false}
|
||||
if not. If @code{NEED_SETGID} is @samp{true}, it sets @code{KMEM_GROUP}
|
||||
This macro sets the output variable @code{NEED_SETGID}. The value is
|
||||
@samp{true} if special installation is required, @samp{false} if not.
|
||||
If @code{NEED_SETGID} is @samp{true}, this macro sets @code{KMEM_GROUP}
|
||||
to the name of the group that should own the installed program.
|
||||
@end enumerate
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_GETMNTENT
|
||||
@maindex FUNC_GETMNTENT
|
||||
@cvindex HAVE_GETMNTENT
|
||||
Check for the @code{getmntent} in the @file{sun} and @file{seq}
|
||||
libraries, for Irix 4 and PTX, respectively. Then, if @code{getmntent} is
|
||||
available, define @code{HAVE_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_MMAP
|
||||
@maindex FUNC_MMAP
|
||||
@cvindex HAVE_MMAP
|
||||
@ -1939,6 +1952,13 @@ If the @code{strcoll} function exists and works correctly, define
|
||||
definitions of @code{strcoll}, which should not be used.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_STRFTIME
|
||||
@maindex FUNC_STRFTIME
|
||||
@cvindex HAVE_STRFTIME
|
||||
Check for @code{strftime} in the @file{intl} library, for SCO UNIX.
|
||||
Then, if @code{strftime} is available, define @code{HAVE_STRFTIME}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_FUNC_UTIME_NULL
|
||||
@maindex FUNC_UTIME_NULL
|
||||
@cvindex HAVE_UTIME_NULL
|
||||
@ -2046,11 +2066,11 @@ example, @code{struct timeval} or @code{struct timezone} as well as
|
||||
@code{HAVE_SYS_TIME_H}.
|
||||
|
||||
@example
|
||||
#ifdef TIME_WITH_SYS_TIME
|
||||
#if TIME_WITH_SYS_TIME
|
||||
# include <sys/time.h>
|
||||
# include <time.h>
|
||||
#else
|
||||
# ifdef HAVE_SYS_TIME_H
|
||||
# if HAVE_SYS_TIME_H
|
||||
# include <sys/time.h>
|
||||
# else
|
||||
# include <time.h>
|
||||
@ -2136,17 +2156,6 @@ include it before any other header files, to prevent inconsistencies in
|
||||
declarations.)
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_CROSS
|
||||
@maindex C_CROSS
|
||||
If the C compiler being used does not produce executables that can run
|
||||
on the system where @code{configure} is being run, set the shell
|
||||
variable @code{cross_compiling} to @samp{yes}, otherwise @samp{no}.
|
||||
This information can be used by @code{AC_TRY_RUN} to determine whether
|
||||
to take a default action instead of trying to run a test program
|
||||
For more information on dealing with test programs and
|
||||
cross-compiling, @xref{Test Programs}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_INLINE
|
||||
@maindex C_INLINE
|
||||
@cvindex inline
|
||||
@ -2254,6 +2263,27 @@ their header files or libraries. These macros are warts; they should
|
||||
be replaced by a more systematic approach, based either on the
|
||||
functions they make available or the environments they provide.
|
||||
|
||||
@defmac AC_DYNIX_SEQ
|
||||
@maindex OS_DYNIX_SEQ
|
||||
If on PTX (Sequent UNIX), add @samp{-lseq} to output
|
||||
variable @code{LIBS}. This macro is obsolete; instead, use
|
||||
@code{AC_FUNC_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_IRIX_SUN
|
||||
@maindex IRIX_SUN
|
||||
If on IRIX (Silicon Graphics UNIX), add @samp{-lsun} to output variable
|
||||
@code{LIBS}. This macro is obsolete; instead, use
|
||||
@code{AC_FUNC_GETMNTENT}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_SCO_INTL
|
||||
@maindex SCO_INTL
|
||||
@ovindex LIBS
|
||||
If on SCO UNIX, add @samp{-lintl} to output variable @code{LIBS}.
