# cmake based build of Subsurface

# Uncomment his to see all commands cmake actually executes
# set(CMAKE_VERBOSE_MAKEFILE ON)

cmake_minimum_required(VERSION 3.1)
project(Subsurface)

# don't process generated files - this is new in 3.10
if (POLICY CMP0071)
	cmake_policy(SET CMP0071 OLD)
endif()

# support Packagename_ROOT environment variable
if (POLICY CMP0074)
  cmake_policy(SET CMP0074 NEW) # CMake 3.12
endif ()

# global settings

set(CMAKE_MODULE_PATH
	${${PROJECT_NAME}_SOURCE_DIR}/cmake/Modules
	${CMAKE_MODULE_PATH}
)

set(CMAKE_AUTOMOC ON)
include(MacroOutOfSourceBuild)
MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
    "We don't support building in source, please create a build folder elsewhere and remember to run git clean -xdf to remove temporary files created by CMake."
)

#Option for profiling
option(SUBSURFACE_PROFILING_BUILD "enable profiling of Subsurface binary" OFF)

#Options regarding usage of pkgconfig
option(LIBGIT2_FROM_PKGCONFIG "use pkg-config to retrieve libgit2" OFF)
option(LIBDC_FROM_PKGCONFIG "use pkg-config to retrieve libdivecomputer" OFF)
option(LIBGRANTLEE_FROM_PKGCONFIG "use pkg-config to retrieve grantlee" OFF)

#Library Handling
option(FORCE_LIBSSH "force linking with libssh to workaround libgit2 bug" ON)
option(LIBGIT2_DYNAMIC "search for libgit2.so before libgit2.a" OFF)

#Options regarding disabling parts of subsurface.
option(NO_DOCS "disable the docs" OFF)
option(NO_PRINTING "disable the printing support" OFF)
option(NO_USERMANUAL "don't include a viewer for the user manual" OFF)

#Options regarding enabling parts of subsurface
option(BTSUPPORT "enable support for QtBluetooth (requires Qt5.4 or newer)" ON)
option(FTDISUPPORT "enable support for libftdi based serial" OFF)

# Options regarding What should we build on subsurface
option(MAKE_TESTS "Make the tests" ON)

SET(SUBSURFACE_TARGET_EXECUTABLE "DesktopExecutable" CACHE STRING "The type of application, DesktopExecutable or MobileExecutable")
LIST(APPEND SUBSURFACE_ACCEPTED_EXECUTABLES  "DesktopExecutable" "MobileExecutable")
SET_PROPERTY(CACHE SUBSURFACE_TARGET_EXECUTABLE PROPERTY STRINGS ${SUBSURFACE_ACCEPTED_EXECUTABLES})

#verify if Platform is correct and warn on wxit with example.
list (FIND SUBSURFACE_ACCEPTED_EXECUTABLES ${SUBSURFACE_TARGET_EXECUTABLE}  _index)
if (_index EQUAL -1)
  message(FATAL_ERROR "Requested platform not supported, please use one of the following:
    ${SUBSURFACE_ACCEPTED_EXECUTABLES}

    inputted value was: ${SUBSURFACE_TARGET_EXECUTABLE}

    Example: -DSUBSURFACE_TARGET_EXECUTABLE=DesktopExecutable")
endif()

# SUBSURFACE_SOURCE may be used in subdirectories (tests)
set(SUBSURFACE_SOURCE ${CMAKE_SOURCE_DIR})
add_definitions(-DSUBSURFACE_SOURCE="${SUBSURFACE_SOURCE}")

set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED TRUE)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)

#
# TODO: This Compilation part should go on the Target specific CMake.
#
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-inconsistent-missing-override")
	if ((CMAKE_SYSTEM_NAME MATCHES "Darwin") AND
	   ((CMAKE_SYSTEM_VERSION MATCHES "11.4.") OR
	    (CMAKE_OSX_DEPLOYMENT_TARGET MATCHES "10.7") OR
	    (CMAKE_OSX_DEPLOYMENT_TARGET MATCHES "10.8")))
		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
	endif()
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-inconsistent-missing-override")
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
	# Warn about possible float conversion errors
	# Use NOT VERSION_LESS since VERSION_GREATER_EQUAL is not available
	# in currently used cmake version.
	if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.9.0")
		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wfloat-conversion")
		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wfloat-conversion")
	endif()

elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
  # using Intel C++
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
  # using Visual Studio C++
endif()

