libseccomp: add package. (#8168)

* libseccomp: add package.

* update.

packages/l/libseccomp/xmake.lua

@@ -0,0 +1,36 @@
+package("libseccomp")
+    set_homepage("https://github.com/seccomp/libseccomp")
+    set_description("The libseccomp library provides an easy to use, platform independent, interface to the Linux Kernel's syscall filtering mechanism.")
+    set_license("LGPL-2.1")
+
+    add_urls("https://github.com/seccomp/libseccomp/releases/download/v$(version)/libseccomp-$(version).tar.gz",
+             "https://github.com/seccomp/libseccomp.git")
+    add_versions("2.6.0", "83b6085232d1588c379dc9b9cae47bb37407cf262e6e74993c61ba72d2a784dc")
+
+    add_configs("tools", {description = "Build tools.", default = false, type = "boolean"})
+
+    add_deps("gperf")
+    on_load(function (package)
+        if package:gitref() then
+            package:add("deps", "autotools")
+        end
+    end)
+
+    on_install("linux", function (package)
+        local configs = {
+            "--disable-dependency-tracking",
+            "--disable-python"
+        }
+
+        local subdirs = {"include", "src"}
+        if package:config("tools") then
+            table.insert(subdirs, "tools")
+        end
+        io.replace("Makefile.in", "include src tools tests doc", table.concat(subdirs, " "), {plain = true})
+
+        import("package.tools.autoconf").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("seccomp_version", {includes = "seccomp.h"}))
+    end)