|
||||
This macro is obsolete; instead, use @code{AC_FUNC_STRFTIME}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_AIX
|
||||
@maindex OS_AIX
|
||||
@cvindex _ALL_SOURCE
|
||||
@ -2261,23 +2291,6 @@ If on AIX, define @code{_ALL_SOURCE}. Allows the use of some BSD
|
||||
functions. Should be called before any macros that run the C compiler.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_DYNIX
|
||||
@maindex OS_DYNIX
|
||||
If on DYNIX/ptx (Sequent UNIX), add @samp{-lseq} to output
|
||||
variable @code{LIBS}. Allows use of some BSD system calls and
|
||||
@code{getmntent}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_IRIX
|
||||
@maindex OS_IRIX
|
||||
If on IRIX (Silicon Graphics UNIX), add @samp{-lsun} to output
|
||||
variable @code{LIBS}. Needed to get @code{getmntent}. At sites using
|
||||
Yellow Pages/NIS, it is also needed to get properly working
|
||||
@code{gethostby*}, @code{getpw*}, @code{getgr*}, @code{getnetby*}, and
|
||||
so on.
|
||||
@c (According to Garrett.Wollman@uvm.edu.)
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_ISC
|
||||
@maindex OS_ISC
|
||||
@cvindex _POSIX_SOURCE
|
||||
@ -2299,21 +2312,13 @@ If on Minix, define @code{_MINIX} and @code{_POSIX_SOURCE} and define
|
||||
facilities. Should be called before any macros that run the C compiler.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_SCO
|
||||
@maindex OS_SCO
|
||||
@defmac AC_XENIX_DIR
|
||||
@maindex XENIX_DIR
|
||||
@ovindex LIBS
|
||||
If on SCO UNIX, add @samp{-lintl} to output variable @code{LIBS}.
|
||||
Used to get @code{strftime}. It must be called before checking for
|
||||
@code{strftime}.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_OS_XENIX
|
||||
@maindex OS_XENIX
|
||||
@ovindex LIBS
|
||||
If on Xenix, add @samp{-lx} to output variable @code{LIBS}. Also,
|
||||
if @file{sys/ndir.h} is not being used, add @samp{-ldir} to @code{LIBS}.
|
||||
Needed when using the directory reading functions. This macro calls
|
||||
@code{AC_DIR_HEADER} if it has not been called already.
|
||||
If on Xenix, add @samp{-lx} to output variable @code{LIBS}. Also, if
|
||||
@file{dirent.h} is being used, add @samp{-ldir} to @code{LIBS}. This
|
||||
macro calls @code{AC_DIR_HEADER} if it hasn't been called already. It
|
||||
is obsolete; use @code{AC_HEADER_DIRENT} instead.
|
||||
@end defmac
|
||||
|
||||
@node Makefiles, Writing Tests, Existing Tests, Top
|
||||
@ -2543,7 +2548,7 @@ solve the problem.
|
||||
* Testing Values and Files:: Checking strings and files.
|
||||
* Multiple Cases:: Tests for several possible values.
|
||||
* Defining Symbols:: Defining C preprocessor symbols.
|
||||
* Setting Variables:: Setting shell and output variables.
|
||||
* Setting Variables:: Setting variables in output files.
|
||||
* Printing Messages:: Notifying users of progress or problems.
|
||||
* Language Choice:: Selecting which language to use for testing.
|
||||
@end menu
|
||||
@ -2680,6 +2685,13 @@ cross-compiling. A few of the macros distributed with Autoconf produce
|
||||
this warning message.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_C_CROSS
|
||||
@maindex C_CROSS
|
||||
If the C compiler being used does not produce executables that can run
|
||||
on the system where @code{configure} is being run, set the shell
|
||||
variable @code{cross_compiling} to @samp{yes}, otherwise @samp{no}.
|
||||
@end defmac
|
||||
|
||||
@menu
|
||||
* Alternatives:: Approaches preferred over test programs.
|
||||
* Guidelines:: General rules for writing test programs.
