[U-Boot-Users] about some variables in Makefile

29 Mar 2006


      Hi guys:
I am a beginner of U-Boot, and now I am trying to understand the Makefiles.
There are some variables in the Makefile under the top directory, which are used without being defined and initiated. For example:
    PLATFORM_LIBS: "PLATFORM_LIBS += --no-warn-mismatch -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc",
    and 
    OBJCFLAGS: "$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@".
    I've checked all the *.mk which are included directly or indirectly by this Makefile and have not find any defination or initiation. I also have made sure that they are not environment variables of LINUX.
I'm so wondering. If anyone could give me an explaination, I will appreciate it so much!
Best Wishes
Lucas Jin
　　　　　　　　lucasjin@126.com
　　　　　　　　　　2006-03-29

Lucas Jin

Wolfgang Denk

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