Fwd: [patch, libgomp, build] PR30546 build fail in libgomp when building from SVN because makeinfo is missing

[Paolo Bonzini]

> here's the least intrusive patch I could conjure up, that actually does the 
> job.

The patch is fine with Jakub's fix and with these additional three lines:

   if test $gcc_cv_prog_$2_modern = no; then
     $1="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing $2"
   fi

at the end of the new ACX_CHECK_PROG_VAR macro.

Thanks,

Paolo