# This file is part of Autoconf. -*- Autoconf -*- # Macros that test for specific features. # Copyright (C) 1992, 93, 94, 95, 96, 98, 99, 2000 # Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. # # As a special exception, the Free Software Foundation gives unlimited # permission to copy, distribute and modify the configure scripts that # are the output of Autoconf. You need not follow the terms of the GNU # General Public License when using or distributing such scripts, even # though portions of the text of Autoconf appear in them. The GNU # General Public License (GPL) does govern all other use of the material # that constitutes the Autoconf program. # # Certain portions of the Autoconf source text are designed to be copied # (in certain cases, depending on the input) into the output of # Autoconf. We call these the "data" portions. The rest of the Autoconf # source text consists of comments plus executable code that decides which # of the data portions to output in any given case. We call these # comments and executable code the "non-data" portions. Autoconf never # copies any of the non-data portions into its output. # # This special exception to the GPL applies to versions of Autoconf # released by the Free Software Foundation. When you make and # distribute a modified version of Autoconf, you may extend this special # exception to the GPL to apply to your modified version as well, *unless* # your modified version has the potential to copy into its output some # of the text that was the non-data portion of the version that you started # with. (In other words, unless your change moves or copies text from # the non-data portions to the data portions.) If your modification has # such potential, you must delete any notice of this special exception # to the GPL from your modified version. # # Written by David MacKenzie, with help from # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, # Roland McGrath, Noah Friedman, david d zuhn, and many others. ## --------------------- ## ## Checks for programs. ## ## --------------------- ## # _AC_PROG_ECHO # ------------- # Check whether to use -n, \c, or newline-tab to separate # checking messages from result messages. # Don't try to cache, since the results of this macro are needed to # display the checking message. In addition, caching something used once # has little interest. # Idea borrowed from dist 3.0. Use `*c*,', not `*c,' because if `\c' # failed there is also a new-line to match. define([_AC_PROG_ECHO], [case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in *c*,-n*) ECHO_N= ECHO_C=' ' ECHO_T=' ' ;; *c*,* ) ECHO_N=-n ECHO_C= ECHO_T= ;; *) ECHO_N= ECHO_C='\c' ECHO_T= ;; esac AC_SUBST(ECHO_C)dnl AC_SUBST(ECHO_N)dnl AC_SUBST(ECHO_T)dnl ])# _AC_PROG_ECHO # AC_PROG_MAKE_SET # ---------------- # Define SET_MAKE to set ${MAKE} if make doesn't. AC_DEFUN([AC_PROG_MAKE_SET], [AC_MSG_CHECKING(whether ${MAKE-make} sets \${MAKE}) set dummy ${MAKE-make}; ac_make=`echo "$[2]" | sed 'y,./+-,__p_,'` AC_CACHE_VAL(ac_cv_prog_make_${ac_make}_set, [cat >conftestmake <<\EOF all: @echo 'ac_maketemp="${MAKE}"' EOF # GNU make sometimes prints "make[1]: Entering...", which would confuse us. eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=` if test -n "$ac_maketemp"; then eval ac_cv_prog_make_${ac_make}_set=yes else eval ac_cv_prog_make_${ac_make}_set=no fi rm -f conftestmake])dnl if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then AC_MSG_RESULT(yes) SET_MAKE= else AC_MSG_RESULT(no) SET_MAKE="MAKE=${MAKE-make}" fi AC_SUBST([SET_MAKE])dnl ])# AC_PROG_MAKE_SET AC_DEFUN([AC_PROG_RANLIB], [AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)]) # Check for mawk first since it's generally faster. AC_DEFUN([AC_PROG_AWK], [AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )]) # AC_PROG_YACC # ------------ AC_DEFUN([AC_PROG_YACC], [AC_CHECK_PROGS(YACC, 'bison -y' byacc, yacc)]) # AC_PROG_LEX # ----------- # Look for flex or lex. Set its associated library to LEXLIB. # Check if lex declares yytext as a char * by default, not a char[]. AC_DEFUN([AC_PROG_LEX], [AH_CHECK_LIB(fl)dnl AH_CHECK_LIB(l)dnl AC_CHECK_PROG(LEX, flex, flex, lex) if test -z "$LEXLIB" then case $LEX in flex*) ac_lib=fl ;; *) ac_lib=l ;; esac AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib") fi AC_SUBST(LEXLIB) _AC_DECL_YYTEXT]) # _AC_DECL_YYTEXT # --------------- # Check if lex declares yytext as a char * by default, not a char[]. define([_AC_DECL_YYTEXT], [AC_REQUIRE_CPP()dnl AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root, [# The minimal lex program is just a single line: %%. But some broken lexes # (Solaris, I think it was) want two %% lines, so accommodate them. echo '%% %%' | $LEX if test -f lex.yy.c; then ac_cv_prog_lex_root=lex.yy elif test -f lexyy.c; then ac_cv_prog_lex_root=lexyy else AC_MSG_ERROR(cannot find output from $LEX; giving up) fi]) LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root AC_SUBST(LEX_OUTPUT_ROOT)dnl AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer, [# POSIX says lex can declare yytext either as a pointer or an array; the # default is implementation-dependent. Figure out which it is, since # not all implementations provide the %pointer and %array declarations. ac_cv_prog_lex_yytext_pointer=no echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c ac_save_LIBS=$LIBS LIBS="$LIBS $LEXLIB" AC_LINK_IFELSE([`cat $LEX_OUTPUT_ROOT.c`], ac_cv_prog_lex_yytext_pointer=yes) LIBS=$ac_save_LIBS rm -f "${LEX_OUTPUT_ROOT}.c" ]) dnl if test $ac_cv_prog_lex_yytext_pointer = yes; then AC_DEFINE(YYTEXT_POINTER, 1, [Define if `lex' declares `yytext' as a `char *' by default, not a `char[]'.]) fi ])# _AC_DECL_YYTEXT # Require AC_PROG_LEX in case some people were just calling this macro. AU_DEFUN([AC_DECL_YYTEXT], [AC_REQUIRE([AC_PROG_LEX])]) # AC_PROG_INSTALL # --------------- AC_DEFUN([AC_PROG_INSTALL], [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl # Find a good install program. We prefer a C program (faster), # so one script is as good as another. But avoid the broken or # incompatible versions: # SysV /etc/install, /usr/sbin/install # SunOS /usr/etc/install # IRIX /sbin/install # AIX /bin/install # AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag # AFS /usr/afsws/bin/install, which mishandles nonexistent args # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" # ./install, which can be erroneously created by make from ./install.sh. AC_MSG_CHECKING(for a BSD compatible install) if test -z "$INSTALL"; then AC_CACHE_VAL(ac_cv_path_install, [ ac_save_IFS=$IFS; IFS=':' for ac_dir in $PATH; do # Account for people who put trailing slashes in PATH elements. case $ac_dir/ in /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;; *) # OSF1 and SCO ODT 3.0 have their own names for install. # Don't use installbsd from OSF since it installs stuff as root # by default. for ac_prog in ginstall scoinst install; do if test -f $ac_dir/$ac_prog; then if test $ac_prog = install && grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX install. 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AC_MSG_RESULT($INSTALL) # Use test -z because SunOS4 sh mishandles braces in ${var-val}. # It thinks the first close brace ends the variable substitution. test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' AC_SUBST(INSTALL_PROGRAM)dnl test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' AC_SUBST(INSTALL_SCRIPT)dnl test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' AC_SUBST(INSTALL_DATA)dnl ])# AC_PROG_INSTALL # AC_PROG_LN_S # ------------ AC_DEFUN([AC_PROG_LN_S], [AC_MSG_CHECKING(whether ln -s works) AC_CACHE_VAL(ac_cv_prog_LN_S, [rm -f conftest.sym conftest.file echo >conftest.file if ln -s conftest.file conftest.sym 2>/dev/null; then ac_cv_prog_LN_S="ln -s" else ac_cv_prog_LN_S=ln fi])dnl LN_S=$ac_cv_prog_LN_S if test "$ac_cv_prog_LN_S" = "ln -s"; then AC_MSG_RESULT(yes) else AC_MSG_RESULT(no) fi AC_SUBST(LN_S)dnl ])# AC_PROG_LN_S # AC_RSH # ------ # I don't know what it used to do, but it no longer does. AU_DEFUN([AC_RSH], [AC_DIAGNOSE([obsolete], [$0: is no longer supported. Remove this warning when you adjust the code.])]) ## ------------------------- ## ## Checks for declarations. ## ## ------------------------- ## # AC_DECL_SYS_SIGLIST # ------------------- AC_DEFUN([AC_DECL_SYS_SIGLIST], [AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h], ac_cv_decl_sys_siglist, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([#include #include /* NetBSD declares sys_siglist in unistd.h. */ #if HAVE_UNISTD_H # include #endif ], [char *msg = *(sys_siglist + 1);])], [ac_cv_decl_sys_siglist=yes], [ac_cv_decl_sys_siglist=no])]) if test $ac_cv_decl_sys_siglist = yes; then AC_DEFINE(SYS_SIGLIST_DECLARED, 1, [Define if `sys_siglist' is declared by or .]) fi ])# AC_DECL_SYS_SIGLIST ## ------------------------- ## ## Checks for header files. ## ## ------------------------- ## # _AC_CHECK_HEADER_DIRENT(HEADER-FILE, # [ACTION-IF-FOUND], [ACTION-IF-NOT_FOUND]) # ----------------------------------------------------------------- # Like AC_CHECK_HEADER, except also make sure that HEADER-FILE # defines the type `DIR'. dirent.h on NextStep 3.2 doesn't. define([_AC_CHECK_HEADER_DIRENT], [AC_VAR_PUSHDEF([ac_Header], [ac_cv_header_dirent_$1])dnl AC_CACHE_CHECK([for $1 that defines DIR], ac_Header, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include #include <$1> ], [DIR *dirp = 0;])], [AC_VAR_SET(ac_Header, yes)], [AC_VAR_SET(ac_Header, no)])]) AC_SHELL_IFELSE([test AC_VAR_GET(ac_Header) = yes], [$2], [$3])dnl AC_VAR_POPDEF([ac_Header])dnl ])# _AC_CHECK_HEADER_DIRENT # AH_CHECK_HEADERS_DIRENT(HEADERS...) # ----------------------------------- define([AH_CHECK_HEADERS_DIRENT], [AC_FOREACH([AC_Header], [$1], [AH_TEMPLATE(AC_TR_CPP(HAVE_[]AC_Header), [Define if you have the <]AC_Header[> header file, and it defines `DIR'.])])]) # AC_HEADER_DIRENT # ---------------- AC_DEFUN([AC_HEADER_DIRENT], [AH_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h) ac_header_dirent=no for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do _AC_CHECK_HEADER_DIRENT($ac_hdr, [AC_DEFINE_UNQUOTED(AC_TR_CPP(HAVE_$ac_hdr), 1) ac_header_dirent=$ac_hdr; break]) done # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix. if test $ac_header_dirent = dirent.h; then AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir") else AC_CHECK_LIB(x, opendir, LIBS="$LIBS -lx") fi ])# AC_HEADER_DIRENT # AC_HEADER_MAJOR # --------------- AC_DEFUN([AC_HEADER_MAJOR], [AC_CACHE_CHECK(whether sys/types.h defines makedev, ac_cv_header_sys_types_h_makedev, [AC_TRY_LINK([#include ], [return makedev(0, 0);], ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no) ]) if test $ac_cv_header_sys_types_h_makedev = no; then AC_CHECK_HEADER(sys/mkdev.h, [AC_DEFINE(MAJOR_IN_MKDEV, 1, [Define if `major', `minor', and `makedev' are declared in .])]) if test $ac_cv_header_sys_mkdev_h = no; then AC_CHECK_HEADER(sys/sysmacros.h, [AC_DEFINE(MAJOR_IN_SYSMACROS, 1, [Define if `major', `minor', and `makedev' are declared in .])]) fi fi ])# AC_HEADER_MAJOR # AC_HEADER_STAT # -------------- # FIXME: Shouldn't this be named AC_HEADER_SYS_STAT? AC_DEFUN([AC_HEADER_STAT], [AC_CACHE_CHECK(whether stat file-mode macros are broken, ac_cv_header_stat_broken, [AC_EGREP_CPP([You lose], [#include #include #if defined(S_ISBLK) && defined(S_IFDIR) # if S_ISBLK (S_IFDIR) You lose. # endif #endif #if defined(S_ISBLK) && defined(S_IFCHR) # if S_ISBLK (S_IFCHR) You lose. # endif #endif #if defined(S_ISLNK) && defined(S_IFREG) # if S_ISLNK (S_IFREG) You lose. # endif #endif #if defined(S_ISSOCK) && defined(S_IFREG) # if S_ISSOCK (S_IFREG) You lose. # endif #endif ], ac_cv_header_stat_broken=yes, ac_cv_header_stat_broken=no)]) if test $ac_cv_header_stat_broken = yes; then AC_DEFINE(STAT_MACROS_BROKEN, 1, [Define if the `S_IS*' macros in do not work properly.]) fi ])# AC_HEADER_STAT # AC_HEADER_STDC # -------------- AC_DEFUN([AC_HEADER_STDC], [AC_REQUIRE_CPP()dnl AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc, [AC_TRY_CPP([#include #include #include #include ], ac_cv_header_stdc=yes, ac_cv_header_stdc=no) if test $ac_cv_header_stdc = yes; then # SunOS 4.x string.h does not declare mem*, contrary to ANSI. AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no) fi if test $ac_cv_header_stdc = yes; then # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI. AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no) fi if test $ac_cv_header_stdc = yes; then # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi. AC_TRY_RUN( [#include #if ((' ' & 0x0FF) == 0x020) # define ISLOWER(c) ('a' <= (c) && (c) <= 'z') # define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c)) #else # define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \ || ('j' <= (c) && (c) <= 'r') \ || ('s' <= (c) && (c) <= 'z')) # define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c)) #endif #define XOR(e, f) (((e) && !(f)) || (!(e) && (f))) int main () { int i; for (i = 0; i < 256; i++) if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2); exit (0); }], , ac_cv_header_stdc=no, :) fi]) if test $ac_cv_header_stdc = yes; then AC_DEFINE(STDC_HEADERS, 1, [Define if you have the ANSI C header files.]) fi ])# AC_HEADER_STDC # AC_HEADER_SYS_WAIT # ------------------ AC_DEFUN([AC_HEADER_SYS_WAIT], [AC_CACHE_CHECK([for sys/wait.h that is POSIX.1 compatible], ac_cv_header_sys_wait_h, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([#include #include #ifndef WEXITSTATUS # define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8) #endif #ifndef WIFEXITED # define WIFEXITED(stat_val) (((stat_val) & 255) == 0) #endif ], [ int s; wait (&s); s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;])], [ac_cv_header_sys_wait_h=yes], [ac_cv_header_sys_wait_h=no])]) if test $ac_cv_header_sys_wait_h = yes; then AC_DEFINE(HAVE_SYS_WAIT_H, 1, [Define if you have that is POSIX.1 compatible.]) fi ])# AC_HEADER_SYS_WAIT # AC_HEADER_TIME # -------------- AC_DEFUN([AC_HEADER_TIME], [AC_CACHE_CHECK([whether time.h and sys/time.h may both be included], ac_cv_header_time, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include #include #include ], [struct tm *tp;])], [ac_cv_header_time=yes], [ac_cv_header_time=no])]) if test $ac_cv_header_time = yes; then AC_DEFINE(TIME_WITH_SYS_TIME, 1, [Define if you can safely include both and .]) fi ])# AC_HEADER_TIME # A few obsolete macros. AU_DEFUN([AC_UNISTD_H], [AC_CHECK_HEADERS(unistd.h)]) # AU::AC_USG # ---------- # Define `USG' if string functions are in strings.h. AU_DEFUN([AC_USG], [AC_DIAGNOSE([obsolete], [$0: Remove `AC_MSG_CHECKING', `AC_TRY_LINK' and this `AC_WARNING' when you ajust your code to use HAVE_STRING_H.])dnl AC_MSG_CHECKING([for BSD string and memory functions]) AC_TRY_LINK([@%:@include ], [rindex(0, 0); bzero(0, 0);], [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no) AC_DEFINE(USG, 1, [Define if you do not have , index, bzero, etc... This symbol is obsolete, you should not depend upon it.])]) AC_CHECK_HEADERS(string.h)]) # AU::AC_MEMORY_H # --------------- # To be precise this macro used to be: # # | AC_MSG_CHECKING(whether string.h declares mem functions) # | AC_EGREP_HEADER(memchr, string.h, ac_found=yes, ac_found=no) # | AC_MSG_RESULT($ac_found) # | if test $ac_found = no; then # | AC_CHECK_HEADER(memory.h, [AC_DEFINE(NEED_MEMORY_H)]) # | fi # # But it is better to check for both headers, and alias NEED_MEMORY_H to # HAVE_MEMORY_H. AU_DEFUN([AC_MEMORY_H], [AC_DIAGNOSE([obsolete], [$0: Remove this warning and `AC_CHECK_HEADER(memory.h, AC_DEFINE(...))' when you ajust your code to use and HAVE_STRING_H and HAVE_MEMORY_H, not NEED_MEMORY_H.])dnl AC_CHECK_HEADER(memory.h, [AC_DEFINE([NEED_MEMORY_H], 1, [Same as `HAVE_MEMORY_H', don't depend on me.])]) AC_CHECK_HEADERS(string.h memory.h) ]) # AU::AC_DIR_HEADER # ----------------- # Like calling `AC_HEADER_DIRENT' and `AC_FUNC_CLOSEDIR_VOID', but # defines a different set of C preprocessor macros to indicate which # header file is found. AU_DEFUN([AC_DIR_HEADER], [AC_HEADER_DIRENT AC_FUNC_CLOSEDIR_VOID