mirror of
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rewhack the compiler checking and fix some minor bugs
This commit is contained in:
David MacKenzie
parent
091c6ec533
commit
27baa892d9
3
AUTHORS
Normal file
3
AUTHORS
Normal file
@ -0,0 +1,3 @@
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Written by David MacKenzie, with help from
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Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
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Roland McGrath, Noah Friedman, david d zuhn, and many others.
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29
ChangeLog
29
ChangeLog
@ -1,3 +1,32 @@
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Tue Nov 19 10:29:06 1996 David J MacKenzie <djm@catapult.va.pubnix.com>
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* acgeneral.m4 (AC_TRY_RUN_NATIVE): Fail if linking fails, and
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remove conftest* before running success code, like in AC_TRY_LINK.
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(AC_TRY_RUN): Don't require AC_C_CROSS.
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(AC_TRY_COMPILER): New macro.
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(AC_LANG_C, AC_LANG_CPLUSPLUS): Set cross_compiling.
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* acspecific.m4 (AC_PROG_CC_WORKS, AC_PROG_CXX_WORKS): Use
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AC_TRY_COMPILER instead of AC_TRY_LINK.
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(AC_PROG_CC_GNU, AC_PROG_CC_G): Split out of AC_PROG_CC.
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(AC_PROG_CXX_GNU, AC_PROG_CXX_G): Split out of AC_PROG_CXX.
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For the *_G macros, make the cache variable names non-GNU-specific.
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(AC_C_CROSS): Mark obsolete, and otherwise a no-op.
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* AUTHORS: New file.
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* Makefile.in (DISTFILES): Add it.
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* acspecific.m4 (AC_FUNC_MMAP): Update the getpagesize
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declarations from getpagesize.h. Check for unistd.h.
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* acgeneral.m4 (AC_OUTPUT_FILES): Run the eval in a subshell.
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* acfunctions: Map fnmatch, strftime, getpgrp, setpgrp to their
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own macros.
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* acgeneral.m4 (AC_OUTPUT_HEADER): Check that $CONFIG_HEADERS is
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unset, not that it's empty.
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Mon Nov 18 10:24:50 1996 David J MacKenzie <djm@catapult.va.pubnix.com>
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* Version 2.11.
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@ -61,7 +61,7 @@ M4FILES = autoconf.m4 acgeneral.m4 acoldnames.m4 acspecific.m4 autoheader.m4
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# Files that can be generated, but should be up to date for a distribution.
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DISTDEP = info Makefile
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# Files to distribute.
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DISTFILES = COPYING ChangeLog ChangeLog.1 INSTALL \
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DISTFILES = AUTHORS COPYING ChangeLog ChangeLog.1 INSTALL \
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Makefile.in NEWS README TODO $(M4FILES) \
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acconfig.h acfunctions acheaders acidentifiers \
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acmakevars acprograms autoconf.info* \
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4
NEWS
4
NEWS
@ -1,3 +1,7 @@
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Major changes in release 2.12:
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* Bug fixes.
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Major changes in release 2.11:
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* AC_PROG_CC and AC_PROG_CXX check whether the compiler works.
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13
TODO
13
TODO
@ -482,10 +482,7 @@ From: bostic@bsdi.com (Keith Bostic)
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------------------------------------------------------------------------------
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Combine AC_PROG_CC_WORKS with AC_C_CROSS. If the compiler exits with
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a 0 status and produces a non-empty output file, consider it working.
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If the output file is runnable, consider it native, also.
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Perhaps also have AC_PROG_CC_WORKS try to link an invalid program, and
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Perhaps also have AC_TRY_COMPILER try to link an invalid program, and
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die if the compiler seemed to succeed--in which case it's not usable
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with autoconf scripts.
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@ -609,3 +606,11 @@ From: "Joel N. Weber II" <nemo@koa.iolani.honolulu.hi.us>
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------------------------------------------------------------------------------
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Merge the two lex macros, AC_PROG_LEX and AC_DECL_YYTEXT?
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------------------------------------------------------------------------------
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Is it safe to remove the getpagesize references from AC_FUNC_MMAP?
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------------------------------------------------------------------------------
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@ -14,12 +14,16 @@ memset AC_HEADER_STDC
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index AC_HEADER_STDC
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rindex AC_HEADER_STDC
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getgroups AC_TYPE_GETGROUPS
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getpgrp AC_FUNC_GETPGRP
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setpgrp AC_FUNC_SETPGRP
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signal AC_TYPE_SIGNAL
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alloca AC_FUNC_ALLOCA
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fnmatch AC_FUNC_FNMATCH
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getloadavg AC_FUNC_GETLOADAVG
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mmap AC_FUNC_MMAP
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setvbuf AC_FUNC_SETVBUF_REVERSED
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strcoll AC_FUNC_STRCOLL
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strftime AC_FUNC_STRFTIME
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utime AC_FUNC_UTIME_NULL
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vfork AC_FUNC_VFORK
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vprintf AC_FUNC_VPRINTF
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@ -28,7 +32,6 @@ vsprintf AC_FUNC_VPRINTF
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wait3 AC_FUNC_WAIT3
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# Others.
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fnmatch AC_CHECK_FUNCS
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ftime AC_CHECK_FUNCS
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gethostname AC_CHECK_FUNCS
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gettimeofday AC_CHECK_FUNCS
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@ -49,7 +52,6 @@ stime AC_CHECK_FUNCS
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strcspn AC_CHECK_FUNCS
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strdup AC_CHECK_FUNCS
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strerror AC_CHECK_FUNCS
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strftime AC_CHECK_FUNCS
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strspn AC_CHECK_FUNCS
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strstr AC_CHECK_FUNCS
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strtod AC_CHECK_FUNCS
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47
acgeneral.m4
47
acgeneral.m4
@ -52,7 +52,7 @@ dnl
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divert(-1)dnl Throw away output until AC_INIT is called.
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changequote([, ])
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define(AC_ACVERSION, 2.11)
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define(AC_ACVERSION, 2.11.1)
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dnl Some old m4's don't support m4exit. But they provide
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dnl equivalent functionality by core dumping because of the
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@ -1178,6 +1178,7 @@ ac_ext=c
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ac_cpp='$CPP $CPPFLAGS'
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ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
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ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
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cross_compiling=$ac_cv_prog_cc_cross
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])
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dnl AC_LANG_CPLUSPLUS()
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@ -1188,6 +1189,7 @@ ac_ext=C
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ac_cpp='$CXXCPP $CPPFLAGS'
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ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
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ac_link='${CXX-g++} -o conftest $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
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cross_compiling=$ac_cv_prog_cxx_cross
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])
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dnl Push the current language on a stack.
