Add The Boehm-Demers-Weiser conservative Garbage Collector (#2339)

* Create Boehm

Add the Boehm-Demers-Weiser conservative Garbage Collector

* Delete Boehm

* Add Boehm GC

* Delete directory to apply fixed code.

* Add files via upload

* Add config with assert.

* Fix C++ standard version.

* Remove unneeded C++ version.

* Fix stupid

* Fix mistake

* fix stupid with the help of lynix

* Update xmake.lua

* Update to reflect review.

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

---------

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

packages/b/bdwgc/xmake.lua

@@ -0,0 +1,29 @@
+package("bdwgc")
+    set_homepage("https://www.hboehm.info/gc/")
+    set_description("The Boehm-Demers-Weiser conservative C/C++ Garbage Collector (bdwgc, also known as bdw-gc, boehm-gc, libgc)")
+
+    add_urls("https://github.com/ivmai/bdwgc/-/archive/$(version).tar.gz",
+             "https://github.com/ivmai/bdwgc.git")
+
+    add_versions("v8.2.4", "18e63ab1428bd52e691da107a6a56651c161210b11fbe22e2aa3c31f7fa00ca5")
+
+    add_deps("cmake")
+
+    on_install("macosx", "linux", "android", "iphoneos", function (package)
+        local configs = {}
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs({test=[[
+        void test() {
+            GC_INIT();
+            int *ptr = GC_MALLOC(sizeof(int));
+            *ptr = 42;
+            printf("Value: %d\n", *ptr);
+            return 0;
+        }
+        ]]}),{configs = {includes = "gc.h"}})
+    end)