I try to create a Flatpak package for my application, that is called AppName afterwards. Its uses CMake/make for configuration and compilation.
When I compile normally my application (without using Flatpak), it uses a configuration file that has to be placed in the $HOME/.local/share/AppName/config folder.
I place this file in this folder using this CMake command
install(FILES ${PROJECT_SOURCE_DIR}/config/config.ini DESTINATION $ENV{HOME}/.local/share/AppName)
It works well. Now, when when I create the Flatpak package, it looks for the configuration file in $HOME/.var/app/org.flatpak.AppName/data/AppName/config.ini"
How could I design my CMakeLists.txt so that it uses $ENV{HOME}/.local/share/AppName when I do not use Flatpak and $HOME/.var/app/org.flatpak.AppName/data/AppName when I create a Flatpak package?
In short, I am looking for a CMake snippet like
if(FLATPAK)
install(FILES ${PROJECT_SOURCE_DIR}/config/config.ini DESTINATION $ENV{HOME}/.var/app/org.flatpak.AppName/data/AppName)
else()
install(FILES ${PROJECT_SOURCE_DIR}/config/config.ini DESTINATION $ENV{HOME}/.local/share/AppName)
endif()
Related
I have a Library Project that is exported so consumers can use it like so:
find_package(myLibrary)
target_link_libraries(theirLibrary PUBLIC myNamespace::myLibrary)
MyLibrary is the main product but it lives alongside two other projects in our repository, and the layout looks like this:
MyRepository/
MyLibrary/
CMakeLists.txt
include/ //public headers
MyLibrary/ //sources and private headers
MyDependentLibrary/ //another library project
CMakeLists.txt
etc..
MyExample //executable project
CMakeLists.txt
etc..
The dependencies for each project are like so:
MyLibrary: None
MyDependentLibrary: MyLibrary
MyExample: MyLibrary, MyDependentLibrary
MyLibrary and MyDependentLibrary are both set up with install and build directory exports to be compatible with the find_package() command. So to build everthing you:
configure/build MyLibrary
configure MyDependantLibrary setting MyLibrary_DIR when prompted, then build it
configure MyExample setting MyLibrary_DIR and MyDependentLibrary_DIR when prompted, then build it
This workflow is great, most of the time we only want to package MyLibrary without the other projects when we send to customers, but occasionally we want to give them the source for all 3 projects so they have more examples to look at.
For that reason I would love to add a top level CMakeLists.txt file that would I imagine look something like this:
cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
project(MyCombinedProject VERSION 1.0.0 LANGUAGES CXX)
add_subdirectory(MyLibrary)
add_subdirectory(MyDependentLibrary)
add_subdirectory(MyExample)
However this doesn't work. When configuring the "combined" project, MyDependentLibrary is unable to find MyLibrary_DIR, which makes sense, as MyLibrary hasn't been built yet.
Is there a way to add an export to each of the libraries so they can be found when added in this manner in addition to the find_package()? I really don't want to move any CMake code required to build MyLibrary into the top level CMakeLists.txt, as 90% of the time it will be delivered on its own.
You may ship the sources of your library (MyLibrary) with a pseudo config file, which just provides myNamespace::myLibrary target as alias for myLibrary.
MyLibrary/CMakeLists.txt:
# Assuming you create a library
add_library(mylibrary ...)
# Install and export it
install(TARGETS mylibrary EXPORT mylibraryTargets ...)
# and install the file which describes this installation
install(EXPORT mylibraryTargets NAMESPACE myNamespace ...)
# Then you install config file for your library:
install(FILES myLibrary.cmake ...)
# Then just set `MyLibrary_DIR` variable to point into in-source version of config file.
set(MyLibrary_DIR CACHE INTERNAL "A directory with the in-source config file"
${CMAKE_CURRENT_SOURCE_DIR}/cmake
)
And write that in-source config file as follows:
MyLibrary/cmake/MyLibraryConfig.cmake:
add_library(myNamespace::mylibrary ALIAS mylibrary)
That way, find_package(MyLibrary) will work if it is issued after configuring sources of your library (add_subdirectory(MyLibrary)).
