Merge r102699.

llvm-svn: 102700
diff --git a/llvm-gcc-4.2/build_gcc b/llvm-gcc-4.2/build_gcc
index 569fd11..85cc92c 100755
--- a/llvm-gcc-4.2/build_gcc
+++ b/llvm-gcc-4.2/build_gcc
@@ -769,13 +769,16 @@
 
 # Install libLTO.dylib
 if [ "$INSTALL_LIBLTO" == yes ]; then
-  if [ ! -r $LLVMCORE_PATH/lib/libLTO.dylib ]; then
-    echo "Error: llvmCore installation is missing libLTO.dylib"
-    exit 1
+  LTO=$LLVMCORE_PATH/lib/libLTO.dylib
+  if [ ! -r $LTO  ]; then
+    LTO=$LLVMCORE_PATH/../lib/libLTO.dylib
+    if [ ! -r $LTO ]; then
+      echo "Error: llvmCore installation is missing libLTO.dylib"
+      exit 1
+    fi
   fi
   mkdir -p $DEST_DIR/Developer/usr/lib
-  cp $LLVMCORE_PATH/lib/libLTO.dylib \
-     $DEST_DIR/Developer/usr/lib/libLTO.dylib
+  cp $LTO $DEST_DIR/Developer/usr/lib/libLTO.dylib
   strip -S $DEST_DIR/Developer/usr/lib/libLTO.dylib
 
   # Add a symlink in /usr/lib for B&I.