fix crash log magic

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@152693 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/buildit b/lib/buildit
index a3c2488..75a7028 100755
--- a/lib/buildit
+++ b/lib/buildit
@@ -53,6 +53,10 @@
         -compatibility_version 1 \
         -install_name /usr/lib/libc++abi.dylib \
         -lSystem"
+	if [ -f "${SDKROOT}/usr/local/lib/libCrashReporterClient.a" ]
+	then
+		LDSHARED_FLAGS+=" -lCrashReporterClient"
+	fi
     ;;
   *-*-mingw*)
     # FIXME: removing libgcc and libsupc++ dependencies means porting libcxxrt and LLVM/compiler-rt