ld64: don't warn about /usr/lib/crt1.o on Tiger ppc

[ryandesign (Ryan Carsten Schmidt)]

See comment:ticket:44268:6 for an interesting problem with apple-gcc42 on Tiger PowerPC.

It seems that when doing even quite simple compiles such as those a configure script does, it produces this warning:

ld: warning: object file compiled with -mlong-branch which is no longer needed. To remove this warning, recompile without -mlong-branch: /usr/lib/crt1.o

This warning, printed on stderr, in turn can cause an otherwise successful compilation to be interpreted by the configure script as a failure.

I am assuming that the directive to "recompile without -mlong-branch" is supposed to be taken to mean "recompile /usr/lib/crt1.o without -mlong-branch", and is not talking about the small program the configure script compiled, since that compilation did not include the -mlong-branch flag to begin with.

Is there a way that apple-gcc42 could not print that warning, at least not for system libraries like /usr/lib/crt1.o which it's not our bailiwick to fix?

[jeremyhu (Jeremy Huddleston Sequoia)]

That warning is coming from the linker, not the compiler. Is this with the +bootstrap variant (and thus using /usr/bin/ld) or the normal variant (thus using the ld64 port)?

[ryandesign (Ryan Carsten Schmidt)]

Oh I see.

$ port -v installed apple-gcc42 ld64
The following ports are currently installed:
  apple-gcc42 @5666.3_14 (active) platform='darwin 8' archs='ppc'
  ld64 @97.17_2 (active) platform='darwin 8' archs='ppc'

[jeremyhu (Jeremy Huddleston Sequoia)]

PR-44607.patch

[jeremyhu (Jeremy Huddleston Sequoia)]

Can you give that patch a try?

[ryandesign (Ryan Carsten Schmidt)]

Works great, thanks!

[jeremyhu (Jeremy Huddleston Sequoia)]

r123756