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Subject2.5.21: kbuild changes broke filenames with commas
With the latest kbuild version in 2.5.21, we are unable to build the
following files:

linux/drivers/block/smart1,2.h
linux/drivers/scsi/53c7,8xx.c
linux/drivers/scsi/53c7,8xx.h
linux/drivers/scsi/53c7,8xx.scr
linux/arch/arm/mm/proc-arm6,7.S
linux/arch/arm/mm/proc-arm2,3.S

This is because we end up passing gcc the following argument:

-Wp,-MD,.proc-arm6,7.o.d

which gets passed to cpp0 as:

-MD .proc-arm6 7.o.d
^ space, not comma

and therefore cpp0 sees "-MD", ".proc-arm6" and "7.o.d" as separate
arguments.

There seems to be two solutions:

1. renaming all the above files to contain '_' instead of ','.
2. see if kbuild can use the DEPENDENCIES_OUTPUT environment variable

Kai pointed out that we've already got one exception in kbuild to fixup
the filename for KBUILD_BASENAME (, -> _ and that's not a weird smilie!)
so (1) is probably going to be better, and we can get rid of the special
"comma" handling.

Either way, I plan to rename the two ARM files. That leaves the 53c7,8xx
driver and that block header file.

--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html

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