I have a Vulkan project configured with the following CMakeLists.txt on Windows:
cmake_minimum_required(VERSION 3.20)
project(Custom_Vulkan)
set(MINGW_INCLUDE "C:\\msys64\\mingw64\\include")
find_package(Vulkan REQUIRED)
find_package(glfw3 REQUIRED HINTS "C:\\msys64\\mingw64\\lib\\cmake")
add_subdirectory(shaders)
add_executable(AppTest main.cpp)
target_link_libraries(AppTest PUBLIC Vulkan::Vulkan glfw)
include_directories(${MINGW_INCLUDE})
Extensions for CMake (CMake & CMake Tools), and C++ (C/C++, C/C++ Extension Pack, C/C++ Themes) are installed, and I have configured and built my executable using the CMake Tools-extension.
Intellisense can at times be unreasonably slow and freezes completely, resulting in 0 autocompletion suggestions for both constants from built-in libraries like M_PI from cmath, but also for the Vulkan/GLFW-APIs which have been located by CMake.
Where should I search in order to locate the dependency that stalls Intellisense?
Is it possible to monitor/profile the Intellisense-search in order to find the issue?
The CMake-tools project is fully able to detect the dependencies, and compiles fine.
The Intellisense-freezes were in this case caused by dependency-issues between a FetchContent repository dependency in CMake and the C# vscode extension pack which caused an OmniSharp server-handle to remain open.
This was a standard FetchContent-pull:
FetchContent_Declare(
imgui_repo
GIT_REPOSITORY "https://github.com/ocornut/imgui.git"
)
FetchContent_MakeAvailable(imgui_repo)
Right-clicking the extension followed by disable(workspace) solved the issue.
Related
I know this is a daft question, but I'm a beginner in visual studio/c++/cmake. I'm looking for a quick intro on how to use Qt5 installed via vcpk using:
vcpkg install qt5-base:x64-windows
This all installed ok and I got the following:
The package qt5-base:x64-windows provides CMake targets:
find_package(Qt5Concurrent CONFIG REQUIRED)
target_link_libraries(main PRIVATE Qt5::Concurrent Qt5::ConcurrentPrivate)
etc....
I just don't know what to do next! Before using libs in VS I just did an <#include> now I'm confronted with this lot... Pref. I want some sort of explanation at newbie level please.
If I add the line (at the top of a .cpp file just as a test):
#include <QtWidgets/QApplication>
It gives: Error (active) E1696 cannot open source file "QtWidgets/QApplication"
I'm new, I thought vcpkg took all the pain out of having to add all the libs etc to the project options? What do I need to do?
If you ran vcpkg integrate install and are just using VS you can just #include <Qt5/QtWidgets/QApplication>
If you are using CMake:
find_package(Qt5 COMPONENTS Widgets Concurrent CONFIG REQUIRED) and use target_link_libraries as described by the other answers. But you probably have to switch to #include <QApplication> since cmake file add the QtWidgets folder to the include folders.
For find_package to find the vcpkg build versions you have to specify the vcpkg.cmake toolchain file as the CMAKE_TOOLCHAIN_FILE=<vcpkgroot>/scripts/buildsystems/vcpkg.cmake (must be set in the first CMake call or rather early in the CMakeLists.txt before any project() call) and maybe also VCPKG_TARGET_TRIPLET=<sometriplet> (must also be defined early before CMAKE_TOOLCHAIN_FILE is loaded) if you installed Qt5 using one of the static triplets.
vcpkg is a cross-platform C++ package manager. Unlike winget, apt, and brew, vcpkg is designed for developers. For example, it builds the binaries from the source by default.
So it help user to have libraries installed in their projects and be able to find them.
You still need to learn how CMake canonical find_package() work IMHO.
