CMakeLists.txt

cmake_minimum_required(VERSION 2.8.12.2)

#if(NOT SHARPLANG_TARGET)
#  message(FATAL_ERROR "SHARPLANG_TARGET is not defined")
#endif()

# Detect existence of 32 or 64 bit compiler
if(WIN32)
  if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/deps/llvm/build_x64")
    set(SHARPLANG_MINGW "mingw64")
    set(SHARPLANG_MINGW_CPU "x86_64")
    set(LLVM_BUILD_SUBFOLDER "build_x64")
  elseif(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/deps/llvm/build_x32")
    set(SHARPLANG_MINGW "mingw32")
    set(SHARPLANG_MINGW_CPU "i686")
    set(LLVM_BUILD_SUBFOLDER "build_x32")
  else()
    message(FATAL_ERROR "Could not find a valid LLVM/Clang build (should be located under deps/llvm/build_x64 or deps/llvm/build_x32)")
  endif()
else()
  set(LLVM_BUILD_SUBFOLDER "build")
endif()

# Redefine few things to use LLVM compiler instead
if(WIN32)
  set(LLVM_BUILD_PATH "${CMAKE_CURRENT_SOURCE_DIR}/deps/llvm/${LLVM_BUILD_SUBFOLDER}/RelWithDebInfo/bin")
  find_program(CMAKE_MAKE_PROGRAM NAMES mingw32-make PATHS "${CMAKE_CURRENT_SOURCE_DIR}/deps/${SHARPLANG_MINGW}/bin" NO_DEFAULT_PATH)
  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/deps/${SHARPLANG_MINGW}/${SHARPLANG_MINGW_CPU}-w64-mingw32/include)
  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/deps/${SHARPLANG_MINGW}/${SHARPLANG_MINGW_CPU}-w64-mingw32/include/c++)
  include_directories(${CMAKE_CURRENT_SOURCE_DIR}/deps/${SHARPLANG_MINGW}/${SHARPLANG_MINGW_CPU}-w64-mingw32/include/c++/${SHARPLANG_MINGW_CPU}-w64-mingw32)
  if (NOT SHARPLANG_TARGET)
    set(SHARPLANG_TARGET   "${SHARPLANG_MINGW_CPU}-pc-windows-gnu")
  endif()
else()
  set(LLVM_BUILD_SUBFOLDER "build") # on Linux, x86/x64 matches host, so no need to have separate folders
  set(LLVM_BUILD_PATH "${CMAKE_CURRENT_SOURCE_DIR}/deps/llvm/${LLVM_BUILD_SUBFOLDER}/bin")
endif()

find_program(CMAKE_C_COMPILER NAMES clang PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)
find_program(CMAKE_CXX_COMPILER NAMES clang++ PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)
find_program(CMAKE_LINKER NAMES llvm-link PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)
find_program(CMAKE_CXX_LINKER NAMES llvm-link PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)
find_program(CMAKE_C_LINK_EXECUTABLE NAMES llvm-link PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)
find_program(CMAKE_CXX_LINK_EXECUTABLE NAMES llvm-link PATHS "${LLVM_BUILD_PATH}" NO_DEFAULT_PATH)

set(SHARPLANG_BUILD_SUBDIR "${CMAKE_BINARY_DIR}/../../lib")

# Set default compilation flags
set(CMAKE_BITCODE_FLAGS   "${CMAKE_BITCODE_FLAGS} -emit-llvm ")

if (NOT SHARPLANG_TARGET)
  execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpmachine OUTPUT_VARIABLE SHARPLANG_TARGET)
  string ( REGEX REPLACE "[\r\n]" "" SHARPLANG_TARGET ${SHARPLANG_TARGET} )
  message("SHARPLANG_TARGET was not specified, auto-detected: ${SHARPLANG_TARGET}")
endif()

set(CMAKE_BITCODE_FLAGS   "${CMAKE_BITCODE_FLAGS} --target=${SHARPLANG_TARGET}")

# Set bitcode output directory
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${SHARPLANG_BUILD_SUBDIR}/runtime/${SHARPLANG_TARGET})

set(CMAKE_C_COMPILER_ID "GNU")
set(CMAKE_C_COMPILER_ID_RUN TRUE)
set(CMAKE_C_COMPILER_FORCED TRUE)
set(CMAKE_CXX_COMPILER_ID "GNU")
set(CMAKE_CXX_COMPILER_ID_RUN TRUE)
set(CMAKE_CXX_COMPILER_FORCED TRUE)
set(CMAKE_COMPILER_IS_GNUCC 1)
set(CMAKE_COMPILER_IS_GNUCXX 1)

# Not sure why those flags need to be defined after project
set(CMAKE_C_ARCHIVE_CREATE "${CMAKE_C_LINK_EXECUTABLE} -o <TARGET> <LINK_FLAGS> <OBJECTS>")
set(CMAKE_CXX_ARCHIVE_CREATE "${CMAKE_CXX_LINK_EXECUTABLE} -o <TARGET> <LINK_FLAGS> <OBJECTS>")
set(CMAKE_C_ARCHIVE_FINISH "")
set(CMAKE_CXX_ARCHIVE_FINISH "")

project(SharpLang)

set(CMAKE_C_OUTPUT_EXTENSION ".bc")
set(CMAKE_CXX_OUTPUT_EXTENSION ".bc")
set(CMAKE_STATIC_LIBRARY_SUFFIX ".bc")
set(CMAKE_STATIC_LIBRARY_PREFIX "")

add_subdirectory(src)