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@ -1420,6 +1422,31 @@ fi
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undefine([AC_VAR_NAME])dnl
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])
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dnl Check whether the current compiler produces executables, and
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dnl whether those executables are native to the build system.
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dnl Before calling this, call AC_LANG_* to set the right language.
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dnl AC_TRY_COMPILER(TEST-PROGRAM, WORKING-CACHE-ID, CROSS-CACHE-ID)
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AC_DEFUN(AC_TRY_COMPILER,
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[cat > conftest.$ac_ext <<EOF
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[#]line __oline__ "configure"
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#include "confdefs.h"
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[$1]
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EOF
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if AC_TRY_EVAL(ac_link) && test -s conftest; then
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[$2]=yes
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# If we can't run a trivial program, we are probably using a cross compiler.
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if (./conftest; exit) 2>/dev/null; then
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[$3]=no
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else
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[$3]=yes
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fi
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else
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echo "configure: failed program was:" >&AC_FD_CC
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cat conftest.$ac_ext >&AC_FD_CC
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[$2]=no
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fi
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rm -fr conftest*])
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dnl ### Checking for libraries
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@ -1630,8 +1657,7 @@ ifelse([$4], , , [ rm -rf conftest*
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$4
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])dnl
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fi
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rm -f conftest*]
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)
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rm -f conftest*])
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dnl ### Checking for run-time features
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@ -1640,8 +1666,7 @@ dnl ### Checking for run-time features
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dnl AC_TRY_RUN(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE
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dnl [, ACTION-IF-CROSS-COMPILING]]])
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AC_DEFUN(AC_TRY_RUN,
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[AC_REQUIRE([AC_C_CROSS])dnl
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if test "$cross_compiling" = yes; then
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[if test "$cross_compiling" = yes; then
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ifelse([$4], ,
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[errprint(__file__:__line__: warning: [AC_TRY_RUN] called without default to allow cross compiling
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)dnl
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@ -1664,9 +1689,10 @@ extern "C" void exit(int);
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])dnl
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[$1]
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EOF
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AC_TRY_EVAL(ac_link)
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if test -s conftest && (./conftest; exit) 2>/dev/null; then
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ifelse([$2], , :, [$2])
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if AC_TRY_EVAL(ac_link) && test -s conftest && (./conftest; exit) 2>/dev/null
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then
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ifelse([$2], , :, [rm -rf conftest*
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$2])
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else
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echo "configure: failed program was:" >&AC_FD_CC
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cat conftest.$ac_ext >&AC_FD_CC
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@ -2081,7 +2107,8 @@ s%@srcdir@%$srcdir%g
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s%@top_srcdir@%$top_srcdir%g
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ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%$INSTALL%g
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])dnl
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" $ac_given_srcdir/$ac_file_in | eval "$ac_sed_cmds" > $ac_file
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dnl The parens around the eval prevent an "illegal io" in Ultrix sh.
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" $ac_given_srcdir/$ac_file_in | (eval "$ac_sed_cmds") > $ac_file
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dnl This would break Makefile dependencies.
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dnl if cmp -s $ac_file conftest.out 2>/dev/null; then
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dnl echo "$ac_file is unchanged"
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@ -2120,7 +2147,7 @@ ac_eC=' '
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ac_eD='%g'
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changequote([, ])dnl
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if test -z "$CONFIG_HEADERS"; then
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if test "${CONFIG_HEADERS+set}" != set; then
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EOF
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dnl Support passing AC_CONFIG_HEADER a value containing shell variables.
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cat >> $CONFIG_STATUS <<EOF
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193
acspecific.m4
193
acspecific.m4
@ -79,39 +79,20 @@ if test -z "$CC"; then
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fi
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AC_PROG_CC_WORKS
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AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
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[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
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cat > conftest.c <<EOF
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#ifdef __GNUC__
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yes;
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#endif
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EOF
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if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
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ac_cv_prog_gcc=yes
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else
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ac_cv_prog_gcc=no
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fi])
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AC_PROG_CC_GNU
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if test $ac_cv_prog_gcc = yes; then
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GCC=yes
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dnl Check whether -g works even if CFLAGS is set, in case the package
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dnl Check whether -g works, even if CFLAGS is set, in case the package
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dnl plays around with CFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CFLAGS="${CFLAGS+set}"
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS=
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AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_gcc_g,
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[echo 'void f(){}' > conftest.c
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if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
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ac_cv_prog_gcc_g=yes
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else
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ac_cv_prog_gcc_g=no
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fi
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rm -f conftest*
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])
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AC_PROG_CC_G
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if test "$ac_test_CFLAGS" = set; then
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CFLAGS="$ac_save_CFLAGS"
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elif test $ac_cv_prog_gcc_g = yes; then
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elif test $ac_cv_prog_cc_g = yes; then
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CFLAGS="-g -O2"
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else
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CFLAGS="-O2"
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@ -127,39 +108,20 @@ AC_DEFUN(AC_PROG_CXX,
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AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
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AC_PROG_CXX_WORKS
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AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
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[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
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cat > conftest.C <<EOF
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#ifdef __GNUC__
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yes;
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#endif
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EOF
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if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
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ac_cv_prog_gxx=yes
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else
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ac_cv_prog_gxx=no
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fi])
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AC_PROG_CXX_GNU
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if test $ac_cv_prog_gxx = yes; then
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GXX=yes
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dnl Check whether -g works even if CXXFLAGS is set, in case the package
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dnl Check whether -g works, even if CXXFLAGS is set, in case the package
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dnl plays around with CXXFLAGS (such as to build both debugging and
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dnl normal versions of a library), tasteless as that idea is.
