gloo: add package. (#8172)

* gloo: add package.

* update.

packages/g/gloo/xmake.lua

@@ -0,0 +1,67 @@
+package("gloo")
+    set_homepage("https://github.com/pytorch/gloo")
+    set_description("Collective communications library with various primitives for multi-machine training.")
+    set_license("BSD-3-Clause")
+
+    add_urls("https://github.com/pytorch/gloo.git")
+
+    add_versions("2025.07.29", "1dbd7e931568a5e3d6da16c0f2058f0606039640")
+
+    add_configs("mpi",   {description = "Build mpi transport.", default = false, type = "boolean"})
+    add_configs("redis", {description = "Support using Redis for rendezvous.", default = false, type = "boolean"})
+    add_configs("libuv", {description = "Build libuv transport.", default = false, type = "boolean"})
+
+    if is_plat("linux") then
+        add_configs("openssl", {description = "Build TCP-TLS transport with OpenSSL.", default = false, values = {false, "dynlink", "dynload"}})
+    end
+
+    if is_plat("linux", "bsd") then
+        add_syslinks("pthread")
+    end
+
+    add_deps("cmake")
+    on_check(function (package)
+        assert(package:is_arch64(), "Gloo can only be built on 64-bit systems.")
+    end)
+
+    on_load(function (package)
+        if package:config("redis") then
+            package:add("deps", "hiredis")
+        end
+        if package:config("libuv") then
+            package:add("deps", "libuv")
+        end
+        if package:config("openssl") then
+            package:add("deps", "openssl")
+        end
+        if package:config("mpi") then
+            package:add("deps", "mpich")
+        end
+    end)
+
+    on_install("!windows and !mingw", function (package)
+        local configs = {}
+        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_REDIS=" .. (package:config("redis") and "ON" or "OFF"))
+        table.insert(configs, "-DUSE_LIBUV=" .. (package:config("libuv") and "ON" or "OFF"))
+        table.insert(configs, "-DUSE_MPI=" .. (package:config("mpi") and "ON" or "OFF"))
+        local openssl = package:config("openssl")
+        if openssl == "dynlink" then
+            table.insert(configs, "-DUSE_TCP_OPENSSL_LINK=ON")
+        elseif openssl == "dynload" then
+            table.insert(configs, "-DUSE_TCP_OPENSSL_LOAD=ON")
+        end
+
+        io.replace("gloo/types.h", "#include <iostream>", "#include <iostream>\n#include <cstdint>", {plain = true})
+
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                gloo::rendezvous::Context ctx(1, 2, 3);
+            }
+        ]]}, {configs = {languages = "c++17"}, includes = "gloo/rendezvous/context.h"}))
+    end)