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avoid broken random.h
From: |
Eric Blake |
Subject: |
avoid broken random.h |
Date: |
Thu, 26 Feb 2009 17:24:44 +0000 (UTC) |
User-agent: |
Loom/3.14 (http://gmane.org/) |
I encountered a weird build failure on a Solaris machine:
checking random.h usability... no
checking random.h presence... yes
configure: WARNING: random.h: present but cannot be compiled
configure: WARNING: random.h: check for missing prerequisite headers?
configure: WARNING: random.h: see the Autoconf documentation
configure: WARNING: random.h: section "Present But Cannot Be Compiled"
configure: WARNING: random.h: proceeding with the preprocessor's result
configure: WARNING: random.h: in the future, the compiler will take precedence
checking for random.h... yes
and traced it to the fact that /usr/local/include/random.h was an ObjC header
file installed by Swarm, and not a C system header.
autoconf.git automatically avoids this file, but we might as well avoid it even
with 2.63 and earlier, and without that verbose warning. So I'm applying this:
From: Eric Blake <address@hidden>
Date: Thu, 26 Feb 2009 10:00:28 -0700
Subject: [PATCH] stdlib: favor compiler check of random.h
* m4/stdlib_h.m4 (gl_STDLIB_H): Skip preprocessor check. Needed
to avoid an ObjC random.h installed by Swarm.
Signed-off-by: Eric Blake <address@hidden>
---
ChangeLog | 6 ++++++
m4/stdlib_h.m4 | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 3aa297e..a34e3f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-02-26 Eric Blake <address@hidden>
+
+ stdlib: favor compiler check of random.h
+ * m4/stdlib_h.m4 (gl_STDLIB_H): Skip preprocessor check. Needed
+ to avoid an ObjC random.h installed by Swarm.
+
2009-02-26 Bruno Haible <address@hidden>
Work around *printf bug with %g directive and 0.0 on HP-UX 10.20.
diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4
index 515befe..b295f16 100644
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 14
+# stdlib_h.m4 serial 15
dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -8,7 +8,7 @@ AC_DEFUN([gl_STDLIB_H],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
gl_CHECK_NEXT_HEADERS([stdlib.h])
- AC_CHECK_HEADERS([random.h])
+ AC_CHECK_HEADERS([random.h], [], [], [AC_INCLUDES_DEFAULT])
if test $ac_cv_header_random_h = yes; then
HAVE_RANDOM_H=1
else
--
1.6.1.2
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