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-rw-r--r--ext/io/console/extconf.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/io/console/extconf.rb b/ext/io/console/extconf.rb
index 454a3a7..be536df 100644
--- a/ext/io/console/extconf.rb
+++ b/ext/io/console/extconf.rb
@@ -18,6 +18,7 @@ end
if ok
have_header("sys/ioctl.h") if hdr
have_func("rb_funcallv")
+ have_func("rb_sym2str")
# rb_check_hash_type: 1.9.3
# rb_io_get_write_io: 1.9.1
# rb_cloexec_open: 2.0.0