How to find and install binaries (.dll or .so) for the target

[jfulem]

Please, is there any good way how to install or copy binaries (.dll or .so files) to the build directory? These binaries come from:
add_requires() and add_packages()

Or is it possible to get the target dependencies pointing to xmake/xrepo packages (installation)?

Thank you very much for your help.

[waruqi]

run xmake install -o build will install them.

if you debug program, you can run xmake run. it will add PATH to load dll automatically.

[jfulem]

@waruqi, thank you for the previous answers. I still have some small issues when using the cmake package. One dynamic library is not copied during the installation. It never worked in cmake project.

So is there any way to get the installation directory of a package ("depthai-core") added to the target as a package. I would just add one specific .dll to the installation in before_install step. I can't find any way to get the "depthai-core" package install or linkdir where the specific .dll is located. Thank you.

target("camera")
    -- building executable
    set_kind("binary")

    -- add required packages
    add_packages("depthai-core")
    
    before_install(function (target)
        -- get the "depthai-core" installation directory
        add_installfiles("", {prefixdir = "bin"})
    end)
    ```

[star-hengxing]

target:dep("x"):installdir()

[jfulem]

target:dep("x"):installdir()

This does not work. Nothing found by target:dep()

I'm not sure why one of the dlls is not copied during the installation. My executable loads A.dll and this loads B.dll, but this one is not copied. Not sure how to resolve this :-(.

[waruqi]

you can use print to debug here.

xmake/xmake/modules/target/action/install/main.lua

Lines 48 to 72 in 9563841

	function _get_target_package_libfiles(target, opt)
	if option.get("nopkgs") then
	return {}
	end
	local libfiles = {}
	for _, pkg in ipairs(target:orderpkgs(opt)) do
	if pkg:enabled() and pkg:get("libfiles") then
	for _, libfile in ipairs(table.wrap(pkg:get("libfiles"))) do
	local filename = path.filename(libfile)
	if filename:endswith(".dll") or filename:endswith(".so") or filename:find("%.so%.%d+$") or filename:endswith(".dylib") then
	table.insert(libfiles, libfile)
	end
	end
	end
	end
	-- we can only reserve used libraries
	if project.policy("install.strip_packagelibs") then
	if target:is_binary() or target:is_shared() then
	local depends = hashset.new()
	_get_target_package_deplibs(target, depends, libfiles, target:targetfile())
	table.remove_if(libfiles, function (_, libfile) return not depends:has(path.filename(libfile)) end)
	end
	end
	return libfiles
	end

[star-hengxing]

My mistake, package use target:pkg("zlib")