Build fails without opencl-headers installed #49
Description
Following the build instruction (in a docker container from a blank Ubuntu 18.04 image), I get the error below. apt install opencl-headers fixes this. I find it odd, as it appears to me that we are building the headers too - so maybe they're built but not being recognized?
[ 86%] Built target opencl.pcm.target
[ 86%] Built target opencl.headers.target
[ 88%] Built target cl_headers
[ 88%] Building CXX object projects/cclang/CMakeFiles/opencl_clang.dir/common_clang.cpp.o
In file included from /dockerws/workspace/build/igc/IGC/BiFModule/clang_build/src/src/cclang/projects/cclang/common_clang.cpp:19:
/dockerws/workspace/build/igc/IGC/BiFModule/clang_build/src/src/cclang/projects/cclang/common_clang.h:20:10: fatal error: 'CL/cl.h' file not found
#include "CL/cl.h"
^~~~~~~~~
1 error generated.
projects/cclang/CMakeFiles/opencl_clang.dir/build.make:132: recipe for target 'projects/cclang/CMakeFiles/opencl_clang.dir/common_clang.cpp.o' failed
make[5]: *** [projects/cclang/CMakeFiles/opencl_clang.dir/common_clang.cpp.o] Error 1
CMakeFiles/Makefile2:6408: recipe for target 'projects/cclang/CMakeFiles/opencl_clang.dir/all' failed
make[4]: *** [projects/cclang/CMakeFiles/opencl_clang.dir/all] Error 2
Makefile:151: recipe for target 'all' failed
make[3]: *** [all] Error 2
igc/IGC/BiFModule/clang_build/CMakeFiles/cclang.dir/build.make:223: recipe for target 'igc/IGC/BiFModule/clang_build/src/src/cclang-stamp/cclang-build' failed
make[2]: *** [igc/IGC/BiFModule/clang_build/src/src/cclang-stamp/cclang-build] Error 2
CMakeFiles/Makefile2:10770: recipe for target 'igc/IGC/BiFModule/clang_build/CMakeFiles/cclang.dir/all' failed
make[1]: *** [igc/IGC/BiFModule/clang_build/CMakeFiles/cclang.dir/all] Error 2
Makefile:151: recipe for target 'all' failed
make: *** [all] Error 2