Qt provide a cmake config package and usually, you'll need to use
find_package(Qt5Core REQUIRED)
find_package(Qt5Gui REQUIRED)
find_package(Qt5Widgets REQUIRED)
then
target_link_libraries(main PRIVATE ... Qt5::Core Qt5::Gui Qt5::Widgets)
ie rule of Thumb: you need a QtWidget/* include ? then target_link to Qt5::Widget etc...
Please note that CMake also provides (i.e. built-in) a few tools to ease Qt-related dev...
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTORCC ON)
-> you should try to read the CMake doc...
i would like to build TBB to use it in another CMake project. I tried to build TBB from the Github source using the makefile (upgraded with VisualStudio 2015). This failed due to a mysterious error:
LINK : fatal error LNK1181: cannot open input file 'opencv_core300.lib'
Where does this error could originate from?
My second try was is to build TBB using another repository that allows a build using CMake. This build produces an tbb.lib, tbb.dll, etc. file.
Now I am stuck how to incorporate is in my other cmake files. There is no TBBConfig.cmake or similar.
My CMakeLists.txt for my project looks like this:
cmake_minimum_required(VERSION 3.10)
project(IntrafraktionelleRegistrierung)
find_package(ITK REQUIRED
COMPONENTS
ITKRegistrationCommon
ITKRegistrationMethodsv4
)
include(${ITK_USE_FILE})
set(SRC
${CMAKE_PROJECT_NAME}.cxx
)
if (DEFINED ENV{TBBROOT})
message(STATUS "TBBROOT: $ENV{TBBROOT}")
else()
message(STATUS "TBBROOT not defined!")
endif()
find_package(TBB REQUIRED)
add_executable(${CMAKE_PROJECT_NAME} ${SRC})
target_link_libraries( ${CMAKE_PROJECT_NAME}
${ITK_LIBRARIES}
tbb
)'
TBBROOT is the build directory of tbb. The FindTBB.cmake I have available is borrowed from here and copied to the modules directory of cmake.
The latest version of the binaries of TBB have a CMake folder with TBBConfig.cmake inside. I used this to link the TBB to my project but somehow I ended up by an error stating: "tbb-NOTFOUND.obj cannot be found". (This way is still under investigation.
Has someone used this repository to configure and build a cmake project?
About CMake related questions
Basically you have two options:
Integration of pre-built TBB binaries into your project
You can use the binaries of TBB (just as you did) according to the following example. After invocation of find_package(TBB REQUIRED) you will get TBB targets in a format TBB::<component> (e.g. TBB::tbb, TBB::tbbmalloc, etc). Also TBB_IMPORTED_TARGETS variable will contain all imported TBB targets.
So, you need to slightly modify your target_link_libraries:
target_link_libraries( ${CMAKE_PROJECT_NAME}
${ITK_LIBRARIES}
${TBB_IMPORTED_TARGETS}
)
or
target_link_libraries( ${CMAKE_PROJECT_NAME}
${ITK_LIBRARIES}
TBB::tbb
)
Also you can update your find_package if you need only TBB::tbb component in your project: find_package(TBB REQUIRED tbb)
Integration of TBB source code into your project
You can use tbb_build (it is a CMake wrapper using GNU Make on TBB Makefiles), but to run it on Windows under Visual Studio you will need to have GNU Make in your environment.
If you'd like to integrate this TBB (with CMake support) you can use add_subdirectory(<YOUR-TBB-ROOT>) (replace <YOUR-TBB-ROOT> with actual location of TBB) instead of find_package(TBB REQUIRED).
I am trying to build a cross platform OpenGL application, which means building and including multiple libraries (glfw, glbinding, glm, etc.) Because my application is cross platform, it makes sense to use cmake to generate all the build scripts and not have to muck about with them myself. I am attempting to target Windows and Linux specifically.
A main feature that I need is that the libraries I need are not installed on the host system. Furthermore, they cannot be installed (due to administrative reasons). What I need is to build these libraries and then build my application.
I am mostly working on Windows using Visual Studio 2017, which has cmake support included. Currently, I have attempted to build these libraries myself, however I am having many issues getting find_package to do the right thing.
