52 lines
1.6 KiB
Text
52 lines
1.6 KiB
Text
# time.m4
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# serial 6
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dnl Copyright (C) 2023-2025 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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dnl From Bruno Haible.
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AC_DEFUN([gl_FUNC_TIME],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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dnl glibc has the bug https://sourceware.org/bugzilla/show_bug.cgi?id=30200 .
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AC_CACHE_CHECK([whether time() works],
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[gl_cv_func_time_works],
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[dnl Guess that it works except on
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dnl - glibc >= 2.31 with Linux. And binaries produced on glibc < 2.31
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dnl need to run fine on newer glibc versions as well; therefore ignore
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dnl __GLIBC_MINOR__.
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dnl - FreeBSD, on machines with 2 or more CPUs,
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dnl - AIX,
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dnl - native Windows.
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case "$host_os" in
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linux*-gnu*)
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AC_EGREP_CPP([Unlucky], [
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#include <features.h>
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#ifdef __GNU_LIBRARY__
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#if __GLIBC__ == 2
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Unlucky GNU user
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#endif
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#endif
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],
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[gl_cv_func_time_works="guessing no"],
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[gl_cv_func_time_works="guessing yes"])
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;;
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freebsd*) gl_cv_func_time_works="guessing no";;
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aix*) gl_cv_func_time_works="guessing no";;
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mingw* | windows*) gl_cv_func_time_works="guessing no";;
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*) gl_cv_func_time_works="guessing yes";;
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esac
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])
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case "$gl_cv_func_time_works" in
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*no) REPLACE_TIME=1 ;;
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esac
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])
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# Prerequisites of lib/time.c.
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AC_DEFUN([gl_PREREQ_TIME],
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[
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:
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])
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