# set up profiling
if (SUBSURFACE_PROFILING_BUILD)
	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pg")
	SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
	SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -pg")
endif()

# every compiler understands -Wall
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")

# by detault optimize with -O2 even for debug builds
set (GCC_OPTIMIZATION_FLAGS "-O2" CACHE STRING "GCC optimization flags")
message (STATUS "GCC optimization flags: " ${GCC_OPTIMIZATION_FLAGS})
set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${GCC_OPTIMIZATION_FLAGS}")
set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${GCC_OPTIMIZATION_FLAGS}")

# pkgconfig for required libraries
find_package(PkgConfig)
include(pkgconfig_helper)

# The 'HandleFindXXX' are special libraries that subsurface needs
# to find and configure in a few different ways because of a few
# developers that prefer pkg-config over CMake, so we try to make
# everyone happy. It also sets some variables for each library, so
# if you think a module miss anything, take a look on the specific
# module file.
include(HandleFindGit2)
include(HandleFindLibDiveComputer)
if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
        include(HandleFindGrantlee)
	include(HandleUserManual)
endif()
include(HandleFtdiSupport)
include(HandleVersionGeneration)
include(RunOnBuildDir)
include(cmake_variables_helper)

if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
	include_directories(${CMAKE_OSX_SYSROOT}/usr/include/libxml2)
	set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -lxml2 -lxslt -lsqlite3)
else()
	pkg_config_library(LIBXML libxml-2.0 REQUIRED)
	pkg_config_library(LIBSQLITE3 sqlite3 REQUIRED)
	pkg_config_library(LIBXSLT libxslt REQUIRED)
endif()
pkg_config_library(LIBZIP libzip REQUIRED)
pkg_config_library(LIBUSB libusb-1.0 QUIET)

include_directories(.
	${CMAKE_CURRENT_BINARY_DIR}
	${CMAKE_BINARY_DIR}
	${CMAKE_BINARY_DIR}/desktop-widgets
)

# Project Target specific configuration should go here,
# if the configuration is too big or would disrupt the normal code flux,
# move it somewhere else (another file) and include it.
if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
	if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
		set(SUBSURFACE_TARGET Subsurface)
	else()
		set(SUBSURFACE_TARGET subsurface)
	endif()
	list(APPEND QT_EXTRA_COMPONENTS QuickWidgets)
	remove_definitions(-DSUBSURFACE_MOBILE)
elseif (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
	if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
		set(SUBSURFACE_TARGET Subsurface-mobile)
	else()
		set(SUBSURFACE_TARGET subsurface-mobile)
	endif()
	list(APPEND QT_EXTRA_COMPONENTS QuickControls2)
	add_definitions(-DSUBSURFACE_MOBILE)

	# add definition to seperate mobile for devices and for desktop
	add_definitions(-DSUBSURFACE_MOBILE_DESKTOP)

	message(STATUS "Building Subsurface-mobile requires BT support")
	set(BTSUPPORT ON)
endif()

if(ANDROID)
	set(NO_PRINTING ON)
	list(APPEND QT_EXTRA_COMPONENTS AndroidExtras)
	set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -llog)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
        # add pthread to the end of the library list on Linux
        # this is only needed on Ubuntu
        # but shouldn't hurt on other Linux versions
        # in some builds we appear to be missing libz for some strange reason...
	# Add ssh2 at the end for openSUSE builds (for recent cmake?)
        set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -lssh2 -lz -lpthread)

