diff -r 000000000000 -r 6474c204b198 browser/config/mozconfigs/macosx64/debug
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/config/mozconfigs/macosx64/debug	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+. $topsrcdir/build/macosx/mozconfig.common
+
+ac_add_options --enable-debug
+ac_add_options --enable-trace-malloc
+ac_add_options --enable-accessibility
+ac_add_options --enable-signmar
+
+# Needed to enable breakpad in application.ini
+export MOZILLA_OFFICIAL=1
+
+ac_add_options --with-macbundlename-prefix=Firefox
+
+# Treat warnings as errors in directories with FAIL_ON_WARNINGS.
+ac_add_options --enable-warnings-as-errors
+
+# Package js shell.
+export MOZ_PACKAGE_JSSHELL=1
+
+. "$topsrcdir/build/mozconfig.common.override"