| configure.ac: Verify that the Loongson MMI code can link |
| |
| The Loongson MMI code modifies -march and as a result it breaks linking |
| when the rest of the code is built with a different -match/-mtune. |
| This patch fixes the problem by trying to link the code instead of just |
| compiling it. This patch is already committed upstream. |
| |
| Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> |
| |
| From d77d75cc6e5de14d027d22b70389a4d0c71048b9 Mon Sep 17 00:00:00 2001 |
| From: Markos Chandras <markos.chandras@imgtec.com> |
| Date: Wed, 15 May 2013 16:51:20 +0000 |
| Subject: Use AC_LINK_IFELSE to check if the Loongson MMI code can link |
| |
| The Loongson code is compiled with -march=loongson2f to enable the MMI |
| instructions, but binutils refuses to link object code compiled with |
| different -march settings, leading to link failures later in the |
| compile. This avoids that problem by checking if we can link code |
| compiled for Loongson. |
| |
| Reviewed-by: Matt Turner <mattst88@gmail.com> |
| Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> |
| --- |
| diff --git a/configure.ac b/configure.ac |
| index c43a0d2..221179f 100644 |
| --- a/configure.ac |
| +++ b/configure.ac |
| @@ -279,7 +279,7 @@ AC_MSG_CHECKING(whether to use Loongson MMI assembler) |
| |
| xserver_save_CFLAGS=$CFLAGS |
| CFLAGS=" $LS_CFLAGS $CFLAGS -I$srcdir" |
| -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ |
| +AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
| #ifndef __mips_loongson_vector_rev |
| #error "Loongson Multimedia Instructions are only available on Loongson" |
| #endif |
| -- |
| cgit v0.9.0.2-2-gbebe |
