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-rw-r--r--ext/bigdecimal/bigdecimal.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/ext/bigdecimal/bigdecimal.h b/ext/bigdecimal/bigdecimal.h
index 900ebd412a..919583d04f 100644
--- a/ext/bigdecimal/bigdecimal.h
+++ b/ext/bigdecimal/bigdecimal.h
@@ -14,6 +14,10 @@
#include "ruby/ruby.h"
#include <float.h>
+#ifdef RUBY_EXTCONF_H
+# include RUBY_EXTCONF_H
+#endif
+
#if defined(__bool_true_false_are_defined)
# /* Take that. */