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-rw-r--r--gl/m4/open-cloexec.m421
1 files changed, 21 insertions, 0 deletions
diff --git a/gl/m4/open-cloexec.m4 b/gl/m4/open-cloexec.m4
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1# Test whether O_CLOEXEC is defined.
2
3dnl Copyright 2017-2023 Free Software Foundation, Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8AC_DEFUN([gl_PREPROC_O_CLOEXEC],
9[
10 AC_CACHE_CHECK([for O_CLOEXEC],
11 [gl_cv_macro_O_CLOEXEC],
12 [AC_COMPILE_IFELSE(
13 [AC_LANG_PROGRAM([[#include <fcntl.h>
14 #ifndef O_CLOEXEC
15 choke me;
16 #endif
17 ]],
18 [[return O_CLOEXEC;]])],
19 [gl_cv_macro_O_CLOEXEC=yes],
20 [gl_cv_macro_O_CLOEXEC=no])])
21])