From bb928b7ac4bb181dcb9bcb520b403300c410e4f9 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Mon, 8 Nov 1999 09:18:27 +0000
Subject: effectively require AC_CHECK_HEADERS(unistd.h)

---
 m4/link-follow.m4 | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'm4/link-follow.m4')

diff --git a/m4/link-follow.m4 b/m4/link-follow.m4
index dd75d7bbc..350c3959b 100644
--- a/m4/link-follow.m4
+++ b/m4/link-follow.m4
@@ -7,6 +7,11 @@ AC_DEFUN(jm_AC_FUNC_LINK_FOLLOWS_SYMLINK,
   AC_CACHE_CHECK([whether link(2) follows symlinks],
 		 jm_ac_cv_func_link_follows_symlink,
   [
+    dnl poor-man's AC_REQUIRE: FIXME: repair this once autoconf-3 provides
+    dnl the appropriate framework.
+    test -z "$ac_cv_header_unistd_h" \
+      && AC_CHECK_HEADERS(unistd.h)
+
     # Create a regular file.
     echo > conftest.file
     AC_TRY_RUN(
-- 
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