### Check if OSX can compile with ucontext (with gcc 4.[1-5] it is broken)
if(APPLE)
if(APPLE_NEED_GCC_VERSION GREATER COMPILER_C_VERSION_MAJOR_MINOR)
### Check if OSX can compile with ucontext (with gcc 4.[1-5] it is broken)
if(APPLE)
if(APPLE_NEED_GCC_VERSION GREATER COMPILER_C_VERSION_MAJOR_MINOR)