I am completely stuck :/. I created a simple test "library" with two
files fruits.cpp and fruits.h.
Then I created this CMakeLists.txt (following this tutorial)
cmake_minimum_required(VERSION 3.16)
project(fruits_Lib)
add_library(fruits_Lib STATIC)
target_sources(fruits_Lib
PRIVATE
"fruits.cpp"
)
set(include_dest "include/fruits-1.0")
set(main_lib_dest "lib/fruits-1.0")
set(lib_dest "${main_lib_dest}/${CMAKE_BUILD_TYPE}")
target_include_directories(fruits_Lib
PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>"
"$<INSTALL_INTERFACE:${include_dest}>"
)
add_library(fruits::fruits ALIAS fruits_Lib)
install(TARGETS fruits_Lib EXPORT fruits DESTINATION "${main_lib_dest}")
install(FILES "include/fruits/fruits.h" DESTINATION "${include_dest}")
install(EXPORT fruits DESTINATION "${lib_dest}")
This works in that it compiles and installs etc, and I can even use
it as a add_subdirectory in a parent project.
In fact, the files that this installs are:
lib/fruits-1.0/libfruits_Lib.a
lib/fruits-1.0/Debug/fruits-debug.cmake
lib/fruits-1.0/Debug/fruits.cmake
lib/fruits-1.0/libfruits_Libd.a
lib/fruits-1.0/Release/fruits-release.cmake
lib/fruits-1.0/Release/fruits.cmake
include/fruits-1.0/fruits.h
However, when I try to do the following in the parent project:
find_package(fruits CONFIG REQUIRED)
I get the error:
CMake Error at CMakeLists.txt:21 (find_package):
Could not find a package configuration file provided by "fruits" with any
of the following names:
fruitsConfig.cmake
fruits-config.cmake
Those files are definitely not created or installed by the above CMakeLists.txt :/.
What am I doing wrong? How can I create a static library that provides such config file
so that I can use it (after installation) with a find_package(fruits CONFIG) ?
I think find_package() is for locating and using external and already installed components/libraries so you'll have to install the library first.
I am trying to build a Debian package using CPack from a catkin workspace.
This project uses ROS in some part of the implementation.
The package gets build, but the problem I'm having is that ROS adds some files to the .deb.
.catkin
local/.rosinstall
local/env.sh
local/setup.{sh,bash,zsh}
local/_setup_util.py
I'm thinking there's got to be a way to either ignore those files from installing, or simply remove them from the .deb output, but I can't seem to find any option for it.
The CMake configuration looks like this:
INSTALL(TARGETS ${PROJECT_NAME}_node DESTINATION bin)
INSTALL(FILES doc/${PROJECT_NAME}.yaml DESTINATION share)
INSTALL(FILES doc/${PROJECT_NAME}.service DESTINATION lib/systemd/system)
SET(CPACK_DEBIAN_PACKAGE_MAINTAINER "Maintainer")
SET(CPACK_GENERATOR "DEB")
I asked the question in answer.ros as well. Short answer: add -DCATKIN_BUILD_BINARY_PACKAGE=1 to catkin_make.
or SET(CATKIN_BUILD_BINARY_PACKAGE true) in CMakeLists.txt
I have the simplest possible c-library which builds and is packed using the following CMakeLists.txt:
cmake_minimum_required(VERSION 3.5)
project (libfoo C)
add_library(foo SHARED impl.c)
target_link_libraries(foo)
install(TARGETS foo LIBRARY DESTINATION lib/)
install(FILES public_header.h DESTINATION include/libfoo)
set(CPACK_GENERATOR "TGZ")
include(CPack)
Working example is located here: https://github.com/bjarkef/cmake-simple/tree/master/libfoo
I execute mkdir -p build; (cd build/; cmake ../; make all package;) to build a .tar.gz package with the compiled shared library along with its public header file. This is all working fine.
