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Re: llvm on i386?

On Thu, 29 Dec 2016 20:47:09 -0500
Greg Troxel <> wrote:

> On netbsd-7 i386, with the newly-minted 2016Q4 and everything up to
> date, building llvm from pkgsrc fails:
>   -- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
>   -- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB
>   -- Performing Test HAVE_CXX_ATOMICS64_WITHOUT_LIB - Failed
>   -- Looking for __atomic_load_8 in atomic
>   -- Looking for __atomic_load_8 in atomic - not found
>   CMake Error at cmake/modules/CheckAtomic.cmake:74 (message):
>     Host compiler appears to require libatomic, but cannot find it.
>   Call Stack (most recent call first):
>     cmake/config-ix.cmake:317 (include)
>     CMakeLists.txt:461 (include)
> Is this a known issue, a sign of my system having something wrong, or
> something else?  Surely llvm works on i386, but I'm not clear on 64-bit
> atomic ops on the i386 arch.
> (llvm 3.9.0 built fine with netbsd-7 amd64 and 2016Q4.)
> (I realize there is clang/llvm in base with MKLLVM, but it seems like the
> pkgsrc entries should also work.)


You'll need to pick up this patch and apply it to the aforementioned

cvs rdiff -u -r1.14 -r1.15 pkgsrc/lang/libLLVM/Makefile

(with condolences to owners of pre pentium-era machines)


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