diff --git a/microemacs/src/linuxgcc.mak b/microemacs/src/linuxgcc.mak
index dadf87ac..15812df0 100644
--- a/microemacs/src/linuxgcc.mak
+++ b/microemacs/src/linuxgcc.mak
@@ -70,7 +70,7 @@ CCDEFS   = -m$(BIT_SIZE) -D_LINUX -D_ARCHITEC=$(ARCHITEC) -D_TOOLKIT=$(TOOLKIT)
 CCFLAGSR = -O3 -flto -DNDEBUG=1 -Wall -Wno-uninitialized -Wno-unused-result
 CCFLAGSD = -g -Wall
 LDDEFS   = -m$(BIT_SIZE)
-LDFLAGSR = -O3 -flto
+LDFLAGSR = -O3 -flto=auto
 LDFLAGSD = -g
 LDLIBS   = -lm -ldl
 
diff --git a/microemacs/src/macoscc.mak b/microemacs/src/macoscc.mak
index ccc81711..c9a42494 100644
--- a/microemacs/src/macoscc.mak
+++ b/microemacs/src/macoscc.mak
@@ -92,7 +92,7 @@ CCDEFS   = -m$(BIT_SIZE) $(ARCFLAGS) -D_MACOS -D_ARCHITEC=$(ARCHITEC) -D_TOOLKIT
 CCFLAGSR = -O3 -flto -DNDEBUG=1 -Wno-uninitialized
 CCFLAGSD = -g
 LDDEFS   = -m$(BIT_SIZE) $(ARCFLAGS)
-LDFLAGSR = -O3 -flto
+LDFLAGSR = -O3 -flto=auto
 LDFLAGSD = -g
 LDLIBS   = 
 ARFLAGSR = rcs