glew provides CMake targets:

  # Legacy CMake find module
  find_package(GLEW REQUIRED)
  target_link_libraries(main PRIVATE GLEW::GLEW)

  # Modern CMake config package
  find_package(GLEW CONFIG REQUIRED)
  target_link_libraries(main PRIVATE GLEW::GLEW)

glew provides pkg-config modules:

  # The OpenGL Extension Wrangler library
  glew