I'm trying to compile a c++ program with the SDL package using cmake but I have issues finding the SDL.h file when I compile it with the make command.
Currently the CMakeLists.txt looks like this:
cmake_minimum_required(VERSION 3.5)
set(CMAKE_CXX_STANDARD 17)
project(TestProject VERsion 1.0 DESCRIPTION "Game project" LANGUAGES CXX)
add_compile_options(-Wall -Wextra -pedantic -Werror)
add_library(Gamelib ${PROJECT_SOURCE_DIR}/Source/Game/game.cc)
target_include_directories(Gamelib PUBLIC ${PROJECT_SOURCE_DIR}/Source/include
${PROJECT_SOURCE_DIR}/SDL/include)
add_executable(main ${PROJECT_SOURCE_DIR}/Source/main.cc)
target_link_libraries(main Gamelib)
The project structure looks like this:
|--project
|
+-- CMakeLists.txt
|
+-- Source
| |
| +--Game
| | |
| | +-- game.cc
| |
| +--include
| | |
| | +--game.h
| |
| +-- main.cc
|
|
+--SDL
|
+--include
I also tried with using the find_package command but then I ended up with a linker error instead. Does anybody have an idea of how I can solve this?
Related
This question already has answers here:
How to copy DLL files into the same folder as the executable using CMake?
(12 answers)
Program was not found .dll file
(1 answer)
Closed 2 years ago.
I'm trying to make a program with SDL2.0 but the program doesn't show any output and it quit instantly.
I am using Windows 10 x64 and I am doing this on VSCode, latest CMake version.
I actually tried amd64, amd64_x86, x86, x86_amd64 toolchains, same thing happens.
A normal hello world program worked well but when importing SDL.h it wouldn't do anything, no output and delays.
C++ Program (main.py):
#include "SDL.h"
#include <stdio.h>
int main( int argc, char* args[] )
{
printf("Hi\n");
SDL_Init(SDL_INIT_VIDEO);
SDL_Delay(5 * 1000);
SDL_Quit();
return 0;
}
When debugging the log stated that "MuserSDL.exe' has exited with code -1073741515 (0xc0000135)".
CMake file:
cmake_minimum_required(VERSION 3.0.0)
project(MuserSDL VERSION 0.1.0)
include(CTest)
enable_testing()
include_directories(sdl/include)
link_directories(sdl/lib/x64)
message(${PROJECT_SOURCE_DIR})
add_executable(MuserSDL src/main.cpp)
target_link_libraries(MuserSDL SDL2 SDL2main)
target_include_directories(MuserSDL PUBLIC sdl/include)
set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)
The tree printed by tree /a /f (Reduced)
C:.
| .gitignore
| CMakeLists.txt
| LICENSE
| README.md
|
+---.vscode
| settings.json
|
+---build (...)
|
+---sdl
| | BUGS.txt
| | ...
| |
| +---docs (...)
| |
| +---include
| | begin_code.h
| | close_code.h
| | SDL.h
| | ...
| |
| \---lib
| +---x64
| | SDL2.dll
| | SDL2.lib
| | SDL2main.lib
| | SDL2test.lib
| |
| \---x86 (...)
|
\---src
main.cpp
Solution found here. I should copy the sdl libraries under the target executable directory.
I am writing a Game Engine, which is going very well. But I am running into a problem where my CMakeLists.txt is just too messy, and I don't know enough about CMake. My project uses multiple (CMake) libraries, which are added using add_subdirectory and then target_link_libraries. My project consists of the Engine(executable), the Editor(library), and some tests/examples. Here is my file structure:
C:.