AC_DIAGNOSE([obsolete], [$0: Remove this warning and the four `AC_DEFINE' when you ajust your code to use `AC_HEADER_DIRENT'.]) test ac_cv_header_dirent_dirent_h && AC_DEFINE([DIRENT], 1, [Same as `HAVE_DIRENT_H', don't depend on me.]) test ac_cv_header_dirent_sys_ndir_h && AC_DEFINE([SYSNDIR], 1, [Same as `HAVE_SYS_NDIR_H', don't depend on me.]) test ac_cv_header_dirent_sys_dir_h && AC_DEFINE([SYSDIR], 1, [Same as `HAVE_SYS_DIR_H', don't depend on me.]) test ac_cv_header_dirent_ndir_h && AC_DEFINE([NDIR], 1, [Same as `HAVE_NDIR_H', don't depend on me.]) ]) ## --------------------- ## ## Checks for typedefs. ## ## --------------------- ## # AC_TYPE_GETGROUPS # ----------------- AC_DEFUN([AC_TYPE_GETGROUPS], [AC_REQUIRE([AC_TYPE_UID_T])dnl AC_CACHE_CHECK(type of array argument to getgroups, ac_cv_type_getgroups, [AC_TRY_RUN( [/* Thanks to Mike Rendell for this test. */ #include #define NGID 256 #undef MAX #define MAX(x, y) ((x) > (y) ? (x) : (y)) int main () { gid_t gidset[NGID]; int i, n; union { gid_t gval; long lval; } val; val.lval = -1; for (i = 0; i < NGID; i++) gidset[i] = val.gval; n = getgroups (sizeof (gidset) / MAX (sizeof (int), sizeof (gid_t)) - 1, gidset); /* Exit non-zero if getgroups seems to require an array of ints. This happens when gid_t is short but getgroups modifies an array of ints. */ exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0); }], ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int, ac_cv_type_getgroups=cross) if test $ac_cv_type_getgroups = cross; then dnl When we can't run the test program (we are cross compiling), presume dnl that has either an accurate prototype for getgroups or none. dnl Old systems without prototypes probably use int. AC_EGREP_HEADER([getgroups.*int.*gid_t], unistd.h, ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int) fi]) AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups, [Define to the type of elements in the array set by `getgroups'. Usually this is either `int' or `gid_t'.]) ])# AC_TYPE_GETGROUPS # AU::AM_TYPE_PTRDIFF_T AU_DEFUN([AM_TYPE_PTRDIFF_T], [AC_CHECK_TYPES(ptrdiff_t)]) # AC_TYPE_UID_T # ------------- # FIXME: Rewrite using AC_CHECK_TYPE. AC_DEFUN([AC_TYPE_UID_T], [AC_CACHE_CHECK(for uid_t in sys/types.h, ac_cv_type_uid_t, [AC_EGREP_HEADER(uid_t, sys/types.h, ac_cv_type_uid_t=yes, ac_cv_type_uid_t=no)]) if test $ac_cv_type_uid_t = no; then AC_DEFINE(uid_t, int, [Define to `int' if doesn't define.]) AC_DEFINE(gid_t, int, [Define to `int' if doesn't define.]) fi ]) AC_DEFUN([AC_TYPE_SIZE_T], [AC_CHECK_TYPE(size_t, unsigned)]) AC_DEFUN([AC_TYPE_PID_T], [AC_CHECK_TYPE(pid_t, int)]) AC_DEFUN([AC_TYPE_OFF_T], [AC_CHECK_TYPE(off_t, long)]) AC_DEFUN([AC_TYPE_MODE_T], [AC_CHECK_TYPE(mode_t, int)]) # AU::AC_INT_16_BITS # ------------------ # What a great name :) AU_DEFUN([AC_INT_16_BITS], [AC_CHECK_SIZEOF([int]) AC_DIAGNOSE([obsolete], [$0: your code should no longer depend upon `INT_16_BITS', but upon `SIZEOF_INT'. Remove this warning and the `AC_DEFINE' when you adjust the code.])dnl test $ac_cv_sizeof_int = 2 && AC_DEFINE(INT_16_BITS, 1, [Define if `sizeof (int)' = 2. Obsolete, use `SIZEOF_INT'.]) ]) # AU::AC_LONG_64_BITS # ------------------- AU_DEFUN([AC_LONG_64_BITS], [AC_CHECK_SIZEOF([long int]) AC_DIAGNOSE([obsolete], [$0: your code should no longer depend upon `LONG_64_BITS', but upon `SIZEOF_LONG_INT'. Remove this warning and the `AC_DEFINE' when you adjust the code.])dnl test $ac_cv_sizeof_long_int = 8 && AC_DEFINE(LONG_64_BITS, 1, [Define if `sizeof (long int)' = 8. Obsolete, use `SIZEOF_LONG_INT'.]) ]) # AC_TYPE_SIGNAL # -------------- # Note that identifiers starting with SIG are reserved by ANSI C. AC_DEFUN([AC_TYPE_SIGNAL], [AC_CACHE_CHECK([return type of signal handlers], ac_cv_type_signal, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([#include #include #ifdef signal # undef signal #endif #ifdef __cplusplus extern "C" void (*signal (int, void (*)(int)))(int); #else void (*signal ()) (); #endif ], [int i;])], [ac_cv_type_signal=void], [ac_cv_type_signal=int])]) AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal, [Define as the return type of signal handlers (`int' or `void').]) ]) ## ------------------------------ ## ## Checks for structure members. ## ## ------------------------------ ## # AC_STRUCT_TM # ------------ # FIXME: This macro is badly named, it should be AC_CHECK_TYPE_STRUCT_TM. # Or something else, but what? AC_CHECK_TYPE_STRUCT_TM_IN_SYS_TIME? AC_DEFUN([AC_STRUCT_TM], [AC_CACHE_CHECK([whether struct tm is in sys/time.h or time.h], ac_cv_struct_tm, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include #include ], [struct tm *tp; tp->tm_sec;])], [ac_cv_struct_tm=time.h], [ac_cv_struct_tm=sys/time.h])]) if test $ac_cv_struct_tm = sys/time.h; then AC_DEFINE(TM_IN_SYS_TIME, 1, [Define if your declares `struct tm'.]) fi ])# AC_STRUCT_TM # AC_STRUCT_TIMEZONE # ------------------ # Figure out how to get the current timezone. If `struct tm' has a # `tm_zone' member, define `HAVE_TM_ZONE'. Otherwise, if the # external array `tzname' is found, define `HAVE_TZNAME'. AC_DEFUN([AC_STRUCT_TIMEZONE], [AC_REQUIRE([AC_STRUCT_TM])dnl AC_CHECK_MEMBERS([struct tm.tm_zone],,,[#include #include <$ac_cv_struct_tm> ]) if test "$ac_cv_member_struct_tm_tm_zone" = yes; then AC_DEFINE(HAVE_TM_ZONE, 1, [Define if your `struct tm' has `tm_zone'. Deprecated, use `HAVE_STRUCT_TM_TM_ZONE' instead.]) else AC_CACHE_CHECK(for tzname, ac_cv_var_tzname, [AC_TRY_LINK( [#include #ifndef tzname /* For SGI. */ extern char *tzname[]; /* RS6000 and others reject char **tzname. */ #endif ], [atoi(*tzname);], ac_cv_var_tzname=yes, ac_cv_var_tzname=no)]) if test $ac_cv_var_tzname = yes; then AC_DEFINE(HAVE_TZNAME, 1, [Define if you don't have `tm_zone' but do have the external array `tzname'.]) fi fi ])# AC_STRUCT_TIMEZONE # FIXME: The following three macros should no longer be supported in the # future. They made sense when there was no means to directly check for # members of aggregates. # AC_STRUCT_ST_BLKSIZE # -------------------- AU_DEFUN([AC_STRUCT_ST_BLKSIZE], [AC_DIAGNOSE([obsolete], [$0: your code should no longer depend upon `HAVE_ST_BLKSIZE', but `HAVE_STRUCT_STAT_ST_BLKSIZE'. Remove this warning and the `AC_DEFINE' when you adjust the code.]) AC_CHECK_MEMBERS([struct stat.st_blksize], [AC_DEFINE(HAVE_ST_BLKSIZE, 1, [Define if your `struct stat' has `st_blksize'. Deprecated, use `HAVE_STRUCT_STAT_ST_BLKSIZE' instead.])],, [#include #include ])dnl ])# AC_STRUCT_ST_BLKSIZE # AC_STRUCT_ST_BLOCKS # ------------------- # If `struct stat' contains an `st_blocks' member, define # HAVE_STRUCT_STAT_ST_BLOCKS. Otherwise, add `fileblocks.o' to the # output variable LIBOBJS. We still define HAVE_ST_BLOCKS for backward # compatibility. In the future, we will activate specializations for # this macro, so don't obsolete it right now. # # AC_OBSOLETE([$0], [; replace it with # AC_CHECK_MEMBERS([struct stat.st_blocks], # [AC_LIBOBJ([fileblocks])]) # Please note that it will define `HAVE_STRUCT_STAT_ST_BLOCKS', # and not `HAVE_ST_BLOCKS'.])dnl # AC_DEFUN([AC_STRUCT_ST_BLOCKS], [AC_CHECK_MEMBERS([struct stat.st_blocks], [AC_DEFINE(HAVE_ST_BLOCKS, 1, [Define if your `struct stat' has `st_blocks'. Deprecated, use `HAVE_STRUCT_STAT_ST_BLOCKS' instead.])], [AC_LIBOBJ([fileblocks])], [#include #include ])dnl ])# AC_STRUCT_ST_BLOCKS # AC_STRUCT_ST_RDEV # ----------------- AU_DEFUN([AC_STRUCT_ST_RDEV], [AC_DIAGNOSE([obsolete], [$0: your code should no longer depend upon `HAVE_ST_RDEV', but `HAVE_STRUCT_STAT_ST_RDEV'. Remove this warning and the `AC_DEFINE' when you adjust the code.]) AC_CHECK_MEMBERS([struct stat.st_rdev], [AC_DEFINE(HAVE_ST_RDEV, 1, [Define if your `struct stat' has `st_rdev'. Deprecated, use `HAVE_STRUCT_STAT_ST_RDEV' instead.])],, [#include #include ])dnl ])# AC_STRUCT_ST_RDEV ## -------------------------------------- ## ## Checks for operating system services. ## ## -------------------------------------- ## # AC_SYS_INTERPRETER # ------------------ AC_DEFUN([AC_SYS_INTERPRETER], [AC_CACHE_CHECK(whether @%:@! works in shell scripts, ac_cv_sys_interpreter, [echo '#! /bin/cat exit 69 ' >conftest chmod u+x conftest (SHELL=/bin/sh; export SHELL; ./conftest >/dev/null) if test $? -ne 69; then ac_cv_sys_interpreter=yes else ac_cv_sys_interpreter=no fi rm -f conftest]) interpval=$ac_cv_sys_interpreter ]) AU_DEFUN([AC_HAVE_POUNDBANG], [AC_SYS_INTERPRETER AC_DIAGNOSE([obsolete], [$0: Remove this warning when you adjust your code to use `AC_SYS_INTERPRETER'.])]) AU_DEFUN([AC_ARG_ARRAY], [AC_DIAGNOSE([obsolete], [$0: no longer implemented: don't do unportable things with arguments. Remove this warning when you adjust your code.])]) # _AC_SYS_LARGEFILE_SOURCE(PROLOGUE, BODY) # ---------------------------------------- define([_AC_SYS_LARGEFILE_SOURCE], [AC_LANG_PROGRAM( [$1 @%:@include int a[[(off_t) 9223372036854775807 == 9223372036854775807 ? 1 : -1]];], [$2])]) # _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, # CACHE-VAR, # DESCRIPTION, # [INCLUDES], [FUNCTION-BODY]) # ---------------------------------------------------------- define([_AC_SYS_LARGEFILE_MACRO_VALUE], [AC_CACHE_CHECK([for $1 value needed for large files], [$3], [while :; do $3=no AC_COMPILE_IFELSE([_AC_SYS_LARGEFILE_SOURCE([$5], [$6])], [break]) AC_COMPILE_IFELSE([_AC_SYS_LARGEFILE_SOURCE([@%:@define $1 $2 $5], [$6])], [$3=$2; break]) break done]) if test "$$3" != no; then AC_DEFINE_UNQUOTED([$1], [$$3], [$4]) fi[]dnl ])# _AC_SYS_LARGEFILE_MACRO_VALUE # AC_SYS_LARGEFILE # ---------------- # By default, many hosts won't let programs access large files; # one must use special compiler options to get large-file access to work. # For more details about this brain damage please see: # http://www.sas.com/standards/large.file/x_open.20Mar96.html AC_DEFUN([AC_SYS_LARGEFILE], [AC_ARG_ENABLE(largefile, [ --disable-largefile omit support for large files]) if test "$enable_largefile" != no; then AC_CACHE_CHECK([for special C compiler options needed for large files], ac_cv_sys_largefile_CC, [ac_cv_sys_largefile_CC=no if test "$GCC" != yes; then ac_save_CC=${CC-cc} while :; do # IRIX 6.2 and later do not support large files by default, # so use the C compiler's -n32 option if that helps. AC_COMPILE_IFELSE([_AC_SYS_LARGEFILE_SOURCE()], [break]) CC="$CC -n32" AC_COMPILE_IFELSE([_AC_SYS_LARGEFILE_SOURCE()], [ac_cv_sys_largefile_CC=' -n32'; break]) break done CC=$ac_save_CC fi]) if test "$ac_cv_sys_largefile_CC" != no; then CC=$CC$ac_cv_sys_largefile_CC fi _AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, ac_cv_sys_file_offset_bits, [Number of bits in a file offset, on hosts where this is settable.]) _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1, ac_cv_sys_largefile_source, [Define