[Bug target/54404] [4.8 Regression] *cfstring* failures for (obj-c|g)++ on *-apple-darwin* after revision 186978

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54404

--- Comment #11 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-10-18 00:15:58 UTC ---
The darwin12 specific non-linker failures are suppressed if...

-isysroot `xcode-select
--print-path`/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk

is added to the compilation flags indicating that this is an ABI change.