--- a/Makefile.old
+++ b/Makefile
@@ -69,7 +69,7 @@ endif
 ifdef CONFIG_CLANG
   HOST_CC=clang
   CC=$(CROSS_PREFIX)clang
-  CFLAGS+=-g -Wall -MMD -MF $(OBJDIR)/$(@F).d
+  CFLAGS+=-Wall -MMD -MF $(OBJDIR)/$(@F).d
   CFLAGS += -Wextra
   CFLAGS += -Wno-sign-compare
   CFLAGS += -Wno-missing-field-initializers
@@ -92,13 +92,13 @@ else ifdef CONFIG_COSMO
   HOST_CC=gcc
   CC=cosmocc
   # cosmocc does not correct support -MF
-  CFLAGS=-g -Wall #-MMD -MF $(OBJDIR)/$(@F).d
+  CFLAGS=-Wall #-MMD -MF $(OBJDIR)/$(@F).d
   CFLAGS += -Wno-array-bounds -Wno-format-truncation
   AR=cosmoar
 else
   HOST_CC=gcc
   CC=$(CROSS_PREFIX)gcc
-  CFLAGS+=-g -Wall -MMD -MF $(OBJDIR)/$(@F).d
+  CFLAGS+=-Wall -MMD -MF $(OBJDIR)/$(@F).d
   CFLAGS += -Wno-array-bounds -Wno-format-truncation
   ifdef CONFIG_LTO
     AR=$(CROSS_PREFIX)gcc-ar
@@ -120,14 +120,14 @@ DEFINES+=-D__USE_MINGW_ANSI_STDIO # for standard snprintf behavior
 endif
 
 CFLAGS+=$(DEFINES)
-CFLAGS_DEBUG=$(CFLAGS) -O0
-CFLAGS_SMALL=$(CFLAGS) -Os
-CFLAGS_OPT=$(CFLAGS) -O2
+CFLAGS_DEBUG=$(CFLAGS)
+CFLAGS_SMALL=$(CFLAGS)
+CFLAGS_OPT=$(CFLAGS)
 CFLAGS_NOLTO:=$(CFLAGS_OPT)
 ifdef CONFIG_COSMO
 LDFLAGS+=-s # better to strip by default
 else
-LDFLAGS+=-g
+LDFLAGS+=
 endif
 ifdef CONFIG_LTO
 CFLAGS_SMALL+=-flto