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-rw-r--r--ext/racc/cparse/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/racc/cparse/extconf.rb b/ext/racc/cparse/extconf.rb
index 3b4f594b9d..18c5689ad8 100644
--- a/ext/racc/cparse/extconf.rb
+++ b/ext/racc/cparse/extconf.rb
@@ -3,6 +3,7 @@
require 'mkmf'
+have_func('rb_block_call')
have_func('rb_ary_subseq')
create_makefile 'racc/cparse'