Find quickjs-ng with CMake or pkg-config

[CarterLi]

Hello! I'd like to integrate quickjs to my project. My project uses find_package or pkg_search_module of CMake to find dependencies. Does quickjs-ng support that?

[bnoordhuis]

To the best of my knowledge: yes. Several projects consume quickjs-ng through cmake.

[gistrec]

quickjs-ng appears to support an installed CMake package, but not pkg-config

After installing it with CMake, the exported target is qjs, and the export is installed under:

${prefix}/lib/cmake/quickjs/

So the consumer side should likely be:

find_package(qjs CONFIG REQUIRED)
target_link_libraries(your_target PRIVATE qjs)

The target name is qjs.

I would not expect pkg_search_module() / pkg_check_modules() to work with the current upstream CMake build, because I do not see a generated or installed .pc file

For vendored/in-tree use without installing, FetchContent or add_subdirectory is probably the cleanest option:

include(FetchContent)

FetchContent_Declare(
    quickjs
    GIT_REPOSITORY https://github.com/quickjs-ng/quickjs.git
    GIT_TAG main
)

FetchContent_MakeAvailable(quickjs)

target_link_libraries(your_target PRIVATE qjs)

One small caveat: the installed export is named qjsConfig, but it is placed in a cmake/quickjs directory. If plain find_package(qjs CONFIG REQUIRED) does not find it automatically with your install prefix, point CMake directly at the config directory, for example via CMAKE_PREFIX_PATH or qjs_DIR

[CarterLi]

find_package(qjs CONFIG REQUIRED)

Doesn't work. Tested in MSYS2-CLANG64

[cmake] CMake Error at CMakeLists.txt:1698 (find_package):
[cmake]   Could not find a package configuration file provided by "qjs" with any of
[cmake]   the following names:
[cmake] 
[cmake]     qjs.cps
[cmake]     qjsConfig.cmake
[cmake]     qjs-config.cmake
[cmake] 
[cmake]   Add the installation prefix of "qjs" to CMAKE_PREFIX_PATH or set "qjs_DIR"
[cmake]   to a directory containing one of the above files.  If "qjs" provides a
[cmake]   separate development package or SDK, be sure it has been installed.

It does work after mv ${prefix}/lib/cmake/quickjs ${prefix}/lib/cmake/qjs however

[CarterLi]

For vendored/in-tree use without installing, FetchContent or add_subdirectory is probably the cleanest option

Linux package managers don't like embedding 3rd-party libs: fastfetch-cli/fastfetch#523 (comment)