--- Makefile.orig	2022-01-12 05:24:28 UTC
+++ Makefile
@@ -54,7 +54,7 @@ cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o
 	      1>&2 2>/dev/null; then echo $(1); fi)
 
 override CFLAGS :=							\
-	-O2 -fomit-frame-pointer -std=c99 -I. -Wall -Wundef		\
+	-std=c99 -I. -Wall -Wundef					\
 	$(call cc-option,-Wpedantic)					\
 	$(call cc-option,-Wdeclaration-after-statement)			\
 	$(call cc-option,-Wmissing-prototypes)				\
@@ -331,7 +331,7 @@ install:all $(PKGCONFBASE)
 		$(DESTDIR)$(BINDIR)
 	install -m644 $(STATIC_LIB) $(DESTDIR)$(LIBDIR)
 	if [ -z "$(DISABLE_SHARED)" ]; then				\
-		install -m755 $(SHARED_LIB) $(DESTDIR)$(LIBDIR);	\
+		install -s -m755 $(SHARED_LIB) $(DESTDIR)$(LIBDIR);	\
 	fi
 	sed -e "s|@PREFIX@|$(PREFIX)|"					\
 	    -e "s|@LIBDIR@|$(LIBDIR)|"					\
@@ -340,7 +340,7 @@ install:all $(PKGCONFBASE)
 	    $(PKGCONFBASE) > $(DESTDIR)$(LIBDIR)/pkgconfig/libdeflate.pc
 	chmod 644 $(DESTDIR)$(LIBDIR)/pkgconfig/libdeflate.pc
 	install -m644 libdeflate.h $(DESTDIR)$(INCDIR)
-	install -m755 gzip$(PROG_SUFFIX) \
+	install -s -m755 gzip$(PROG_SUFFIX) \
 		$(DESTDIR)$(BINDIR)/libdeflate-gzip$(PROG_SUFFIX)
 	ln -f $(DESTDIR)$(BINDIR)/libdeflate-gzip$(PROG_SUFFIX)		\
 	      $(DESTDIR)$(BINDIR)/libdeflate-gunzip$(PROG_SUFFIX)
