add jthread repo

packages/j/jthread/patches/1.3.3/cmakelist.patch

@@ -0,0 +1,13 @@
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 517e13f..3224c46 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -35,7 +35,7 @@ else ()
+ 	set(JTHREAD_COMPILE_STATIC ON CACHE BOOL "Flag indicating if a static library should be built, or a dynamic one")
+ endif ()
+
+-if (NOT MSVC OR JTHREAD_COMPILE_STATIC)
++if (NOT MSVC AND JTHREAD_COMPILE_STATIC)
+ 	set(JTHREAD_INSTALLTARGETS jthread-static)
+ 	add_library(jthread-static STATIC ${SOURCES} ${HEADERS})
+ 	set_target_properties(jthread-static PROPERTIES OUTPUT_NAME jthread)

packages/j/jthread/xmake.lua

@@ -0,0 +1,36 @@
+package("jthread")
+    set_homepage("https://github.com/j0r1/JThread")
+    set_description("The JThread package provides some classes to make use of threads easy on different platforms")
+    set_license("MIT")
+
+    add_urls("https://github.com/j0r1/JThread.git")
+
+    add_versions("2023.08.18", "719413043807b77448df3ba1c749798fb72ee459")
+    add_deps("cmake")
+
+    add_patches("1.3.3", "patches/1.3.3/cmakelist.patch", "4c5162f128f31ebee63805db1dbed0a17fc02b2661958b80468fcffc394d7f4e")
+
+    add_includedirs("include", "include/jthread")
+
+    on_install("windows", "linux", "macosx", function(package)
+
+        local configs = {}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+        if package:config("shared") then 
+            table.insert(configs, "-DJTHREAD_COMPILE_STATIC=OFF")
+            table.insert(configs, "-DJTHREAD_COMPILE_STATIC_ONLY=OFF")
+        else 
+            table.insert(configs, "-DJTHREAD_COMPILE_STATIC_ONLY=ON")
+            table.insert(configs, "-DJTHREAD_COMPILE_STATIC=ON")
+        end
+
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            using namespace jthread;
+            class TestThread : public JThread{
+            };
+        ]]}, {configs = {languages = "c++11"}, includes = "jthread.h"}))
+    end)