Clang and "error: SSSE3 instruction set not enabled"

[noloader]

cryptest.sh is revealing the following failure under Ubuntu 15. The main portion of the testing occurs using GCC. If Clang is available, then a quick testing pass is made with Clang. (The converse also holds. If Clang is the primary compiler for testing, then a quick pass is made with GCC).

The interesting thing below is the machine is a 5th generation Core i7, so -march=native should include a cornucopia CPU features, including AVX and BMI. Another unusual thing is the CXXFLAGS used. -maes -mrdrnd -mrdseed -mpclmul looks like artifacts from the "AES, RDRAND and RDSEED" test.

************************************
Testing: Clang compiler
/usr/bin/clang++ -DNDEBUG -g2 -O2 -march=native -maes -mrdrnd -mrdseed -mpclmul -fPIC -march=native -pipe -c cryptlib.cpp
/usr/bin/clang++ -DNDEBUG -g2 -O2 -march=native -maes -mrdrnd -mrdseed -mpclmul -fPIC -march=native -pipe -c cpu.cpp
/usr/bin/clang++ -DNDEBUG -g2 -O2 -march=native -maes -mrdrnd -mrdseed -mpclmul -fPIC -march=native -pipe -c 3way.cpp
/usr/bin/clang++ -DNDEBUG -g2 -O2 -march=native -maes -mrdrnd -mrdseed -mpclmul -fPIC -march=native -pipe -c adler32.cpp
In file included from cpu.cpp:12:
In file included from ./cpu.h:78:
/usr/bin/../lib/clang/3.4/include/tmmintrin.h:28:2: error: "SSSE3 instruction set not enabled"
#error "SSSE3 instruction set not enabled"
 ^
In file included from cpu.cpp:12:
In file included from ./cpu.h:92:
/usr/bin/../lib/clang/3.4/include/smmintrin.h:28:2: error: "SSE4.1 instruction set not enabled"
#error "SSE4.1 instruction set not enabled"
 ^
2 errors generated.
make: *** [cpu.o] Error 1
make: *** Waiting for unfinished jobs....
ERROR: failed to make cryptest.exe

And:

$ clang --version
Ubuntu clang version 3.4-1ubuntu3 (tags/RELEASE_34/final) (based on LLVM 3.4)
Target: x86_64-pc-linux-gnu
Thread model: posix

[noloader]

Fixed at Commit 7c3967ad8f6a61f2.