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67fcf4619bfeb8dfd52c0115692a62ec02624cdd
qtk/CMakeLists.txt
Shaun Reed 67fcf4619b Update assimp to fix Mac CI. 
Zlib no longer uses fdopen.
Zlib previously had redefined fdopen, causing conflicts in apple things.
Zlib has since updated to remove these defines, fixing the issue.
2026-02-14 16:33:10 -05:00

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CMake
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################################################################################
## Project for working with OpenGL and Qt6 widgets ##
## ##
## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com ##
## All Content (c) 2025 Shaun Reed, all rights reserved ##
################################################################################
cmake_minimum_required(VERSION 3.28)
################################################################################
# Constants
################################################################################
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(CMAKE_MACOSX_BUNDLE ON)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(CMAKE_AUTORCC_OPTIONS --binary)
if(WIN32)
set(CMAKE_COMPILE_WARNING_AS_ERROR OFF)
add_compile_options(/wd4131 /wd4127)
endif()
add_compile_options(-fPIC)
################################################################################
# Project
################################################################################
project(
#[[NAME]] Qtk
VERSION 0.3
DESCRIPTION "Qt OpenGL library and desktop application."
LANGUAGES CXX C
)
################################################################################
# Includes
################################################################################
include("${CMAKE_SOURCE_DIR}/cmake/include/git_submodule.cmake")
include(CMakePackageConfigHelpers)
include(GNUInstallDirs)
################################################################################
# Options
################################################################################
option(QTK_DEBUG "Enable debugger" OFF)
option(QTK_SUBMODULES "Update external project (assimp) submodule" OFF)
option(QTK_EXAMPLE "Build the Qtk example desktop application" ON)
option(QTK_CCACHE "Enable ccache" ON)
# Install Qtk for use within Qt Creator projects only, instead of system-wide.
option(QTK_PREFIX_QTCREATOR "Install Qtk to Qt Creator. Untested." OFF)
# Option for bringing your own assimp installation; Otherwise not needed
# + If assimp is available system-wide we can just set QTK_SUBMODULES OFF
option(
QTK_ASSIMP_NEW_INTERFACE
"Use the assimp::assimp interface (WIN / OSX)"
OFF
)
# Qtk Component Options
option(QTK_PLUGINS "Install Qtk plugins to Qt Designer path." OFF)
# Options for qtk_gui
option(QTK_GUI "Build the Qtk desktop application" ON)
option(QTK_GUI_SCENE
"Fetch model resources and build the GUI with an example scene." OFF
)
if (QTK_CCACHE)
set(CMAKE_CXX_COMPILER_LAUNCHER ccache)
endif()
if(QTK_DEBUG OR CMAKE_BUILD_TYPE MATCHES "^[Dd][Ee][Bb][Uu][Gg]$")
set(QTK_DEBUG ON)
set(CMAKE_BUILD_TYPE Debug)
else()
set(QTK_DEBUG OFF)
set(CMAKE_BUILD_TYPE Release)
endif()
# This should be set to your Qt6 installation directory.
set(QT_INSTALL_DIR "$ENV{HOME}/Qt/6.5.0/gcc_64/lib/cmake" CACHE PATH "Path to Qt6 install.")
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install")
endif()
set(QTK_RESOURCES "${CMAKE_SOURCE_DIR}/resources")
set(QTK_OSX_ICONS ${CMAKE_SOURCE_DIR}/resources/icons/osx/kilroy.icns)
string(TIMESTAMP YEAR "%Y")
set(QTK_COPYRIGHT "All Content © 2021-${YEAR} Shaun Reed, all rights reserved.")
# Point CMAKE_PREFIX_PATH to Qt6 install directory
# If Qtk is built within Qt Creator this is not required.
list(APPEND CMAKE_PREFIX_PATH "${QT_INSTALL_DIR}")
if (QTK_PREFIX_QTCREATOR)
# TODO: This might be a bit strange and needs more testing.
set(CMAKE_INSTALL_PREFIX "${QT_INSTALL_DIR}")
endif()
set(
QT_CREATOR_DIR
"${QT_INSTALL_DIR}/../../Tools/QtCreator"
CACHE PATH "Qt Creator path used to install Qtk plugins for Qt Designer."
)
# Print all QTK options and their values at the end of configuration.
# We initialize this list here so that we can append to it as needed.
# All variables in this list will be printed at the end of configuration.
get_cmake_property(VAR_NAMES VARIABLES)
list(FILTER VAR_NAMES INCLUDE REGEX "^[qQ][tT][kK]_.*$")
list(SORT VAR_NAMES)
################################################################################
# External Dependencies
################################################################################
# Find Qt
find_package(Qt6 COMPONENTS Core UiPlugin OpenGLWidgets)
qt_standard_project_setup()
if(NOT Qt6_FOUND)
message(
SEND_ERROR "[Qtk] Error: Unable to find Qt6 at CMAKE_PREFIX_PATH: "
"${CMAKE_PREFIX_PATH}"
)
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()
