cb84874c5a
The previous patch for the same issue (in
fed7da94ad) works fine for VLC, which
manually overrides "lt_cv_deplibs_check_method=pass_all" in their
configure.ac to get rid of this check in libtool in general.
To fix linking other projects without such existing workarounds
in their configure scripts, we need to patch libtool to allow
statically linking the compiler-rt builtins.
This patch is under discussion upstream at
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27866#65 (but doesn't
seem to be making any progress at the moment).