project(proteus)
cmake_minimum_required(VERSION 2.6)

if(NOT CMAKE_INSTALL_PREFIX)
    set(CMAKE_INSTALL_PREFIX /usr)
endif(NOT CMAKE_INSTALL_PREFIX)

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)
link_directories(${CMAKE_CURRENT_BINARY_DIR}/lib)

# Define the absolute path to the images so we load them properly.
if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
    add_definitions(-DIMAGE_PATH="${CMAKE_CURRENT_SOURCE_DIR}/images/sprites")
    add_definitions(-Wall -pedantic)
else(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
    add_definitions(-DIMAGE_PATH="${CMAKE_INSTALL_PREFIX}/images/sprites")
endif(${CMAKE_BUILD_TYPE} STREQUAL "Debug")

add_subdirectory(lib)
add_subdirectory(src)

# Modify these to be proper install paths down the line.
install(DIRECTORY doc DESTINATION ${CMAKE_INSTALL_PREFIX})
install(DIRECTORY images DESTINATION ${CMAKE_INSTALL_PREFIX})

# uninstall target
configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake"
    IMMEDIATE @ONLY)

add_custom_target(uninstall
    "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake")

# Only build tests if we are debugging.
if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
    # Unit test running.
    enable_testing()
    add_subdirectory(test)
endif(${CMAKE_BUILD_TYPE} STREQUAL "Debug")

# Documentation
# check if doxygen is even installed
find_package(Doxygen)
if (DOXYGEN_FOUND STREQUAL "NO")
    message(FATAL_ERROR "Doxygen not found. Please get a copy http://www.doxygen.org")
endif (DOXYGEN_FOUND STREQUAL "NO")

# prepare doxygen configuration file
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

# add doxygen as target
add_custom_target(doxygen ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

# cleanup $build/api-doc on "make clean"
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES api-doc)

# add doxygen as dependency to doc-target
get_target_property(DOC_TARGET doc TYPE)
if(NOT DOC_TARGET)
    add_custom_target(doc)
endif()
add_dependencies(doc doxygen)

# install HTML API documentation and manual pages
set(DOC_PATH "share/doc/${CPACK_PACKAGE_NAME}-${VERSION}")
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/api-doc/html DESTINATION ${DOC_PATH})

# install man pages into packages, scope is now
# project root..
install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/api-doc/man/man3 DESTINATION share/man/man3/)