        # Test for ARM processor (Raspberry Pi) and add libGLESv2 if found
        if (CMAKE_SYSTEM_PROCESSOR STREQUAL "armv7l" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "armv6l")
                message (STATUS "Found ARM processor. Adding libGLESv2")
                set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -lGLESv2)
                set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
        endif()
elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
        execute_process(
                COMMAND sh scripts/get-version linux
                WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
                OUTPUT_VARIABLE SSRF_VERSION_STRING
                OUTPUT_STRIP_TRAILING_WHITESPACE
        )
        find_library(APP_SERVICES_LIBRARY ApplicationServices)
        find_library(HID_LIB HidApi)
        set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} ${HID_LIB})
        set(EXTRA_LIBS ${APP_SERVICES_LIBRARY})
        set(ICON_FILE ${CMAKE_SOURCE_DIR}/packaging/macosx/Subsurface.icns)
	if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
		set(MACOSX_BUNDLE_INFO_STRING "Subsurface-mobile")
		set(MACOSX_BUNDLE_BUNDLE_NAME "Subsurface-mobile")
	else()
		set(MACOSX_BUNDLE_INFO_STRING "Subsurface")
		set(MACOSX_BUNDLE_BUNDLE_NAME "Subsurface")
	endif()
	set(MACOSX_BUNDLE_ICON_FILE Subsurface.icns)
	set(MACOSX_BUNDLE_GUI_IDENTIFIER "org.subsurface-divelog")
        set(MACOSX_BUNDLE_BUNDLE_VERSION "${SSRF_VERSION_STRING}")
        set(MACOSX_BUNDLE_SHORT_VERSION_STRING "${SSRF_VERSION_STRING}")
        set(MACOSX_BUNDLE_LONG_VERSION_STRING "${SSRF_VERSION_STRING}")
        set(MACOSX_BUNDLE_COPYRIGHT "Linus Torvalds, Dirk Hohndel, Tomaz Canabrava, and others")
        set_source_files_properties(${ICON_FILE} PROPERTIES MACOSX_PACKAGE_LOCATION "Resources")
        set(SUBSURFACE_PKG MACOSX_BUNDLE ${ICON_FILE})
elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
        set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -lwsock32 -lws2_32)
        remove_definitions(-DUNICODE)
        add_definitions(-mwindows -D_WIN32)
endif()

if(BTSUPPORT)
	set(BLESUPPORT ON)
	list(APPEND QT_EXTRA_COMPONENTS Bluetooth)
	add_definitions(-DBT_SUPPORT)
	add_definitions(-DBLE_SUPPORT)
endif()

if(ANDROID)
	# when building for Android, the toolchain file requires all cmake modules
	# to be inside the CMAKE_FIND_ROOT_PATH - which prevents cmake from finding
	# our Qt installation. This is ugly, but it works.
	set(CMAKE_FIND_ROOT_PATH "/;${CMAKE_FIND_ROOT_PATH}")
endif()
set(QT_FIND_COMPONENTS Core Concurrent Widgets Network Svg Positioning Quick Location ${QT_EXTRA_COMPONENTS})
if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
	find_package(Qt5 5.9.1 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
else()
	# Kirigami 5.62 and newer require at least Qt 5.12
	find_package(Qt5 5.12 REQUIRED COMPONENTS ${QT_FIND_COMPONENTS} LinguistTools Test QuickTest)
endif()
foreach(_QT_COMPONENT ${QT_FIND_COMPONENTS})
	list(APPEND QT_LIBRARIES Qt5::${_QT_COMPONENT})
endforeach()
set(QT_TEST_LIBRARIES ${QT_LIBRARIES} Qt5::Test Qt5::QuickTest)

#set up the subsurface_link_libraries variable
set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} ${LIBDIVECOMPUTER_LIBRARIES} ${LIBGIT2_LIBRARIES} ${LIBUSB_LIBRARIES})
qt5_add_resources(SUBSURFACE_RESOURCES subsurface.qrc map-widget/qml/map-widget.qrc)

