--- gmic-2.9.1/src/Makefile.orig	2020-06-10 15:43:15.000000000 +0200
+++ gmic-2.9.1/src/Makefile	2020-06-12 09:33:42.374067915 +0200
@@ -194,7 +194,7 @@
 FLTO = -flto
 OPT_CLI_CFLAGS =
 ifdef IS_GCC
-OPT_CLI_CFLAGS = -Ofast -mtune=generic $(FLTO)
+OPT_CLI_CFLAGS = -Ofast $(FLTO)
 OPT_CLI_LIBS = $(FLTO)
 endif
 ifdef icpc