--- distcc-3.4/Makefile.in.orig	2023-09-20 21:24:52.121396599 +0200
+++ distcc-3.4/Makefile.in	2023-09-20 21:24:54.801382080 +0200
@@ -1083,6 +1083,7 @@ install-include-server: include-server p
 	        --build-temp="$(include_server_builddir)" \
 	      install 					\
 	         --prefix="$(prefix)" 			\
+	         --optimize=2				\
 	         --record="$(include_server_builddir)/install.log.pre" \
 	         --root="$$DESTDIR"                     \
 	    || exit 1; \