cmake_minimum_required (VERSION 2.8)

project (pfaedle)

if (CMAKE_BUILD_TYPE)
	string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE)
endif()
if (CMAKE_BUILD_TYPE STREQUAL "DEBUG")
	set(CPPLINT "${CMAKE_SOURCE_DIR}/cpplint.py")
	include(cmake/cpplint.cmake)
endif()

set(CPPLINT_PROJECT_ROOT "src")

enable_testing()

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")
set(EXECUTABLE_OUTPUT_PATH "${CMAKE_SOURCE_DIR}/build")

find_package(Osmium REQUIRED COMPONENTS pbf xml io)

find_package(OpenMP)
if (OPENMP_FOUND)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()


# set compiler flags, see http://stackoverflow.com/questions/7724569/debug-vs-release-in-cmake
if(OPENMP_FOUND)
	set(CMAKE_CXX_FLAGS            "-fopenmp -Ofast -fno-signed-zeros -fno-trapping-math -Wall -Wno-format-extra-args -Wextra -Wformat-nonliteral -Wformat-security -Wformat=2 -Wextra -Wno-implicit-fallthrough -pedantic")
else()
	message(WARNING "Configuring without OpenMP!")
	set(CMAKE_CXX_FLAGS            "-Ofast -fno-signed-zeros -fno-trapping-math -Wall -Wno-format-extra-args -Wextra -Wformat-nonliteral -Wformat-security -Wformat=2 -Wextra -Wno-implicit-fallthrough -pedantic")
endif()
set(CMAKE_CXX_FLAGS_DEBUG          "-Og -g -DLOGLEVEL=3 -DPFAEDLE_DBG=1")
set(CMAKE_CXX_FLAGS_MINSIZEREL     "${CMAKE_CXX_FLAGS} -DLOGLEVEL=2")
set(CMAKE_CXX_FLAGS_RELEASE        "${CMAKE_CXX_FLAGS} -DLOGLEVEL=2")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS} -g -DLOGLEVEL=3")

# export compile commands to tools like clang
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

# Compiler-specific C++11 activation.
if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
	execute_process(
		COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
	if ((GCC_VERSION VERSION_GREATER 4.8 OR GCC_VERSION VERSION_EQUAL 4.8))
		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
	else ()
		message(FATAL_ERROR "${PROJECT_NAME} requires g++ 4.8 or greater!")
	endif ()
elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
	#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -std=c++11")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
else ()
	message(FATAL_ERROR "Your C++ compiler does not support C++11.")
endif ()

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DPFAEDLE_PRECISION=${PFAEDLE_PRECISION}")

# http://brianmilco.blogspot.de/2012/11/cmake-automatically-use-git-tags-as.html
include(GetGitRevisionDescription)
git_get_tag(VERSION_GIT)
get_git_is_dirty(VERSION_GIT_IS_DIRTY)
if ("${VERSION_GIT_IS_DIRTY}" STREQUAL "")
	set(VERSION_GIT_FULL "${VERSION_GIT}")
else()
	set(VERSION_GIT_FULL "${VERSION_GIT}-${VERSION_GIT_IS_DIRTY}")
endif()

# Download submodules if needed

if(NOT EXISTS ${CMAKE_SOURCE_DIR}/src/configparser/.git OR NOT EXISTS ${CMAKE_SOURCE_DIR}/src/cppgtfs/.git OR NOT EXISTS ${CMAKE_SOURCE_DIR}/src/xml/.git)
    execute_process(
        COMMAND git submodule update --init --recursive
    )
endif()

add_subdirectory(src)

# tests

add_test("utilTest" utilTest)

# custom eval target

add_custom_target(
	eval
	COMMAND make
	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}//eval
)

# handles install target
install(
	FILES pfaedle.cfg DESTINATION etc/${PROJECT_NAME} COMPONENT config PERMISSIONS OWNER_READ GROUP_READ WORLD_READ
)

install(
	FILES build/pfaedle DESTINATION bin
	PERMISSIONS OWNER_EXECUTE GROUP_EXECUTE WORLD_EXECUTE COMPONENT binaries
)