Hi Iain,

> maybe this is enough to cover all bases without having to do any version or
> target checks. (untested)
>
> objdump is not available on quite a few Darwin versions with perfectly
> functional
> uleb128 - so I don’t want to punt on those for absence of it.  We already
> check for
> otool elsewhere.
>
> thoughts?

LGTM, with one nit:

> [[
> if test "x$gcc_cv_objdump" != x; then
>  if $gcc_cv_objdump --full-contents conftest.o 2>/dev/null \

I'd use $gcc_cv_objdump -s here (maybe adding -j .data), matching the
other equivalent objdump invocations in gcc/configure.

        Rainer

-- 
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Rainer Orth, Center for Biotechnology, Bielefeld University

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