Re: Firefox build 10 min slower on Mac OS X 10.9 with /usr/local/opt/llvm/bin/clang (v. 3.8) compared to /usr/bin/clang (v. 3.5)

On 7/26/2016 10:30 PM, Gregory Szorc wrote: Does ccache come into play at all? I've not explicitly configured ccache on my machine. I don't know if it is part of the default configuration, but I don't seem to find any compiler cache directory under my home directory and ccache is not mentioned

Firefox build 10 min slower on Mac OS X 10.9 with /usr/local/opt/llvm/bin/clang (v. 3.8) compared to /usr/bin/clang (v. 3.5)

I build mozilla-central on OS X 10.9.5 with the latest compatible version of XCode. $ clang --version Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn) Target: x86_64-apple-darwin13.4.0 Thread model: posix A clobber build with a plain .mozconfig file takes about 15 minutes. As a re