Hi,
When cross-compiling, configuration stops with an error:
configure: error: cannot run test program while cross compiling
With the patch applied:
checking whether malloc(0) returns NULL... yes
Colin wrote in bug 24460:
add fourth argument to AC_RUN_IFELSE
libX11 fails to cross-compile unless --enable-malloc0returnsnull is
given
during configuration, since configure can't run test programs in this
situation. This is a sensible conservative default that should be used
by
default when cross-compiling rather than requiring it to be forced
explicitly.
Regards,
Gaetan
>From a572da405d2d0be4743a476b6a614860c6082428 Mon Sep 17 00:00:00 2001
From: Colin Watson <[email protected]>
Date: Sat, 10 Oct 2009 13:28:28 +0100
Subject: [PATCH] Use conservative default for malloc(0) when cross-compiling #24460
When cross-compiling, AC_RUN_IFELSE can't run test programs.
MALLOC_ZERO_RETURNS_NULL=yes is a conservative default in this case.
Signed-off-by: Colin Watson <[email protected]>
Signed-off-by: Gaetan Nadon <[email protected]>
---
xorg-macros.m4.in | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/xorg-macros.m4.in b/xorg-macros.m4.in
index 6f9635f..393186f 100644
--- a/xorg-macros.m4.in
+++ b/xorg-macros.m4.in
@@ -339,7 +339,8 @@ main() {
exit(m0 == 0 || r0 == 0 || c0 == 0 ? 0 : 1);
}],
[MALLOC_ZERO_RETURNS_NULL=yes],
- [MALLOC_ZERO_RETURNS_NULL=no])
+ [MALLOC_ZERO_RETURNS_NULL=no],
+ [MALLOC_ZERO_RETURNS_NULL=yes])
fi
AC_MSG_RESULT([$MALLOC_ZERO_RETURNS_NULL])
--
1.6.0.4
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