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ac_test_CXXFLAGS="${CXXFLAGS+set}"
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ac_save_CXXFLAGS="$CXXFLAGS"
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CXXFLAGS=
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AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_gxx_g,
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[echo 'void f(){}' > conftest.cc
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if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
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ac_cv_prog_gxx_g=yes
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else
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ac_cv_prog_gxx_g=no
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fi
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rm -f conftest*
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])
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dnl
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AC_PROG_CXX_G
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if test "$ac_test_CXXFLAGS" = set; then
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CXXFLAGS="$ac_save_CXXFLAGS"
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elif test $ac_cv_prog_gxx_g = yes; then
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elif test $ac_cv_prog_cxx_g = yes; then
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CXXFLAGS="-g -O2"
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else
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CXXFLAGS="-O2"
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@ -174,34 +136,82 @@ AC_DEFUN(AC_PROG_CC_WORKS,
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[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
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AC_LANG_SAVE
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AC_LANG_C
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dnl We can't try running a program here because we don't know yet if
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dnl we're cross-compiling. And we can't check for that first, because the
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dnl cross-compiling test being fooled by non-working compiler installations
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dnl is the reason we're doing this in the first place.
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AC_TRY_LINK(, , ac_cv_prog_cc_works=yes, ac_cv_prog_cc_works=no)
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AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
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AC_LANG_RESTORE
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AC_MSG_RESULT($ac_cv_prog_cc_works)
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if test $ac_cv_prog_cc_works = no; then
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AC_MSG_ERROR([Installation or configuration problem: C compiler cannot create executables.])
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AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
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fi
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AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
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AC_MSG_RESULT($ac_cv_prog_cc_cross)
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cross_compiling=$ac_cv_prog_cc_cross
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])
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AC_DEFUN(AC_PROG_CXX_WORKS,
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[AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works])
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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dnl We can't try running a program here because we don't know yet if
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||||
dnl we're cross-compiling. And we can't check for that first, because the
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dnl cross-compiling test being fooled by non-working compiler installations
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||||
dnl is the reason we're doing this in the first place.
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||||
AC_TRY_LINK(, , ac_cv_prog_cxx_works=yes, ac_cv_prog_cxx_works=no)
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AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross)
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||||
AC_LANG_RESTORE
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||||
AC_MSG_RESULT($ac_cv_prog_cxx_works)
|
||||
if test $ac_cv_prog_cxx_works = no; then
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||||
AC_MSG_ERROR([Installation or configuration problem: C++ compiler cannot create executables.])
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||||
AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
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||||
fi
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||||
AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler])
|
||||
AC_MSG_RESULT($ac_cv_prog_cxx_cross)
|
||||
cross_compiling=$ac_cv_prog_cxx_cross
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||||
])
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||||
|
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AC_DEFUN(AC_PROG_CC_GNU,
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[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
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cat > conftest.c <<EOF
|
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#ifdef __GNUC__
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||||
yes;
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||||
#endif
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||||
EOF
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||||
if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
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||||
ac_cv_prog_gcc=yes
|
||||
else
|
||||
ac_cv_prog_gcc=no
|
||||
fi])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CXX_GNU,
|
||||
[AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
||||
cat > conftest.C <<EOF
|
||||
#ifdef __GNUC__
|
||||
yes;
|
||||
#endif
|
||||
EOF
|
||||
if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
|
||||
ac_cv_prog_gxx=yes
|
||||
else
|
||||
ac_cv_prog_gxx=no
|
||||
fi])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CC_G,
|
||||
[AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_cc_g,
|
||||
[echo 'void f(){}' > conftest.c
|
||||
if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
|
||||
ac_cv_prog_cc_g=yes
|
||||
else
|
||||
ac_cv_prog_cc_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CXX_G,
|
||||
[AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_cxx_g,
|
||||
[echo 'void f(){}' > conftest.cc
|
||||
if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
|
||||
ac_cv_prog_cxx_g=yes
|
||||
else
|
||||
ac_cv_prog_cxx_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])])
|
||||
|
||||
AC_DEFUN(AC_PROG_GCC_TRADITIONAL,
|
||||
[AC_REQUIRE([AC_PROG_CC])dnl
|
||||
AC_REQUIRE([AC_PROG_CPP])dnl
|
||||
@ -827,7 +837,8 @@ fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_FUNC_MMAP,
|
||||
[AC_CHECK_FUNCS(getpagesize)
|
||||
[AC_CHECK_HEADERS(unistd.h)
|
||||
AC_CHECK_FUNCS(getpagesize)
|
||||
AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
|
||||
[AC_TRY_RUN([
|
||||
/* Thanks to Mike Haertel and Jim Avera for this test.
|
||||
@ -855,25 +866,46 @@ AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
|
||||
#include <fcntl.h>
|
||||
#include <sys/mman.h>
|
||||
|
||||
/* This mess was copied from the GNU getpagesize.h. */
|
||||
#ifndef HAVE_GETPAGESIZE
|
||||
# include <sys/param.h>
|
||||
# ifdef EXEC_PAGESIZE
|
||||
# define getpagesize() EXEC_PAGESIZE
|
||||
# else
|
||||
# ifdef NBPG
|
||||
# define getpagesize() NBPG * CLSIZE
|
||||
# ifndef CLSIZE
|
||||
# define CLSIZE 1
|
||||
# endif
|
||||
# else
|
||||
# ifdef NBPC
|
||||
# define getpagesize() NBPC
|
||||
# else
|
||||
# define getpagesize() PAGESIZE /* SVR4 */
|
||||
# endif
|
||||
# endif
|
||||
# ifdef HAVE_UNISTD_H
|
||||
# include <unistd.h>
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Assume that all systems that can run configure have sys/param.h. */
|
||||
# ifndef HAVE_SYS_PARAM_H
|
||||
# define HAVE_SYS_PARAM_H 1
|
||||
# endif
|
||||
|
||||
# ifdef _SC_PAGESIZE
|
||||
# define getpagesize() sysconf(_SC_PAGESIZE)
|
||||
# else /* no _SC_PAGESIZE */
|
||||
# ifdef HAVE_SYS_PARAM_H
|
||||
# include <sys/param.h>
|
||||
# ifdef EXEC_PAGESIZE
|
||||
# define getpagesize() EXEC_PAGESIZE
|
||||
# else /* no EXEC_PAGESIZE */
|
||||
# ifdef NBPG
|
||||
# define getpagesize() NBPG * CLSIZE
|
||||
# ifndef CLSIZE
|
||||
# define CLSIZE 1
|
||||
# endif /* no CLSIZE */
|
||||
# else /* no NBPG */
|
||||
# ifdef NBPC
|
||||
# define getpagesize() NBPC
|
||||
# else /* no NBPC */
|
||||
# ifdef PAGESIZE
|
||||
# define getpagesize() PAGESIZE
|
||||
# endif /* PAGESIZE */
|
||||
# endif /* no NBPC */
|
||||
# endif /* no NBPG */
|
||||
# endif /* no EXEC_PAGESIZE */
|
||||
# else /* no HAVE_SYS_PARAM_H */
|
||||
# define getpagesize() 8192 /* punt totally */
|
||||
# endif /* no HAVE_SYS_PARAM_H */
|
||||
# endif /* no _SC_PAGESIZE */
|
||||
|
||||
#endif /* no HAVE_GETPAGESIZE */
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" { void *malloc(unsigned); }
|
||||
@ -1533,12 +1565,7 @@ dnl ### Checks for compiler characteristics
|
||||
|
||||
|
||||
AC_DEFUN(AC_C_CROSS,
|
||||
[# If we cannot run a trivial program, we are probably using a cross compiler.
