# TODO: sensible minimum CMake version
cmake_minimum_required(VERSION 3.3)
project(nextpnr)
# List of families to build
set(FAMILIES dummy ice40)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_FLAGS_DEBUG "-Wall -fPIC -ggdb")
set(CMAKE_CXX_FLAGS_RELEASE "-Wall -fPIC -O3 -g")
set(CMAKE_DEFIN)
# List of Boost libraries to include
set(boost_libs filesystem thread program_options)
# TODO: sensible minimum Python version
find_package(PythonInterp 3.5 REQUIRED)
find_package(PythonLibs 3.5 REQUIRED)

find_package(Boost REQUIRED COMPONENTS ${boost_libs})

# Find the Qt5 libraries
find_package(Qt5 COMPONENTS Core Widgets OpenGL REQUIRED)
find_package(OpenGL REQUIRED)

# Get the latest abbreviated commit hash of the working branch
execute_process(
  COMMAND git log -1 --format=%h
  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
  OUTPUT_VARIABLE GIT_COMMIT_HASH
  OUTPUT_STRIP_TRAILING_WHITESPACE
)

add_subdirectory(3rdparty/googletest/googletest generated/3rdparty/googletest EXCLUDE_FROM_ALL)
enable_testing()

add_subdirectory(3rdparty/QtPropertyBrowser generated/3rdparty/QtPropertyBrowser)

add_definitions("-DGIT_COMMIT_HASH=${GIT_COMMIT_HASH}")
configure_file(
    ${CMAKE_CURRENT_SOURCE_DIR}/common/version.h.in ${CMAKE_CURRENT_BINARY_DIR}/generated/version.h
)

# Find Boost::Python of a suitable version in a cross-platform way
# Some distributions (Arch) call it libboost_python3, others such as Ubuntu
# call it libboost_python35. In the latter case we must consider all minor versions
# Original source: https://github.com/BVLC/caffe/blob/master/cmake/Dependencies.cmake#L148
set(version ${PYTHONLIBS_VERSION_STRING})

STRING(REGEX REPLACE "[^0-9]" "" boost_py_version ${version})
find_package(Boost COMPONENTS "python-py${boost_py_version}" ${boost_libs})
set(Boost_PYTHON_FOUND ${Boost_PYTHON-PY${boost_py_version}_FOUND})

while (NOT "${version}" STREQUAL "" AND NOT Boost_PYTHON_FOUND)
    STRING(REGEX REPLACE "([0-9.]+).[0-9]+" "\\1" version ${version})

    STRING(REGEX REPLACE "[^0-9]" "" boost_py_version ${version})
    find_package(Boost COMPONENTS "python-py${boost_py_version}" ${boost_libs})
    set(Boost_PYTHON_FOUND ${Boost_PYTHON-PY${boost_py_version}_FOUND})

    STRING(REGEX MATCHALL "([0-9.]+).[0-9]+" has_more_version ${version})
    if ("${has_more_version}" STREQUAL "")
        break()
    endif ()
endwhile ()

if (NOT Boost_PYTHON_FOUND)
    find_package(Boost COMPONENTS python3 ${boost_libs})
    if ("${Boost_LIBRARIES}" MATCHES ".*(python|PYTHON).*" )
        set(Boost_PYTHON_FOUND TRUE)
    endif ()
endif ()

if (NOT Boost_PYTHON_FOUND)
    STRING(REGEX REPLACE "([0-9]+\\.[0-9]+).*" "\\1" gentoo_version ${PYTHONLIBS_VERSION_STRING})
    find_package(Boost COMPONENTS python-${gentoo_version} ${boost_libs})
    if ("${Boost_LIBRARIES}" MATCHES ".*(python|PYTHON).*" )
        set(Boost_PYTHON_FOUND TRUE)
    endif ()
endif ()

if (NOT Boost_PYTHON_FOUND )
    message( FATAL_ERROR "No version of Boost::Python 3.x could be found.")
endif ()

include_directories(common/ frontend/json ${Boost_INCLUDE_DIRS} ${PYTHON_INCLUDE_DIRS})
aux_source_directory(common/ COMMON_SRC_FILES)
aux_source_directory(frontend/json/ JSON_PARSER_FILES)
set(COMMON_FILES ${COMMON_SRC_FILES} ${JSON_PARSER_FILES})
set(CMAKE_BUILD_TYPE Release)

if(MINGW)
    add_definitions("-Wa,-mbig-obj")
endif(MINGW)

foreach (family ${FAMILIES})
    string(TOUPPER ${family} ufamily)
    aux_source_directory(${family}/ ${ufamily}_FILES)
    aux_source_directory(tests/${family}/ ${ufamily}_TEST_FILES)

    add_subdirectory(gui generated/gui/${family})

    # Add the CLI binary target
    add_executable(nextpnr-${family} ${COMMON_FILES} ${${ufamily}_FILES} )
    install(TARGETS nextpnr-${family} RUNTIME DESTINATION bin)
    target_compile_definitions(nextpnr-${family} PRIVATE MAIN_EXECUTABLE)

    # Add the importable Python module target
    PYTHON_ADD_MODULE(nextpnrpy_${family} EXCLUDE_FROM_ALL ${COMMON_FILES} ${${ufamily}_FILES})
    # Add any new per-architecture targets here

    add_executable(nextpnr-${family}-test EXCLUDE_FROM_ALL ${${ufamily}_TEST_FILES} ${COMMON_FILES} ${${ufamily}_FILES})
    target_link_libraries(nextpnr-${family}-test PRIVATE gtest_main)
    add_test(${family}-test ${CMAKE_CURRENT_BINARY_DIR}/nextpnr-${family}-test)

    # Set ${family_targets} to the list of targets being build for this family
    set(family_targets nextpnr-${family} nextpnrpy_${family} nextpnr-${family}-test)
    # Include the family-specific CMakeFile
    include(${family}/family.cmake)
    foreach (target ${family_targets})
        # Include family-specific source files to all family targets and set defines appropriately
        target_include_directories(${target} PRIVATE ${family}/ generated/ gui/${family}/ gui/)
        target_compile_definitions(${target} PRIVATE NEXTPNR_NAMESPACE=nextpnr_${family} ARCH_${ufamily} ARCHNAME=${family} QT_NO_KEYWORDS)
        target_link_libraries(${target} LINK_PUBLIC gui_${family} ${Boost_LIBRARIES} ${PYTHON_LIBRARIES} ${GUI_LIBRARY_FILES_${ufamily}})
    endforeach (target)
endforeach (family)

file(GLOB_RECURSE CLANGFORMAT_FILES *.cc *.h)
string(REGEX REPLACE "[^;]*/ice40/chipdbs/chipdb-[^;]*.cc" "" CLANGFORMAT_FILES "${CLANGFORMAT_FILES}")
string(REGEX REPLACE "[^;]*/3rdparty[^;]*" "" CLANGFORMAT_FILES "${CLANGFORMAT_FILES}")
string(REGEX REPLACE "[^;]*/generated[^;]*" "" CLANGFORMAT_FILES "${CLANGFORMAT_FILES}")

add_custom_target(
    clangformat
    COMMAND clang-format
    -style=file
    -i
    ${CLANGFORMAT_FILES}
)