Add ck (#821)

* Add ck

* Update xmake.lua

Co-authored-by: ruki <waruqi@gmail.com>

packages/c/ck/xmake.lua

@@ -0,0 +1,23 @@
+package("ck")
+    set_homepage("http://concurrencykit.org/")
+    set_description("Concurrency primitives, safe memory reclamation mechanisms and non-blocking (including lock-free) data structures designed to aid in the research, design and implementation of high performance concurrent systems developed in C99+.")
+
+    add_urls("https://github.com/concurrencykit/ck/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/concurrencykit/ck.git")
+    add_versions("0.7.1", "97d2a21d5326ef79b4668be2e6eda6284ee77a64c0981b35fd9695c736c3d4ac")
+
+    on_install("macosx", "linux", function (package)
+        local configs = {}
+        if package:config("shared") then
+            table.insert(configs, "--disable-static")
+        end
+        local cxflags
+        if package:is_plat("linux") and package:config("pic") ~= false then
+            cxflags = "-fpic"
+        end
+        import("package.tools.autoconf").install(package, configs, {cxflags = cxflags})
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("ck_barrier_combining_init", {includes = "ck_barrier.h"}))
+    end)