configure: add support for LLVM 4.0.0svn static libs

Signed-off-by: Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-and-Tested-by: Michel Dänzer <michel.daenzer@amd.com>
diff --git a/configure.ac b/configure.ac
index f6b27ae..7d1a9bb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2535,7 +2535,7 @@
         AC_MSG_WARN([Building mesa with statically linked LLVM may cause compilation issues])
         dnl We need to link to llvm system libs when using static libs
         dnl However, only llvm 3.5+ provides --system-libs
-        if test $LLVM_VERSION_MAJOR -eq 3 -a $LLVM_VERSION_MINOR -ge 5; then
+        if test $LLVM_VERSION_MAJOR -ge 4 -o $LLVM_VERSION_MAJOR -eq 3 -a $LLVM_VERSION_MINOR -ge 5; then
             LLVM_LIBS="$LLVM_LIBS `$LLVM_CONFIG --system-libs`"
         fi
     fi