* build-aux/prefix-gnulib-mk (prefix_assignment): Don't change the RHS
of 'V_GPERF.* = ' lines. Reported by Assaf Gordon in:
https://lists.gnu.org/archive/html/bug-gnulib/2015-12/msg00015.html
# Some variables are initialized by gnulib.mk, and we don't want
# that. Change '=' to '+='.
- if ($lhs_and_assign_op =~ /^GPERF =$/)
+ if ($lhs_and_assign_op =~ /^(GPERF|V_GPERF.*) =$/)
{
# Do not change the RHS, which specifies the GPERF program.
}