Added --with-extra-options=opts to specify additional options to build LLVM and run tests.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28882 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.config.in b/Makefile.config.in
index 03d6290..d1efb2b 100644
--- a/Makefile.config.in
+++ b/Makefile.config.in
@@ -103,6 +103,9 @@
 # Targets that we should build
 TARGETS_TO_BUILD=@TARGETS_TO_BUILD@
 
+# Extra options to compile LLVM with
+EXTRA_OPTIONS=@EXTRA_OPTIONS@
+
 # Endian-ness of the target
 ENDIAN=@ENDIAN@