add mpmcqueue (#804)

* Create xmake.lua

* Update xmake.lua

packages/m/mpmcqueue/xmake.lua

@@ -0,0 +1,36 @@
+package("mpmcqueue")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/rigtorp/MPMCQueue")
+    set_description("A bounded multi-producer multi-consumer concurrent queue written in C++11")
+
+    add_urls("https://github.com/rigtorp/MPMCQueue/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/rigtorp/MPMCQueue.git")
+    add_versions("v1.0", "f009ef10b66f2b8bc6e3a4f50577efbdfea0c163464cd7de368378f173007b75")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        io.replace("CMakeLists.txt", [[if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+	if (MSVC)
+		add_compile_options(/permissive- /W4 /wd4172 /wd4324 /wd4530)
+	else()
+		add_compile_options(-Wall -Wextra -Wpedantic)
+	endif()
+
+	find_package(Threads REQUIRED)
+
+	add_executable(MPMCQueueExample src/MPMCQueueExample.cpp)
+	target_link_libraries(MPMCQueueExample MPMCQueue Threads::Threads)
+
+	add_executable(MPMCQueueTest src/MPMCQueueTest.cpp)
+	target_link_libraries(MPMCQueueTest MPMCQueue Threads::Threads)
+
+	enable_testing()
+	add_test(MPMCQueueTest MPMCQueueTest)
+endif()]], "", {plain = true})
+        import("package.tools.cmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cxxtypes("rigtorp::mpmc::Queue<int>", {configs = {languages = "c++14"}, includes = "rigtorp/MPMCQueue.h"}))
+    end)