[U-Boot-Users] Compilation failure (gcc options..)

[Jonas Mark (ST-FIR/ENG1)]

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Joe,

> I get "arm-elf-gcc: unrecognized option `-MQ'" when generating
> dependencies (in rules.mk). Google is not helping much. Why is this
> option here??

Googling for this gives you for example this very helpful link:
http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Preprocessor-Options.html#Pr
eprocessor-Options

Hint on googling: When looking for keywords that start with a dash put
them in quotes or else Google will only return pages that do *not*
contain these keywords. Additionally, limiting Google to a specific site
helps as well. So your Google search could have been

	gcc "-mq" site:gcc.gnu.org

So most likely your GCC tool chain is broken or too old. I am not an ARM
expert but the ELDK 4.0 from Denx
(http://www.denx.de/en/News/PressReleaseELDK40) is most likely a good
choice.

Regards,
Mark Jonas

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