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- # unistd_h.m4 serial 3
- dnl Copyright (C) 2006 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.
- dnl Written by Simon Josefsson
- AC_DEFUN([gl_HEADER_UNISTD],
- [
- AC_CHECK_HEADERS([unistd.h], [
- UNISTD_H=''
- ], [
- UNISTD_H='unistd.h'
- ])
- AC_SUBST(UNISTD_H)
- dnl This module decides to build unistd.h if it is missing.
- dnl The fchdir module decides to build unistd.h if fchdir() is missing.
- dnl Therefore check for the prerequisites of lib/unistd.h always.
- gl_PREREQ_UNISTD
- ])
- dnl Prerequisites of lib/unistd.h.
- AC_DEFUN([gl_PREREQ_UNISTD],
- [
- AC_CHECK_HEADERS_ONCE([unistd.h])
- if test $ac_cv_header_unistd_h = yes; then
- gl_ABSOLUTE_HEADER([unistd.h])
- ABSOLUTE_UNISTD_H=\"$gl_cv_absolute_unistd_h\"
- fi
- AC_SUBST([ABSOLUTE_UNISTD_H])
- ])
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