|
||||
@ -2966,35 +2978,26 @@ AC_DEFINE_UNQUOTED(config_machfile, "$@{machfile@}")
|
||||
@section Setting Variables
|
||||
|
||||
These macros help other macros to define variables that are used in the
|
||||
@code{configure} shell script and substituted into output files.
|
||||
@code{configure} shell script and substituted into output files. These
|
||||
variables are called @dfn{output variables}.
|
||||
|
||||
@defmac AC_SUBST (@var{variable})
|
||||
@maindex SUBST
|
||||
Substitute the variable @var{variable} when creating the output files
|
||||
(typically one or more @file{Makefile}s). This means replace instances
|
||||
of @samp{@@@var{variable}@@}, e.g. in @file{Makefile.in}, with the
|
||||
current value of the shell variable @var{variable}. The value of
|
||||
@var{variable} should not contain literal newlines. If this macro were
|
||||
not called, the value of @var{variable} would not be set in the output
|
||||
files, even though @code{configure} had figured out a value for it.
|
||||
|
||||
You can set or add to the value of @var{variable} in the usual shell
|
||||
way. For example, to add @samp{-ltermcap} to the value of the variable
|
||||
@code{LIBS}:
|
||||
|
||||
@example
|
||||
LIBS="$LIBS -ltermcap"
|
||||
@end example
|
||||
Substitute the variable @var{variable} into output files (typically one
|
||||
or more @file{Makefile}s). This means that @code{AC_OUTPUT} will
|
||||
replace instances of @samp{@@@var{variable}@@}, e.g. in
|
||||
@file{Makefile.in}, with the value that the shell variable
|
||||
@var{variable} has when @code{AC_OUTPUT} is called. The value of
|
||||
@var{variable} should not contain literal newlines.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_SUBST_FILE (@var{variable})
|
||||
@maindex SUBST_FILE
|
||||
Substitute the contents of the file named by shell variable
|
||||
@var{variable} into output variable @var{variable} when
|
||||
creating the output files (typically one or more @file{Makefile}s).
|
||||
This macro is useful for inserting @file{Makefile} fragments containing
|
||||
special dependencies or other @code{make} directives for particular host
|
||||
or target types into @file{Makefile}s.
|
||||
@var{variable} into output files (typically one or more
|
||||
@file{Makefile}s). This macro is useful for inserting @file{Makefile}
|
||||
fragments containing special dependencies or other @code{make}
|
||||
directives for particular host or target types into @file{Makefile}s.
|
||||
|
||||
For example, @file{configure.in} could contain:
|
||||
|
||||
@ -3430,7 +3433,7 @@ a suggestion for what to use instead of @var{this-macro-name}.
|
||||
A sample call is:
|
||||
|
||||
@example
|
||||
AC_OBSOLETE([$0], [; use AC_CHECK_HEADERS(unistd.h) instead])
|
||||
AC_OBSOLETE([$0], [; use AC_CHECK_HEADERS(unistd.h) instead])dnl
|
||||
@end example
|
||||
@end defmac
|
||||
|
||||
@ -3621,8 +3624,17 @@ example, @samp{decstation} can be given on the command line instead of
|
||||
@node Canonicalizing, System Name Variables, Specifying Names, Manual Configuration
|
||||
@section Getting the Canonical System Type
|
||||
|
||||
The following macros make the name of the system type available in
|
||||
@code{configure} scripts.
|
||||
The following macros make the system type available to @code{configure}
|
||||
scripts. They run the shell script @code{config.guess} to determine any
|
||||
values for the host, target, and build types that they need and the user
|
||||
did not specify on the command line. They run @code{config.sub} to
|
||||
canonicalize any aliases the user gave. If you use these macros, you
|
||||
must distribute those two shell scripts along with your source code.
|
||||
@xref{Output}, for information about the @code{AC_CONFIG_AUX_DIR} macro
|
||||
which you can use to control which directory @code{configure} looks for
|
||||
those scripts in. If you do not use either of these macros,
|
||||
@code{configure} ignores any @samp{--host}, @samp{--target}, and
|
||||
@samp{--build} options given to it.
