[LLVMdev] Deprecating autoconf/make?

Óscar Fuentes ofv at wanadoo.es
Thu May 23 17:13:36 PDT 2013

[Re-adding llvmdev to CC list]

Richard Smith <richard at metafoo.co.uk> writes:

>> >> >> I think this second option is the more elegant one (less source
>> >> >> dependencies), but is it possible in a single CMake build?
>> >> >
>> >> > Right now, no,
>> >>
>> >> A CMake build can run CMake builds. This is currently done for
>> >> cross-compiling LLVM: the "cross-compiling" CMake build can configure
>> >> and run a nested CMake build for building a native tablegen.
>> >
>> > That's not "a single CMake build" in the way I was understanding that
>> > phrase.
>> The point is that the user needs a single cmake&make invocation.
> It's still not possible *right now*. No-one has implemented support for
> this.

I'm afraid that we are miscommunicating. The first paragraph quoted on
this message is a question by someone who clearly asks if is it possible
(i.e. technically achievable) to execute a CMake build from another. The
answer is yes, as demonstrated by how tablegen is managed while
cross-compiling by the LLVM CMake scripts. AFAIK solving the compiler-rt
case would be achieved by a similar (not identical, but similar)

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