| CMakeLists.txt
| tree.txt
|
+---Editor
| | README.md
| |
| \---src
| main.cpp
|
+---Engine
| | README.md
| |
| +---src
| | | main.cpp
| | |
| | +---API
| | | Core.h
| | |
| | +---App
| | | Application.cpp
| | |
| | +---ExtApp
| | | | AppInterface.cpp
| | | |
| | | +---Engine
| | | | ExtAppLoader.cpp
| | | |
| | | \---Game
| | | InfoExport.cpp
| | |
| | +---Framework
| | | Asset.cpp
| | |
| | +---Managing
| | | AssetLoader.cpp
| | |
| | +---Rendering
| | | | Renderer.cpp
| | | |
| | | \---Renderables
| | | Canvas2DRenderable.cpp
| | |
| | \---Types
| | Vector3f.cpp
| |
| \---TestResources
| \---Shaders
| Canvas2DTexturedTriangle.f
| Canvas2DTexturedTriangle.v
| Canvas2DUntexturedTriangle.f
| Canvas2DUntexturedTriangle.v
| ImTest.f
| ImTest.v
|
+---Libraries
| +---glfw
| | CMakeLists.txt
| |
| \---glm
| CMakeLists.txt
|
\---Tests
\---TestGame
\---src
main.cpp
As you can see I have one CMakeLists at the begin, which loads all the projects. Then I have libraries, which have a CMakeLists too. Every directory has only one file to make the tree less big, but there are multiple fies in a directory. Also, here is my current, messy, almost-useless CMakeLists file:
cmake_minimum_required(VERSION 3.6)
#project(3DEngine)
add_subdirectory(Libraries/glfw) #Add glfw to the project
# Make sure we're running C++17 so all features(like std::filesystem) are present.
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
option(BUILD_ENGINE_FOR_EDITOR "Build the engine as DLL/SO for the editor and add editor specific things. Otherwise build engine as game exec" OFF)
option(BUILD_ENGINE_FOR_DLL_APPS "Have the Engine load the game(and plugins) from dll's." ON)
project (Engine)#project engine
include_directories(Libraries/whereami/src)
include_directories(Engine/src/)
include_directories(Libraries/glfw/include)
include_directories(Libraries/glm)
include_directories(Libraries/glad/include)
include_directories(Libraries/stb)
file(GLOB EngineRootSOURCES "Engine/src/*.cpp" "Engine/src/*.h")
file(GLOB EngineRenderingSOURCES "Engine/src/Rendering/*.cpp" "Engine/src/Rendering/*.h")
file(GLOB EngineAppSOURCES "Engine/src/App/*.cpp" "Engine/src/App/*.h")
file(GLOB EngineRenderingRenderablesSOURCES "Engine/src/Rendering/Renderables/*.cpp" "Engine/src/Rendering/Renderables/*.h")
file(GLOB EngineManagingSOURCES "Engine/src/Managing/*.cpp" "Engine/src/Managing/*.h")
file(GLOB EngineTypesSOURCES "Engine/src/Types/*.cpp" "Engine/src/Types/*.h")
file(GLOB EngineGameEssentialsSOURCES "Engine/src/GameEssentials/*.cpp" "Engine/src/GameEssentials/*.h")
file(GLOB EngineLibsSOURCES "Libraries/whereami/src/whereami.c" "Libraries/glad/src/glad.c")
file(GLOB EngineFrameworkSOURCES "Engine/src/Framework/*.h" "Engine/src/Framework/*.cpp")
file(GLOB APISOURCES "Engine/src/API/*.cpp" "Engine/src/API/*.h")
file(GLOB EngineExtAppSOURCES "Engine/src/ExtApp/*.cpp" "Engine/src/ExtApp/*.h"
"Engine/src/ExtApp/Interface/*.cpp" "Engine/src/ExtApp/Interface/*.h")
file(GLOB EngineExtAppGameSOURCES "Engine/src/ExtApp/Game/*.cpp" "Engine/src/ExtApp/Game/*.h")
source_group("ExtApp" FILES ${EngineExtAppGameSOURCES})
file(GLOB EngineExtAppEngineSOURCES "Engine/src/ExtApp/Engine/*.cpp" "Engine/src/ExtApp/Engine/*.h")
source_group("ExtApp" FILES ${EngineExtAppEngineSOURCES})
if(BUILD_ENGINE_FOR_EDITOR)
file(GLOB EngineEditorSOURCES "Engine/src/ExtApp/*.cpp" "Engine/src/ExtApp/*.h"
"Engine/src/ExtApp/Interface/*.cpp" "Engine/src/ExtApp/Interface/*.h")
if(BUILD_ENGINE_FOR_DLL_APPS)