Now I wish to modify the CMakeLists.txt to create the FooConfig.cmake and FooConfigVersion.cmake files needed for CMake find_package in a different project to find the foo library. How do I do this?
I have discovered I should used the CMakePackageConfigHelpers: configure_package_config_file and write_basic_package_version_file, and I should create a FooLibraryConfig.cmake.in file. However I cannot figure out how to put it all together.
Note that it is important the the resulting .cmake files only contains relative paths.
I have cmake module included in the top level CmakeList.txt:
# Generate and install package config files
include(PackageConfigInstall)
Within the generic PackageConfigInstall.cmake file, the config files are created from the cmake.in files, and installed. This module can be reused for other packages.
include(CMakePackageConfigHelpers)
# Generate package config cmake files
set(${PACKAGE_NAME}_LIBRARY_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}${PACKAGE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX})
configure_package_config_file(${PACKAGE_NAME}-config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_DIR}/${PACKAGE_NAME}
PATH_VARS LIB_INSTALL_DIR INCLUDE_INSTALL_DIR APP_INCLUDE_INSTALL_DIR )
configure_file(${PACKAGE_NAME}-config-version.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake #ONLY)
# Install package config cmake files
install(
FILES
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake
DESTINATION
${CMAKE_INSTALL_DIR}/${PACKAGE_NAME}
COMPONENT
devel
)
You'll need a package file for your library, such as your_lib-config.cmake.in, which will become your_lib-config.cmake. This will contain the include and library variables that can be used.
get_filename_component(YOUR_LIB_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
# flag required by CMakePackageConfigHelpers
#PACKAGE_INIT#
set_and_check(YOUR_LIB_INCLUDE_DIR #PACKAGE_YOUR_LIB_INCLUDE_INSTALL_DIR#/hal)
set_and_check(YOUR_LIB_LIBRARY #PACKAGE_LIB_INSTALL_DIR#/#CMAKE_STATIC_LIBRARY_PREFIX##PROJECT_NAME_LIB##CMAKE_STATIC_LIBRARY_SUFFIX#)
set_and_check(YOUR_LIB_LIBRARIES #PACKAGE_LIB_INSTALL_DIR#/#CMAKE_STATIC_LIBRARY_PREFIX##PROJECT_NAME_LIB##CMAKE_STATIC_LIBRARY_SUFFIX#)
You'll also want a config-version.cmake.in file like this:
set(PACKAGE_VERSION #PACKAGE_VERSION#)
# Check whether the requested PACKAGE_FIND_VERSION is compatible
if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
set(PACKAGE_VERSION_COMPATIBLE FALSE)
else()
set(PACKAGE_VERSION_COMPATIBLE TRUE)
if ("${PACKAGE_VERSION}" VERSION_EQUAL "${PACKAGE_FIND_VERSION}")
set(PACKAGE_VERSION_EXACT TRUE)
endif()
endif()
There's quite a bit to the packaging scripts to get it all to work just right. I went through a lot of trial and error to finally get something that works on different targets (both linux server and embedded target). I might have left something out, so please just comment and I'll update answer.
I'd like to install a custom file which is generated during compilation of a CMake project:
In my project the file SampleDictionary_rdict.pcm is generated by a command from an external module during compilation, and I would like to have it copied to $CMAKE_INSTALL_PREFIX/lib with make install
The issue I'm running into is all the variants of install(...) I've tried require the file to exist before compilation.
The command from an external module that generates the file is:
ROOT_GENERATE_DICTIONARY(
SampleDictionary
...
)
This generates SampleDictionary_rdict.pcm in my build directory.
For example, if I try to add:
install(TARGETS SampleDictionary DESTINATION "${CMAKE_INSTALL_PREFIX}/lib")
to the end of my CMakeLists.txt I have the issue of the file not existing.
install(TARGETS ... is used to install targets built within the project. You want to install the file SampleDictionary_rdict.pcm so you need a variant for files: install(FILES ...