# hack to build successfully on LGTM
if(DEFINED ENV{LGTM_SRC})
	set(SUBSURFACE_LINK_LIBRARIES ${SUBSURFACE_LINK_LIBRARIES} -lgssapi_krb5 -lhttp_parser)
endif()

# include translations
add_subdirectory(translations)
add_subdirectory(core)
add_subdirectory(qt-models)
add_subdirectory(commands)
add_subdirectory(profile-widget)
add_subdirectory(map-widget)
add_subdirectory(mobile-widgets)
add_subdirectory(backend-shared)

if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
	add_subdirectory(desktop-widgets)
endif()

# create the executables
if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
	set(MOBILE_SRC
		subsurface-mobile-main.cpp
		subsurface-helper.cpp
	)
	include_directories(${CMAKE_SOURCE_DIR}/mobile-widgets/qml/kirigami/src/libkirigami)
	add_definitions(-DKIRIGAMI_BUILD_TYPE_STATIC)
	qt5_add_resources(MOBILE_RESOURCES mobile-widgets/qml/mobile-resources.qrc)
	qt5_add_resources(MOBILE_RESOURCES mobile-widgets/qml/kirigami/kirigami.qrc)
	# When building the mobile application in Android, link it and Qt will do the rest, when doing the mobile application on Desktop, create an executable.
	if(ANDROID)
		qt5_add_resources(MOBILE_RESOURCES android-mobile/font.qrc)
		add_library(${SUBSURFACE_TARGET} SHARED ${SUBSURFACE_PKG} ${MOBILE_SRC} ${SUBSURFACE_RESOURCES} ${MOBILE_RESOURCES})
	else()
		# the following is split across two commands since in cmake 3.12 this would result
		# in a non-sensical "no sources given to target" error if done all as one set of
		# arguments to the add_executable() call
		add_executable(${SUBSURFACE_TARGET} ${SUBSURFACE_PKG} ${SUBSURFACE_RESOURCES})
		target_sources(${SUBSURFACE_TARGET} PUBLIC ${MOBILE_SRC} ${MOBILE_RESOURCES})
	endif()
	target_link_libraries(
		${SUBSURFACE_TARGET}
		subsurface_mobile
		subsurface_profile
		subsurface_mapwidget
		subsurface_backend_shared
		subsurface_models_mobile
		subsurface_corelib
		${SUBSURFACE_LINK_LIBRARIES}
	)
elseif (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable")
	set(SUBSURFACE_APP
		subsurface-desktop-main.cpp
		subsurface-helper.cpp
	)
	source_group("Subsurface App" FILES ${SUBSURFACE_APP})
        if(ANDROID)
                add_library(${SUBSURFACE_TARGET} SHARED ${SUBSURFACE_PKG} ${SUBSURFACE_APP} ${SUBSURFACE_RESOURCES})
        else()
                add_executable(${SUBSURFACE_TARGET} MACOSX_BUNDLE WIN32 ${SUBSURFACE_PKG} ${SUBSURFACE_APP} ${SUBSURFACE_RESOURCES})
        endif()

	target_link_libraries(
		${SUBSURFACE_TARGET}
		subsurface_generated_ui
		subsurface_interface
		subsurface_profile
		subsurface_statistics
		subsurface_mapwidget
		subsurface_backend_shared
		subsurface_models_desktop
		subsurface_commands_desktop
		subsurface_corelib
		${SUBSURFACE_LINK_LIBRARIES}
	)
	add_dependencies(subsurface_desktop_preferences subsurface_generated_ui)
	add_dependencies(subsurface_statistics subsurface_generated_ui)
	add_dependencies(subsurface_interface subsurface_generated_ui)
	add_dependencies(subsurface_profile subsurface_generated_ui)
	add_dependencies(subsurface_models_desktop subsurface_generated_ui)
	add_dependencies(subsurface_generated_ui version)
endif()

add_dependencies(subsurface_corelib version)

# add platform specific actions
if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
	file(WRITE ${CMAKE_BINARY_DIR}/qt.conf "[Paths]
Prefix=.
")
endif()