add_library(Engine SHARED ${EngineRootSOURCES} ${EngineRenderingSOURCES} ${EngineTypesSOURCES} ${EngineRenderingRenderablesSOURCES} ${EngineManagingSOURCES} ${EngineGameEssentialsSOURCES} ${EngineLibsSOURCES} ${EngineEditorSOURCES} ${EngineExtAppSOURCES} ${EngineAppSOURCES} ${APISOURCES} ${EngineExtAppEngineSOURCES} ${EngineFrameworkSOURCES})
source_group("ExtApp" FILES ${EngineExtAppSOURCES})
elseif(NOT BUILD_ENGINE_FOR_DLL_APPS)
add_library(Engine SHARED ${EngineRootSOURCES} ${EngineRenderingSOURCES} ${EngineTypesSOURCES} ${EngineRenderingRenderablesSOURCES} ${EngineManagingSOURCES} ${EngineGameEssentialsSOURCES} ${EngineLibsSOURCES} ${EngineEditorSOURCES} ${EngineExtAppSOURCES} ${EngineAppSOURCES} ${APISOURCES} ${EngineExtAppEngineSOURCES} ${EngineFrameworkSOURCES})
endif()
target_link_libraries(Engine glfw)
source_group("Rendering" FILES ${EngineRenderingSOURCES})
source_group("Rendering/Renderables" FILES ${EngineRenderingRenderablesSOURCES})
source_group("Managing" FILES ${EngineManagingSOURCES})
source_group("App" FILES ${EngineAppSOURCES})
source_group("Types" FILES ${EngineTypesSOURCES})
source_group("GameEssentials" FILES ${EngineGameEssentialsSOURCES})
source_group("Libs" FILES ${EngineLibsSOURCES})
source_group("ExtApp" FILES ${EngineEditorSOURCES})
source_group("API" FILES ${APISOURCES})
source_group("Framework" FILES ${EngineFrameworkSOURCES})
elseif(NOT BUILD_ENGINE_FOR_EDITOR)
if(BUILD_ENGINE_FOR_DLL_APPS)
file(GLOB EngineExtAppSOURCES "Engine/src/ExtApp/*.cpp" "Engine/src/ExtApp/*.h"
"Engine/src/ExtApp/Interface/*.cpp" "Engine/src/ExtApp/Interface/*.h")
add_executable(Engine ${EngineRootSOURCES} ${EngineRenderingSOURCES} ${EngineTypesSOURCES} ${EngineRenderingRenderablesSOURCES} ${EngineManagingSOURCES} ${EngineGameEssentialsSOURCES} ${EngineLibsSOURCES} ${EngineExtAppSOURCES} ${EngineAppSOURCES} ${APISOURCES} ${EngineExtAppEngineSOURCES} ${EngineFrameworkSOURCES})
source_group("ExtApp" FILES ${EngineExtAppSOURCES})
elseif(NOT BUILD_ENGINE_FOR_DLL_APPS)
add_executable(Engine ${EngineRootSOURCES} ${EngineRenderingSOURCES} ${EngineTypesSOURCES} ${EngineRenderingRenderablesSOURCES} ${EngineManagingSOURCES} ${EngineGameEssentialsSOURCES} ${EngineLibsSOURCES} ${EngineExtAppSOURCES} ${EngineAppSOURCES} ${APISOURCES} ${EngineExtAppEngineSOURCES} ${EngineFrameworkSOURCES})
endif()
target_link_libraries(Engine glfw)
source_group("Rendering" FILES ${EngineRenderingSOURCES})
source_group("Rendering/Renderables" FILES ${EngineRenderingRenderablesSOURCES})
source_group("Managing" FILES ${EngineManagingSOURCES})
source_group("App" FILES ${EngineAppSOURCES})
source_group("Types" FILES ${EngineTypesSOURCES})
source_group("GameEssentials" FILES ${EngineGameEssentialsSOURCES})
source_group("Libs" FILES ${EngineLibsSOURCES})
source_group("API" FILES ${APISOURCES})
source_group("Framework" FILES ${EngineFrameworkSOURCES})
endif()
#add_library(Engine SHARED ${EngineSOURCES})
## END project engine
project (Module_OpenGL_Renderer_Input)#project module_renderer_opengl3
include_directories(Libraries/glfw/include)
include_directories(Libraries/glm)
include_directories(Libraries/glad/include)
include_directories(Libraries/stb)
file(GLOB Module_OpenGL_Renderer_InputSOURCES "Modules/Module_OpenGL_Renderer_Input/src/*.cpp" "Modules/Module_OpenGL_Renderer_Input/src/*.h" "Libraries/glad/src/glad.c")
add_library(Module_OpenGL_Renderer_Input SHARED ${Module_OpenGL_Renderer_InputSOURCES})
target_link_libraries(glfw)
##END project module_renderer_opengl3
project (Test1)#project test | This project is used to test the engine functionality.
