--- glibc-2.27/elf/Makefile.0092~	2018-02-01 17:17:18.000000000 +0100
+++ glibc-2.27/elf/Makefile	2018-02-02 20:23:42.959165917 +0100
@@ -74,9 +74,9 @@ define elide-stack-protector
 $(if $(filter $(@F),$(patsubst %,%$(1),$(2))), $(no-stack-protector))
 endef
 
-CFLAGS-.o += $(call elide-stack-protector,.o,$(elide-routines.os))
-CFLAGS-.op += $(call elide-stack-protector,.op,$(elide-routines.os))
-CFLAGS-.os += $(call elide-stack-protector,.os,$(all-rtld-routines))
+CFLAGS-.o += $(call elide-stack-protector,.o,$(elide-routines.os)) -Os
+CFLAGS-.op += $(call elide-stack-protector,.op,$(elide-routines.os)) -Os
+CFLAGS-.os += $(call elide-stack-protector,.os,$(all-rtld-routines)) -Os
 
 ifeq ($(unwind-find-fde),yes)
 routines += unwind-dw2-fde-glibc
@@ -561,11 +561,11 @@ $(objpfx)ldconfig: $(ldconfig-modules:%=
 
 SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
 CFLAGS-ldconfig.c += $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
-		    -D'SLIBDIR="$(slibdir)"'
+		    -D'SLIBDIR="$(slibdir)"' -Os
 libof-ldconfig = ldconfig
-CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
-CFLAGS-cache.c += $(SYSCONF-FLAGS)
-CFLAGS-rtld.c += $(SYSCONF-FLAGS)
+CFLAGS-dl-cache.c += $(SYSCONF-FLAGS) -Os
+CFLAGS-cache.c += $(SYSCONF-FLAGS) -Os
+CFLAGS-rtld.c += $(SYSCONF-FLAGS) -Os
 
 cpp-srcs-left := $(all-rtld-routines:=.os)
 lib := rtld