Add zlib-ng (#740)

packages/z/zlib-ng/xmake.lua

@@ -0,0 +1,27 @@
+package("zlib-ng")
+
+    set_homepage("https://github.com/zlib-ng/zlib-ng")
+    set_description("zlib replacement with optimizations for next generation systems.")
+
+    add_urls("https://github.com/zlib-ng/zlib-ng.git")
+
+    add_versions("2.0.5", "c69f78bc5e18a0f6de2dcbd8af863f59a14194f0")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        local configs = {"-DZLIB_COMPAT=ON"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        table.insert(configs, "-DINC_INSTALL_DIR=" .. package:installdir("include"))
+        table.insert(configs, "-DLIB_INSTALL_DIR=" .. package:installdir("lib"))
+        if package:config("shared") then
+            table.insert(configs, "-DBUILD_SHARED_LIBS=on")
+        else
+            table.insert(configs, "-DBUILD_SHARED_LIBS=off")
+        end
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("inflate", {includes = "zlib.h"}))
+    end)