|
||||
|
||||
@defmac AC_CANONICAL_HOST
|
||||
@maindex CANONICAL_HOST
|
||||
@ -3633,24 +3645,15 @@ a compiler toolchain.
|
||||
|
||||
@defmac AC_CANONICAL_SYSTEM
|
||||
@maindex CANONICAL_SYSTEM
|
||||
Set shell and output variables to the names of the canonical system
|
||||
types. If the user did not specify one or more of those values on the
|
||||
command line, run @code{config.guess} to determine them. Run
|
||||
@code{config.sub} to canonicalize any aliases the user gave. If you use
|
||||
this macro, you must distribute those two shell scripts along with your
|
||||
source code (@pxref{Output}, for information about the
|
||||
@code{AC_CONFIG_AUX_DIR} macro which you can use to control which
|
||||
directory @code{configure} looks for those scripts in). If you do not
|
||||
run this macro, @code{configure} ignores any @samp{--host}, etc. options
|
||||
given to it.
|
||||
Set output variables to the names of the canonical system
|
||||
types.
|
||||
@end defmac
|
||||
|
||||
@node System Name Variables, Using System Type, Canonicalizing, Manual Configuration
|
||||
@section System Name Variables
|
||||
|
||||
After calling @code{AC_CANONICAL_SYSTEM} or @code{AC_CANONICAL_HOST},
|
||||
the shell and output variables that contain the system type
|
||||
information are:
|
||||
the output variables that contain the system type information are:
|
||||
|
||||
@table @code
|
||||
@ovindex build
|
||||
@ -3853,15 +3856,20 @@ It is possible to set some cache values in the site file.
|
||||
If you are cross-compiling, it is impossible to check features that
|
||||
require running a test program. You could ``prime the cache'' by
|
||||
setting those values correctly for that system in
|
||||
@file{@var{exec_prefix}/lib/config.site}. The cache file is careful to
|
||||
not override any variables set in the site files. Similarly, you should
|
||||
not override command-line options in the site files. Your code should
|
||||
check that variables such as @code{prefix} and @code{cache_file} have
|
||||
their default values (as set near the top of @code{configure}) before
|
||||
changing them.
|
||||
@file{@var{exec_prefix}/lib/config.site}. To find out the names of the
|
||||
cache variables you need to set, look for shell variables with
|
||||
@samp{_cv_} in their names in the affected configure scripts, or in the
|
||||
Autoconf @code{m4} source code for those macros.
|
||||
|
||||
The cache file is careful to not override any variables set in the site
|
||||
files. Similarly, you should not override command-line options in the
|
||||
site files. Your code should check that variables such as @code{prefix}
|
||||
and @code{cache_file} have their default values (as set near the top of
|
||||
@code{configure}) before changing them.
|
||||
|
||||
Here is a sample file @file{/usr/share/local/gnu/lib/config.site}.
|
||||
@samp{configure --prefix=/usr/share/local/gnu} would read this file.
|
||||
@samp{configure --prefix=/usr/share/local/gnu} would read this file
|
||||
(if @code{CONFIG_SITE} is not set).
|
||||
|
||||
@example
|
||||
# config.site for configure
|
||||
@ -4021,6 +4029,9 @@ your @file{Makefile.in} files, so they can take advantage of the values
|
||||
of those variables in the environment when @code{configure} is run.
|
||||
Doing this isn't necessary, but it's a convenience for users.
|
||||
|
||||
Add @file{config.log} and @file{config.cache} to the list of files you
|
||||
remove in @code{distclean} targets.
|
||||
|
||||
If you have the following in @file{Makefile.in}:
|
||||
|
||||
@example
|
||||
@ -4114,6 +4125,12 @@ backslashes before quotes, you need to remove them. It now works
|
||||
predictably, and does not treat quotes (except backquotes) specially.
|
||||
@xref{Setting Variables}.
