Hi Rainer,
> On 16 Aug 2023, at 20:13, Rainer Orth <r...@cebitec.uni-bielefeld.de> wrote:
>
> Since Xcode 15 beta 6, ld -v output differs from previous versions:
>
> * macOS 13/Xcode 14:
>
> @(#)PROGRAM:ld PROJECT:ld64-857.1
>
> * macOS 14/Xcode 15:
>
> @(#)PROGRAM:ld PROJECT:dyld-1015.1
>
> configure cannot handle the new form, so LD64_VERSION isn't set.
>
> This patch fixes this. The autoconf manual states that sed doesn't
> portably support alternation, so I'm using two separate expressions to
> extract the version number.
>
> Tested on x86_64-apple-darwin23.0.0.
>
> Ok for trunk?
OK, thanks
(I do not yet have an xcode-15 or darwin23 setup)
After some bake time, this will need backporting to open branches, to avoid
those also failing in the same way,
> Note however that the new ld isn't yet usable to build gcc: for a
> trivial testcase which amounts to
>
> ld -dynamic -o conftest conftest.o libstdc++.a -lSystem -no_compact_unwind
>
> it dies with an assertion failure. I've filed a bug for this issue:
>
> ld assertion failure in ld::AtomPlacement::findAtom (FB12978804)
>
> Instead there's ld-classic which still works as usual.
I’m assuming ‘ld-classic’ in this context means ‘ld64’?
in which case, ld-classic now has two meanings :) .. (the older ld_classic is
part of cctools)
thanks for the patch,
Iain
>
> Rainer
>
> --
> -----------------------------------------------------------------------------
> Rainer Orth, Center for Biotechnology, Bielefeld University
>
>
> 2023-08-16 Rainer Orth <r...@cebitec.uni-bielefeld.de>
>
> gcc:
> * configure.ac (gcc_cv_ld64_version): Allow for dyld in ld -v
> output.
> * configure: Regenerate.
>
> # HG changeset patch
> # Parent 97d64120b89e921db84ade7f8c75d9e18072d768
> build: Allow for Xcode 15 ld -v output
>
> diff --git a/gcc/configure.ac b/gcc/configure.ac
> --- a/gcc/configure.ac
> +++ b/gcc/configure.ac
> @@ -6263,7 +6263,8 @@ if test x"$ld64_flag" = x"yes"; then
> # If the version was not specified, try to find it.
> AC_MSG_CHECKING(linker version)
> if test x"${gcc_cv_ld64_version}" = x; then
> - gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | grep ld64 | sed s/.*ld64-//
> | awk '{print $1}'`
> + gcc_cv_ld64_version=`$gcc_cv_ld -v 2>&1 | $EGREP 'ld64|dyld' \
> + | sed -e 's/.*ld64-//' -e 's/.*dyld-//'| awk '{print $1}'`
> fi
> AC_MSG_RESULT($gcc_cv_ld64_version)
>
