Mercurial > gnulib
view m4/utime_h.m4 @ 40189:3ba41edecde6
progreloc: Speed up executable lookup on various platforms.
* lib/progreloc.c: Include <errno.h>.
(safe_read, full_read): New functions.
(find_executable): On GNU/kFreeBSD, FreeBSD, DragonFly, NetBSD, Solaris,
prefer the information from the /proc file system to a PATH search.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Tue, 19 Feb 2019 21:42:54 +0100 |
parents | b06060465f09 |
children |
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# utime_h.m4 serial 3 dnl Copyright (C) 2017-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Bruno Haible. AC_DEFUN([gl_UTIME_H], [ AC_REQUIRE([AC_CANONICAL_HOST]) AC_REQUIRE([gl_UTIME_H_DEFAULTS]) m4_ifdef([gl_ANSI_CXX], [AC_REQUIRE([gl_ANSI_CXX])]) AC_CHECK_HEADERS_ONCE([utime.h]) gl_CHECK_NEXT_HEADERS([utime.h]) if test $ac_cv_header_utime_h = yes; then HAVE_UTIME_H=1 else HAVE_UTIME_H=0 fi AC_SUBST([HAVE_UTIME_H]) m4_ifdef([gl_POSIXCHECK], [UTIME_H=utime.h], [UTIME_H='' if m4_ifdef([gl_ANSI_CXX], [test "$CXX" != no], [false]); then dnl Override <utime.h> always, to support the C++ GNULIB_NAMESPACE. UTIME_H=utime.h else if test $ac_cv_header_utime_h != yes; then dnl Provide a substitute <utime.h> file. UTIME_H=utime.h else case "$host_os" in mingw*) dnl Need special handling of 'struct utimbuf'. UTIME_H=utime.h ;; esac fi fi ]) AC_SUBST([UTIME_H]) AM_CONDITIONAL([GL_GENERATE_UTIME_H], [test -n "$UTIME_H"]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use. gl_WARN_ON_USE_PREPARE([[#include <utime.h> ]], [utime]) ]) AC_DEFUN([gl_UTIME_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_UTIME_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_UTIME_H_DEFAULTS], [ GNULIB_UTIME=0; AC_SUBST([GNULIB_UTIME]) dnl Assume POSIX behavior unless another module says otherwise. HAVE_UTIME=1; AC_SUBST([HAVE_UTIME]) REPLACE_UTIME=0; AC_SUBST([REPLACE_UTIME]) ])