qtk/CMakeLists.txt

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################################################################################
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## Project for working with OpenGL and Qt6 widgets ##
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## ##
## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com ##
## All Content (c) 2023 Shaun Reed, all rights reserved ##
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################################################################################
cmake_minimum_required(VERSION 3.23)
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################################################################################
# Includes
################################################################################
include("${CMAKE_SOURCE_DIR}/cmake/include/git_submodule.cmake")
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include(CMakePackageConfigHelpers)
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################################################################################
# Constants
################################################################################
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
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if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
add_compile_options(/wd4131 /wd4127)
endif()
################################################################################
# Project
################################################################################
project(
#[[NAME]] Qtk
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VERSION 0.2
DESCRIPTION "Qt OpenGL library and desktop application."
LANGUAGES CXX C
)
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################################################################################
# Options
################################################################################
option(QTK_DEBUG "Enable debugger" ON)
option(QTK_BUILD_GUI "Build the Qtk desktop application" ON)
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option(QTK_BUILD_EXAMPLE "Build the Qtk example desktop application" OFF)
option(QTK_UPDATE_SUBMODULES "Update external project (assimp) submodule" OFF)
# Install Qtk for use within Qt Creator projects only, instead of system-wide.
option(QTK_PREFIX_QTCREATOR "Install Qtk to Qt Creator." OFF)
# Option for bringing your own assimp installation; Otherwise not needed
# + If assimp is available system-wide we can just set QTK_UPDATE_SUBMODULES OFF
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option(
QTK_ASSIMP_NEW_INTERFACE
"Use the assimp::assimp interface (WIN / OSX)"
OFF
)
set(QT_DIR "$ENV{HOME}/Code/Clones/Qt/" CACHE PATH "Path to Qt6")
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# Qt Designer will look in different locations if WIN / Unix.
# These paths are for using Qt Designer integrated within Qt Creator.
# Standalone Qt Designer may use different paths.
if (WIN32)
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# These paths may be different on windows. I have not tested this.
set(QT_PLUGIN_INSTALL_DIR "${QT_DIR}/Tools/QtCreator/bin/plugins/designer")
set(QT_PLUGIN_LIBRARY_DIR "${QT_DIR}/Tools/QtCreator/lib/Qt/lib")
else()
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set(QT_PLUGIN_INSTALL_DIR "${QT_DIR}/Tools/QtCreator/lib/Qt/plugins/designer")
set(QT_PLUGIN_LIBRARY_DIR "${QT_DIR}/Tools/QtCreator/lib/Qt/lib")
endif()
# This should be set to your Qt6 installation directory.
set(QT_INSTALL_DIR "${QT_DIR}/6.3.1/gcc_64/" CACHE PATH "Path to Qt6 install")
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# Point CMAKE_PREFIX_PATH to Qt6 install directory
# If Qtk is built within Qt Creator this is not required.
list(APPEND CMAKE_PREFIX_PATH "${QT_INSTALL_DIR}")
set(QTK_PLUGIN_LIBRARY_DIR "${QT_PLUGIN_LIBRARY_DIR}")
set(QTK_PLUGIN_INSTALL_DIR "${QT_PLUGIN_INSTALL_DIR}")
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set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install")
if (QTK_PREFIX_QTCREATOR)
# TODO: This might be a bit strange and needs more testing.
set(CMAKE_INSTALL_PREFIX "${QT_INSTALL_DIR}")
endif()
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message(STATUS "[Qtk] CMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}")
set(QTK_RESOURCES "${CMAKE_SOURCE_DIR}/resources")
# Print all QTK options and their values.
get_cmake_property(VAR_NAMES VARIABLES)
list(FILTER VAR_NAMES INCLUDE REGEX "^QTK_.*$")
list(SORT VAR_NAMES)
foreach(VAR_NAME ${VAR_NAMES})
message(STATUS "[Qtk] ${VAR_NAME}=${${VAR_NAME}}")
endforeach()
################################################################################
# External Dependencies
################################################################################
# Find Qt
find_package(Qt6 COMPONENTS Core UiPlugin OpenGLWidgets)
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if(NOT Qt6_FOUND)
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message(
SEND_ERROR "[Qtk] Error: Unable to find Qt6 at CMAKE_PREFIX_PATH: "
"${CMAKE_PREFIX_PATH}"
)
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message(
FATAL_ERROR "[Qtk] Error: Specify path to Qt6 with `cmake "
"-DCMAKE_PREFIX_PATH=/path/to/Qt/6.x.x/gcc_64 -S /path/to/qtk -B "
"/path/to/qtk/build && cmake --build /path/to/qtk/build -j $(nprocs)`"
)
endif()
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# Find Assimp
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if(QTK_UPDATE_SUBMODULES)
message(STATUS "[Qtk] Updating submodules...")
submodule_update("${CMAKE_CURRENT_SOURCE_DIR}/extern/assimp/assimp/")
add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/extern/assimp/assimp/")
else()
find_package(assimp REQUIRED)
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endif()
if(WIN32)
find_package(OpenGL REQUIRED)
endif()
################################################################################
# Qtk
################################################################################
add_subdirectory(src)
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if(WIN32)
get_target_property(_qt6_qmake_location Qt6::qmake IMPORTED_LOCATION)
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execute_process(
COMMAND "${_qt6_qmake_location}" -query QT_INSTALL_PREFIX
RESULT_VARIABLE return_code
OUTPUT_VARIABLE qt6_install_prefix
OUTPUT_STRIP_TRAILING_WHITESPACE
)
file(TO_NATIVE_PATH "${qt6_install_prefix}/bin" qt6_install_prefix)
if(TARGET Qt6::windeployqt)
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add_custom_command(
TARGET qtk-main
POST_BUILD
COMMAND set PATH=%PATH%$<SEMICOLON>${qt6_install_prefix}
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COMMAND Qt6::windeployqt --dir "${CMAKE_BINARY_DIR}/windeployqt" "$<TARGET_FILE_DIR:qtk-main>/$<TARGET_FILE_NAME:qtk-main>"
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)
install(DIRECTORY "${CMAKE_BINARY_DIR}/windeployqt/" DESTINATION bin)
endif()
if(MSVC AND TARGET Qt6::qmake)
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set(VSUSER_FILE "${CMAKE_CURRENT_BINARY_DIR}/qtk-main.vcxproj.user")
file(TO_NATIVE_PATH "${CMAKE_BINARY_DIR}/extern/assimp/assimp/bin" assimp_bin)
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file(WRITE ${VSUSER_FILE} "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n")
file(APPEND ${VSUSER_FILE} "<Project xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\">\n")
file(APPEND ${VSUSER_FILE} " <PropertyGroup>\n")
file(APPEND ${VSUSER_FILE} " <LocalDebuggerEnvironment>Path=$(SolutionDir)\\lib\\$(Configuration);${qt6_install_prefix};${assimp_bin};$(Path)\n")
file(APPEND ${VSUSER_FILE} "$(LocalDebuggerEnvironment)</LocalDebuggerEnvironment>\n")
file(APPEND ${VSUSER_FILE} " <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>\n")
file(APPEND ${VSUSER_FILE} " </PropertyGroup>\n")
file(APPEND ${VSUSER_FILE} "</Project>\n")
endif()
endif()