/usr/bin/ld: skipping incompatible /usr/local/lib/libIL.so when searching for -lIL
/usr/bin/ld: skipping incompatible /usr/local/lib/libIL.a when searching for -lIL
/usr/bin/ld: cannot find -lIL
clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation)