105 lines
2.9 KiB
Plaintext
105 lines
2.9 KiB
Plaintext
dnl Check:
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dnl * If we have gettimeofday;
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dnl * If we have struct timezone for use in calling it;
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dnl * If calling it with a timezone pointer actually works -- this is deemed
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dnl obsolete or undefined on some systems which say you should use a null
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dnl pointer -- and undefine HAVE_TIMEZONE if so;
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dnl * Whether it only takes one arg.
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AC_DEFUN([LIBGFOR_GETTIMEOFDAY], [
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AC_CHECK_FUNCS(gettimeofday)
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if test "$ac_cv_func_gettimeofday" = yes; then
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AC_CACHE_CHECK([for struct timezone], gfor_cv_struct_timezone,
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[AC_TRY_COMPILE([#include <sys/time.h>],
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[struct timezone tz;],
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gfor_cv_struct_timezone=yes, gfor_cv_struct_timezone=no)])
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if test $gfor_cv_struct_timezone = yes; then
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dnl It may be that we can't call gettimeofday with a non-null pointer.
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dnl In that case we'll lie about struct timezone.
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AC_TRY_RUN([
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#endif
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main ()
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{
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struct timeval time;
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struct timezone dummy;
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if (gettimeofday (&time, &dummy))
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exit (1);
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else
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exit (0);
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}],
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[gfor_have_struct_timezone=yes], [gfor_have_struct_timezone=no],
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[gfor_have_struct_timezone=yes])
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if test $gfor_have_struct_timezone = yes; then
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AC_DEFINE(HAVE_TIMEZONE, 1, [Do we have struct timezone])
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fi
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fi
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AC_REQUIRE([AC_HEADER_TIME])
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AC_CACHE_CHECK([whether gettimeofday can accept two arguments],
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emacs_cv_gettimeofday_two_arguments,
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[AC_TRY_LINK([
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#endif
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],
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[
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struct timeval time;
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#ifdef HAVE_TIMEZONE
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struct timezone dummy;
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#define DUMMY &dummy
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#else
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#define DUMMY NULL
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#endif
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gettimeofday (&time, DUMMY);],
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emacs_cv_gettimeofday_two_arguments=yes,
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emacs_cv_gettimeofday_two_arguments=no)])
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if test $emacs_cv_gettimeofday_two_arguments = no; then
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AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT, 1,
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[Does gettimeofday take a single argument])
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fi
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fi])
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sinclude(../libtool.m4)
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dnl The lines below arrange for aclocal not to bring an installed
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dnl libtool.m4 into aclocal.m4, while still arranging for automake to
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dnl add a definition of LIBTOOL to Makefile.in.
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ifelse(,,,[AC_SUBST(LIBTOOL)
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AC_DEFUN([AM_PROG_LIBTOOL])
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AC_DEFUN([AC_LIBTOOL_DLOPEN])
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AC_DEFUN([AC_PROG_LD])
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])
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dnl Check whether the target is ILP32.
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AC_DEFUN([LIBGFOR_TARGET_ILP32], [
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AC_CACHE_CHECK([whether the target is ILP32], target_ilp32, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="-O2"
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AC_TRY_LINK(,[
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if (sizeof(int) == 4 && sizeof(long) == 4 && sizeof(void *) == 4)
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;
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else
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undefined_function ();
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],
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target_ilp32=yes,
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target_ilp32=no)
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CFLAGS="$save_CFLAGS"])
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if test $target_ilp32 = yes; then
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AC_DEFINE(TARGET_ILP32, 1,
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[Define to 1 if the target is ILP32.])
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fi
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])
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