squawk/CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(squawk VERSION 0.2.3 LANGUAGES CXX)

cmake_policy(SET CMP0076 NEW)
cmake_policy(SET CMP0077 NEW)
cmake_policy(SET CMP0079 NEW)
cmake_policy(SET CMP0167 NEW)
set(CMAKE_CXX_STANDARD 17)

set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTORCC ON)

include(GNUInstallDirs)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")

set(WIN32_FLAG "")
set(MACOSX_BUNDLE_FLAG "")
if (CMAKE_BUILD_TYPE STREQUAL "Release")
  if (WIN32)
    set(WIN32_FLAG WIN32)
  endif(WIN32)
  if (APPLE)
    set(MACOSX_BUNDLE_FLAG MACOSX_BUNDLE)
  endif(APPLE)
endif()

add_executable(squawk ${WIN32_FLAG} ${MACOSX_BUNDLE_FLAG})
target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR})

option(SYSTEM_QXMPP "Use system qxmpp lib" ON)
option(SYSTEM_LMDBAL "Use system lmdbal lib" ON)
option(WITH_KWALLET "Build KWallet support module" ON)
option(WITH_KIO "Build KIO support module" ON)
option(WITH_KCONFIG "Build KConfig support module" ON)
option(WITH_OMEMO "Build OMEMO support module" OFF)   #it should be off by default untill I sort the problems out

# Dependencies
## Qt
if (NOT DEFINED QT_VERSION_MAJOR)
  find_package(QT NAMES Qt6 Qt5 CONFIG REQUIRED COMPONENTS Widgets DBus Gui Xml Network Core)
else ()
  find_package(Qt${QT_VERSION_MAJOR} CONFIG REQUIRED COMPONENTS Widgets DBus Gui Xml Network Core)
endif()

find_package(Boost COMPONENTS)

target_include_directories(squawk PRIVATE ${Boost_INCLUDE_DIRS})

## OMEMO
if (WITH_OMEMO)
  find_package(PkgConfig)
  if (PKG_CONFIG_FOUND)
    pkg_check_modules(OMEMO libomemo-c)
    if (OMEMO_FOUND)
      target_compile_definitions(squawk PRIVATE WITH_OMEMO)
      message("Building with support of OMEMO")
    else ()
      message("libomemo-c package wasn't found, trying to build without OMEMO support")
      set(WITH_OMEMO OFF)
    endif ()
  else ()
    message("PKG_CONFIG module wasn't found, can not check libomemo-c support, trying to build without OMEMO support")
    set(WITH_OMEMO OFF)
  endif ()
endif ()

## KIO
if (WITH_KIO)
  find_package(KF${QT_VERSION_MAJOR}KIO CONFIG)

  if (NOT KF${QT_VERSION_MAJOR}KIO_FOUND)
    set(WITH_KIO OFF)
    message("KIO package wasn't found, KIO support modules wouldn't be built")
  else ()
    target_compile_definitions(squawk PRIVATE WITH_KIO)
    message("Building with support of KIO")
  endif ()
endif ()

## KWallet
if (WITH_KWALLET)
  find_package(KF${QT_VERSION_MAJOR}Wallet CONFIG)

  if (NOT KF${QT_VERSION_MAJOR}Wallet_FOUND)
    set(WITH_KWALLET OFF)
    message("KWallet package wasn't found, KWallet support module wouldn't be built")
  else ()
    target_compile_definitions(squawk PRIVATE WITH_KWALLET)
    message("Building with support of KWallet")
  endif ()
endif ()

## KConfig
if (WITH_KCONFIG)
  find_package(KF${QT_VERSION_MAJOR}Config CONFIG)
  if (NOT KF${QT_VERSION_MAJOR}Config_FOUND)
    set(WITH_KCONFIG OFF)
    message("KConfig package wasn't found, KConfig support modules wouldn't be built")
  else()
    find_package(KF${QT_VERSION_MAJOR}ConfigWidgets CONFIG)
    if (NOT KF${QT_VERSION_MAJOR}ConfigWidgets_FOUND)
      set(WITH_KCONFIG OFF)
      message("KConfigWidgets package wasn't found, KConfigWidgets support modules wouldn't be built")
    else()
      target_compile_definitions(squawk PRIVATE WITH_KCONFIG)
      message("Building with support of KConfig")
      message("Building with support of KConfigWidgets")
    endif()
  endif()
endif()

