[LLVMdev] Living on Clang

Douglas Gregor dgregor at apple.com
Thu Apr 15 14:31:05 PDT 2010

On Apr 15, 2010, at 2:27 PM, Lacey, Mark wrote:

>> We want to make Clang great, and we need your help!
> Doug,
> I don't see any type of selfbuild target in the LLVM top level makefile.
> This would be a useful way to automate the self build process.
> I've used similar mechanisms before on other compilers, where you can
> trivially invoke a three phase build (first you do a full build with your
> system compiler, then you use your built compiler to do another full build,
> and then take that most recent build compiler to build yet again...). The
> build options of the last two phases are identical, and the object files
> from those last two passes are compared to ensure that they are identical.

Yes, we would love to have this, but nobody has taken the time to write the Makefile/CMake magic to make it happen.

	- Doug

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