ARM setjmp.S multilib issue
Wed May 21 22:33:00 GMT 2008
Anders Lindgren wrote:
> I am using newlib-1.15.0 in a multilib configuration built together
> with gcc-4.1.1 (as in "newlib gets built by the gcc multilib build").
> Everything has been working out fine, but I have recently stumbled
> into a problem with setjmp.S: it gets built in multiple variants by
> the gcc multilib mechanism. However, setjmp.S is for some reason
> *never* assembled into thumb -- the thumb multilib variants all
> contain an ARM version of setjmp.o
> Anyone else able to confirm/deny this in e.g. 1.16?
> Best regards,
There has been a recent fix to setjmp.S with regards to the __thumb2__
flag. I would suggest trying the new file out.
Otherwise, a few things to check. First off, run the compiler with
--print-multi-lib to verify the thumb variant is associated with the
appropriate option. Go to your newlib build directory and traverse to
the thumb/newlib/libc/machine/arm directory and look at the Makefile.
It should have a line in it which sets CC = ..... -mthumb
Finally, verify that the compiler is actually setting the __thumb__ or
__thumb2__ flags for newlib to check.
-- Jeff J.
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