|
||||
|
||||
All of the boolean shell variables set by Autoconf macros now use
|
||||
@samp{yes} for the true value. Most of them use @samp{no} for false,
|
||||
though for backward compatibility some use the empty string instead. If
|
||||
you were relying on a shell variable being set to something like 1 or
|
||||
@samp{t} for true, you need to change your tests.
|
||||
|
||||
@node Changed Macro Writing, , Changed Results, Upgrading
|
||||
@section Changed Macro Writing
|
||||
|
||||
@ -4391,9 +4408,6 @@ removed because of limited usefulness
|
||||
@item AC_CROSS_CHECK
|
||||
@maindex CROSS_CHECK
|
||||
@code{AC_C_CROSS}
|
||||
@item AC_DYNIX_SEQ
|
||||
@maindex DYNIX_SEQ
|
||||
@code{AC_OS_DYNIX}
|
||||
@item AC_ERROR
|
||||
@maindex ERROR
|
||||
@code{AC_MSG_ERROR}
|
||||
@ -4433,9 +4447,6 @@ removed because of limited usefulness
|
||||
@item AC_INLINE
|
||||
@maindex INLINE
|
||||
@code{AC_C_INLINE}
|
||||
@item AC_IRIX_SUN
|
||||
@maindex IRIX_SUN
|
||||
@code{AC_OS_IRIX}
|
||||
@item AC_ISC_POSIX
|
||||
@maindex ISC_POSIX
|
||||
@code{AC_OS_ISC}
|
||||
@ -4499,9 +4510,6 @@ removed because of limited usefulness
|
||||
@item AC_RSH
|
||||
@maindex RSH
|
||||
removed because of limited usefulness
|
||||
@item AC_SCO_INTL
|
||||
@maindex SCO_INTL
|
||||
@code{AC_OS_SCO}
|
||||
@item AC_SETVBUF_REVERSED
|
||||
@maindex SETVBUF_REVERSED
|
||||
@code{AC_FUNC_SETVBUF_REVERSED}
|
||||
@ -4568,9 +4576,6 @@ removed because of limited usefulness
|
||||
@item AC_WORDS_BIGENDIAN
|
||||
@maindex WORDS_BIGENDIAN
|
||||
@code{AC_C_BIGENDIAN}
|
||||
@item AC_XENIX_DIR
|
||||
@maindex XENIX_DIR
|
||||
@code{AC_OS_XENIX}
|
||||
@item AC_YYTEXT_POINTER
|
||||
@maindex YYTEXT_POINTER
|
||||
@code{AC_DECL_YYTEXT}
|
||||
|
||||
@ -587,17 +587,17 @@ AC_DEFUN(AC_ARG_PROGRAM,
|
||||
if test -n "${program_transform_name}"; then
|
||||
# Double any \ or $.
|
||||
echo 's,\\,\\\\,g; s,\$,$$,g' > conftestsed
|
||||
program_transform_name="-e `echo ${program_transform_name} | sed -f conftestsed`"
|
||||
program_transform_name="`echo ${program_transform_name}|sed -f conftestsed`"
|
||||
rm -f conftestsed
|
||||
fi
|
||||
test "${program_prefix}" != NONE &&
|
||||
program_transform_name="-e s,^,${program_prefix}, ${program_transform_name}"
|
||||
program_transform_name="s,^,${program_prefix},; ${program_transform_name}"
|
||||
# Use a double $ so make ignores it.
|
||||
test "${program_suffix}" != NONE &&
|
||||
program_transform_name="-e s,\$\$,${program_suffix}, ${program_transform_name}"
|
||||
program_transform_name="s,\$\$,${program_suffix},; ${program_transform_name}"
|
||||
|
||||
# sed with no file args requires a program.
|
||||
test "${program_transform_name}" = "" && program_transform_name="-e s,x,x,"
|
||||
test "${program_transform_name}" = "" && program_transform_name="s,x,x,"
|
||||
AC_SUBST(program_transform_name)dnl
|
||||
])
|
||||
|
||||
@ -701,11 +701,6 @@ NONE---*---* | *---NONE---* | *---*---NONE) ;;
|
||||
*) AC_MSG_ERROR(can only configure for one host and one target at a time) ;;
|
||||
esac
|
||||
|
||||
# Make sure we can run config.sub.
|
||||
if ${ac_config_sub} sun4 >/dev/null 2>&1; then :
|
||||
else AC_MSG_ERROR(can not run ${ac_config_sub})
|
||||
fi
|
||||
|
||||
AC_CANONICAL_HOST
|
||||
AC_CANONICAL_TARGET
|
||||
AC_CANONICAL_BUILD
|
||||
@ -718,6 +713,12 @@ dnl Subroutines of AC_CANONICAL_SYSTEM.
