FYI -- Mac Xcode 7.0 (7A220) causes build failure

Thu Sep 17 20:23:44 UTC 2015

$ make all
Compiling 5 files for BUILD_GENMODULESLIST
Building target 'all' in configuration 'macosx-x86_64-normal-server-release'
Compiling 8 files for BUILD_TOOLS_LANGTOOLS
<path>/jdk9/hotspot/make/bsd/makefiles/gcc.make:324: *** "Update compiler workarounds for Clang 7.0".  Stop.

This is the Xcode version that supports IOS 9 development.  The previous Version 6.4 (6E35b) worked fine.