CMakeLists.txt

# We need 3.8 for set(CMAKE_CXX_STANDARD 17)
cmake_minimum_required(VERSION 3.8)

set(VERSION "0.0.4")
set(BUILD_ID 38)
set(REFS " (HEAD -> master)")

# Enable c++17
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

#set(CMAKE_CXX_STANDARD 11)
#set(CMAKE_CXX_STANDARD_REQUIRED ON)

set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(CMAKE_SKIP_INSTALL_RULES OFF)
set(CMAKE_SKIP_PACKAGE_ALL_DEPENDENCY ON)
set(CMAKE_SUPPRESS_REGENERATION ON)

if(DO_TESTS)
  message(STATUS "BUILD TESTS: enabled")
  enable_testing()
else()
  message(STATUS "BUILD TESTS: disabled")
endif()

project(lithe)

include_directories(include src external "${CMAKE_BINARY_DIR}/version")
if(APPLE)
  include_directories(SYSTEM /usr/include/malloc)
  enable_language(ASM)
endif()

if(MSVC)
  include_directories(src/Platform/Windows)
elseif(APPLE)
  include_directories(src/Platform/OSX)
else()
  include_directories(src/Platform/Linux)
endif()

set(STATIC ${MSVC} CACHE BOOL "Link libraries statically")

if(MSVC)
  add_definitions("/bigobj /MP /W3 /GS- /D_CRT_SECURE_NO_WARNINGS /wd4996 /wd4345 /D_WIN32_WINNT=0x0600 /DWIN32_LEAN_AND_MEAN /DGTEST_HAS_TR1_TUPLE=0 /D_VARIADIC_MAX=8 /D__SSE4_1__")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10485760")
  if(STATIC)
    foreach(VAR CMAKE_C_FLAGS_DEBUG CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_RELWITHDEBINFO CMAKE_CXX_FLAGS_RELWITHDEBINFO CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
      string(REPLACE "/MD" "/MT" ${VAR} "${${VAR}}")
    endforeach()
  endif()
  include_directories(SYSTEM src/platform/msc)
else()
  if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
    # This option has no effect in glibc version less than 2.20.
    # Since glibc 2.20 _BSD_SOURCE is deprecated, this macro is recomended instead
    add_definitions("-D_DEFAULT_SOURCE -D_GNU_SOURCE")
  endif()
  set(ARCH native CACHE STRING "CPU to build for: -march value or default")
  if("${ARCH}" STREQUAL "default")
    set(ARCH_FLAG "")
  else()
    set(ARCH_FLAG "-march=x86-64")
  endif()
  set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wundef -Wvla -Wwrite-strings -Wno-error=extra -Wno-error=unused-function -Wno-error=deprecated-declarations -Wno-error=sign-compare -Wno-error=strict-aliasing -Wno-error=type-limits -Wno-unused-parameter -Wno-error=unused-variable -Wno-error=undef -Wno-error=uninitialized -Wno-error=unused-result")
  if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
    set(WARNINGS "${WARNINGS} -Wno-error=mismatched-tags -Wno-error=null-conversion -Wno-overloaded-shift-op-parentheses -Wno-error=shift-count-overflow -Wno-error=tautological-constant-out-of-range-compare -Wno-error=unused-private-field -Wno-error=unneeded-internal-declaration -Wno-error=unused-function")
  else()
    set(WARNINGS "${WARNINGS} -Wlogical-op -Wno-error=maybe-uninitialized -Wno-error=clobbered -Wno-error=unused-but-set-variable")
  endif()
  if(MINGW)
    set(WARNINGS "${WARNINGS} -Wno-error=unused-value")
    set(MINGW_FLAG "-DWIN32_LEAN_AND_MEAN")
    include_directories(SYSTEM src/platform/mingw)
  else()
    set(MINGW_FLAG "")
  endif()
  if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_C_COMPILER_VERSION VERSION_LESS 5.1))
    set(WARNINGS "${WARNINGS} -Wno-error=odr")
  endif()

  set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes")
  set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${MINGW_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG} -maes")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17 ${MINGW_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG} -maes")

  if(APPLE AND CMAKE_C_COMPILER_ID STREQUAL "GNU")
    # Need to build against libc++ instead of libstc++ on apple
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdinc++ -I/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1 -nodefaultlibs -lc++ -lc++abi -lm -lc -lgcc -lgcc_eh")
  endif()

  if(NOT APPLE)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
  endif()

  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
    set(DEBUG_FLAGS "-g3 -Og")
  else()
    set(DEBUG_FLAGS "-g3 -O0")
  endif()
  set(RELEASE_FLAGS "-g3 -O0")

endif()

if(STATIC)
  set(Boost_USE_STATIC_LIBS ON)
  set(Boost_USE_STATIC_RUNTIME ON)
endif()

#set(Boost_DEBUG on)
find_package(Boost 1.55 REQUIRED COMPONENTS system filesystem thread date_time chrono regex serialization program_options)
include_directories(SYSTEM ${Boost_INCLUDE_DIRS})

if(MINGW)
  set(Boost_LIBRARIES "${Boost_LIBRARIES};ws2_32;mswsock")
elseif(APPLE)
  set(Boost_LIBRARIES "${Boost_LIBRARIES}")
elseif(NOT MSVC)
  set(Boost_LIBRARIES "${Boost_LIBRARIES};rt")
endif()

set(COMMIT_ID_IN_VERSION ON CACHE BOOL "Include commit ID in version")
file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/version")
if (NOT COMMIT_ID_IN_VERSION)
  set(VERSION "${VERSION}-unknown")
  configure_file("src/version.h.in" "version/version.h")
  add_custom_target(version ALL)
elseif(DEFINED BUILD_ID)
  string(REPLACE "." "\\." VERSION_RE "${VERSION}")
  if(NOT REFS MATCHES "(\\(|, )tag: v${VERSION_RE}(\\)|, )")
    set(VERSION "${VERSION}-g${BUILD_ID}")
  endif()
  configure_file("src/version.h.in" "version/version.h")
  add_custom_target(version ALL)
else()
  find_package(Git QUIET)
  if(Git_FOUND OR GIT_FOUND)
    message(STATUS "Found Git: ${GIT_EXECUTABLE}")
    add_custom_target(version ALL "${CMAKE_COMMAND}" "-D" "VERSION=${VERSION}" "-D" "GIT=${GIT_EXECUTABLE}" "-D" "TO=${CMAKE_BINARY_DIR}/version/version.h" "-P" "src/version.cmake" WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
  else()
    message(STATUS "WARNING: Git was not found!")
    set(VERSION "${VERSION}-unknown")
    configure_file("src/version.h.in" "version/version.h")
    add_custom_target(version ALL)
  endif()
endif()

add_subdirectory(external)
add_subdirectory(src)