to make ftello visible on some hosts (e.g. HP-UX 10.20).], [@%:@include ], [return !ftello;]) _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, ac_cv_sys_large_files, [Define for large files, on AIX-style hosts.]) _AC_SYS_LARGEFILE_MACRO_VALUE(_XOPEN_SOURCE, 500, ac_cv_sys_xopen_source, [Define to make ftello visible on some hosts (e.g. glibc 2.1.3).], [@%:@include ], [return !ftello;]) fi ])# AC_SYS_LARGEFILE # AC_SYS_LONG_FILE_NAMES # ---------------------- # Security: use a temporary directory as the most portable way of # creating files in /tmp securely. Removing them leaves a race # condition, set -C is not portably guaranteed to use O_EXCL, so still # leaves a race, and not all systems have the `mktemp' utility. We # still test for existence first in case of broken systems where the # mkdir succeeds even when the directory exists. Broken systems may # retain a race, but they probably have other security problems # anyway; this should be secure on well-behaved systems. In any case, # use of `mktemp' is probably inappropriate here since it would fail in # attempting to create different file names differing after the 14th # character on file systems without long file names. AC_DEFUN([AC_SYS_LONG_FILE_NAMES], [AC_CACHE_CHECK(for long file names, ac_cv_sys_long_file_names, [ac_cv_sys_long_file_names=yes # Test for long file names in all the places we know might matter: # . the current directory, where building will happen # $prefix/lib where we will be installing things # $exec_prefix/lib likewise # eval it to expand exec_prefix. # $TMPDIR if set, where it might want to write temporary files # if $TMPDIR is not set: # /tmp where it might want to write temporary files # /var/tmp likewise # /usr/tmp likewise if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then ac_tmpdirs=$TMPDIR else ac_tmpdirs='/tmp /var/tmp /usr/tmp' fi for ac_dir in . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do test -d $ac_dir || continue test -w $ac_dir || continue # It is less confusing to not echo anything here. ac_xdir=$ac_dir/cf$$ (umask 077 && mkdir $ac_xdir 2>/dev/null) || continue ac_tf1=$ac_xdir/conftest9012345 ac_tf2=$ac_xdir/conftest9012346 (echo 1 >$ac_tf1) 2>/dev/null (echo 2 >$ac_tf2) 2>/dev/null ac_val=`cat $ac_tf1 2>/dev/null` if test ! -f $ac_tf1 || test "$ac_val" != 1; then ac_cv_sys_long_file_names=no rm -rf $ac_xdir 2>/dev/null break fi rm -rf $ac_xdir 2>/dev/null done]) if test $ac_cv_sys_long_file_names = yes; then AC_DEFINE(HAVE_LONG_FILE_NAMES, 1, [Define if you support file names longer than 14 characters.]) fi ]) # AC_SYS_RESTARTABLE_SYSCALLS # --------------------------- # If the system automatically restarts a system call that is # interrupted by a signal, define `HAVE_RESTARTABLE_SYSCALLS'. AC_DEFUN([AC_SYS_RESTARTABLE_SYSCALLS], [AC_REQUIRE([AC_HEADER_SYS_WAIT])dnl AC_CHECK_HEADERS(unistd.h) AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls, [AC_TRY_RUN( [/* Exit 0 (true) if wait returns something other than -1, i.e. the pid of the child, which means that wait was restarted after getting the signal. */ #include #include #if HAVE_UNISTD_H # include #endif #if HAVE_SYS_WAIT_H # include #endif /* Some platforms explicitly require an extern "C" signal handler when using C++. */ #ifdef __cplusplus extern "C" void ucatch (int dummy) { } #else void ucatch (dummy) int dummy; { } #endif int main () { int i = fork (), status; if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); } signal (SIGINT, ucatch); status = wait (&i); if (status == -1) wait (&i); exit (status == -1); }], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)]) if test $ac_cv_sys_restartable_syscalls = yes; then AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS, 1, [Define if system calls automatically restart after interruption by a signal.]) fi ])# AC_SYS_RESTARTABLE_SYSCALLS ## --------------------- ## ## Checks for X window. ## ## --------------------- ## # AC_PATH_X # --------- # If we find X, set shell vars x_includes and x_libraries to the # paths, otherwise set no_x=yes. # Uses ac_ vars as temps to allow command line to override cache and checks. # --without-x overrides everything else, but does not touch the cache. AC_DEFUN([AC_PATH_X], [AC_REQUIRE_CPP()dnl Set CPP; we run _AC_PATH_X_DIRECT conditionally. dnl Document the X abnormal options inherited from history. AC_DIVERT_ONCE([HELP_BEGIN], [ X features: --x-includes=DIR X include files are in DIR --x-libraries=DIR X library files are in DIR])dnl AC_MSG_CHECKING(for X) AC_ARG_WITH(x, [ --with-x use the X Window System]) # $have_x is `yes', `no', `disabled', or empty when we do not yet know. if test "x$with_x" = xno; then # The user explicitly disabled X. have_x=disabled else if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then # Both variables are already set. have_x=yes else AC_CACHE_VAL(ac_cv_have_x, [# One or both of the vars are not set, and there is no cached value. ac_x_includes=no ac_x_libraries=no _AC_PATH_X_XMKMF _AC_PATH_X_DIRECT if test "$ac_x_includes" = no || test "$ac_x_libraries" = no; then # Didn't find X anywhere. Cache the known absence of X. ac_cv_have_x="have_x=no" else # Record where we found X for the cache. ac_cv_have_x="have_x=yes \ ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries" fi])dnl fi eval "$ac_cv_have_x" fi # $with_x != no if test "$have_x" != yes; then