PERF: drop Ruby libs from safe-exec build

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased
 
+### [0.2.1] - 2026-06-16
+
+- Build `landlock-safe-exec` without Ruby extension `$(LIBS)` to avoid unnecessary runtime library dependencies and improve SafeExec helper startup time.
+
 ### [0.2] - 2026-04-30
 
 - Add `Landlock::SafeExec.capture`, backed by a compiled `landlock-safe-exec` helper, for subprocess capture with Landlock, optional seccomp network denial, resource limits, exact environment handling, stdin, timeout handling, process-group cleanup, result metadata, and output limits.

ext/landlock/extconf.rb

@@ -25,7 +25,7 @@
       all: #{helper}
 
       #{helper}: #{helper_src}
-      \t$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) #{helper_src} -o #{helper} $(LIBS)
+      \t$(CC) $(INCFLAGS) $(CPPFLAGS) $(CFLAGS) #{helper_src} -o #{helper}
 
       install: install-#{helper}
 

lib/landlock/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Landlock
-  VERSION = "0.2"
+  VERSION = "0.2.1"
 end