|
||||
AC_CACHE_CHECK(whether using a cross-compiler, ac_cv_c_cross,
|
||||
[AC_TRY_RUN([main(){return(0);}],
|
||||
ac_cv_c_cross=no, ac_cv_c_cross=yes, ac_cv_c_cross=yes)])
|
||||
cross_compiling=$ac_cv_c_cross
|
||||
])
|
||||
[AC_OBSOLETE([$0], [; it has been merged into AC_PROG_CC])])
|
||||
|
||||
AC_DEFUN(AC_C_CHAR_UNSIGNED,
|
||||
[AC_CACHE_CHECK(whether char is unsigned, ac_cv_c_char_unsigned,
|
||||
|
||||
@ -6,8 +6,8 @@
|
||||
@c @setchapternewpage odd
|
||||
@c %**end of header
|
||||
|
||||
@set EDITION 2.11
|
||||
@set VERSION 2.11
|
||||
@set EDITION 2.11.1
|
||||
@set VERSION 2.11.1
|
||||
@set UPDATED November 1996
|
||||
|
||||
@iftex
|
||||
@ -1500,14 +1500,21 @@ fastest implementation.
|
||||
@ovindex CC
|
||||
@ovindex CFLAGS
|
||||
Determine a C compiler to use. If @code{CC} is not already set in the
|
||||
environment, check for @code{gcc}, and use @code{cc} if it's not found.
|
||||
environment, check for @code{gcc}, and use @code{cc} if that's not found.
|
||||
Set output variable @code{CC} to the name of the compiler found.
|
||||
|
||||
If using the GNU C compiler, set shell variable @code{GCC} to
|
||||
@samp{yes}, empty otherwise. If output variable @code{CFLAGS} was
|
||||
not already set, set it to @samp{-g -O} for the GNU C compiler
|
||||
(@samp{-O} on systems where GCC does not accept @samp{-g}), or @samp{-g}
|
||||
not already set, set it to @samp{-g -O2} for the GNU C compiler
|
||||
(@samp{-O2} on systems where GCC does not accept @samp{-g}), or @samp{-g}
|
||||
for other compilers.
|
||||
|
||||
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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CC_C_O
|
||||
@ -1544,9 +1551,16 @@ last resort set @code{CXX} to @code{gcc}.
|
||||
|
||||
If using the GNU C++ compiler, set shell variable @code{GXX} to
|
||||
@samp{yes}, empty otherwise. If output variable @code{CXXFLAGS} was
|
||||
not already set, set it to @samp{-g -O} for the GNU C++ compiler
|
||||
(@samp{-O} on systems where G++ does not accept @samp{-g}), or @samp{-g}
|
||||
not already set, set it to @samp{-g -O2} for the GNU C++ compiler
|
||||
(@samp{-O2} on systems where G++ does not accept @samp{-g}), or @samp{-g}
|
||||
for other compilers.
|
||||
|
||||
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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CXXCPP
|
||||
@ -2944,8 +2958,7 @@ compiling.
|
||||
If the C compiler being used does not produce executables that run on
|
||||
the system where @code{configure} is being run, then the test program is
|
||||
not run. If the optional shell commands @var{action-if-cross-compiling}
|
||||
are given, they are run instead and this macro calls @code{AC_C_CROSS}
|
||||
if it has not already been called. Otherwise, @code{configure} prints
|
||||
are given, they are run instead. Otherwise, @code{configure} prints
|
||||
an error message and exits.
|
||||
@end defmac
|
||||
|
||||
@ -2965,18 +2978,13 @@ the correct values for the target system (@pxref{Caching Results}).
|
||||
|
||||
To provide a default for calls of @code{AC_TRY_RUN} that are embedded in
|
||||
other macros, including a few of the ones that come with Autoconf, you
|
||||
can call @code{AC_C_CROSS} before running them. Then, if the shell
|
||||
can call @code{AC_PROG_CC} before running them. Then, if the shell
|
||||
variable @code{cross_compiling} is set to @samp{yes}, use an alternate
|
||||
method to get the results instead of calling the macros.
|
||||
|
||||
@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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
This macro is obsolete; it does nothing.
|
||||
@end defmac
|
||||
|
||||
@node Guidelines, Test Functions, Test Programs, Run Time
|
||||
@ -3171,13 +3179,17 @@ compiler is used in tests that follow in @file{configure.in}.
|
||||
@defmac AC_LANG_C
|
||||
@maindex LANG_C
|
||||
Do compilation tests using @code{CC} and @code{CPP} and use extension
|
||||
@file{.c} for test programs.
|
||||
@file{.c} for test programs. Set the shell variable
|
||||
@code{cross_compiling} to the value computed by @code{AC_PROG_CC} if it
|
||||
has been run, empty otherwise.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_LANG_CPLUSPLUS
|
||||
@maindex LANG_CPLUSPLUS
|
||||
Do compilation tests using @code{CXX} and @code{CXXCPP} and use
|
||||
extension @file{.C} for test programs.
