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Diffstat (limited to 'gl/m4/unistd_h.m4')
-rw-r--r-- | gl/m4/unistd_h.m4 | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gl/m4/unistd_h.m4 b/gl/m4/unistd_h.m4 new file mode 100644 index 00000000..9d499dfe --- /dev/null +++ b/gl/m4/unistd_h.m4 | |||
@@ -0,0 +1,32 @@ | |||
1 | # unistd_h.m4 serial 3 | ||
2 | dnl Copyright (C) 2006 Free Software Foundation, Inc. | ||
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 | dnl Written by Simon Josefsson | ||
8 | |||
9 | AC_DEFUN([gl_HEADER_UNISTD], | ||
10 | [ | ||
11 | AC_CHECK_HEADERS([unistd.h], [ | ||
12 | UNISTD_H='' | ||
13 | ], [ | ||
14 | UNISTD_H='unistd.h' | ||
15 | ]) | ||
16 | AC_SUBST(UNISTD_H) | ||
17 | dnl This module decides to build unistd.h if it is missing. | ||
18 | dnl The fchdir module decides to build unistd.h if fchdir() is missing. | ||
19 | dnl Therefore check for the prerequisites of lib/unistd.h always. | ||
20 | gl_PREREQ_UNISTD | ||
21 | ]) | ||
22 | |||
23 | dnl Prerequisites of lib/unistd.h. | ||
24 | AC_DEFUN([gl_PREREQ_UNISTD], | ||
25 | [ | ||
26 | AC_CHECK_HEADERS_ONCE([unistd.h]) | ||
27 | if test $ac_cv_header_unistd_h = yes; then | ||
28 | gl_ABSOLUTE_HEADER([unistd.h]) | ||
29 | ABSOLUTE_UNISTD_H=\"$gl_cv_absolute_unistd_h\" | ||
30 | fi | ||
31 | AC_SUBST([ABSOLUTE_UNISTD_H]) | ||
32 | ]) | ||