add libmem (#5430)

* Added libmem.

* Update xmake.lua

Minor changes

* Update xmake.lua

Removed unused flags.

* Update xmake.lua

* Update xmake.lua

Shortened description.

* Update xmake.lua

* Create xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

Optimized + fixed linux support in case missing ptrace and llvm::demangle.

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Fixed BSD and removed set_policy("compatibility.version", "3.0") as well as add_includedirs("include", { public = true })

* Fixed freebsd to bsd

* Enforce LM_EXPORT to be used for DLL/LIB

* Added missing syslinks for Ole32 (Win/MinGW) and uuid (MinGW)

Added missing syslinks for Ole32 (Win/MinGW) and uuid (MinGW)

* Added missing syslinks for Ole32 (Win/MinGW) and uuid (MinGW)

Added missing syslinks for Ole32 (Win/MinGW) and uuid (MinGW)

* Update xmake.lua

* Update xmake.lua

* Ole32 -> ole32

Ole32 -> ole32

* Ole32 -> ole32

Ole32 -> ole32

* Update xmake.lua

* Update xmake.lua

* Fixed install through add_headerfiles + Overwrote existing C test.

* Removed renudant 2nd argument , {install = true} for func add_headerfiles

* Fixed C test error.

* fix c++ exports

* Fix C++ DLL link

* Update xmake.lua

* Update xmake.lua

* Delete packages/l/libmem/patches/cxxexport.patch

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

* Update xmake.lua

---------

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

packages/l/libmem/port/xmake.lua

@@ -0,0 +1,63 @@
+add_rules("mode.debug", "mode.release")
+set_languages("c++17")
+
+add_requires("capstone", "keystone")
+
+target("libmem")
+    set_kind("$(kind)")
+
+    if is_plat("windows") and is_kind("shared") then
+        add_rules("utils.symbols.export_all", {export_classes = true, export_filter = function (symbol)
+            if symbol:find("libmem", 1, true) then
+                return true
+            end
+        end})
+    end
+    if is_plat("windows") or is_kind("shared") then
+        add_defines("LM_EXPORT")
+    end
+
+    add_packages("capstone", "keystone")
+    
+    add_headerfiles("include/(libmem/*.h)")
+    add_headerfiles("include/(libmem/*.hpp)")
+
+    add_includedirs("include")
+    add_includedirs(
+        "external/llvm/include",
+        "src/common",
+        "internal",
+        "src"
+    )
+
+    add_files(
+        "src/common/*.c",
+        "src/common/*.cpp",
+        "src/common/arch/*.c",
+        "internal/demangler/*.cpp",
+        "external/llvm/lib/Demangle/*.cpp"
+    )
+
+    if is_plat("linux", "bsd") then
+        add_syslinks("dl", "stdc++", "m")
+        if is_plat("bsd") then
+            add_syslinks("kvm", "procstat", "elf")
+        end
+
+        add_files("internal/posixutils/*.c")
+        add_files("internal/elfutils/*.c")
+
+        local arch = (is_arch("x86_64", "x64") and "x64" or "x86")
+        local prefix = path.join("src", is_plat("linux") and "linux" or "freebsd")
+        add_files(path.join(prefix, "ptrace", "*.c"))
+        add_files(path.join(prefix, "*.c"))
+        add_files(path.join(prefix, "ptrace", arch, "*.c"))
+    
+    elseif is_plat("windows", "mingw") then
+        add_syslinks("user32", "psapi", "ntdll", "shell32", "ole32")
+        if is_plat("mingw") then
+            add_syslinks("uuid")
+        end
+        add_files("internal/winutils/*.c")
+        add_files("src/win/*.c")
+    end

packages/l/libmem/xmake.lua

@@ -0,0 +1,53 @@
+package("libmem")
+    set_homepage("https://github.com/rdbo/libmem")
+    set_description("Cross-platform game hacking library for C, C++, Rust, and Python, supporting process/memory hacking, hooking, detouring, and DLL/SO injection.")
+    set_license("AGPL-3.0")
+
+    add_urls("https://github.com/rdbo/libmem/archive/refs/tags/$(version).tar.gz",
+            "https://github.com/rdbo/libmem.git")
+    add_versions("5.0.2", "99adea3e86bd3b83985dce9076adda16968646ebd9d9316c9f57e6854aeeab9c")
+
+    add_deps("capstone", "keystone")
+
+    if is_plat("windows", "mingw") then
+        add_syslinks("user32", "psapi", "ntdll", "shell32", "ole32")
+        if is_plat("mingw") then
+            add_syslinks("uuid")
+        end
+    elseif is_plat("linux") then
+        add_syslinks("dl", "m")
+    elseif is_plat("bsd") then
+        add_syslinks("dl", "kvm", "procstat", "elf", "m")
+    end
+
+    on_load(function(package)
+        if package:is_plat("windows") or package:config("shared") then
+            package:add("defines", "LM_EXPORT")
+        end
+    end)
+
+    on_install("windows", "linux", "bsd", function (package)
+        os.cp(path.join(package:scriptdir(), "port", "xmake.lua"), "xmake.lua")
+        import("package.tools.xmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:check_csnippets({test = [[
+            #include <libmem/libmem.h>
+            void test() {
+                lm_thread_t resultThread;
+                lm_bool_t result = LM_GetThread(&resultThread);
+            }
+        ]]}, {configs = {languages = "c11"}}))
+
+        assert(package:check_cxxsnippets({test = [[
+            #include <libmem/libmem.hpp>
+            #include <vector>
+            #include <optional>
+            using namespace libmem;
+            void test() {
+                std::optional<Thread> currentThread = GetThread();
+                std::optional<std::vector<Thread>> threads = EnumThreads();
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)