######################################################################################
# Project settings
######################################################################################

cmake_minimum_required(VERSION 3.10 FATAL_ERROR)

project("clutchlog"
    VERSION 0.11.1
    DESCRIPTION "A logging system which targets versatile debugging")

enable_language(CXX) # C++
set(CMAKE_CXX_STANDARD 17)

if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -std=c++17 -lstdc++fs")
    if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0 AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
        link_libraries(stdc++fs)
        add_compile_definitions(FSEXPERIMENTAL)
    endif()
endif()


######################################################################################
# Configurable user settings
######################################################################################

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic")

# put binaries in the build directory
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

# Dump used compiler flags.
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

option(WITH_CLUTCHLOG "Define WITH_CLUTCHLOG, whatever the build type." OFF)
if(WITH_CLUTCHLOG)
    add_definitions(-DWITH_CLUTCHLOG)
endif()

# Do not build documentation by default.
option(BUILD_DOCUMENTATION "Create and install the HTML based API documentation (requires Doxygen)" OFF)

######################################################################################
# Start building
######################################################################################

# Doxygen (iff documentation is asked).
if(BUILD_DOCUMENTATION)
    find_package(Doxygen REQUIRED)

    set(DOXYGEN_CONFIG_DIR ${CMAKE_SOURCE_DIR}/doxygen)
    set(doxyfile_in ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/doxyfile.cmake)
    set(doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
    configure_file(${doxyfile_in} ${doxyfile} @ONLY)

    add_custom_target( doc
        COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
        COMMENT "Generating API documentation with Doxygen"
        VERBATIM )
endif()

enable_testing()
add_subdirectory(tests)