on mail/components/search/mdimporter/Makefile.in, CC and CXX is unexported for xcodebuild command. but, if CC and CXX is absolute path, it build successes.
Created attachment 646805 [details] [diff] [review] set CC, CXX to absolute path
https://hg.mozilla.org/comm-central/rev/dcd3297375fe Thanks for the patch, Abe! One request - to make life easier for those checking in on your behalf, please make sure that your hg is configured to generate patches that contain all the needed metadata for checkin. Thanks! https://developer.mozilla.org/en-US/docs/Creating_a_patch_that_can_be_checked_in