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From: "unlvsur at live dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/100427] canadian compile for mingw-w64 copies the
 wrong dlls for mingw-w64 multilibs
Date: Mon, 18 Oct 2021 04:47:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100427

--- Comment #7 from cqwrteur <unlvsur at live dot com> ---
This is incorrect when we canadian build multilib. unfortunately.

I find this is an issue for not just libstdc++, but libaotmic, libssp etc t=
oo.
This script is clearly just not right. It should only copy DLLs from lib not
from lib32. and copy DLLs of 32bit to /lib32

  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
    library_names_spec=3D'$libname.dll.a'
    # DLL is installed to $(libdir)/../bin by postinstall_cmds
    postinstall_cmds=3D'base_file=3D`basename \${file}`~
      dlpath=3D`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo
\$dlname'\''`~
      dldir=3D$destdir/`dirname \$dlpath`~
      test -d \$dldir || mkdir -p \$dldir~
      $install_prog $dir/$dlname \$dldir/$dlname~
      chmod a+x \$dldir/$dlname~
      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
      fi'
    postuninstall_cmds=3D'dldll=3D`$SHELL 2>&1 -c '\''. $file; echo \$dlnam=
e'\''`~
      dlpath=3D$dir/\$dldll~
       $RM \$dlpath'
    shlibpath_overrides_runpath=3Dyes=