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24 lines
702 B
Text
24 lines
702 B
Text
# flock.m4 serial 3
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dnl Copyright (C) 2008-2017 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_FLOCK],
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[
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AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
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AC_CHECK_FUNCS_ONCE([flock])
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if test $ac_cv_func_flock = no; then
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HAVE_FLOCK=0
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fi
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])
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dnl Prerequisites of lib/flock.c.
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AC_DEFUN([gl_PREREQ_FLOCK],
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[
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AC_CHECK_FUNCS_ONCE([fcntl])
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AC_CHECK_HEADERS_ONCE([unistd.h])
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dnl Do we have a POSIX fcntl lock implementation?
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AC_CHECK_MEMBERS([struct flock.l_type],[],[],[[#include <fcntl.h>]])
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])
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