# build an automated html exporter
add_executable(export-html EXCLUDE_FROM_ALL export-html.cpp ${SUBSURFACE_RESOURCES})
target_link_libraries(export-html subsurface_corelib ${SUBSURFACE_LINK_LIBRARIES})

# install Subsurface
# first some variables with files that need installing
set(DOCFILES
	README.md
	ReleaseNotes/ReleaseNotes.txt
	SupportedDivecomputers.txt
	${CMAKE_BINARY_DIR}/Documentation/user-manual.html
	${CMAKE_BINARY_DIR}/Documentation/user-manual_es.html
	${CMAKE_BINARY_DIR}/Documentation/user-manual_fr.html
	${CMAKE_BINARY_DIR}/Documentation/user-manual_ru.html
)

# add all the translations that we may need
FILE(STRINGS "subsurface_enabled_translations" QTTRANSLATIONS_BASE)

if(NOT DEFINED QT_TRANSLATION_DIR OR QT_TRANSLATION_DIR STREQUAL "")
	set(QT_TRANSLATION_DIR ${Qt5Core_DIR}/../../../translations)
endif()
set(QTTRANSLATIONS "")
foreach(QTTRANSLATION ${QTTRANSLATIONS_BASE})
	if (QTTRANSLATION AND EXISTS ${QT_TRANSLATION_DIR}/${QTTRANSLATION})
		set(QTTRANSLATIONS ${QTTRANSLATIONS} ${QT_TRANSLATION_DIR}/${QTTRANSLATION})
	endif()
endforeach()