include_directories(Libraries/imgui)
file(GLOB Test1SOURCES "Tests/Test1/src/*.cpp" "Tests/Test1/src/*.h" "Libraries/imgui/imgui*.cpp" ${APISOURCES})
add_executable(Test1 ${Test1SOURCES})
target_link_libraries(Test1 ${CMAKE_DL_LIBS})
project (TestGame)#project test | This project is used to test the engine functionality.
include_directories(Libraries/imgui)
file(GLOB TestGameSOURCES "Tests/TestGame/src/*.cpp" "Tests/TestGame/src/*.h" "Libraries/imgui/imgui*.cpp" ${EngineRenderingSOURCES} ${EngineTypesSOURCES} ${EngineRenderingRenderablesSOURCES} ${EngineManagingSOURCES} ${EngineGameEssentialsSOURCES} ${EngineLibsSOURCES} ${EngineAppSOURCES} ${APISOURCES} ${EngineExtAppSOURCES} ${EngineExtAppGameSOURCES} ${EngineFrameworkSOURCES})
add_library(TestGame SHARED ${TestGameSOURCES})
target_link_libraries(TestGame glfw)
project (Editor)#project editor | This is used to make projects and build projects(using the engine)
include_directories(Libraries/imgui)
file(GLOB EditorSOURCES "Editor/src/*.cpp" "Editor/src/*.h" "Libraries/imgui/imgui*.cpp" ${APISOURCES})
add_executable(Editor ${EditorSOURCES})
I contains lot's of things that are completely useless, or not needed anymore.
So here are my questions:
Does every directory NEED a CMakeLists file, like I see in a lot of projects?
Do I need to provide every directory containing source files, or can I have it search automatically for source and header files in directories?
I also see that a lot of other CMake projects provide each source/header file seperately, why? Isn't that a lot of work every time you add a file?
Does anyone have examples of large CMake projects that I can use as a guide?
Is there ANYTHING else I can improve?
Thanks!
Does every directory NEED a CMakeLists file
No, that is not necessary.
It's probably a good idea to have a CMakeLists.txt for each submodule and library - and one in the root for the project itself.
Do I need to provide every directory containing source files, or can I have it search automatically for source and header files in directories?
Firstly, see the answer to your question 3.
Secondly, I don't see why you'd want to search for header files. Simply specify the include directories.
Finally, if you want to use globbing, it is possible to put all your source files under a single directory, and use a single glob.
I also see that a lot of other CMake projects provide each source ... file seperately, why?
This is what the docs say:
Note
We do not recommend using GLOB to collect a list of source files from your source tree. If no CMakeLists.txt file changes when a source is added or removed then the generated build system cannot know when to ask CMake to regenerate. The CONFIGURE_DEPENDS flag may not work reliably on all generators, or if a new generator is added in the future that cannot support it, projects using it will be stuck. Even if CONFIGURE_DEPENDS works reliably, there is still a cost to perform the check on every rebuild.
... each header file separately, why?
I've never seen this.
Is there ANYTHING else I can improve?
Use target_include_directories instead of include_directories. In general, always use target_X directives.
The problem is solved, it is due to other dependency of my project, it has nothing wrong with cmake. Thanks for everyone trying to help in the question.
Here is my project tree Tree 1:
project
| + src
| | + other_src
| | | - abc.cpp
| | | - abc.h
| | - main.cpp
| - CMakeLists.txt
3rd_party
| + pcap
| | - pcap.h
| - pcap.h
Inside my CMakeLists.txt, I do:
include_directories("/path/to/3rd_party")
Inside my abc.cpp, I have:
#include "pcap.h"
Then I do cmake and make. I get error pcap.h: No such file or directory
I then change my project tree Tree 2:
project
| + src
| | - abc.cpp
| | - abc.h
| | - main.cpp
| - CMakeLists.txt
3rd_party
| + pcap
| | - pcap.h
| - pcap.h
Without modifying my CMakeLists.txt, I do cmake and make again. The header file is found.
How can I build this project while my source code is placed in different folders?
I am currently starting a new project using C++ and CMake,
in my last project I organized the code the following:
src
|--foo
| |--bar.cpp
| |--bar.hpp
| |--CMakeLists.txt
|--baz
| |--anotherFoo
| | |--Bahama.cpp
| | |--Bahama.hpp
| | |--CMakeLists.txt
| |--baz.cpp
| |--baz.hpp
| |--CMakeLists.txt
|--CMakeLists.txt
so every subdirectory got its own CMakeLists.txt, which was included as library from other CMakeList files.
