[Bug binutils/27967] Build failure on solaris-11 ld: fatal: option --version-script requires option -z gnu-version-script-compat to be specified

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=27967

--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Nick Alcock <nix@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ea9c2009115d7e00732f5ad316c10a171fc66a53

commit ea9c2009115d7e00732f5ad316c10a171fc66a53
Author: Nick Alcock <nick.alcock@oracle.com>
Date:   Mon Sep 27 20:31:21 2021 +0100

    libctf: try several possibilities for linker versioning flags

    Checking for linker versioning by just grepping ld --help output for
    mentions of --version-script is inadequate now that Solaris 11.4
    implements a --version-script with different semantics.  Try linking a
    test program with a small wildcard-using version script with each
    supported set of flags in turn, to make sure that linker versioning is
    not only advertised but actually works.

    The Solaris "GNU-compatible" linker versioning is not quite
    GNU-compatible enough, but we can work around the differences by
    generating a new version script that removes the comments from the
    original (Solaris ld requires #-style comments), and making another
    version script for libctf-nonbfd in particular which doesn't mention any
    of the symbols that appear in libctf.la, to avoid Solaris ld introducing
    corresponding new NOTYPE symbols to match the version script.

    libctf/ChangeLog
    2021-09-27  Nick Alcock  <nick.alcock@oracle.com>

            PR libctf/27967
            * configure.ac (VERSION_FLAGS): Replace with...
            (ac_cv_libctf_version_script): ... this multiple test.
            (VERSION_FLAGS_NOBFD): Substitute this too.
            * Makefile.am (libctf_nobfd_la_LDFLAGS): Use it.  Split out...
            (libctf_ldflags_nover): ... non-versioning flags here.
            (libctf_la_LDFLAGS): Use it.
            * libctf.ver: Give every symbol not in libctf-nobfd a comment on
            the same line noting as much.

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