Mercurial > gnulib
view m4/fchdir.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
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# fchdir.m4 serial 24 dnl Copyright (C) 2006-2019 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. AC_DEFUN([gl_FUNC_FCHDIR], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_DECLS_ONCE([fchdir]) if test $ac_cv_have_decl_fchdir = no; then HAVE_DECL_FCHDIR=0 fi AC_REQUIRE([gl_TEST_FCHDIR]) if test $HAVE_FCHDIR = 0; then AC_LIBOBJ([fchdir]) gl_PREREQ_FCHDIR AC_DEFINE([REPLACE_FCHDIR], [1], [Define to 1 if gnulib's fchdir() replacement is used.]) dnl We must also replace anything that can manipulate a directory fd, dnl to keep our bookkeeping up-to-date. We don't have to replace dnl fstatat, since no platform has fstatat but lacks fchdir. AC_CACHE_CHECK([whether open can visit directories], [gl_cv_func_open_directory_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <fcntl.h> ]], [return open(".", O_RDONLY) < 0;])], [gl_cv_func_open_directory_works=yes], [gl_cv_func_open_directory_works=no], [case "$host_os" in # Guess yes on Linux systems. linux-* | linux) gl_cv_func_open_directory_works="guessing yes" ;; # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_open_directory_works="guessing yes" ;; # Guess no on native Windows. mingw*) gl_cv_func_open_directory_works="guessing no" ;; # If we don't know, assume the worst. *) gl_cv_func_open_directory_works="guessing no" ;; esac ])]) case "$gl_cv_func_open_directory_works" in *yes) ;; *) AC_DEFINE([REPLACE_OPEN_DIRECTORY], [1], [Define to 1 if open() should work around the inability to open a directory.]) ;; esac fi ]) # Determine whether to use the overrides in lib/fchdir.c. AC_DEFUN([gl_TEST_FCHDIR], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_CHECK_FUNCS_ONCE([fchdir]) if test $ac_cv_func_fchdir = no; then HAVE_FCHDIR=0 fi ]) # Prerequisites of lib/fchdir.c. AC_DEFUN([gl_PREREQ_FCHDIR], [:])