|
||||
|
||||
AC_DEFUN(AC_CANONICAL_HOST,
|
||||
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
|
||||
|
||||
# Make sure we can run config.sub.
|
||||
if ${ac_config_sub} sun4 >/dev/null 2>&1; then :
|
||||
else AC_MSG_ERROR(can not run ${ac_config_sub})
|
||||
fi
|
||||
|
||||
AC_MSG_CHECKING(host system type)
|
||||
|
||||
host_alias=$host
|
||||
|
||||
@ -61,13 +61,7 @@ AC_DEFUN(AC_CONST, [indir([AC_C_CONST])])dnl
|
||||
AC_DEFUN(AC_LONG_FILE_NAMES, [indir([AC_SYS_LONG_FILE_NAMES])])dnl
|
||||
AC_DEFUN(AC_RESTARTABLE_SYSCALLS, [indir([AC_SYS_RESTARTABLE_SYSCALLS])])dnl
|
||||
AC_DEFUN(AC_FIND_X, [indir([AC_PATH_X])])dnl
|
||||
AC_DEFUN(AC_FIND_X_XMKMF, [indir([AC_PATH_X_XMKMF])])dnl
|
||||
AC_DEFUN(AC_FIND_X_DIRECT, [indir([AC_PATH_X_DIRECT])])dnl
|
||||
AC_DEFUN(AC_FIND_XTRA, [indir([AC_PATH_XTRA])])dnl
|
||||
AC_DEFUN(AC_AIX, [indir([AC_OS_AIX])])dnl
|
||||
AC_DEFUN(AC_MINIX, [indir([AC_OS_MINIX])])dnl
|
||||
AC_DEFUN(AC_ISC_POSIX, [indir([AC_OS_ISC])])dnl
|
||||
AC_DEFUN(AC_XENIX_DIR, [indir([AC_OS_XENIX])])dnl
|
||||
AC_DEFUN(AC_SCO_INTL, [indir([AC_OS_SCO])])dnl
|
||||
AC_DEFUN(AC_IRIX_SUN, [indir([AC_OS_IRIX])])dnl
|
||||
AC_DEFUN(AC_DYNIX_SEQ, [indir([AC_OS_DYNIX])])dnl
|
||||
|
||||
@ -150,6 +150,33 @@ Autoconf TCGETA],
|
||||
fi
|
||||
])
|
||||
|
||||
define(AC_PROG_CC_ANSI,
|
||||
[AC_MSG_CHECKING(for ${CC-cc} option to accept ANSI C)
|
||||
AC_CACHE_VAL(ac_cv_prog_cc_ansi,
|
||||
[ac_cv_prog_cc_ansi=no
|
||||
ac_save_CFLAGS="$CFLAGS"
|
||||
# Don't try gcc -ansi; that turns off useful extensions and
|
||||
# breaks some systems' header files.
|
||||
# AIX -qlanglvl=ansi
|
||||
# Ultrix and OSF/1 -std1
|
||||
# HP-UX -Aa
|
||||
# SVR4 -Xc
|
||||
for ac_arg in "" -qlanglvl=ansi -std1 -Aa -Xc
|
||||
do
|
||||
CFLAGS="$ac_save_CFLAGS $ac_arg"
|
||||
dnl Don't use CPP directly in case it doesn't take these options.