Now I want to separate the .hpp and the .cpp files.
Something like this:
src
|--foo
| |--bar.cpp
| |--CMakeLists.txt
|--baz
| |--anotherFoo
| | |--Bahama.cpp
| | |--CMakeLists.txt
| |--baz.cpp
| |--CMakeLists.txt
|--CMakeLists.txt
include
|--foo
| |--bar.hpp
| |--CMakeLists.txt
|--baz
| |--anotherFoo
| | |--Bahama.hpp
| | |--CMakeLists.txt
| |--baz.hpp
| |--CMakeLists.txt
|--CMakeLists.txt
What I am supposed to do with the CmakeLists files?
Do I also need a CMakeLists file in every subdirectory, like I did in my example above? Or is there another way to do this?
What do I write in this CMake files
In the future I also want to add documentation with doxygen, how can I enable Doxygen support via Cmake in a structure like this?
should also every subdirectory get its own?
I'm trying to set up a test project looking like my own project just to get things working first and it looks like this:
/MainProject/inc/main.h
/MainProject/src/main.cpp
/LibProject/inc/test.h
/LibProject/src/test.cpp
I've found some tutorials, but I cant find out how to set up this when I have the inc and src folder? How would the CMakeLists.txt files look? Would I have one in /, one in each of the project folders? It seems like I dont need to have one in the inc and src folders?
You need a CMakeLists.txt for each source subdirectory. Your structure should look something like this:
root
|-MainProject
| |-inc
| | '-main.h
| |-src
| | |-main.cpp
| | '-CMakeLists.txt
| '-CMakeLists.txt
|-LibProject
| |-inc
| | '-test.h
| |-src
| | |-test.cpp
| | '-CMakeLists.txt
| '-CMakeLists.txt
'-CMakeLists.txt
Content of root/CMakeLists.txt:
project(MyProject)
add_subdirectory(MainProject)
add_subdirectory(LibProject)
Content of LibProject/CMakeLists.txt and MainProject/CMakeLists.txt:
add_subdirectory(src)
Content of LibProject/src/CMakeLists.txt:
# Notice name prefix of this variable, set by CMake according
# to value given with "project()" in the root CMakeLists.txt.
include_directories(${MyProject_SOURCE_DIR}/LibProject/inc)
add_library(LibProject test.cpp)
Content of MainProject/src/CMakeLists.txt:
include_directories(${MyProject_SOURCE_DIR}/MainProject/inc)
# I assume you want to use LibProject as a library in MainProject.
include_directories(${MyProject_SOURCE_DIR}/LibProject/inc)
link_directories(${MyProject_SOURCE_DIR}/LibProject/src)
add_executable(MainProject main.cpp)
target_link_libraries(MainProject LibProject)
Then configure and build with:
$ cd root
$ mkdir build
$ cd build
$ cmake ..
$ make
You could do it like following.
CMakeLists.txt in your MainProject directory:
project(MainProject)
add_subdirectory(LibProject/src)
add_subdirectory(MainProject/src)
CMakeLists.txt in your LibProject/src directory:
include_directories(${PROJECT_SOURCE_DIR}/LibProject/inc/)
add_library(LibProject test.cpp)
CMakeLists.txt in your MainProject/src directory:
include_directories(${PROJECT_SOURCE_DIR}/MainProject/inc/)
add_executable(MainProject main.cpp)
target_link_libraries(MainProject LibProject)
In my case I wanted to do it with a single CMakeList. And it worked for me. I add my solution in case it serves to anyone.
This is what I did in my case:
My structure:
Project
|CMakeLists.txt
|-src
| |*.cpp
| |*.c
|-include
| |*.hpp
| |*.h
My CMakeLists.txt have to main parts:
include_directories(
${PROJECT_SOURCE_DIR}/include
${PROJECT_SOURCE_DIR}/src
)
^ Enables .cpp files to add headers in the include folder.
file(GLOB all_SRCS
"${PROJECT_SOURCE_DIR}/include/*.h"
"${PROJECT_SOURCE_DIR}/include/*.hpp"
"${PROJECT_SOURCE_DIR}/src/*.cpp"
"${PROJECT_SOURCE_DIR}/src/*.c"
)
^ Just add whatever is in those folders.
add_executable(MyTarget ${all_SRCS})
^ Build the target from the list of all sources
PS: if you want to see the full CMakeLists.txt go the the project link NEGU93/ForbiddenDesert.