AC_MSG_RESULT($have_x) no_x=yes else # If each of the values was on the command line, it overrides each guess. test "x$x_includes" = xNONE && x_includes=$ac_x_includes test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries # Update the cache value to reflect the command line values. ac_cv_have_x="have_x=yes \ ac_x_includes=$x_includes ac_x_libraries=$x_libraries" AC_MSG_RESULT([libraries $x_libraries, headers $x_includes]) fi ])# AC_PATH_X # _AC_PATH_X_XMKMF # --------------- # Internal subroutine of AC_PATH_X. # Set ac_x_includes and/or ac_x_libraries. define([_AC_PATH_X_XMKMF], [rm -fr conftestdir if mkdir conftestdir; then cd conftestdir # Make sure to not put "make" in the Imakefile rules, since we grep it out. cat >Imakefile <<'EOF' acfindx: @echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"' EOF if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then # GNU make sometimes prints "make[1]: Entering...", which would confuse us. eval `${MAKE-make} acfindx 2>/dev/null | grep -v make` # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR. for ac_extension in a so sl; do if test ! -f $ac_im_usrlibdir/libX11.$ac_extension && test -f $ac_im_libdir/libX11.$ac_extension; then ac_im_usrlibdir=$ac_im_libdir; break fi done # Screen out bogus values from the imake configuration. They are # bogus both because they are the default anyway, and because # using them would break gcc on systems where it needs fixed includes. case $ac_im_incroot in /usr/include) ;; *) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;; esac case $ac_im_usrlibdir in /usr/lib | /lib) ;; *) test -d "$ac_im_usrlibdir" && ac_x_libraries=$ac_im_usrlibdir ;; esac fi cd .. rm -fr conftestdir fi ])# _AC_PATH_X_XMKMF # _AC_PATH_X_DIRECT # ---------------- # Internal subroutine of AC_PATH_X. # Set ac_x_includes and/or ac_x_libraries. define([_AC_PATH_X_DIRECT], [# Standard set of common directories for X headers. # Check X11 before X11Rn because it is often a symlink to the current release. ac_x_header_dirs=' /usr/X11/include /usr/X11R6/include /usr/X11R5/include /usr/X11R4/include /usr/include/X11 /usr/include/X11R6 /usr/include/X11R5 /usr/include/X11R4 /usr/local/X11/include /usr/local/X11R6/include /usr/local/X11R5/include /usr/local/X11R4/include /usr/local/include/X11 /usr/local/include/X11R6 /usr/local/include/X11R5 /usr/local/include/X11R4 /usr/X386/include /usr/x386/include /usr/XFree86/include/X11 /usr/include /usr/local/include /usr/unsupported/include /usr/athena/include /usr/local/x11r5/include /usr/lpp/Xamples/include /usr/openwin/include /usr/openwin/share/include' if test "$ac_x_includes" = no; then # Guess where to find include files, by looking for Intrinsic.h. # First, try using that file with no special directory specified. AC_TRY_CPP([@%:@include ], [# We can compile using X headers with no special include directory. ac_x_includes=], [for ac_dir in $ac_x_header_dirs; do if test -r "$ac_dir/X11/Intrinsic.h"; then ac_x_includes=$ac_dir break fi done]) fi # $ac_x_includes = no if test "$ac_x_libraries" = no; then # Check for the libraries. # See if we find them without any special options. # Don't add to $LIBS permanently. ac_save_LIBS=$LIBS LIBS="-lXt $LIBS" AC_TRY_LINK([@%:@include ], [XtMalloc (0)], [LIBS=$ac_save_LIBS # We can link X programs with no special library path. ac_x_libraries=], [LIBS=$ac_save_LIBS for ac_dir in `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/g` do # Don't even attempt the hair of trying to link an X program! for ac_extension in a so sl; do if test -r $ac_dir/libXt.$ac_extension; then ac_x_libraries=$ac_dir break 2 fi done done]) fi # $ac_x_libraries = no ])# _AC_PATH_X_DIRECT # AC_PATH_XTRA # ------------ # Find additional X libraries, magic flags, etc. AC_DEFUN([AC_PATH_XTRA], [AC_REQUIRE([AC_PATH_X])dnl if test "$no_x" = yes; then # Not all programs may use this symbol, but it does not hurt to define it. AC_DEFINE(X_DISPLAY_MISSING, 1, [Define if the X Window System is missing or not being used.]) X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS= else if test -n "$x_includes"; then X_CFLAGS="$X_CFLAGS -I$x_includes" fi # It would also be nice to do this for all -L options, not just this one. if test -n "$x_libraries"; then X_LIBS="$X_LIBS -L$x_libraries" dnl FIXME: banish uname from this macro! # For Solaris; some versions of Sun CC require a space after -R and # others require no space. Words are not sufficient . . . . case `(uname -sr) 2>/dev/null` in "SunOS 5"*) AC_MSG_CHECKING(whether -R must be followed by a space) ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries" AC_LINK_IFELSE([], ac_R_nospace=yes, ac_R_nospace=no) if test $ac_R_nospace = yes; then AC_MSG_RESULT(no) X_LIBS="$X_LIBS -R$x_libraries" else LIBS="$ac_xsave_LIBS -R $x_libraries" AC_LINK_IFELSE([], ac_R_space=yes, ac_R_space=no) if test $ac_R_space = yes; then AC_MSG_RESULT(yes) X_LIBS="$X_LIBS -R $x_libraries" else AC_MSG_RESULT(neither works) fi fi LIBS=$ac_xsave_LIBS esac fi # Check for system-dependent libraries X programs must link with. # Do this before checking for the system-independent R6 libraries # (-lICE), since we may need -lsocket or whatever for X linking. if test "$ISC" = yes; then X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet" else # Martyn Johnson says this is needed for Ultrix, if the X # libraries were built with