Compiler intrinsic '__m128' error when building clr-samples (Ubuntu/Clang 3.9)

[juliuslouw]

While porting a .NET Core profiler to Linux (specifically Ubuntu), the build fails with the following errors below. I'm able to reproduce the issue in the example hosted at Microsoft/clr-samples. The sample there works out-of-the-box but starts failing immediately when a simple #include <algorithm> directive is added.

In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/algorithm:62:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/stl_algo.h:66:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/random:50:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0/bits/opt_random.h:33:
In file included from /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/x86intrin.h:29:
In file included from /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/immintrin.h:40:
/usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/pmmintrin.h:45:19: error: unknown type name '__m128i'; did you mean '__m128'?
static __inline__ __m128i __DEFAULT_FN_ATTRS
                  ^
/home/developer/Projects/cryptonomicon/profiler/../modules/coreclr/v2.0.5/src/pal/inc/rt/xmmintrin.h:32:15: note: '__m128' declared here
typedef float __m128 __attribute__((__vector_size__(16)));

In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/algorithm:62:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/stl_algo.h:66:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/random:50:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/x86_64-linux-gnu/c++/5.4.0/bits/opt_random.h:33:
In file included from /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/x86intrin.h:29:
In file included from /usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/immintrin.h:40:
/usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/pmmintrin.h:45:27: error: '__target__' attribute only applies to functions
static __inline__ __m128i __DEFAULT_FN_ATTRS
                          ^
/usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/pmmintrin.h:31:50: note: expanded from macro '__DEFAULT_FN_ATTRS'
  __attribute__((__always_inline__, __nodebug__, __target__("sse3")))
                                                 ^
/usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/pmmintrin.h:46:17: error: use of undeclared identifier '__m128i'
_mm_lddqu_si128(__m128i const *__p)
                ^
/usr/lib/llvm-3.9/bin/../lib/clang/3.9.1/include/pmmintrin.h:46:36: error: expected ';' after top level declarator
_mm_lddqu_si128(__m128i const *__p)

I'm able to resolve the error by using Clang 3.5, but the coreclr instructions appears to prefer Clang 3.9 going forward. Any advice or suggestions would be very much appreciated!

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