1 files changed, 2 insertions, 5 deletions
diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index ba0d911fc2..e6fff940ee 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -904,11 +904,8 @@ module RbInstall
       RbInstall.no_write(options) {super}
     end
 
-    if RbConfig::CONFIG["LIBRUBY_RELATIVE"] == "yes" || RbConfig::CONFIG["CROSS_COMPILING"] == "yes" || ENV["DESTDIR"]
-      # TODO: always build extensions in bundled gems by build-ext and
-      # install the built binaries.
-      def build_extensions
-      end
+    # Now build-ext builds all extensions including bundled gems.
+    def build_extensions
     end
 
     def generate_bin_script(filename, bindir)