|
||||
AC_TRY_LINK(,
|
||||
[#if !defined(__STDC__) || __STDC__ != 1
|
||||
notansi(); /* Produce a link error if not ANSI C. */
|
||||
#endif
|
||||
], [ac_cv_prog_cc_ansi=$ac_arg; break])
|
||||
done
|
||||
CFLAGS="$ac_save_CFLAGS"
|
||||
])
|
||||
AC_MSG_RESULT($ac_cv_prog_cc_ansi)
|
||||
test "$ac_cv_prog_cc_ansi" != no && CC="$CC $ac_cv_prog_cc_ansi"
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_PROG_CC_C_O,
|
||||
[if test "x$CC" != xcc; then
|
||||
AC_MSG_CHECKING(whether $CC and cc understand -c and -o together)
|
||||
@ -447,7 +474,7 @@ AC_DEFUN(AC_USG,
|
||||
[AC_OBSOLETE([$0],
|
||||
[; instead use AC_CHECK_HEADERS(string.h) and HAVE_STRING_H])dnl
|
||||
AC_MSG_CHECKING([for BSD string and memory functions])
|
||||
AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);], ,
|
||||
AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);],
|
||||
[AC_MSG_RESULT(yes); AC_DEFINE(USG)], [AC_MSG_RESULT(no)])])
|
||||
|
||||
|
||||
@ -484,6 +511,12 @@ AC_DEFUN(AC_HEADER_DIRENT,
|
||||
[ac_header_dirent=no
|
||||
AC_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h,
|
||||
[ac_header_dirent=$ac_hdr; break])
|
||||
# Two versions of opendir et al. are in -ldir and -lx on SCO Xenix,
|
||||
# and -lx contains other useful things as well. (FIXME what are they?)
|
||||
if test $ac_header_dirent = dirent.h; then
|
||||
AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
|
||||
fi
|
||||
AC_CHECK_LIB(x, main, LIBS="$LIBS -lx")
|
||||
])
|
||||
|
||||
dnl Like AC_CHECK_HEADER, except also make sure that HEADER-FILE
|
||||
@ -518,20 +551,6 @@ changequote([, ])dnl
|
||||
AC_DEFINE_UNQUOTED(${ac_tr_hdr}) $2])dnl
|
||||
done])
|
||||
|
||||
AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
|
||||
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
|
||||
AC_MSG_CHECKING(whether closedir returns void)
|
||||
AC_CACHE_VAL(ac_cv_func_closedir_void,
|
||||
[AC_TRY_RUN([#include <sys/types.h>
|
||||
#include <$ac_header_dirent>
|
||||
int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
|
||||
ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes)])dnl
|
||||
AC_MSG_RESULT($ac_cv_func_closedir_void)
|
||||
if test $ac_cv_func_closedir_void = yes; then
|
||||
AC_DEFINE(CLOSEDIR_VOID)
|
||||
fi
|
||||
])
|
||||
|
||||
dnl Obsolete.
|
||||
AC_DEFUN(AC_DIR_HEADER,
|
||||
[ac_header_dirent=no
|
||||
@ -689,6 +708,20 @@ AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal)
|
||||
dnl ### Checks for functions
|
||||
|
||||
|
||||
AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
|
||||
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
|
||||
AC_MSG_CHECKING(whether closedir returns void)
|
||||
AC_CACHE_VAL(ac_cv_func_closedir_void,
|
||||
[AC_TRY_RUN([#include <sys/types.h>
|
||||
#include <$ac_header_dirent>
|
||||
int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
|
||||
ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes)])dnl
|
||||
AC_MSG_RESULT($ac_cv_func_closedir_void)
|
||||
if test $ac_cv_func_closedir_void = yes; then
|
||||
AC_DEFINE(CLOSEDIR_VOID)
|
||||
fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_FUNC_MMAP,
|
||||
[AC_MSG_CHECKING(for working mmap)
|
||||
AC_CACHE_VAL(ac_cv_func_mmap,
|
||||
@ -1174,6 +1207,17 @@ if test $ac_cv_func_setvbuf_reversed = yes; then
|
||||
fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_FUNC_GETMNTENT,
|
||||
[# getmntent is in -lsun on Irix 4, -lseq on PTX.