|
||||
extension @file{.C} for test programs. Set the shell variable
|
||||
@code{cross_compiling} to the value computed by @code{AC_PROG_CXX} if
|
||||
it has been run, empty otherwise.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_LANG_SAVE
|
||||
|
||||
@ -61,7 +61,7 @@ M4FILES = autoconf.m4 acgeneral.m4 acoldnames.m4 acspecific.m4 autoheader.m4
|
||||
# Files that can be generated, but should be up to date for a distribution.
|
||||
DISTDEP = info Makefile
|
||||
# Files to distribute.
|
||||
DISTFILES = COPYING ChangeLog ChangeLog.1 INSTALL \
|
||||
DISTFILES = AUTHORS COPYING ChangeLog ChangeLog.1 INSTALL \
|
||||
Makefile.in NEWS README TODO $(M4FILES) \
|
||||
acconfig.h acfunctions acheaders acidentifiers \
|
||||
acmakevars acprograms autoconf.info* \
|
||||
|
||||
@ -6,8 +6,8 @@
|
||||
@c @setchapternewpage odd
|
||||
@c %**end of header
|
||||
|
||||
@set EDITION 2.11
|
||||
@set VERSION 2.11
|
||||
@set EDITION 2.11.1
|
||||
@set VERSION 2.11.1
|
||||
@set UPDATED November 1996
|
||||
|
||||
@iftex
|
||||
@ -1500,14 +1500,21 @@ fastest implementation.
|
||||
@ovindex CC
|
||||
@ovindex CFLAGS
|
||||
Determine a C compiler to use. If @code{CC} is not already set in the
|
||||
environment, check for @code{gcc}, and use @code{cc} if it's not found.
|
||||
environment, check for @code{gcc}, and use @code{cc} if that's not found.
|
||||
Set output variable @code{CC} to the name of the compiler found.
|
||||
|
||||
If using the GNU C compiler, set shell variable @code{GCC} to
|
||||
@samp{yes}, empty otherwise. If output variable @code{CFLAGS} was
|
||||
not already set, set it to @samp{-g -O} for the GNU C compiler
|
||||
(@samp{-O} on systems where GCC does not accept @samp{-g}), or @samp{-g}
|
||||
not already set, set it to @samp{-g -O2} for the GNU C compiler
|
||||
(@samp{-O2} on systems where GCC does not accept @samp{-g}), or @samp{-g}
|
||||
for other compilers.
|
||||
|
||||
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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CC_C_O
|
||||
@ -1544,9 +1551,16 @@ last resort set @code{CXX} to @code{gcc}.
|
||||
|
||||
If using the GNU C++ compiler, set shell variable @code{GXX} to
|
||||
@samp{yes}, empty otherwise. If output variable @code{CXXFLAGS} was
|
||||
not already set, set it to @samp{-g -O} for the GNU C++ compiler
|
||||
(@samp{-O} on systems where G++ does not accept @samp{-g}), or @samp{-g}
|
||||
not already set, set it to @samp{-g -O2} for the GNU C++ compiler
|
||||
(@samp{-O2} on systems where G++ does not accept @samp{-g}), or @samp{-g}
|
||||
for other compilers.
|
||||
|
||||
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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_PROG_CXXCPP
|
||||
@ -2944,8 +2958,7 @@ compiling.
|
||||
If the C compiler being used does not produce executables that run on
|
||||
the system where @code{configure} is being run, then the test program is
|
||||
not run. If the optional shell commands @var{action-if-cross-compiling}
|
||||
are given, they are run instead and this macro calls @code{AC_C_CROSS}
|
||||
if it has not already been called. Otherwise, @code{configure} prints
|
||||
are given, they are run instead. Otherwise, @code{configure} prints
|
||||
an error message and exits.
|
||||
@end defmac
|
||||
|
||||
@ -2965,18 +2978,13 @@ the correct values for the target system (@pxref{Caching Results}).
|
||||
|
||||
To provide a default for calls of @code{AC_TRY_RUN} that are embedded in
|
||||
other macros, including a few of the ones that come with Autoconf, you
|
||||
can call @code{AC_C_CROSS} before running them. Then, if the shell
|
||||
can call @code{AC_PROG_CC} before running them. Then, if the shell
|
||||
variable @code{cross_compiling} is set to @samp{yes}, use an alternate
|
||||
method to get the results instead of calling the macros.
|
||||
|
||||
@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}.
|
||||
In other words, this tests whether the build system type is different
|
||||
from the host system type (the target system type is irrelevant to this
|
||||
test). @xref{Manual Configuration}, for more on support for cross compiling.
|
||||
This macro is obsolete; it does nothing.
|
||||
@end defmac
|
||||
|
||||
@node Guidelines, Test Functions, Test Programs, Run Time
|
||||
@ -3171,13 +3179,17 @@ compiler is used in tests that follow in @file{configure.in}.
|
||||
@defmac AC_LANG_C
|
||||
@maindex LANG_C
|
||||
Do compilation tests using @code{CC} and @code{CPP} and use extension
|
||||
@file{.c} for test programs.
|
||||
@file{.c} for test programs. Set the shell variable
|
||||
@code{cross_compiling} to the value computed by @code{AC_PROG_CC} if it
|
||||
has been run, empty otherwise.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_LANG_CPLUSPLUS
|
||||
@maindex LANG_CPLUSPLUS
|
||||
Do compilation tests using @code{CXX} and @code{CXXCPP} and use
|
||||
extension @file{.C} for test programs.
|
||||
extension @file{.C} for test programs. Set the shell variable
|
||||
@code{cross_compiling} to the value computed by @code{AC_PROG_CXX} if
|
||||
it has been run, empty otherwise.
|
||||
@end defmac
|
||||
|
||||
@defmac AC_LANG_SAVE
|
||||
|
||||
@ -52,7 +52,7 @@ dnl
|
||||
divert(-1)dnl Throw away output until AC_INIT is called.
|
||||
changequote([, ])
|
||||
|
||||
define(AC_ACVERSION, 2.11)
|
||||
define(AC_ACVERSION, 2.11.1)
|
||||
|
||||
dnl Some old m4's don't support m4exit. But they provide
|
||||
dnl equivalent functionality by core dumping because of the
|
||||
@ -1178,6 +1178,7 @@ ac_ext=c
|
||||
ac_cpp='$CPP $CPPFLAGS'
|
||||
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
|
||||
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
|
||||
cross_compiling=$ac_cv_prog_cc_cross
|
||||
])
|
||||
|
||||
dnl AC_LANG_CPLUSPLUS()
|
||||
@ -1188,6 +1189,7 @@ ac_ext=C
|
||||
ac_cpp='$CXXCPP $CPPFLAGS'
|
||||
ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&AC_FD_CC'
|
||||
ac_link='${CXX-g++} -o conftest $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AC_FD_CC'
|
||||
cross_compiling=$ac_cv_prog_cxx_cross
|
||||
])
|
||||
|
||||
dnl Push the current language on a stack.
