--- a/build/macosx/local-mozconfig.common
+++ b/build/macosx/local-mozconfig.common
@@ -12,21 +12,23 @@ if [ "x$IS_NIGHTLY" = "xyes" ]; then
 fi
 . "$topsrcdir/build/mozconfig.common"
 
 if [ -d "$topsrcdir/clang" ]; then
     # mozilla-central based build
     export CC=$topsrcdir/clang/bin/clang
     export CXX=$topsrcdir/clang/bin/clang++
     export LLVMCONFIG=$topsrcdir/clang/bin/llvm-config
+    export DSYMUTIL=$topsrcdir/clang/bin/llvm-dsymutil
 elif [ -d "$topsrcdir/../clang" ]; then
     # comm-central based build
     export CC=$topsrcdir/../clang/bin/clang
     export CXX=$topsrcdir/../clang/bin/clang++
     export LLVMCONFIG=$topsrcdir/../clang/bin/llvm-config
+    export DSYMUTIL=$topsrcdir/../clang/bin/llvm-dsymutil
 fi
 
 # If not set use the system default clang
 if [ -z "$CC" ]; then
     export CC=clang
 fi
 
 # If not set use the system default clang++