|
||||
AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
|
||||
AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
|
||||
AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
|
||||
|
||||
AC_DEFUN(AC_FUNC_STRFTIME,
|
||||
[# strftime is in -lintl on SCO UNIX.
|
||||
AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
|
||||
AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)])])
|
||||
|
||||
|
||||
dnl ### Checks for structure members
|
||||
|
||||
@ -1323,7 +1367,7 @@ fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_INT_16_BITS,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])
|
||||
[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])dnl
|
||||
AC_MSG_CHECKING(whether int is 16 bits)
|
||||
AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
|
||||
[AC_MSG_RESULT(yes)
|
||||
@ -1331,7 +1375,7 @@ AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_LONG_64_BITS,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])
|
||||
[AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])dnl
|
||||
AC_MSG_CHECKING(whether long int is 64 bits)
|
||||
AC_TRY_RUN([main() { exit(sizeof(long int) != 8); }],
|
||||
[AC_MSG_RESULT(yes)
|
||||
@ -1740,7 +1784,7 @@ else
|
||||
|
||||
# msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
|
||||
# to get the SysV transport functions.
|
||||
# Not sure which flavor of 386 Unix this is, but it seems harmless to
|
||||
# Not sure which flavor of 386 UNIX this is, but it seems harmless to
|
||||
# check for it.
|
||||
AC_CHECK_LIB(nsl, t_accept, [X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl"])
|
||||
|
||||
@ -1777,7 +1821,6 @@ AC_DEFUN(AC_OS_MINIX,
|
||||
[AC_BEFORE([$0], [AC_TRY_LINK])dnl
|
||||
AC_BEFORE([$0], [AC_TRY_RUN])dnl
|
||||
AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=)
|
||||
# The Minix shell can not assign to the same variable on the same line!
|
||||
if test "$MINIX" = yes; then
|
||||
AC_DEFINE(_POSIX_SOURCE)
|
||||
AC_DEFINE(_POSIX_1_SOURCE, 2)
|
||||
@ -1806,8 +1849,9 @@ else
|
||||
fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_OS_XENIX,
|
||||
[AC_REQUIRE([AC_DIR_HEADER])dnl
|
||||
AC_DEFUN(AC_XENIX_DIR,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
|
||||
AC_REQUIRE([AC_DIR_HEADER])dnl
|
||||
AC_MSG_CHECKING(for Xenix)
|
||||
AC_EGREP_CPP(yes,
|
||||
[#if defined(M_XENIX) && !defined(M_UNIX)
|
||||
@ -1815,21 +1859,23 @@ AC_EGREP_CPP(yes,
|
||||
#endif
|
||||
], [AC_MSG_RESULT(yes); XENIX=yes], [AC_MSG_RESULT(no); XENIX=])
|
||||
if test "$XENIX" = yes; then
|
||||
# Make sure -ldir precedes -lx.
|
||||
test $ac_header_dirent = dirent.h && LIBS="$LIBS -ldir"
|
||||
LIBS="$LIBS -lx"
|
||||
if test $ac_header_dirent != sys/ndir.h; then
|
||||
LIBS="-ldir $LIBS" # Make sure -ldir precedes -lx.
|
||||
fi
|
||||
fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_OS_SCO,
|
||||
[AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
|
||||
AC_DEFUN(AC_DYNIX_SEQ,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
|
||||
AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_OS_IRIX,
|
||||
[AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
|
||||
AC_DEFUN(AC_IRIX_SUN,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
|
||||
AC_CHECK_LIB(sun, getmntent, LIBS="$LIBS -lsun")
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_OS_DYNIX,
|
||||
[AC_CHECK_LIB(seq, getmntent, LIBS="$LIBS -lseq")
|
||||
AC_DEFUN(AC_SCO_INTL,
|
||||
[AC_OBSOLETE([$0], [; instead use AC_FUNC_STRFTIME])dnl
|
||||
AC_CHECK_LIB(intl, strftime, LIBS="$LIBS -lintl")
|
||||
])
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user