allegro4: fix build

error message was:

| CMake Error: TRY_RUN() invoked in cross-compiling mode, please set the following cache variables appropriately:
|    ALLEGRO_USE_CONSTRUCTOR_EXITCODE (advanced)
| For details see /home/Superandy/tmp/oe-core-eglibc/work/armv7a-vfp-neon-angstrom-linux-gnueabi/allegro4/4.4.2-r0/allegro-4.4.2/TryRunResults.cmake

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>

recipes-gamelib/allegro4/allegro4-4.4.2/0001-CMakeLists.txt-don-t-try-to-run-in-cross-environment.patch

@@ -0,0 +1,37 @@
+From ad105eee25e248e56c87d82fe8c70c44b4676bd9 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
+Date: Wed, 9 Jan 2013 01:31:38 +0100
+Subject: [PATCH] CMakeLists.txt: don't try to run in cross environment
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Upstream-Status: Inappropriate [Cross-compile specific]
+
+Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
+---
+ CMakeLists.txt |    8 --------
+ 1 files changed, 0 insertions(+), 8 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 245be10..8f4e331 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -189,14 +189,6 @@ if(UNIX)
+         set(MAP_FAILED "((void *) -1)")
+     endif()
+ 
+-    check_c_source_runs("
+-        static int notsupported = 1;
+-        void test_ctor (void) __attribute__((constructor));
+-        void test_ctor (void) { notsupported = 0; }
+-        int main(void) { return (notsupported); }
+-        "
+-        ALLEGRO_USE_CONSTRUCTOR)
+-
+     find_library(RT_LIBRARY rt)
+     check_c_source_compiles("
+         #include <time.h>
+-- 
+1.7.4.4
+

recipes-gamelib/allegro4/allegro4_4.4.2.bb

@@ -10,7 +10,8 @@ PR = "r0"
 DEPENDS = "virtual/libgl libglu libx11 libxcursor physfs openal jpeg"
 
 SRC_URI = "${SOURCEFORGE_MIRROR}/alleg/allegro/${PV}/allegro-${PV}.tar.gz \
-file://avoid_lib_paths.patch \
+           file://avoid_lib_paths.patch \
+           file://0001-CMakeLists.txt-don-t-try-to-run-in-cross-environment.patch \
 "
 
 SRC_URI[md5sum] = "4db71b0460fc99926ae91d223199c2e6"
@@ -20,3 +21,5 @@ inherit cmake binconfig
 
 S = "${WORKDIR}/allegro-${PV}"
 
+FILES_${PN} += "${libdir}/allegro"
+FILES_${PN}-dbg += "${libdir}/allegro/*/.debug"