# now for each platform the install instructions
if(ANDROID)
	# Android template directory
	include(${QT_ANDROID_CMAKE})
	if((DEFINED ENV{KEYSTORE}) AND (DEFINED ENV{KEYSTORE_PASSWORD}))
		add_qt_android_apk(${SUBSURFACE_TARGET}.apk ${SUBSURFACE_TARGET}
			PACKAGE_SOURCES ${CMAKE_BINARY_DIR}/android-mobile DEPENDS ${ANDROID_NATIVE_LIBSSL} ${ANDROID_NATIVE_LIBCRYPT}
			KEYSTORE $ENV{KEYSTORE} Subsurface-mobile KEYSTORE_PASSWORD $ENV{KEYSTORE_PASSWORD}
		)
		message(STATUS "KEYSTORE=$ENV{KEYSTORE} KEYSTORE_PASSWORD=$ENV{KEYSTORE_PASSWORD}")
	else()
		add_qt_android_apk(${SUBSURFACE_TARGET}.apk ${SUBSURFACE_TARGET}
			PACKAGE_SOURCES ${CMAKE_BINARY_DIR}/android-mobile DEPENDS ${ANDROID_NATIVE_LIBSSL} ${ANDROID_NATIVE_LIBCRYPT}
		)
		message(STATUS "no KEYSTORE")
	endif()
elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
	set(APP_BUNDLE_DIR "${SUBSURFACE_TARGET}.app")
	set(EXTRA_MACDEPLOY_ARGS "-qmldir=${APP_BUNDLE_DIR}/Contents/Resources/qml ")
	set(MACDEPLOY_ARGS "${EXTRA_MACDEPLOY_ARGS}-executable=${APP_BUNDLE_DIR}/Contents/MacOS/${SUBSURFACE_TARGET} -always-overwrite -libpath=${CMAKE_SOURCE_DIR}/../install-root/lib")
	set(RESOURCEDIR ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources)
	set(PLUGINDIR ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/PlugIns)
	install(DIRECTORY Documentation/images DESTINATION ${RESOURCEDIR}/share/Documentation)
	install(FILES ${DOCFILES} DESTINATION ${RESOURCEDIR}/share/Documentation)
	install(DIRECTORY theme DESTINATION ${RESOURCEDIR})
	install(DIRECTORY printing_templates DESTINATION ${RESOURCEDIR})
	install(FILES ${TRANSLATIONS} DESTINATION ${RESOURCEDIR}/translations)
	install(FILES ${QTTRANSLATIONS} DESTINATION ${RESOURCEDIR}/translations)
	install(FILES ${CMAKE_SOURCE_DIR}/gpl-2.0.txt DESTINATION ${RESOURCEDIR})
	install(CODE "execute_process(COMMAND mkdir -p ${RESOURCEDIR}/qml)")
	# this is a HACK
	if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "DesktopExecutable" AND NOT NO_PRINTING)
		install(DIRECTORY ${Grantlee5_DIR}/../../grantlee DESTINATION ${PLUGINDIR})
	endif()
	install(CODE "execute_process(COMMAND mkdir -p ${PLUGINDIR}/geoservices)")
	install(CODE "execute_process(COMMAND cp ${_qt5Core_install_prefix}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
	install(CODE "execute_process(COMMAND cp ${CMAKE_SOURCE_DIR}/../install-root/${_qt5Core_install_prefix}/plugins/geoservices/libqtgeoservices_googlemaps.dylib ${PLUGINDIR}/geoservices ERROR_QUIET)")
	# this is a hack - but I don't know how else to find the macdeployqt program if it's not in the PATH
	string(REPLACE moc macdeployqt MACDEPLOYQT ${QT_MOC_EXECUTABLE})
	install(CODE "execute_process(COMMAND ${MACDEPLOYQT} ${APP_BUNDLE_DIR} -no-strip ${MACDEPLOY_ARGS})")
	# and another hack to get the QML Components in the right place
	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQuick.2 ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtLocation ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
	install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
	if(NOT Qt5Core_VERSION VERSION_LESS 5.11.0)
		# and with Qt 5.11 we need another library that isn't copied by macdeployqt
		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/lib/QtPositioningQuick.framework ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Frameworks)")
	endif()
	if (SUBSURFACE_TARGET_EXECUTABLE MATCHES "MobileExecutable")
		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQuick ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtGraphicalEffects ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtQml ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
		install(CODE "execute_process(COMMAND cp -a ${_qt5Core_install_prefix}/qml/QtPositioning ${CMAKE_BINARY_DIR}/${APP_BUNDLE_DIR}/Contents/Resources/qml)")
	endif()
elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
	if (CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
		if(NOT DEFINED OBJCOPY)
			set(OBJCOPY i686-w64-mingw32.shared-objcopy)
		endif()
		find_program(OBJCOPY_FOUND ${OBJCOPY})
		if (OBJCOPY_FOUND)
			message(STATUS "Build type is 'RelWithDebInfo'. Creating debug symbols in a separate file.")
			add_custom_command(TARGET ${SUBSURFACE_TARGET} POST_BUILD
				COMMAND ${OBJCOPY} --only-keep-debug ${SUBSURFACE_TARGET}.exe ${SUBSURFACE_TARGET}.exe.debug
				COMMAND ${OBJCOPY} --strip-debug --strip-unneeded ${SUBSURFACE_TARGET}.exe
				COMMAND ${OBJCOPY} --add-gnu-debuglink=${SUBSURFACE_TARGET}.exe.debug ${SUBSURFACE_TARGET}.exe
			)
		endif()
	endif()

	# Windows bundling rules
	# We don't have a helpful tool like macdeployqt for Windows, so we hardcode
	# which libs we need.
	# "make install", copies everything into a staging area
	# "make installer", uses makensis to create an installer executable
	set(WINDOWSSTAGING ${CMAKE_BINARY_DIR}/staging)
	install(DIRECTORY Documentation/images DESTINATION ${WINDOWSSTAGING}/Documentation)
	install(FILES ${DOCFILES} DESTINATION ${WINDOWSSTAGING}/Documentation)
	install(DIRECTORY theme DESTINATION ${WINDOWSSTAGING})
	install(DIRECTORY printing_templates DESTINATION ${WINDOWSSTAGING})
	install(FILES ${TRANSLATIONS} DESTINATION ${WINDOWSSTAGING}/translations)
	install(FILES ${QTTRANSLATIONS} DESTINATION ${WINDOWSSTAGING}/translations)
	install(FILES ${CMAKE_SOURCE_DIR}/gpl-2.0.txt ${CMAKE_SOURCE_DIR}/packaging/windows/subsurface.ico DESTINATION ${WINDOWSSTAGING})
	install(TARGETS ${SUBSURFACE_TARGET} DESTINATION ${WINDOWSSTAGING})
	install(FILES ${CMAKE_BINARY_DIR}/qt.conf DESTINATION ${WINDOWSSTAGING})
	install(DIRECTORY ${CMAKE_INSTALL_PREFIX}/lib/grantlee DESTINATION ${WINDOWSSTAGING})