|
||||
@ -1420,6 +1422,31 @@ fi
|
||||
undefine([AC_VAR_NAME])dnl
|
||||
])
|
||||
|
||||
dnl Check whether the current compiler produces executables, and
|
||||
dnl whether those executables are native to the build system.
|
||||
dnl Before calling this, call AC_LANG_* to set the right language.
|
||||
dnl AC_TRY_COMPILER(TEST-PROGRAM, WORKING-CACHE-ID, CROSS-CACHE-ID)
|
||||
AC_DEFUN(AC_TRY_COMPILER,
|
||||
[cat > conftest.$ac_ext <<EOF
|
||||
[#]line __oline__ "configure"
|
||||
#include "confdefs.h"
|
||||
[$1]
|
||||
EOF
|
||||
if AC_TRY_EVAL(ac_link) && test -s conftest; then
|
||||
[$2]=yes
|
||||
# If we can't run a trivial program, we are probably using a cross compiler.
|
||||
if (./conftest; exit) 2>/dev/null; then
|
||||
[$3]=no
|
||||
else
|
||||
[$3]=yes
|
||||
fi
|
||||
else
|
||||
echo "configure: failed program was:" >&AC_FD_CC
|
||||
cat conftest.$ac_ext >&AC_FD_CC
|
||||
[$2]=no
|
||||
fi
|
||||
rm -fr conftest*])
|
||||
|
||||
|
||||
dnl ### Checking for libraries
|
||||
|
||||
@ -1630,8 +1657,7 @@ ifelse([$4], , , [ rm -rf conftest*
|
||||
$4
|
||||
])dnl
|
||||
fi
|
||||
rm -f conftest*]
|
||||
)
|
||||
rm -f conftest*])
|
||||
|
||||
|
||||
dnl ### Checking for run-time features
|
||||
@ -1640,8 +1666,7 @@ dnl ### Checking for run-time features
|
||||
dnl AC_TRY_RUN(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE
|
||||
dnl [, ACTION-IF-CROSS-COMPILING]]])
|
||||
AC_DEFUN(AC_TRY_RUN,
|
||||
[AC_REQUIRE([AC_C_CROSS])dnl
|
||||
if test "$cross_compiling" = yes; then
|
||||
[if test "$cross_compiling" = yes; then
|
||||
ifelse([$4], ,
|
||||
[errprint(__file__:__line__: warning: [AC_TRY_RUN] called without default to allow cross compiling
|
||||
)dnl
|
||||
@ -1664,9 +1689,10 @@ extern "C" void exit(int);
|
||||
])dnl
|
||||
[$1]
|
||||
EOF
|
||||
AC_TRY_EVAL(ac_link)
|
||||
if test -s conftest && (./conftest; exit) 2>/dev/null; then
|
||||
ifelse([$2], , :, [$2])
|
||||
if AC_TRY_EVAL(ac_link) && test -s conftest && (./conftest; exit) 2>/dev/null
|
||||
then
|
||||
ifelse([$2], , :, [rm -rf conftest*
|
||||
$2])
|
||||
else
|
||||
echo "configure: failed program was:" >&AC_FD_CC
|
||||
cat conftest.$ac_ext >&AC_FD_CC
|
||||
@ -2081,7 +2107,8 @@ s%@srcdir@%$srcdir%g
|
||||
s%@top_srcdir@%$top_srcdir%g
|
||||
ifdef([AC_PROVIDE_AC_PROG_INSTALL], [s%@INSTALL@%$INSTALL%g
|
||||
])dnl
|
||||
" $ac_given_srcdir/$ac_file_in | eval "$ac_sed_cmds" > $ac_file
|
||||
dnl The parens around the eval prevent an "illegal io" in Ultrix sh.
|
||||
" $ac_given_srcdir/$ac_file_in | (eval "$ac_sed_cmds") > $ac_file
|
||||
dnl This would break Makefile dependencies.
|
||||
dnl if cmp -s $ac_file conftest.out 2>/dev/null; then
|
||||
dnl echo "$ac_file is unchanged"
|
||||
@ -2120,7 +2147,7 @@ ac_eC=' '
|
||||
ac_eD='%g'
|
||||
changequote([, ])dnl
|
||||
|
||||
if test -z "$CONFIG_HEADERS"; then
|
||||
if test "${CONFIG_HEADERS+set}" != set; then
|
||||
EOF
|
||||
dnl Support passing AC_CONFIG_HEADER a value containing shell variables.
|
||||
cat >> $CONFIG_STATUS <<EOF
|
||||
|
||||
@ -79,39 +79,20 @@ if test -z "$CC"; then
|
||||
fi
|
||||
|
||||
AC_PROG_CC_WORKS
|
||||
AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
||||
cat > conftest.c <<EOF
|
||||
#ifdef __GNUC__
|
||||
yes;
|
||||
#endif
|
||||
EOF
|
||||
if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
|
||||
ac_cv_prog_gcc=yes
|
||||
else
|
||||
ac_cv_prog_gcc=no
|
||||
fi])
|
||||
AC_PROG_CC_GNU
|
||||
|
||||
if test $ac_cv_prog_gcc = yes; then
|
||||
GCC=yes
|
||||
dnl Check whether -g works even if CFLAGS is set, in case the package
|
||||
dnl Check whether -g works, even if CFLAGS is set, in case the package
|
||||
dnl plays around with CFLAGS (such as to build both debugging and
|
||||
dnl normal versions of a library), tasteless as that idea is.
