How to make Cmake to include gl/GL.h?

Hello I am new to Linux development, and just recently switched from Windows MSVS c++ development to Linux-based vim+cmake+gcc. I am using Debian Sid(unstable). I am trying to get code on subdivision, I have gotten from a friend to run. I am not really used to Cmake, and googling for help often is troublesome, since every other dist seems to have different packages and different solutions. cmake_minimum_required (VERSION 2.6) project (Benchmark) Find_Package(Qt4 REQUIRED) Include(${QT_USE_FILE}) find_package(OpenGL REQUIRED) include_directories(${OPENGL_INCLUDE_DIR}) set(CORELIBS ${QT_LIBRARY} ${OPENGL_LIBRARY} ) File(GLOB SRC ".cpp") File(GLOB HEAD ".h") add_executable(Benchmark ${SRC}) target_link_libraries(Benchmark ${CORELIBS}) That is my current Cmake, I want to use find_package(), GLOB etc to make it as dynamic as possible, and not use absolute paths. I get the following error when trying to build. subdivbench/Matrix4x4.h:4:19: fatal error: gl/GL.h: No such file or directory #include gl/GL.h compilation terminated. make[2]: [CMakeFiles/Benchmark.dir/Matrix4x4.cpp.o] Error 1 make[1]: [CMakeFiles/Benchmark.dir/all] Error 2 The code is fairly irrelevant, since it's working perfectly in windows, all I need to do is to make the include etc work for Linux.