cmake_minimum_required(VERSION 2.8)

project(FlatBuffers)

# NOTE: Code coverage only works on Linux & OSX.
option(FLATBUFFERS_CODE_COVERAGE "Enable the code coverage build option." OFF)
option(FLATBUFFERS_BUILD_TESTS "Enable the build of tests and samples." ON)
option(FLATBUFFERS_INSTALL "Enable the installation of targets." ON)
option(FLATBUFFERS_BUILD_FLATC "Enable the build of the flatbuffers compiler" ON)

if(NOT FLATBUFFERS_BUILD_FLATC AND FLATBUFFERS_BUILD_TESTS)
    message(WARNING
    "Cannot build tests without building the compiler. Tests will be disabled.")
    set(FLATBUFFERS_BUILD_TESTS OFF)
endif()

set(FlatBuffers_Compiler_SRCS
  include/flatbuffers/flatbuffers.h
  include/flatbuffers/idl.h
  include/flatbuffers/util.h
  src/idl_parser.cpp
  src/idl_gen_cpp.cpp
  src/idl_gen_general.cpp
  src/idl_gen_go.cpp
  src/idl_gen_text.cpp
  src/idl_gen_fbs.cpp
  src/flatc.cpp
)

set(FlatBuffers_Tests_SRCS
  include/flatbuffers/flatbuffers.h
  include/flatbuffers/idl.h
  include/flatbuffers/util.h
  src/idl_parser.cpp
  src/idl_gen_text.cpp
  src/idl_gen_fbs.cpp
  tests/test.cpp
  # file generate by running compiler on tests/monster_test.fbs
  ${CMAKE_CURRENT_BINARY_DIR}/tests/monster_test_generated.h
)

set(FlatBuffers_Sample_Binary_SRCS
  include/flatbuffers/flatbuffers.h
  samples/sample_binary.cpp
  # file generated by running compiler on samples/monster.fbs
  ${CMAKE_CURRENT_BINARY_DIR}/samples/monster_generated.h
)

set(FlatBuffers_Sample_Text_SRCS
  include/flatbuffers/flatbuffers.h
  include/flatbuffers/idl.h
  include/flatbuffers/util.h
  src/idl_parser.cpp
  src/idl_gen_text.cpp
  samples/sample_text.cpp
  # file generated by running compiler on samples/monster.fbs
  ${CMAKE_CURRENT_BINARY_DIR}/samples/monster_generated.h
)

# source_group(Compiler FILES ${FlatBuffers_Compiler_SRCS})
# source_group(Tests FILES ${FlatBuffers_Tests_SRCS})

if(APPLE)
  set(CMAKE_CXX_FLAGS
    "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++ -Wall -pedantic -Werror -Wextra")
elseif(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
  set(CMAKE_CXX_FLAGS
    "${CMAKE_CXX_FLAGS} -std=c++0x -Wall -pedantic -Werror -Wextra")
endif()

if(FLATBUFFERS_CODE_COVERAGE)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -fprofile-arcs -ftest-coverage")
  set(CMAKE_EXE_LINKER_FLAGS
      "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
endif()

include_directories(include)

if(FLATBUFFERS_BUILD_FLATC)
add_executable(flatc ${FlatBuffers_Compiler_SRCS})
endif()

function(compile_flatbuffers_schema_to_cpp SRC_FBS)
  get_filename_component(SRC_FBS_DIR ${SRC_FBS} PATH)
  string(REGEX REPLACE "\\.fbs$" "_generated.h" GEN_HEADER ${SRC_FBS})
  add_custom_command(
    OUTPUT ${GEN_HEADER}
    COMMAND flatc -c -o "${SRC_FBS_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}/${SRC_FBS}"
    DEPENDS flatc)
endfunction()

if(FLATBUFFERS_BUILD_TESTS)
  compile_flatbuffers_schema_to_cpp(tests/monster_test.fbs)
  include_directories(${CMAKE_CURRENT_BINARY_DIR}/tests)
  add_executable(flattests ${FlatBuffers_Tests_SRCS})

  compile_flatbuffers_schema_to_cpp(samples/monster.fbs)
  include_directories(${CMAKE_CURRENT_BINARY_DIR}/samples)
  add_executable(flatsamplebinary ${FlatBuffers_Sample_Binary_SRCS})
  add_executable(flatsampletext ${FlatBuffers_Sample_Text_SRCS})
endif()

if(FLATBUFFERS_INSTALL)
  install(DIRECTORY include/flatbuffers DESTINATION include)
  if(FLATBUFFERS_BUILD_FLATC)
    install(TARGETS flatc DESTINATION bin)
  endif()
endif()

if(FLATBUFFERS_BUILD_TESTS)
  enable_testing()

  file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/tests" DESTINATION
       "${CMAKE_CURRENT_BINARY_DIR}")
  add_test(NAME flattests COMMAND flattests)
endif()