On Tuesday 25 June 2013 02:41:21 Luca Clementi wrote:
> On Mon, Jun 24, 2013 at 8:42 AM, Mike Frysinger <vap...@gentoo.org> wrote:
> > On Monday 24 June 2013 03:18:58 Luca Clementi wrote:
> >> + AC_CHECK_LIB([unwind], [backtrace],[],[
> >> + AC_MSG_FAILURE([Unable to find libunwind])
> >> + ])
> >> + AC_CHECK_LIB([unwind-$arch], [_U${arch}_create_addr_space],[],
> >> [ + AC_MSG_FAILURE([Unable to find
> >> libunwind-$arch]) + ])
> >
> > is the $arch stuff really necessary ? isn't linking to -lunwind
> > sufficient ?
>
> Actually what I do need is the libunwind-ptrace, but the problem is
> that -lunwind-ptrace depends on -lunwind-$arch (basically they put all
> the arch dependent code in there) so if you test libunwind-ptrace you
> need to have the -lunwind-$arch in your linker flags if not the test
> fails.
i think what you want is to use PKG_CHECK_MODULES and look up libunwind-
generic instead. libunwind takes care of linking that to the right arch.
lrwxrwxrwx 1 root root 19 Nov 2 2012 /usr/lib64/libunwind-generic.so ->
libunwind-x86_64.so
-mike
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