My directory structure looks like this:
project/
|-src/
|- my sources for my application
|-include/
|- my header files
|-external/
|-glfw-3.2.1/
|-glbinding-2.1.4/
|-glfw-build/
|-glbinidng-build/
So I am attempting to build the external libraries and use them in my application. I am also attempting to follow cmake best practices. My CMakeLists.txt currently looks like this:
cmake_minimum_required(VERSION 3.5)
project(glTestProj)
set(CMAKE_PREFIX_PATH "external/")
find_package(glfw3 3.2 REQUIRED)
find_package(glbinding REQUIRED)
add_executable(glTest src/main.cpp)
target_compile_features(glTest PRIVATE cxx_std_17)
target_compile_options(glTest PRIVATE -Wall -Wextra)
target_link_libraries(
glTest
glfw
glbinding::glbinding
)
The libraries in question (glfw and glbinding) both have instructions on including them via cmake, however I am running into this issue:
CMake Error at CMakeLists.txt:6 (find_package):
By not providing "Findglfw3.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "glfw3", but
CMake did not find one.
Could not find a package configuration file provided by "glfw3" (requested
version 3.2) with any of the following names:
glfw3Config.cmake
glfw3-config.cmake
Add the installation prefix of "glfw3" to CMAKE_PREFIX_PATH or set
"glfw3_DIR" to a directory containing one of the above files. If "glfw3"
provides a separate development package or SDK, be sure it has been
installed.
Hello I need to work with OpenGL and want to create my project in Clion. But Clion cannot compile and run my projects because of the libraries I need to include. I can create my own makefile and run the program in terminal, but I want to do it in the IDE. How can I make this happen?
First make sure you installed all libraries correctly using the compiler you configured in clion/cmake. Assuminf you have a fresh CMakeLists.txt like
cmake_minimum_required(VERSION 3.3.2)
project(MyGL CPP)
add_executable(demo-run main.cpp)
For linking your libraries you need two things. First tell the compiler where to find the include files and second which libraries to link. You could just hard code you local installation like
target_link_libraries(demo-run path/to/glfw.lib path/to/opengl.lib path/to/jpeg.lib ...)
target_include_directories(demo-run PRIVATE path/to/glfw/include path/to/opengl/include path/to/jpeg/include ...)
however this is not very portable and if you want to work with another compiler or on another machine your project file will fail. Instead you can use the package system of cmake
find_package(PkgConfig REQUIRED)
pkg_search_module(GLFW REQUIRED glfw3)
find_package(JPEG REQUIRED)
find_package(GLEW REQUIRED)
find_package (OpenGL REQUIRED)
find_package (GLM REQUIRED)
target_link_libraries(demo-run ${GLFW_LIBRARIES} ${GLEW_LIBRARIES} ${JPEG_LIBRARIES} ${OPENGL_LIBRARIES})
target_include_directories(demo-run PRIVATE ${GLFW_INCLUDE_DIRS} ${GLEW_INCLUDE_DIR} ${JPEG_INCLUDE_DIR} ${OPENGL_INCLUDE_DIR} ${GLM_INCLUDE_DIR})
The glfw part is a bit tricky and works only on linux i guess see http://www.glfw.org/docs/3.0/build.html.
This code is not tested at all and you may need to specify some enviroment variables so cmake can find the packages or provide additional find scripts like https://github.com/lighttransport/nanogi/blob/master/cmake/FindGLM.cmake.
I would recommend to use the CMake build tool which does the work generating Makefiles for you and is also directly supported by clion. When you open the directory containing a CMakeLists.txt (CMake Project File) with clion, it should be automatically be loaded and compiled (if not just hit build)
A very simple example CMake project would look like this
cmake_minimum_required (VERSION 2.8.9)
project (OpenGl-Stuff)
include_directories(src)
add_executable(your-binary src/your-code.c src/your-code.h)
target_link_libraries(your-binary opengl)
# target_link_libraries will search for libopengl on standard system paths,
# maybe the library is not called libopengl, then you have to adjust the name above
this cmake project will generate the binary for you and link it against opengl
Just like in CLion I want to use SFML with Visual Studio 2017, but I'm still learning cmake and I don't know the commands or the logic of how cmake works at all. I've just seen some posts and got this litle script.
