Commit | Line | Data |
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3d458a81 | 1 | # flock.m4 serial 3 |
f0007cad | 2 | dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. |
f240aacb LC |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | AC_DEFUN([gl_FUNC_FLOCK], | |
8 | [ | |
9 | AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS]) | |
10 | AC_CHECK_FUNCS_ONCE([flock]) | |
11 | if test $ac_cv_func_flock = no; then | |
12 | HAVE_FLOCK=0 | |
f240aacb LC |
13 | fi |
14 | ]) | |
15 | ||
16 | dnl Prerequisites of lib/flock.c. | |
17 | AC_DEFUN([gl_PREREQ_FLOCK], | |
18 | [ | |
19 | AC_CHECK_FUNCS_ONCE([fcntl]) | |
49114fd4 | 20 | AC_CHECK_HEADERS_ONCE([unistd.h]) |
f240aacb LC |
21 | |
22 | dnl Do we have a POSIX fcntl lock implementation? | |
23 | AC_CHECK_MEMBERS([struct flock.l_type],[],[],[[#include <fcntl.h>]]) | |
24 | ]) |