diff -Naur a/Makefile b/Makefile
--- a/Makefile	2017-01-30 21:48:47.000000000 +0000
+++ b/Makefile	2018-07-21 23:12:11.829945396 +0100
@@ -48,9 +48,8 @@
 ###############################################################################
 
 
-CFLAGS = -Wall -ansi -pedantic -Wno-long-long
+CFLAGS += -Wall -ansi -pedantic -Wno-long-long
 
-LDFLAGS =
 
 # iin_hdloader.c iin_net.c
 SOURCES = hdl_dump.c \
@@ -106,11 +105,11 @@
   DEBUG = no
 endif
 ifeq ($(DEBUG), yes)
-  CFLAGS += -O0 -g -D_DEBUG
-  CXXFLAGS += -O0 -g -D_DEBUG
+  CFLAGS += -D_DEBUG
+  CXXFLAGS += -D_DEBUG
 else
-  CFLAGS += -O2 -s -DNDEBUG
-  CXXFLAGS += -O2 -s -DNDEBUG
+  CFLAGS += -DNDEBUG
+  CXXFLAGS += -DNDEBUG
 endif
 
 ifeq ($(USE_THREADED_IIN), yes)
@@ -183,7 +182,6 @@
 	@echo -e "\tLNK $@"
 	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 ifeq ($(RELEASE), yes)
-	-@upx -q -9 $@ > /dev/null
 endif