[xserver-commit] xserver configure.ac,3.41,3.42

[Jaymz Julian]

Committed by: jaymz

Update of /cvs/xserver/xserver
In directory pdx:/tmp/cvs-serv28385

Modified Files:
	configure.ac 
Log Message:

Read unaligned in 24bpp rgb packed pixel on architectures which allow it
(trivial for the bgr case as well, but my video card doens't do that, so
I didn't implent it)



Index: configure.ac
===================================================================
RCS file: /cvs/xserver/xserver/configure.ac,v
retrieving revision 3.41
retrieving revision 3.42
diff -u -d -r3.41 -r3.42
--- configure.ac	8 Dec 2003 01:55:06 -0000	3.41
+++ configure.ac	18 Dec 2003 12:19:47 -0000	3.42
@@ -333,6 +333,24 @@
 	XSERVER_CFLAGS="$GCC_WARNINGS $XSERVER_CFLAGS"
 fi
 
+AC_MSG_CHECKING(if unaligned word accesses behave as expected)
+AC_TRY_RUN([
+#include <stdio.h>
+
+int main()
+{
+        char j[8]={1,2,3,4,5,6,7,8};
+        int k= *(int *)(j+1);
+        if(k==0x02030405 || k==0x05040302)
+                return 0;
+        return 1;
+}
+],
+ [AC_DEFINE(WORKING_UNALIGNED_INT, 1, [unaligned word accesses behave as expected])
+  AC_MSG_RESULT(yes)], 
+ AC_MSG_RESULT(no),
+ AC_MSG_RESULT(assuming not on target machine))
+
 AC_OUTPUT([
 Makefile
 include/Makefile