## QXmpp
if (SYSTEM_QXMPP)
  if (WITH_OMEMO)
    find_package(QXmppQt${QT_VERSION_MAJOR} CONFIG COMPONENTS Omemo)
  else ()
    find_package(QXmppQt${QT_VERSION_MAJOR} CONFIG)
  endif ()

  if (NOT QXmppQt${QT_VERSION_MAJOR}_FOUND)
    set(SYSTEM_QXMPP OFF)
    message("QXmpp package wasn't found, trying to build with bundled QXmpp")
  else ()
    message("Building with system QXmpp")
  endif ()
endif ()                #it's endif() + if() and not else() because I want it to have a fallback behaviour
if (NOT SYSTEM_QXMPP)   #we can fail finding system QXmpp and this way we'll check bundled before failing completely
  message("Building with bundled QXmpp")

  target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/base)
  target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/client)
  target_include_directories(squawk PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src)

  if (WITH_OMEMO)
    target_include_directories(squawk PRIVATE ${CMAKE_SOURCE_DIR}/external/qxmpp/src/omemo)
    target_include_directories(squawk PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src/omemo)
    set(BUILD_OMEMO ON)
    set(BUILD_TESTS OFF)
  else ()
    set(BUILD_OMEMO OFF)
  endif ()
  add_subdirectory(external/qxmpp)
  add_library(QXmpp::QXmpp ALIAS QXmppQt${QT_VERSION_MAJOR})
  if (WITH_OMEMO)
    target_include_directories(QXmppOmemoQt${QT_VERSION_MAJOR} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/external/qxmpp/src)
    add_library(QXmpp::Omemo ALIAS QXmppOmemoQt${QT_VERSION_MAJOR})
  endif ()
endif ()

## LMDBAL
if (SYSTEM_LMDBAL)
  find_package(lmdbalqt${QT_VERSION_MAJOR})
  if (NOT lmdbalqt${QT_VERSION_MAJOR}_FOUND)
    set(SYSTEM_LMDBAL OFF)
    message("LMDBAL package wasn't found, trying to build with bundled LMDBAL")
  else ()
    message("Building with system LMDBAL")
  endif ()
else()
  message("Building with bundled LMDBAL")
  set(BUILD_STATIC ON)
  add_subdirectory(external/lmdbal)
  add_library(LMDBALQT${QT_VERSION_MAJOR}::LMDBALQT${QT_VERSION_MAJOR} ALIAS LMDBAL)
endif()

find_package(OpenSSL REQUIRED)

## Linking
target_link_libraries(squawk
  PRIVATE
  Qt${QT_VERSION_MAJOR}::Core
  Qt${QT_VERSION_MAJOR}::Widgets
  Qt${QT_VERSION_MAJOR}::DBus
  Qt${QT_VERSION_MAJOR}::Network
  Qt${QT_VERSION_MAJOR}::Gui
  Qt${QT_VERSION_MAJOR}::Xml
  LMDBALQT${QT_VERSION_MAJOR}::LMDBALQT${QT_VERSION_MAJOR}
  OpenSSL::Crypto
  QXmpp::QXmpp
)

if (WITH_OMEMO)
  target_link_libraries(squawk PRIVATE QXmpp::Omemo)
endif ()

## Link thread libraries on Linux
if(UNIX AND NOT APPLE)
  set(THREADS_PREFER_PTHREAD_FLAG ON)
  find_package(Threads REQUIRED)
  target_link_libraries(squawk PRIVATE Threads::Threads)
endif()

## Build type
if (NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Debug)
endif ()

message("Build type: ${CMAKE_BUILD_TYPE}")

if(CMAKE_COMPILER_IS_GNUCXX)
  set (COMPILE_OPTIONS -fno-sized-deallocation)   # for eliminating _ZdlPvm
  if (CMAKE_BUILD_TYPE STREQUAL "Release")
    list(APPEND COMPILE_OPTIONS -O3)
  endif()
  if (CMAKE_BUILD_TYPE STREQUAL Debug)
    list(APPEND COMPILE_OPTIONS -g)
    list(APPEND COMPILE_OPTIONS -Wall)
    list(APPEND COMPILE_OPTIONS -Wextra)
  endif()

  message("Compilation options: " ${COMPILE_OPTIONS})
  target_compile_options(squawk PRIVATE ${COMPILE_OPTIONS})
endif(CMAKE_COMPILER_IS_GNUCXX)

# I am not really sure about this solution
# This should enable plugins to be found in path like /usr/lib/squawk instead of just /usr/lib
set(PLUGIN_PATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/squawk")
add_compile_definitions(PLUGIN_PATH="${PLUGIN_PATH}")

add_subdirectory(main)
add_subdirectory(core)
add_subdirectory(packaging)
add_subdirectory(plugins)
add_subdirectory(resources)
add_subdirectory(shared)
add_subdirectory(translations)
add_subdirectory(ui)

## Install the executable
install(TARGETS squawk DESTINATION ${CMAKE_INSTALL_BINDIR})
install(FILES README.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)
install(FILES LICENSE.md DESTINATION ${CMAKE_INSTALL_DATADIR}/macaw.me/squawk)

if (CMAKE_BUILD_TYPE STREQUAL "Release")
  if (APPLE)
    add_custom_command(TARGET squawk POST_BUILD COMMENT "Running macdeployqt..."
      COMMAND "${Qt${QT_VERSION_MAJOR}Widgets_DIR}/../../../bin/macdeployqt" "${CMAKE_CURRENT_BINARY_DIR}/squawk.app"
    )
  endif(APPLE)
endif()