Merge pull request #22 from fasiondog/master

add c++ fmt lib

packages/f/fmt/xmake.lua

@@ -0,0 +1,33 @@
+package("fmt")
+
+    set_homepage("https://fmt.dev")
+    set_description("fmt is an open-source formatting library for C++. It can be used as a safe and fast alternative to (s)printf and iostreams.")
+
+    set_urls("https://github.com/fmtlib/fmt/releases/download/$(version)/fmt-$(version).zip")
+    add_versions("6.0.0", "b4a16b38fa171f15dbfb958b02da9bbef2c482debadf64ac81ec61b5ac422440")
+    add_versions("5.3.0", "4c0741e10183f75d7d6f730b8708a99b329b2f942dad5a9da3385ab92bb4a15c")
+
+    if is_plat("linux", "macosx") then
+        add_deps("cmake")
+    end
+
+    on_install("windows", function (package)
+        os.cp("include/fmt", package:installdir("include"))
+    end)
+
+    on_install("linux", "macosx", function (package)
+        import("package.tools.cmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <fmt/format.h>
+            #include <string>
+            #include <assert.h>
+            static void test() {
+                std::string s = fmt::format("{}", "hello");
+                assert(s == "hello");
+            }
+        ]]}, {configs = {languages = "c++11"}, includes = "fmt/format.h", defines="FMT_HEADER_ONLY"}))
+    end)    
+