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53 lines
1.9 KiB
Plaintext
53 lines
1.9 KiB
Plaintext
dnl Copyright (C) 2003-2021 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 serial 11
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AC_DEFUN([gl_UTIMENS],
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[
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dnl Prerequisites of lib/utimens.c.
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AC_REQUIRE([gl_FUNC_UTIMES])
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AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CHECK_FUNCS_ONCE([futimes futimesat futimens utimensat lutimes])
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if test $ac_cv_func_futimens = no && test $ac_cv_func_futimesat = yes; then
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dnl FreeBSD 8.0-rc2 mishandles futimesat(fd,NULL,time). It is not
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dnl standardized, but Solaris implemented it first and uses it as
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dnl its only means to set fd time.
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AC_CACHE_CHECK([whether futimesat handles NULL file],
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[gl_cv_func_futimesat_works],
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[touch conftest.file
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AC_RUN_IFELSE([AC_LANG_PROGRAM([[
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#include <stddef.h>
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#include <sys/times.h>
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#include <fcntl.h>
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]GL_MDA_DEFINES],
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[[int fd = open ("conftest.file", O_RDWR);
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if (fd < 0) return 1;
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if (futimesat (fd, NULL, NULL)) return 2;
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]])],
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[gl_cv_func_futimesat_works=yes],
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[gl_cv_func_futimesat_works=no],
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[case "$host_os" in
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# Guess yes on Linux systems.
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linux-* | linux) gl_cv_func_futimesat_works="guessing yes" ;;
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# Guess yes on glibc systems.
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*-gnu*) gl_cv_func_futimesat_works="guessing yes" ;;
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# If we don't know, obey --enable-cross-guesses.
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*) gl_cv_func_futimesat_works="$gl_cross_guess_normal" ;;
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esac
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])
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rm -f conftest.file])
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case "$gl_cv_func_futimesat_works" in
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*yes) ;;
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*)
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AC_DEFINE([FUTIMESAT_NULL_BUG], [1],
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[Define to 1 if futimesat mishandles a NULL file name.])
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;;
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esac
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fi
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])
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