#
# To use custom plugins, set QT_PLUGIN_PATH environment variable before running designer
# Or, we can install plugins to the designer for use across all projects.
# Qt Creator on linux will look here for widget plugins in the integrated designer
# /home/shaun/Qt/Tools/QtCreator/lib/Qt/lib
# Qt Designer will use the following path on linux
# /home/shaun/Qt/6.5.0/gcc_64/plugins/designer/
# We can use this path after find_package(Qt6) to install our plugins on all systems
# ${QT6_INSTALL_PREFIX}/${QT6_INSTALL_PLUGINS}/designer
# And run designer at ${QT6_INSTALL_PREFIX}/bin/designer
# Use cmake -DQTK_PLUGIN_INSTALL_DIR=/some/path to override this install path
set(
QTK_PLUGIN_INSTALL_DIR
"${QT6_INSTALL_PREFIX}/${QT6_INSTALL_PLUGINS}/designer" CACHE PATH
"Path to install Qtk plugin collection."
)
# See cmake configure output for values of these variables on your system
set(
VAR_PATHS
CMAKE_PREFIX_PATH CMAKE_INSTALL_PREFIX QTK_PLUGIN_INSTALL_DIR QT6_INSTALL_PREFIX
QT_INSTALL_DIR
)
# Add QT6_INSTALL_PLUGINS to VAR_NAMES so it is printed at end of configuration.
list(APPEND VAR_NAMES QT6_INSTALL_PLUGINS)
# Find Assimp.
if(QTK_SUBMODULES)
if(APPLE)
# Avoid zlib redefining fdopen, causing build failures in apple clang.
# https://github.com/assimp/assimp/issues/6118
add_compile_definitions(-Dfdopen=fdopen)
endif()
if(NOT WIN32)
add_compile_options(-fPIC)
endif()
# Required to statically link.
set(BUILD_SHARED_LIBS OFF CACHE STRING "Build static assimp libs" FORCE)
set(ASSIMP_BUILD_ZLIB ON CACHE STRING "Build Zlib with assimp." FORCE)
set(
ASSIMP_INSTALL
OFF CACHE STRING "Disable to use assimp as a submodule."
FORCE
)
set(ASSIMP_NO_EXPORT ON CACHE STRING "Disable to export assimp." FORCE)
set(ASSIMP_WARNINGS_AS_ERRORS OFF CACHE STRING "No warnings as errors." FORCE)
set(ASSIMP_BUILD_TESTS OFF CACHE STRING "Do not build assimp tests." FORCE)
message(STATUS "[Qtk] Updating submodules...")
submodule_update("${CMAKE_CURRENT_SOURCE_DIR}/extern/assimp/assimp/")
add_subdirectory(
"${CMAKE_CURRENT_SOURCE_DIR}/extern/assimp/assimp/"
EXCLUDE_FROM_ALL
)
install(
TARGETS assimp zlibstatic
EXPORT qtk_export
COMPONENT qtk
ARCHIVE DESTINATION lib
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
)
else()
find_package(assimp REQUIRED)
endif()
if(WIN32)
find_package(OpenGL REQUIRED)
endif()
################################################################################
# Qtk
################################################################################
add_subdirectory(src)
if(QTK_EXAMPLE)
# Create a namespaced alias for linking with libqtk in the example.
add_library(${PROJECT_NAME}::qtk ALIAS qtk)
add_subdirectory(example-app EXCLUDE_FROM_ALL)
endif()
# Print all QTK options and their values at the end of configuration. This also
# prints any additional variables that we have added to VAR_NAMES and VAR_PATHS.
foreach(VAR_NAME IN LISTS VAR_NAMES VAR_PATHS)
if(VAR_NAME IN_LIST VAR_PATHS)
# Print absolute if variable is path
get_filename_component(VAR_REALPATH "${${VAR_NAME}}" REALPATH)
message(STATUS "[Qtk] ${VAR_NAME}=${VAR_REALPATH}")
else()
message(STATUS "[Qtk] ${VAR_NAME}=${${VAR_NAME}}")
endif()
endforeach()
message(STATUS "[Qtk] Installation prefix: ${CMAKE_INSTALL_PREFIX}")
message(STATUS "[Qtk] Found Qt6: ${Qt6Core_VERSION}")
# qt_generate_deploy_app_script is supported on Linux in QtCore >= 6.5.0.
# qt_generate_deploy_app_script supports Windows and OSX in QtCore >= 6.3.
# https://doc.qt.io/qt-6.5/qt-generate-deploy-app-script.html
# https://doc.qt.io/archives/qt-6.4/qt-generate-deploy-app-script.html
# The application can still build and run, we just can't install.
if(QTK_GUI OR QTK_EXAMPLE)
if(UNIX AND NOT APPLE)
# Ubuntu 24.04 provides QtCore 6.4.2 in qt-base-dev.
# This version of qt_generate_deploy_app_script does not support Linux.
if (Qt6_VERSION VERSION_LESS "6.5.0")
message(WARNING "[Qtk] Installation is only supported on Qt >=6.5.\n")
endif()
elseif(APPLE OR WIN32)
# Predates qt_generate_deploy_app_script.
if (Qt6_VERSION VERSION_LESS "6.3.0")
message(WARNING "[Qtk] Installation is only supported on Qt >=6.5.\n")
endif()
endif()
endif()
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