On 2010.05.27 18:09, [email protected] wrote:
What is TARGET_ARCH typically expected to be set to for cross building with the
implicit gmake rules?
The C implicit rule is:
COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
But most hits I see talk about defining TARGET_ARCH to be "arm" or similar. Of course,
doing that makes gcc say "gcc: arm: No such file or directory".
The info pages have nothing to say.
The only reference I saw in the mailing list archives was from 2005, and it
advised just not using implicit rules.
$ info make | grep TARGET_ARCH || echo nothing found
print nothing found. This is not GNU Make issue.
Under "The GNU Project Build Tools" doc you can find:
`target'
The canonical configuration name of the target.
`target_cpu'
`target_vendor'
`target_os'
The first three parts of the canonical target configuration name.
usually this vars joined into triplet:
target=$(target_cpu)-$(target_vendor)-$(target_os)
this like you target_arch.
And these vars used in conditions, not command line switches.
--
С уважением, Александр Гавенко.
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