libgit2cpp: add package (#6142)

* libgit2cpp: add package

* fix bsd

* fix shared link

* disable mingw shared

packages/l/libgit2cpp/xmake.lua

@@ -0,0 +1,58 @@
+package("libgit2cpp")
+    set_homepage("https://github.com/AndreyG/libgit2cpp")
+    set_description("C++ wrapper for libgit2")
+
+    add_urls("https://github.com/AndreyG/libgit2cpp.git", {submodules = false})
+    add_versions("2024.06.09", "e9651575e388d7e5832ff64955b2f3304bac33db")
+
+    add_configs("boost", {description = "Use boost", default = false, type = "boolean"})
+    if is_plat("windows", "mingw") then
+        add_configs("shared", {description = "Build shared library.", default = false, type = "boolean", readonly = true})
+    end
+
+    add_deps("cmake")
+    if is_subhost("windows") then
+        add_deps("pkgconf")
+    else
+        add_deps("pkg-config")
+    end
+    add_deps("libgit2")
+
+    on_check("android", function (package)
+        if package:is_arch("armeabi-v7a") then
+            local ndk = package:toolchain("ndk")
+            local ndkver = ndk:config("ndkver")
+            assert(ndkver and tonumber(ndkver) > 22, "package(libgit2) deps(pcre2) require ndk version > 22")
+        end
+    end)
+
+    on_load(function (package)
+        if package:config("boost") then
+            package:add("deps", "boost")
+        end
+    end)
+
+    on_install(function (package)
+        io.replace("CMakeLists.txt", "STATIC", "", {plain = true})
+
+        local configs = {"-DBUNDLE_LIBGIT2=OFF", "-DBUILD_LIBGIT2CPP_EXAMPLES=OFF"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DUSE_BOOST=" .. (package:config("boost") and "ON" or "OFF"))
+
+        local opt = {}
+        if package:config("shared") then
+            opt.packagedeps = "libgit2"
+        end
+        import("package.tools.cmake").install(package, configs, opt)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                const char* dir = ".";
+                git::Repository repo{dir};
+                repo.index();
+            }
+        ]]}, {configs = {languages = "c++17"}, includes = "git2cpp/repo.h"}))
+    end)