|
||||
ac_test_CFLAGS="${CFLAGS+set}"
|
||||
ac_save_CFLAGS="$CFLAGS"
|
||||
CFLAGS=
|
||||
AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_gcc_g,
|
||||
[echo 'void f(){}' > conftest.c
|
||||
if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
|
||||
ac_cv_prog_gcc_g=yes
|
||||
else
|
||||
ac_cv_prog_gcc_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])
|
||||
AC_PROG_CC_G
|
||||
if test "$ac_test_CFLAGS" = set; then
|
||||
CFLAGS="$ac_save_CFLAGS"
|
||||
elif test $ac_cv_prog_gcc_g = yes; then
|
||||
elif test $ac_cv_prog_cc_g = yes; then
|
||||
CFLAGS="-g -O2"
|
||||
else
|
||||
CFLAGS="-O2"
|
||||
@ -127,39 +108,20 @@ AC_DEFUN(AC_PROG_CXX,
|
||||
AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
|
||||
|
||||
AC_PROG_CXX_WORKS
|
||||
AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
||||
cat > conftest.C <<EOF
|
||||
#ifdef __GNUC__
|
||||
yes;
|
||||
#endif
|
||||
EOF
|
||||
if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
|
||||
ac_cv_prog_gxx=yes
|
||||
else
|
||||
ac_cv_prog_gxx=no
|
||||
fi])
|
||||
AC_PROG_CXX_GNU
|
||||
|
||||
if test $ac_cv_prog_gxx = yes; then
|
||||
GXX=yes
|
||||
dnl Check whether -g works even if CXXFLAGS is set, in case the package
|
||||
dnl Check whether -g works, even if CXXFLAGS is set, in case the package
|
||||
dnl plays around with CXXFLAGS (such as to build both debugging and
|
||||
dnl normal versions of a library), tasteless as that idea is.
|
||||
ac_test_CXXFLAGS="${CXXFLAGS+set}"
|
||||
ac_save_CXXFLAGS="$CXXFLAGS"
|
||||
CXXFLAGS=
|
||||
AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_gxx_g,
|
||||
[echo 'void f(){}' > conftest.cc
|
||||
if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
|
||||
ac_cv_prog_gxx_g=yes
|
||||
else
|
||||
ac_cv_prog_gxx_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])
|
||||
dnl
|
||||
AC_PROG_CXX_G
|
||||
if test "$ac_test_CXXFLAGS" = set; then
|
||||
CXXFLAGS="$ac_save_CXXFLAGS"
|
||||
elif test $ac_cv_prog_gxx_g = yes; then
|
||||
elif test $ac_cv_prog_cxx_g = yes; then
|
||||
CXXFLAGS="-g -O2"
|
||||
else
|
||||
CXXFLAGS="-O2"
|
||||
@ -174,34 +136,82 @@ AC_DEFUN(AC_PROG_CC_WORKS,
|
||||
[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
|
||||
AC_LANG_SAVE
|
||||
AC_LANG_C
|
||||
dnl We can't try running a program here because we don't know yet if
|
||||
dnl we're cross-compiling. And we can't check for that first, because the
|
||||
dnl cross-compiling test being fooled by non-working compiler installations
|
||||
dnl is the reason we're doing this in the first place.
|
||||
AC_TRY_LINK(, , ac_cv_prog_cc_works=yes, ac_cv_prog_cc_works=no)
|
||||
AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
|
||||
AC_LANG_RESTORE
|
||||
AC_MSG_RESULT($ac_cv_prog_cc_works)
|
||||
if test $ac_cv_prog_cc_works = no; then
|
||||
AC_MSG_ERROR([Installation or configuration problem: C compiler cannot create executables.])
|
||||
AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
|
||||
fi
|
||||
AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
|
||||
AC_MSG_RESULT($ac_cv_prog_cc_cross)
|
||||
cross_compiling=$ac_cv_prog_cc_cross
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_PROG_CXX_WORKS,
|
||||
[AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works])
|
||||
AC_LANG_SAVE
|
||||
AC_LANG_CPLUSPLUS
|
||||
dnl We can't try running a program here because we don't know yet if
|
||||
dnl we're cross-compiling. And we can't check for that first, because the
|
||||
dnl cross-compiling test being fooled by non-working compiler installations
|
||||
dnl is the reason we're doing this in the first place.
|
||||
AC_TRY_LINK(, , ac_cv_prog_cxx_works=yes, ac_cv_prog_cxx_works=no)
|
||||
AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross)
|
||||
AC_LANG_RESTORE
|
||||
AC_MSG_RESULT($ac_cv_prog_cxx_works)
|
||||
if test $ac_cv_prog_cxx_works = no; then
|
||||
AC_MSG_ERROR([Installation or configuration problem: C++ compiler cannot create executables.])
|
||||
AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
|
||||
fi
|
||||
AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler])
|
||||
AC_MSG_RESULT($ac_cv_prog_cxx_cross)
|
||||
cross_compiling=$ac_cv_prog_cxx_cross
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_PROG_CC_GNU,
|
||||
[AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
||||
cat > conftest.c <<EOF
|
||||
#ifdef __GNUC__
|
||||
yes;
|
||||
#endif
|
||||
EOF
|
||||
if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
|
||||
ac_cv_prog_gcc=yes
|
||||
else
|
||||
ac_cv_prog_gcc=no
|
||||
fi])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CXX_GNU,
|
||||
[AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
|
||||
[dnl The semicolon is to pacify NeXT's syntax-checking cpp.
|
||||
cat > conftest.C <<EOF
|
||||
#ifdef __GNUC__
|
||||
yes;
|
||||
#endif
|
||||
EOF
|
||||
if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
|
||||
ac_cv_prog_gxx=yes
|
||||
else
|
||||
ac_cv_prog_gxx=no
|
||||
fi])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CC_G,
|
||||
[AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_cc_g,
|
||||
[echo 'void f(){}' > conftest.c
|
||||
if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
|
||||
ac_cv_prog_cc_g=yes
|
||||
else
|
||||
ac_cv_prog_cc_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])])
|
||||
|
||||
AC_DEFUN(AC_PROG_CXX_G,
|
||||
[AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_cxx_g,
|
||||
[echo 'void f(){}' > conftest.cc
|
||||
if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
|
||||
ac_cv_prog_cxx_g=yes
|
||||
else
|
||||
ac_cv_prog_cxx_g=no
|
||||
fi
|
||||
rm -f conftest*
|
||||
])])
|
||||
|
||||
AC_DEFUN(AC_PROG_GCC_TRADITIONAL,
|
||||
[AC_REQUIRE([AC_PROG_CC])dnl
|
||||
AC_REQUIRE([AC_PROG_CPP])dnl
|
||||
@ -827,7 +837,8 @@ fi
|
||||
])
|
||||
|
||||
AC_DEFUN(AC_FUNC_MMAP,
|
||||
[AC_CHECK_FUNCS(getpagesize)
|
||||
[AC_CHECK_HEADERS(unistd.h)
|
||||
AC_CHECK_FUNCS(getpagesize)
|
||||
AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
|
||||
[AC_TRY_RUN([
|
||||
/* Thanks to Mike Haertel and Jim Avera for this test.
