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dnl Copyright (C) 1993-2003 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Bruno Haible, Marcus Daniels, Sam Steingold.
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AC_DEFUN([CL_OPENFLAGS],
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dnl BSD systems require #include <sys/file.h> for O_RDWR etc. being defined.
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[AC_BEFORE([$0], [CL_MMAP])
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AC_CHECK_HEADERS(sys/file.h)
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if test $ac_cv_header_sys_file_h = yes; then
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#include <sys/types.h>
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openflags_prog='int x = O_RDWR | O_RDONLY | O_WRONLY | O_CREAT | O_TRUNC;'
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CL_COMPILE_CHECK([O_RDWR in fcntl.h], cl_cv_decl_O_RDWR_fcntl_h,
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$openflags_decl, $openflags_prog, openflags_ok=1)dnl
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if test -z "$openflags_ok"; then
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dnl CL_COMPILE_CHECK([O_RDWR in sys/file.h], cl_cv_decl_O_RDWR_sys_file_h,
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dnl $openflags_decl[#include <sys/file.h>], $openflags_prog,
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AC_DEFINE(OPEN_NEEDS_SYS_FILE_H,,[need <sys/file.h> for using open() flags like O_RDWR])
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dnl openflags_ok=1)dnl