Mesa (master): autoconf: Only kink mcjit component when available.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: bd9bf7a42473dfbdae4b61dd2556eba9529e9dd0
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=bd9bf7a42473dfbdae4b61dd2556eba9529e9dd0

Author: José Fonseca <jose.r.fonseca at gmail.com>
Date:   Sat Jul 21 11:43:06 2012 +0100

autoconf: Only kink mcjit component when available.

Should fix build failures with older LLVM version, but only tested on
LLVM 3.1.

---

 configure.ac |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 1d60957..7b88331 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1847,10 +1847,14 @@ if test "x$enable_gallium_llvm" = xyes; then
 	    dnl We can't use $LLVM_VERSION because it has 'svn' stripped out,
 	    LLVM_LIBS="-lLLVM-`$LLVM_CONFIG --version`"
 	else
-	    LLVM_LIBS="`$LLVM_CONFIG --libs engine bitwriter mcjit`"
+            LLVM_COMPONENTS="engine bitwriter"
+            if $LLVM_CONFIG --components | grep -q '\<mcjit\>'; then
+                LLVM_COMPONENTS="${LLVM_COMPONENTS} mcjit"
+            fi
             if test "x$enable_opencl" = xyes; then
-                LLVM_LIBS="${LLVM_LIBS} `$LLVM_CONFIG --libs ipo linker instrumentation`"
+                LLVM_COMPONENTS="${LLVM_COMPONENTS} ipo linker instrumentation"
             fi
+            LLVM_LIBS="`$LLVM_CONFIG --libs ${LLVM_COMPONENTS}`"
 	fi
 	LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags`
 	LLVM_BINDIR=`$LLVM_CONFIG --bindir`