|
||||
@ -855,25 +866,46 @@ AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
|
||||
#include <fcntl.h>
|
||||
#include <sys/mman.h>
|
||||
|
||||
/* This mess was copied from the GNU getpagesize.h. */
|
||||
#ifndef HAVE_GETPAGESIZE
|
||||
# include <sys/param.h>
|
||||
# ifdef EXEC_PAGESIZE
|
||||
# define getpagesize() EXEC_PAGESIZE
|
||||
# else
|
||||
# ifdef NBPG
|
||||
# define getpagesize() NBPG * CLSIZE
|
||||
# ifndef CLSIZE
|
||||
# define CLSIZE 1
|
||||
# endif
|
||||
# else
|
||||
# ifdef NBPC
|
||||
# define getpagesize() NBPC
|
||||
# else
|
||||
# define getpagesize() PAGESIZE /* SVR4 */
|
||||
# endif
|
||||
# endif
|
||||
# ifdef HAVE_UNISTD_H
|
||||
# include <unistd.h>
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Assume that all systems that can run configure have sys/param.h. */
|
||||
# ifndef HAVE_SYS_PARAM_H
|
||||
# define HAVE_SYS_PARAM_H 1
|
||||
# endif
|
||||
|
||||
# ifdef _SC_PAGESIZE
|
||||
# define getpagesize() sysconf(_SC_PAGESIZE)
|
||||
# else /* no _SC_PAGESIZE */
|
||||
# ifdef HAVE_SYS_PARAM_H
|
||||
# include <sys/param.h>
|
||||
# ifdef EXEC_PAGESIZE
|
||||
# define getpagesize() EXEC_PAGESIZE
|
||||
# else /* no EXEC_PAGESIZE */
|
||||
# ifdef NBPG
|
||||
# define getpagesize() NBPG * CLSIZE
|
||||
# ifndef CLSIZE
|
||||
# define CLSIZE 1
|
||||
# endif /* no CLSIZE */
|
||||
# else /* no NBPG */
|
||||
# ifdef NBPC
|
||||
# define getpagesize() NBPC
|
||||
# else /* no NBPC */
|
||||
# ifdef PAGESIZE
|
||||
# define getpagesize() PAGESIZE
|
||||
# endif /* PAGESIZE */
|
||||
# endif /* no NBPC */
|
||||
# endif /* no NBPG */
|
||||
# endif /* no EXEC_PAGESIZE */
|
||||
# else /* no HAVE_SYS_PARAM_H */
|
||||
# define getpagesize() 8192 /* punt totally */
|
||||
# endif /* no HAVE_SYS_PARAM_H */
|
||||
# endif /* no _SC_PAGESIZE */
|
||||
|
||||
#endif /* no HAVE_GETPAGESIZE */
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" { void *malloc(unsigned); }
|
||||
@ -1533,12 +1565,7 @@ dnl ### Checks for compiler characteristics
|
||||
|
||||
|
||||
AC_DEFUN(AC_C_CROSS,
|
||||
[# If we cannot run a trivial program, we are probably using a cross compiler.
|
||||
AC_CACHE_CHECK(whether using a cross-compiler, ac_cv_c_cross,
|
||||
[AC_TRY_RUN([main(){return(0);}],
|
||||
ac_cv_c_cross=no, ac_cv_c_cross=yes, ac_cv_c_cross=yes)])
|
||||
cross_compiling=$ac_cv_c_cross
|
||||
])
|
||||
[AC_OBSOLETE([$0], [; it has been merged into AC_PROG_CC])])
|
||||
|
||||
AC_DEFUN(AC_C_CHAR_UNSIGNED,
|
||||
[AC_CACHE_CHECK(whether char is unsigned, ac_cv_c_char_unsigned,
|
||||
|
||||
@ -14,12 +14,16 @@ memset AC_HEADER_STDC
|
||||
index AC_HEADER_STDC
|
||||
rindex AC_HEADER_STDC
|
||||
getgroups AC_TYPE_GETGROUPS
|
||||
getpgrp AC_FUNC_GETPGRP
|
||||
setpgrp AC_FUNC_SETPGRP
|
||||
signal AC_TYPE_SIGNAL
|
||||
alloca AC_FUNC_ALLOCA
|
||||
fnmatch AC_FUNC_FNMATCH
|
||||
getloadavg AC_FUNC_GETLOADAVG
|
||||
mmap AC_FUNC_MMAP
|
||||
setvbuf AC_FUNC_SETVBUF_REVERSED
|
||||
strcoll AC_FUNC_STRCOLL
|
||||
strftime AC_FUNC_STRFTIME
|
||||
utime AC_FUNC_UTIME_NULL
|
||||
vfork AC_FUNC_VFORK
|
||||
vprintf AC_FUNC_VPRINTF
|
||||
@ -28,7 +32,6 @@ vsprintf AC_FUNC_VPRINTF
|
||||
wait3 AC_FUNC_WAIT3
|
||||
|
||||
# Others.
|
||||
fnmatch AC_CHECK_FUNCS
|
||||
ftime AC_CHECK_FUNCS
|
||||
gethostname AC_CHECK_FUNCS
|
||||
gettimeofday AC_CHECK_FUNCS
|
||||
@ -49,7 +52,6 @@ stime AC_CHECK_FUNCS
|
||||
strcspn AC_CHECK_FUNCS
|
||||
strdup AC_CHECK_FUNCS
|
||||
strerror AC_CHECK_FUNCS
|
||||
strftime AC_CHECK_FUNCS
|
||||
strspn AC_CHECK_FUNCS
|
||||
strstr AC_CHECK_FUNCS
|
||||
strtod AC_CHECK_FUNCS
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user