DECnet support. And Karl Berry says # the Alpha needs dnet_stub (dnet does not exist). AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"]) if test $ac_cv_lib_dnet_dnet_ntoa = no; then AC_CHECK_LIB(dnet_stub, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"]) fi # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT, # to get the SysV transport functions. # Chad R. Larson says the Pyramis MIS-ES running DC/OSx (SVR4) # needs -lnsl. # The nsl library prevents programs from opening the X display # on Irix 5.2, according to T.E. Dickey. # The functions gethostbyname, getservbyname, and inet_addr are # in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking. AC_CHECK_FUNC(gethostbyname) if test $ac_cv_func_gethostbyname = no; then AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl") if test $ac_cv_lib_nsl_gethostbyname = no; then AC_CHECK_LIB(bsd, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd") fi fi # lieder@skyler.mavd.honeywell.com says without -lsocket, # socket/setsockopt and other routines are undefined under SCO ODT # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary # on later versions), says Simon Leinen: it contains gethostby* # variants that don't use the nameserver (or something). -lsocket # must be given before -lnsl if both are needed. We assume that # if connect needs -lnsl, so does gethostbyname. AC_CHECK_FUNC(connect) if test $ac_cv_func_connect = no; then AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", , $X_EXTRA_LIBS) fi # Guillermo Gomez says -lposix is necessary on A/UX. AC_CHECK_FUNC(remove) if test $ac_cv_func_remove = no; then AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix") fi # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay. AC_CHECK_FUNC(shmat) if test $ac_cv_func_shmat = no; then AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc") fi fi # Check for libraries that X11R6 Xt/Xaw programs need. ac_save_LDFLAGS=$LDFLAGS test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries" # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to # check for ICE first), but we must link in the order -lSM -lICE or # we get undefined symbols. So assume we have SM if we have ICE. # These have to be linked with before -lX11, unlike the other # libraries we check for below, so use a different variable. # John Interrante, Karl Berry AC_CHECK_LIB(ICE, IceConnectionNumber, [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS) LDFLAGS=$ac_save_LDFLAGS fi AC_SUBST(X_CFLAGS)dnl AC_SUBST(X_PRE_LIBS)dnl AC_SUBST(X_LIBS)dnl AC_SUBST(X_EXTRA_LIBS)dnl ])# AC_PATH_XTRA ## ------------------------------------ ## ## Checks for not-quite-Unix variants. ## ## ------------------------------------ ## # _AC_CYGWIN # ---------- # Check for Cygwin. This is a way to set the right value for # EXEEXT. define([_AC_CYGWIN], [AC_CACHE_CHECK(for Cygwin environment, ac_cv_cygwin, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [#ifndef __CYGWIN__ # define __CYGWIN__ __CYGWIN32__ #endif return __CYGWIN__;])], [ac_cv_cygwin=yes], [ac_cv_cygwin=no])]) test "$ac_cv_cygwin" = yes && CYGWIN=yes[]dnl ])# _AC_CYGWIN # _AC_EMXOS2 # ---------- # Check for EMX on OS/2. This is another way to set the right value # for EXEEXT. define([_AC_EMXOS2], [AC_CACHE_CHECK(for EMX OS/2 environment, ac_cv_emxos2, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [return __EMX__;])], [ac_cv_emxos2=yes], [ac_cv_emxos2=no])]) test "$ac_cv_emxos2" = yes && EMXOS2=yes[]dnl ])# _AC_EMXOS2 # _AC_MINGW32 # ----------- # Check for mingw32. This is another way to set the right value for # EXEEXT. define([_AC_MINGW32], [AC_CACHE_CHECK(for mingw32 environment, ac_cv_mingw32, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [return __MINGW32__;])], [ac_cv_mingw32=yes], [ac_cv_mingw32=no])]) test "$ac_cv_mingw32" = yes && MINGW32=yes[]dnl ])# _AC_MINGW32 # The user is no longer supposed to call these macros. AU_DEFUN([AC_CYGWIN], []) AU_DEFUN([AC_CYGWIN32], []) AU_DEFUN([AC_EMXOS2], []) AU_DEFUN([AC_MINGW32], []) # We must not AU define them, because autoupdate would them remove # them, which is right, but Automake 1.4 would remove the support for # $(EXEEXT) etc. # FIXME: Remove this once Automake fixed. AC_DEFUN([AC_EXEEXT], []) AC_DEFUN([AC_OBJEXT], []) # _AC_EXEEXT # -_-------- # Check for the extension used for executables. This knows that we # add .exe for Cygwin or mingw32. Otherwise, it compiles a test # executable. If this is called, the executable extensions will be # automatically used by link commands run by the configure script. define([_AC_EXEEXT], [_AC_CYGWIN _AC_MINGW32 _AC_EMXOS2 AC_CACHE_CHECK([for executable suffix], ac_cv_exeext, [if test "$CYGWIN" = yes || test "$MINGW32" = yes || test "$EMXOS2" = yes; then ac_cv_exeext=.exe else AC_LINK_IFELSE([AC_LANG_PROGRAM()], [for ac_file in conftest.*; do case $ac_file in *.$ac_ext | *.o | *.obj | *.xcoff) ;; *) ac_cv_exeext=`echo $ac_file | sed s/conftest//` ;; esac done], [AC_MSG_ERROR([cannot compile and link])]) test -n "$ac_cv_exeext" && ac_cv_exeext=no fi]) EXEEXT= test "$ac_cv_exeext" != no && EXEEXT=$ac_cv_exeext dnl Setting ac_exeext will implicitly change the ac_link command. ac_exeext=$EXEEXT AC_SUBST(EXEEXT)dnl ])# _AC_EXEEXT # _AC_OBJEXT # ---------- # Check the object extension used by the compiler: typically .o or # .obj. 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