Messages in this thread | | | Date | Sat, 5 Dec 2020 23:50:28 -0700 | From | Nathan Chancellor <> | Subject | Re: [PATCH v8 00/16] Add support for Clang LTO |
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On Fri, Dec 04, 2020 at 02:52:41PM -0800, Sami Tolvanen wrote: > On Thu, Dec 3, 2020 at 2:32 PM Nick Desaulniers <ndesaulniers@google.com> wrote: > > > > So I'd recommend to Sami to simply make the Kconfig also depend on > > clang's integrated assembler (not just llvm-nm and llvm-ar). > > Sure, sounds good to me. What's the preferred way to test for this in Kconfig? > > It looks like actually trying to test if we have an LLVM assembler > (e.g. using $(as-instr,.section > ".linker-options","e",@llvm_linker_options)) doesn't work as Kconfig > doesn't pass -no-integrated-as to clang here. I could do something > simple like $(success,echo $(LLVM) $(LLVM_IAS) | grep -q "1 1"). > > Thoughts? > > Sami
I think
depends on $(success,test $(LLVM_IAS) -eq 1)
should work, at least according to my brief test.
Cheers, Nathan
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