	if(NOT Qt5Core_VERSION VERSION_LESS 5.11.0)
		# hack to work around the fact that we don't process the dependencies of plugins
		# as of Qt 5.11 this additional DLL is needed and it's only referenced in the qml DLLs
		install(FILES ${_qt5Core_install_prefix}/bin/Qt5PositioningQuick.dll DESTINATION ${WINDOWSSTAGING})
	endif()

	if(NOT DEFINED MAKENSIS)
		set(MAKENSIS makensis)
	endif()

	# the script we created above is now added as a command to run at
	# install time - so this ensures that subsurface.exe has been
	# built before this is run
	install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER} -DSUBSURFACE_TARGET=${SUBSURFACE_TARGET} -DSUBSURFACE_SOURCE=${SUBSURFACE_SOURCE} -DSTAGING=${WINDOWSSTAGING} -P ${CMAKE_SOURCE_DIR}/cmake/Modules/dlllist.cmake)")

	# create the subsurface-x.y.z.exe installer - this needs to depend
	# on the install target but cmake doesn't allow that, so we depend
	# on the fake target instead
	add_custom_target(
		fake_install
		COMMAND "${CMAKE_COMMAND}" --build . --target install
		DEPENDS ${SUBSURFACE_TARGET}
	)

	add_custom_target(
		installer
		COMMAND ${MAKENSIS} ${WINDOWSSTAGING}/subsurface.nsi
		DEPENDS fake_install
	)
elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
	# the syntax is odd, but this searches for libqtgeoservices_googlemaps.so
	# in the filesystem below our install-root
	# different Linux flavors put the plugin in different directories
	file(GLOB_RECURSE GOOGLEMAPS ${CMAKE_SOURCE_DIR}/../install-root/libqtgeoservices_googlemaps.so)
	if (NOT GOOGLEMAPS)
		message(STATUS "Cannot find libqtgeoservices_googlemaps.so")
	else()
		add_custom_target(link_googlemaps_plugin ALL COMMAND
			rm -rf ${CMAKE_BINARY_DIR}/geoservices &&
			mkdir -p ${CMAKE_BINARY_DIR}/geoservices &&
			ln -sf ${GOOGLEMAPS} ${CMAKE_BINARY_DIR}/geoservices)
	endif()
	install(FILES subsurface.debug DESTINATION bin)
	install(FILES subsurface.desktop DESTINATION share/applications)
	install(CODE "execute_process(COMMAND sh ${CMAKE_SOURCE_DIR}/scripts/add-version-to-appdata.sh WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})")
	install(FILES appdata/subsurface.appdata.xml DESTINATION share/metainfo)
	install(FILES icons/subsurface-icon.svg DESTINATION share/icons/hicolor/scalable/apps)
	install(DIRECTORY Documentation/images DESTINATION share/subsurface/Documentation)
	install(FILES ${DOCFILES} DESTINATION share/subsurface/Documentation)
	install(DIRECTORY theme DESTINATION share/subsurface)
	install(DIRECTORY printing_templates DESTINATION share/subsurface)
	install(FILES ${TRANSLATIONS} DESTINATION share/subsurface/translations)
        install(TARGETS ${SUBSURFACE_TARGET} DESTINATION bin)
endif()

if (MAKE_TESTS)
	enable_testing()
	add_subdirectory(tests)
endif()

# useful for debugging CMake issues
# print_all_variables()
