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-rw-r--r--mrbgems/mruby-range-ext/src/range.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/mrbgems/mruby-range-ext/src/range.c b/mrbgems/mruby-range-ext/src/range.c
index 1f6690904..fb76fe0d8 100644
--- a/mrbgems/mruby-range-ext/src/range.c
+++ b/mrbgems/mruby-range-ext/src/range.c
@@ -1,3 +1,7 @@
+#ifdef MRB_WITHOUT_FLOAT
+# error Conflict 'MRB_WITHOUT_FLOAT' configuration in your 'build_config.rb'
+#endif
+
#include <mruby.h>
#include <mruby/range.h>
#include <math.h>