[llvm-dev] clang dependency generation (-Mxx) with -emit-llvm

[Chandler Carruth via llvm-dev]

This question is probably better addressed to the Clang mailing list.
Moving llvm-dev to BCC so replies move to cfe-dev.

On Tue, May 17, 2016 at 9:21 AM Dustyn Blasig via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi All,
>
> I'm attempting to use the above-mentioned flags together but I cannot
> figure out a combination of flags that will get clang to emit the
> dependency file if the emit-llvm flag is also on. I've seen examples in the
> forums of people doing this, so it seems like it should work, but there
> must be some small mistake I'm making.
>
> clang++ -O2 -o build/network.ll network.cxx -std=c++11 -S -emit-llvm
> -target my_target -I /depot/include -I build -v -MMD -MP -MF build/
> network.ll.dep.mk -MT build/network.ll
>
> I've tried a number of variations on the compiler -M flags to no avail. We
> do have a custom target my_target that really only adds a few additional
> defines into the environment. Do we need to specify something in our target
> to allow dependency generation?
>
> Thanks!
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> llvm-dev at lists.llvm.org
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