cmake_minimum_required(VERSION 2.8.7)
project(caveproductions)
INCLUDE(FindPkgConfig)

PKG_SEARCH_MODULE(SDL2 REQUIRED sdl2)
PKG_SEARCH_MODULE(SDL2IMAGE REQUIRED SDL2_image>=2.0.0)
PKG_SEARCH_MODULE(LUA5.2 REQUIRED lua5.2)
PKG_SEARCH_MODULE(Box2D REQUIRED box2d)

INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIRS} ${SDL2IMAGE_INCLUDE_DIRS})

#-------------------------------------------------------------------------------
# options
#-------------------------------------------------------------------------------

option(NETWORKING "Enable networking" ON)
option(UNITTESTS "Builds with unittests" ON)
option(TOOLS "Builds with tools" ON)
option(VERBOSE "Print debug information" OFF)
option(COVERAGE "Compile with test coverage" OFF)
option(USE_CCACHE "Use ccache" ON)
option(CAVEEXPRESS "Build caveexpress" ON)
option(CAVEPACKER "Build cavepacker" ON)
option(MINIRACER "Build miniracer" OFF)
option(SANITIZER "Build with sanitizer support if available" ON)

#-------------------------------------------------------------------------------
# end options
#-------------------------------------------------------------------------------

if (NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Compile Type" FORCE)
endif()
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Debug Release MinSizeRel RelWithDebInfo)

if (${CMAKE_BUILD_TYPE} MATCHES "Debug")
	set(RELEASE False)
else()
	set(RELEASE True)
endif()

set(ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR} CACHE STRING "Root dir")
message(STATUS "Place binaries in ${ROOT_DIR}")
# First for the generic no-config case (e.g. with mingw)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${ROOT_DIR})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}/lib)

# Second, for multi-config builds (e.g. msvc)
foreach(OUTPUTCONFIG ${CMAKE_CONFIGURATION_TYPES})
	string(TOUPPER ${OUTPUTCONFIG} OUTPUTCONFIG)
	set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${ROOT_DIR})
	set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}/lib)
	set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}/lib)
endforeach()
set(DEFAULT_LUAC_EXECUTABLE luac)
set(CP_CMAKE_DIR ${PROJECT_SOURCE_DIR}/cmake)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CP_CMAKE_DIR})
set(CMAKE_VERBOSE_MAKEFILE ${VERBOSE})
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if (${CMAKE_EXTRA_GENERATOR} MATCHES "Eclipse CDT4")
	message(STATUS "Generate eclipse projects")
	set(CMAKE_ECLIPSE_GENERATE_LINKED_RESOURCES OFF)
	set(CMAKE_ECLIPSE_GENERATE_SOURCE_PROJECT ON)
	set(CMAKE_ECLIPSE_VERSION "4.3" CACHE STRING "Eclipse version")
	set(CMAKE_CXX_COMPILER_ARG1 "-std=c++11" CACHE STRING "C++ version for Eclipse")
endif()

include(${CP_CMAKE_DIR}/macros.cmake)

if (COVERAGE)
	if ((CP_GCC OR CP_CLANG) AND NOT RELEASE)
		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O0 -fprofile-arcs -ftest-coverage")
		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O0 -fprofile-arcs -ftest-coverage")
	elseif (RELEASE)
		message(WARNING "Skip coverage, you attempt to compile in release mode")
	else()
		message(WARNING "Skip coverage, you don't compile with gcc or clang")
	endif()
endif()

cp_message("ROOT_DIR: ${ROOT_DIR}")
cp_message("CMAKE_MODULE_PATH: ${CMAKE_MODULE_PATH}")
cp_message("PROJECT_SOURCE_DIR: ${PROJECT_SOURCE_DIR}")
message(STATUS "CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
message(STATUS "CMAKE_HOST_SYSTEM_NAME: ${CMAKE_HOST_SYSTEM_NAME}")

#-------------------------------------------------------------------------------
# variables
#-------------------------------------------------------------------------------

if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
	set(WINDOWS 1)
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Android")
	set(LINUX 1)
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
	set(DARWIN 1)
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
	set(LINUX 1)
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Emscripten")
	set(EMSCRIPTEN 1)
else()
	message(WARNING "Unknown host system: ${CMAKE_SYSTEM_NAME}. Default to linux")
	set(LINUX 1)
endif()

include(${CP_CMAKE_DIR}/pack.cmake)
include(CPack)

# on mac it e.g. finds the gui launcher - this is not what we want - find a proper way to handle this
if (NOT ${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin")
	find_host_program(TEXTUREPACKER_BIN NAMES TexturePacker)
	if (${TEXTUREPACKER_BIN})
		message(STATUS "Found TexturePacker: ${TEXTUREPACKER_BIN}")
	else()
		message(STATUS "Could not find TexturePacker")
	endif()
endif()
if (NOT CMAKE_TOOLCHAIN_FILE)
	if (WINDOWS)
		include(${CP_CMAKE_DIR}/toolchains/windows-toolchain.cmake)
	elseif (DARWIN)
		include(${CP_CMAKE_DIR}/toolchains/darwin-toolchain.cmake)
	else()
		include(${CP_CMAKE_DIR}/toolchains/linux-toolchain.cmake)
	endif()
endif()

if (ANDROID)
	include(${CP_CMAKE_DIR}/android.cmake)
elseif (IOS)
	include(${CP_CMAKE_DIR}/ios.cmake)
elseif (DARWIN)
	include(${CP_CMAKE_DIR}/darwin.cmake)
elseif (WINDOWS)
#	include(${CP_CMAKE_DIR}/windows.cmake)
elseif (NACL)
	include(${CP_CMAKE_DIR}/nacl.cmake)
elseif (EMSCRIPTEN)
	include(${CP_CMAKE_DIR}/emscripten.cmake)
endif()

if (PKGDATADIR)
	add_definitions(-DPKGDATADIR="${PKGDATADIR}")
	message(STATUS "You specified a package data dir - but this means, you have to rebuild for each game.")
	message(STATUS "If you don't do this, you get all the data of all the games in the same directory.")
	message(STATUS "See the available options and disable all but one game for each build.")
endif()

if (NOT NETWORKING)
	add_definitions(-DNONETWORK=1)
endif()

if (NOT CMAKE_BUILD_TYPE)
	if (RELEASE)
		set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Compile Type" FORCE)
	else()
		set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Compile Type" FORCE)
	endif()
	set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Debug Release)
endif()

find_host_program(CCACHE "ccache")
if (CCACHE)
	if (USE_CCACHE)
		message(STATUS "Using ccache")
		set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE})
		set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE})
	endif()
else()
	message(STATUS "ccache not found")
endif()

configure_file(${ROOT_DIR}/src/config.h.in ${CMAKE_BINARY_DIR}/cp-config.h)
include_directories(${CMAKE_BINARY_DIR})

include_directories(src)
include_directories(src/modules)

# TODO move into lib cmakefiles
if (LUA5.2_FOUND)
	add_definitions(-DHAVE_LUA_H)
endif()
if (UNITTESTS)
	enable_testing()
endif()
add_subdirectory(src/modules)
if (CAVEPACKER)
	add_subdirectory(src/cavepacker)
endif()
if (CAVEEXPRESS)
	add_subdirectory(src/caveexpress)
endif()
if (MINIRACER)
	add_subdirectory(src/miniracer)
endif()
if (UNITTESTS)
	add_subdirectory(src/tests)
endif()