Note: I downloaded the latest version of sfml in the link provided, I just taked the extrated directory and put alongside CMakeLists.txt in my folder
#sets up the minimum version of cmake
cmake_minimum_required(VERSION 3.9)
#how the project will be called
project (space_impact)
#set c++11 standard
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" -std=c++11)
#set source files
set (SOURCE_FILES main.cpp)
#we add the executable of the program
add_executable (space_impact ${SOURCE_FILES})
#taked from a mac-clion tutorial, doesn't work
set (CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/SFML/cmake-modules/")
find_package (SFML REQUIRED system window graphics network audio)
if (SFML_FOUND)
include_directories(${SFML_INCLUDE_DIR})
target_link_libraries(space_impact ${SFML_LIBRARIES})
endif()
that thing gave me errors:
Error CMake Error at SFML/cmake-modules/FindSFML.cmake:355 (message):
Could NOT find SFML (missing: SFML_SYSTEM_LIBRARY SFML_WINDOW_LIBRARY
SFML_GRAPHICS_LIBRARY SFML_NETWORK_LIBRARY SFML_AUDIO_LIBRARY) SFML/cmake-modules/FindSFML.cmake
I want everything to be dynamic, but I don't know how can I do that..
So my question is what should I do for setting up correctly SFML with Cmake in Visual Studio.
I don't want the old-fashioned method from the official website
UPDATE
Here's my location....
The thing is.. the FindSFML.cmake script it's not working...
What files should I move for make it working?
Your script is perfectly fine, except three things I'd change:
Move the whole module detection before defining targets. I'm pretty sure you also have to define your include directories before.
Your if(SFML_FOUND) bracket is pretty pointless right now, because you've set SFML to be required, which means it will never get past find_package() unless it's found.
-std=c++11 is a GCC only flag (MSVC will always use the latest standard, unless specified). As such you'll have to check the compiler here or use CMAKE_CXX_STANDARD.
So the "cleaned" CMakeLists.txt could look like this:
#sets up the minimum version of cmake
cmake_minimum_required(VERSION 3.9) # personally I'd set this version as low as required; you don't have to require the cutting edge version
#how the project will be called
project (space_impact)
#set the C++ standard to be used
set (CMAKE_CXX_STANDARD 11)
#set source files
set (SOURCE_FILES main.cpp)
#look for SFML and add it
set (CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/SFML/cmake-modules/")
find_package (SFML REQUIRED system window graphics network audio)
include_directories(${SFML_INCLUDE_DIR})
#we add the executable of the program
add_executable (space_impact ${SOURCE_FILES})
target_link_libraries(space_impact ${SFML_LIBRARIES} ${SFML_DEPENDENCIES})
Note that adding SFML_DEPENDENCIES to the library list is optional, unless you're using a static version of SFML.
But what about your SFML issue? Since you don't have the SFML files installed in any directory looked into by default, you'll have to tell CMake where it's found using the CMake variable SFML_ROOT or the environment variable of the same name.
So the first time you're invoking CMake, it could look like this:
cmake -G "Visual Studio 15 2017" -DSFML_ROOT=path/to/sfml path/to/source
This is all you need to compile sfml in your cmake project.
find_package(SFML 2.5.1 COMPONENTS system graphics audio network REQUIRED)
add_executable (AwesomeProject "AwesomeProject.cpp" "AwesomeProject.h")
target_link_libraries(AwesomeProject PRIVATE sfml-audio sfml-graphics sfml-network sfml-system)
Also set SFML_DIR var to your sfml folder.