ext/rumale/tree/extconf.rb in rumale-tree-0.27.0 vs ext/rumale/tree/extconf.rb in rumale-tree-0.28.0

@@ -1,9 +1,11 @@
 # frozen_string_literal: true
 
 require 'mkmf'
 require 'numo/narray'
 
+abort 'libstdc++ is not found.' unless have_library('stdc++')
+
 $LOAD_PATH.each do |lp|
   if File.exist?(File.join(lp, 'numo/numo/narray.h'))
     $INCFLAGS = "-I#{lp}/numo #{$INCFLAGS}"
     break
   end