mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 03:40:34 +02:00
f0007cade0
* m4/gnulib-cache.m4: Use `dirfd'. * libguile/filesys.c: Include Gnulib's <dirent.h> directly. (dirfd): Remove. Suggested by Bruno Haible <bruno@clisp.org>.
37 lines
1.2 KiB
Text
37 lines
1.2 KiB
Text
# Check for stdalign.h that conforms to C11.
|
|
|
|
dnl Copyright 2011-2012 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.
|
|
|
|
# Prepare for substituting <stdalign.h> if it is not supported.
|
|
|
|
AC_DEFUN([gl_STDALIGN_H],
|
|
[
|
|
AC_CACHE_CHECK([for working stdalign.h],
|
|
[gl_cv_header_working_stdalign_h],
|
|
[AC_COMPILE_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <stdalign.h>
|
|
int align_int = alignof (int) + _Alignof (double);
|
|
|
|
/* Test _Alignas only on platforms where gnulib can help. */
|
|
#if \
|
|
(__GNUC__ || __IBMC__ || __IBMCPP__ \
|
|
|| 0x5110 <= __SUNPRO_C || 1300 <= _MSC_VER)
|
|
int alignas (8) alignas_int = 1;
|
|
#endif
|
|
]])],
|
|
[gl_cv_header_working_stdalign_h=yes],
|
|
[gl_cv_header_working_stdalign_h=no])])
|
|
|
|
if test $gl_cv_header_working_stdalign_h = yes; then
|
|
STDALIGN_H=''
|
|
else
|
|
STDALIGN_H='stdalign.h'
|
|
fi
|
|
|
|
AC_SUBST([STDALIGN_H])
|
|
AM_CONDITIONAL([GL_GENERATE_STDALIGN_H], [test -n "$STDALIGN_H"])
|
|
])
|