cmake_minimum_required(VERSION 3.0)
project(cpp-main)

# setting the needed compile flags
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")

# append the cmake search path to include the cmake-files to help build the
# project in lib/GraphLib/cmake_modules
set(CMAKE_MODULE_PATH
  ${CMAKE_MODULE_PATH}
  "${CMAKE_SOURCE_DIR}/lib/GraphLib/cmake_modules"
)

# these two lines sets the variables starting with MathGL and FLTK used by
# add_executable and include_directories.
find_package(MathGL REQUIRED)
find_package(FLTK REQUIRED)

# these two lines turn off building of tests and examples of the GraphLib
# library building of tests and examples is rarely done while developing. See
# ./lib/GraphLib/CMakeLists.txt:L23 to see how these affect the library.
set(BUILD_EXAMPLES off)
set(ENABLE_TESTING off)

# this line includes the library GraphLib in lib/GraphLib
add_subdirectory("./lib/GraphLib")

include_directories(
  ${MathGL_INCLUDE_DIRS}
  ${FLTK_INCLUDE_DIR}

  # The following line might also be ${PROJECT_SOURCE_DIR}/lib/GraphLib/graphlib
  # If your examples say #include <graphlib/gl> you keep the next value as is.
  # If your examples is #include <gl> you change it to how its mentioned before.
  ${PROJECT_SOURCE_DIR}/lib/GraphLib
)

add_executable(cpp-main main.cpp ${MATHGL_LIBRARIES} ${FLTK_LIBRARIES})


# final notes