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recipes/packages/l/libsdl3/xmake.lua  view on Meta::CPAN

-- Local override of the xmake-repo package recipe for libsdl3.
--
-- Deviations from packages/l/libsdl3/xmake.lua in xmake-repo:
--   * builds sdl3 v 3.4.18
--   * gates the add_extsources() system path on a minimum version
--   * declares a Windows/vcpkg extsource; upstream declares none on Windows
-- Keep this file in sync with the upstream recipe when bumping versions.
--
package("libsdl3")
    set_homepage("https://www.libsdl.org/")
    set_description("Simple DirectMedia Layer")
    set_license("zlib")

    -- Oldest system SDL3 we will link against. Bump this together with the 3.4.18
    -- add_versions() entry below; the two are the same release and must not drift.
    local _MIN_SYSTEM_VERSION = "3.4.18"

    if is_plat("mingw") and is_subhost("msys") then
        add_extsources("pacman::SDL3")
    elseif is_plat("linux") then
        add_extsources("pacman::sdl3", "apt::libsdl3-dev")
    elseif is_plat("macosx") then
        add_extsources("brew::sdl3")
    elseif is_plat("windows") then
        add_extsources("vcpkg::sdl3")
    end

    -- add_extsources() only says *where* to look, never *which versions are
    -- acceptable*, so xmake happily resolves apt::libsdl3-dev on Ubuntu 25.10
    -- (3.4.2) or a stale brew/vcpkg tree and reports success. The extension
    -- libraries are built from source against 3.4.18 headers, so a system core
    -- older than that mixes two ABIs in one link and breaks at runtime rather
    -- than at configure time.
    --
    -- The probe below mirrors the candidate list xmake's own fallback uses
    -- (extsources, then the bare package name -- @see
    -- core/package/package.lua:1978-1998), so the only thing it changes is which
    -- versions are accepted. The bare name is self:name(), i.e. "libsdl3", while
    -- the vcpkg port is "sdl3", so bare-name probing never reaches vcpkg; the
    -- explicit vcpkg::sdl3 extsource declared above is what puts vcpkg (and this
    -- gate) on the Windows candidate list at all.
    on_fetch(function (self, opt)
        if not opt.system then
            -- Not a system install: let the normal from-xmake-repo path run.
            return
        end

        local semver = import("core.base.semver")
        local names = {}
        if not self:is_thirdparty() then
            table.join2(names, self:extsources())
        end
        table.insert(names, self:name())

        for _, name in ipairs(names) do
            -- self:find_package() rather than the global find_package(): it
            -- defaults to system-only for non-xmake:: names, which is what the
            -- fallback below uses, so we test the same package it would pick.
            local fetchinfo = self:find_package(name, {system = true})
            if fetchinfo then
                local found = fetchinfo.version
                -- pkgconfig-style managers report a plain semver; vcpkg reports
                -- "<semver>-<portrevision>" (libsdl3_3.4.18-1_x64-windows.list).
                -- semver reads that as a 3.4.18 pre-release, so a perfectly
                -- current vcpkg SDL3 would look older than it is. Drop the port
                -- revision before comparing.
                local comparable = found and found:gsub("%-%d+$", "")
                -- try() returns the try-function's return values directly, not
                -- (ok, result) -- @see core/sandbox/modules/try.lua:132 -- so an
                -- unparseable version arrives here as nil rather than false.
                local satisfies = try {
                    function () return semver.satisfies(comparable, ">=" .. _MIN_SYSTEM_VERSION) end
                }
                if satisfies then
                    return fetchinfo
                end
                -- Returning false (not nil) is what disables xmake's extsource
                -- fallback -- @see core/package/package.lua _fetch_library -- so
                -- the too-old package is skipped and we build the pinned release
                -- instead. Returning nil here would hand it straight back.
                print(string.format("libsdl3: system SDL3 %s is older than %s, building from source",
                      found or "of unknown version", _MIN_SYSTEM_VERSION))
                return false
            end
        end
    end)

    add_urls("https://www.libsdl.org/release/SDL3-$(version).zip",
             "https://github.com/libsdl-org/SDL/releases/download/release-$(version)/SDL3-$(version).zip", { alias = "archive" })
    add_urls("https://github.com/libsdl-org/SDL.git", { alias = "github" })

    add_versions("archive:3.4.18", "9cd42377704398796071b8597cd7e21da254a43bad98c4199739647adc13fa6f")
    add_versions("archive:3.4.16", "5f399fdfbc040169ef4418a3cb99ccc5a0641681f7ccc1da66eeec3c97fa4076")
    add_versions("archive:3.4.12", "3d4de8967a49c0451e775a0c1e9022092c19fdef41ba38a83fcf031c5a6496e2")
    add_versions("archive:3.4.4", "6bd4fbb665f77899a488b381c5b6e9681fc57c60b669738f985fea714f3456c5")
    add_versions("archive:3.4.2", "4954d436c95c42aa258d4eb3fb95f8ecc5d7a3dc411f0f41ac2692d34b9b9e9c")
    add_versions("archive:3.4.0", "9ac2debb493e0d3e13dbd2729fb91f4bfeb00a0f4dff5e04b73cc9bac276b38d")
    add_versions("archive:3.2.28", "24a30069af514a6c6b773bdc8ccca8b321661b251381acc1daeebf8c8f4a109a")
    add_versions("archive:3.2.26", "739356eef1192fff9d641c320a8f5ef4a10506b8927def4b9ceb764c7e947369")
    add_versions("archive:3.2.22", "3d60068b1e5c83c66bb14c325dfef46f8fcc380735b4591de6f5e7b9738929d1")
    add_versions("archive:3.2.16", "0cc7430fb827c1f843e31b8b26ba7f083b1eeb8f6315a65d3744fd4d25b6c373")
    add_versions("archive:3.2.14", "46a17d3ea71fe2580a7f43ca7da286c5b9106dd761e2fd5533bb113e5d86b633")
    add_versions("archive:3.2.10", "01d9ab20fc071b076be91df5396b464b4ef159e93b2b2addda1cc36750fc1f29")
    add_versions("archive:3.2.8", "7f8ff5c8246db4145301bc122601a5f8cef25ee2c326eddb3e88668849c61ddf")
    add_versions("archive:3.2.6", "665e5aa2a613affe099a38d61257ecc5ef4bf38b109d915147aa8b005399d68a")
    add_versions("archive:3.2.2", "58d8adc7068d38923f918e0bdaa9c4948f93d9ba204fe4de8cc6eaaf77ad6f82")
    add_versions("archive:3.2.0", "abe7114fa42edcc8097856787fa5d37f256d97e365b71368b60764fe7c10e4f8")

    add_versions("github:3.4.18", "release-3.4.18")
    add_versions("github:3.4.16", "release-3.4.16")
    add_versions("github:3.4.12", "release-3.4.12")
    add_versions("github:3.4.4", "release-3.4.4")
    add_versions("github:3.4.2", "release-3.4.2")
    add_versions("github:3.4.0", "release-3.4.0")
    add_versions("github:3.2.28", "release-3.2.28")
    add_versions("github:3.2.26", "release-3.2.26")