Build failure on Ubuntu ARM

[kraiskil]

clpeak does not build on Ubuntu 13.10 ARM out-of-the box:
kraiskil@notdroid:/opencl/clpeak/build$ cmake ..
-- The C compiler identification is GNU 4.8.1
-- The CXX compiler identification is GNU 4.8.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Setting build type to Release
-- Selected OpenCL includes from /usr/include
-- Selected OpenCL lib /usr/lib/arm-linux-gnueabihf/libOpenCL.so
-- Configuring done
-- Generating done
-- Build files have been written to: /home/kraiskil/opencl/clpeak/build
kraiskil@notdroid:/opencl/clpeak/build$ make
Scanning dependencies of target clpeak
[ 11%] Building CXX object CMakeFiles/clpeak.dir/src/common.cpp.o
In file included from /home/kraiskil/opencl/clpeak/src/include/common.h:7:0,
from /home/kraiskil/opencl/clpeak/src/common.cpp:1:
/usr/include/CL/cl.hpp:216:23: fatal error: emmintrin.h: No such file or directory
#include <emmintrin.h>
^
compilation terminated.
make[2]: *** [CMakeFiles/clpeak.dir/src/common.cpp.o] Error 1
make[1]: *** [CMakeFiles/clpeak.dir/all] Error 2
make: *** [all] Error 2

The cl.hpp is installed via Ubuntu repositories, the opencl-headers package version 1.2-2013.06.28-2. Updating to latest khronos.org cl.hpp does not help or change the error.

[krrishnarraj]

This is a known issue in cl.hpp for ARM systems. I had raised an issue in khronos http://www.khronos.org/message_boards/showthread.php/9190-1-2-cl-hpp-on-ARM-systems but no one seems to be bothered!

emmintrin.h is x86 related sse header. It should not be included for arm systems. pocl has a patch for it https://github.com/pocl/pocl/blob/master/tools/patches/khronos_cl.hpp.patch

[krrishnarraj]

Its fixed now for arm. Uses a local copy of cl.hpp for arm systems
@kraiskil please verify once from your side

[kraiskil]

Now it compiles, but seems the floating point test spinns. Scalar float test has not produced an output for a while, and cpu is running at 400%. I only have pocl available to test against on this machine, so it could be an issue with pocl, not clpeak. I'll dig around a bit.

[krrishnarraj]

closing this thread. Original issue has been resolved I believe