[U-Boot-Users] hi what is this -MQ option for?

[Detlev Zundel <dzu@denx.de>]

Hi Yusuf,

> i have put patch to port u-boot to mc68360, now when i am trying to
> compile u-boot i am getting this error
> m68k-elf-gcc: cache_8xx.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: cache.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: codec.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: cpu.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: dsp.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: ether.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: i2c.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: memory.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: post.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: rtc.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: spr.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: sysmon.o: No such file or directory
> m68k-elf-gcc: unrecognized option `-MQ'
> m68k-elf-gcc: tests.o: No such file or directory
>
> now i want to know,why is this -MQ option used,it is in
> $(TOPDIR)/rules.mk,i am using cross compilation tool chain gcc version
> 2.95.3,does this compiler is too old,thats why not able to recognise
> the option....please let me know,how can i proceed

This option is used to get gcc not to compile code, but to generate
dependency rules includable from makefiles.  Obviously your compiler is
too old, so you need to update your crosstoolchain.

Apart from this dependency problem I am pretty sure that 2.95.3 would
surely trip in other places as well and is thus very likely a waste of
time.

Best wishes
  Detlev

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