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c++cmakeglew

GL/glew.h: No such file or directory in glew.c

When I try to compile my program I get this error

C:\...\CLionProjects\Radix\vendors\glew-2.1.0\src\glew.c:34:10: fatal error: GL/glew.h: No such file or directory
 #include <GL/glew.h>
          ^~~~~~~~~~~

The error is in the library code, what am I doing wrong here?

My project structure looks like this:

Radix
|- Radix-core
   |- cpp code..
|- vendors
   |- CMakeLists.txt
   |- glew-2.1.0
   |- Other libs..
- CMakeLists.txt

CMakeLists.txt (Just glew parts)

add_subdirectory(vendors)

add_definitions(-DTW_STATIC -DTW_NO_LIB_PRAGMA -DTW_NO_DIRECT3D -DGLEW_STATIC -D_CRT_SECURE_NO_WARNINGS)

# Including GLEW
include_directories(vendors/glew-2.1.0/include)
set(ALL_LIBS opengl32 glfw GLEW_210)

target_link_libraries(Radix ${ALL_LIBS})

vendors/CMakeLists.txt (Just glew parts)

add_definitions(-DTW_STATIC -DTW_NO_LIB_PRAGMA -DTW_NO_DIRECT3D -DGLEW_STATIC -D_CRT_SECURE_NO_WARNINGS)

### GLEW ###
set(GLEW_HEADERS)
set(GLEW_SOURCE glew-2.1.0/src/glew.c)
set(GLEW_INCLUDE glew-2.1.0/include)

add_library(GLEW_210 ${GLEW_SOURCE} ${GLEW_INCLUDE})
target_link_libraries(GLEW_210 ${OPENGL_LIBRARY} ${EXTRA_LIBS})
Solution

  • Adding your include directory to the source files for GLEW_210 does nothing. Add it as a PUBLIC include directory instead, so the compilation of glew.c also has access to glew headers:

    target_include_directories(GLEW_210 PUBLIC glew-2.1.0/include)

    This also propagates the include directory to any targets that link with GLEW_210, so you can then drop the include_directories statement in your main CMakeLists.txt