+--- mupdf-1.18.0-source/Makerules.orig 2020-10-07 12:35:03.000000000 +0200
++++ mupdf-1.18.0-source/Makerules 2021-07-18 20:55:06.667136139 +0200
+@@ -40,8 +40,8 @@
+ CFLAGS += -pipe -g
+ LDFLAGS += -g
+ else ifeq ($(build),release)
+- CFLAGS += -pipe -O2 -DNDEBUG -fomit-frame-pointer
+- LDFLAGS += $(LDREMOVEUNREACH) -Wl,-s
++ CFLAGS += -DNDEBUG
++ LDFLAGS += $(LDREMOVEUNREACH)
+ else ifeq ($(build),small)
+ CFLAGS += -pipe -Os -DNDEBUG -fomit-frame-pointer
+ LDFLAGS += $(LDREMOVEUNREACH) -Wl,-s