diff options
Diffstat (limited to 'gnulib-m4/open-cloexec.m4')
| -rw-r--r-- | gnulib-m4/open-cloexec.m4 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gnulib-m4/open-cloexec.m4 b/gnulib-m4/open-cloexec.m4 new file mode 100644 index 00000000..16cd5ec4 --- /dev/null +++ b/gnulib-m4/open-cloexec.m4 @@ -0,0 +1,21 @@ +# Test whether O_CLOEXEC is defined. + +dnl Copyright 2017-2022 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_PREPROC_O_CLOEXEC], +[ + AC_CACHE_CHECK([for O_CLOEXEC], + [gl_cv_macro_O_CLOEXEC], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[#include <fcntl.h> + #ifndef O_CLOEXEC + choke me; + #endif + ]], + [[return O_CLOEXEC;]])], + [gl_cv_macro_O_CLOEXEC=yes], + [gl_cv_macro_O_CLOEXEC=no])]) +]) |