Makefile question

[ExXec]

Hey,
I have a problem with the "DEBUG" variable in my makefile.
It is set to 1 in the first line of my makefile and when i print it in my target it shows as "1", but the conditional for the compiler flags sees "0".

If I call make DEBUG=1 it works as expected again.

Does anyone know why this happens?
Thanks a lot!
-ExXec

Code: Select all

DEBUG ?= 1 
LINK_TIME_OPT = 1 
...
ifeq ($(DEBUG), 1)
CFLAGS += -ggdb -DDEBUG -g -DPENDSV_DEBUG
COPT += -O0 
else
COPT += -Os -DNDEBUG
# Flags for Link Time Optimization
ifeq ($(LINK_TIME_OPT), 1)
CFLAGS += -flto -fuse-linker-plugin
endif
endif

Example:

Code: Select all

Input: 
	make DEBUG=1
Output:
+---------------------------------------------------
+ DEBUG = 1
+---------------------------------------------------
+ Size = 257224 + 624 kiB
+---------------------------------------------------
+ OPT-Flags: -O0
+---------------------------------------------------

ok bc no optimization happening as intended

Code: Select all

Input: 
	make
Output:
+---------------------------------------------------
+ DEBUG = 1
+---------------------------------------------------
+ Size = 157568 + 624 kiB
+---------------------------------------------------
+ OPT-Flags: -Os -DNDEBUG
+---------------------------------------------------

Bad, optimization even though its turned off

Link to the file: https://github.com/ExXeptional/micropyt ... 3/Makefile

Code for output:

Code: Select all

@echo +---------------------------------------------------
@echo + DEBUG = $(DEBUG)
@echo +---------------------------------------------------
@echo + Size = $(word 7, $(shell $(CROSS_COMPILE)size -Bd $(PROJECT_NAME).axf)) + $(word 8, $(shell $(CROSS_COMPILE)size -Bd $(PROJECT_NAME).axf)) kiB
@echo +---------------------------------------------------
@echo + OPT-Flags: $(COPT)
@echo +---------------------------------------------------

(also if anyone knows how to prperly display the size of the final binary, please do tell)

[jimmo]

It's the same issue as viewtopic.php?f=18&t=6573&p=37412

(You're setting DEBUG to "1 ". Remove the comment at the end of the line)

See how the stm32 prints out the elf size (I'm pretty sure using "size")

[ExXec]

Yes that fixed it, thanks a lot!