extconf.rb in rb-libsvm-1.1.2

- old
+ new

@@ -1,7 +1,7 @@
 require 'mkmf'
 
-# $CFLAGS << " -save-temps -ggdb3 "
+$CFLAGS << " -save-temps -ggdb3 " if ENV['DEBUG']
 $LDFLAGS << " -lstdc++ "
 
 HEADER_DIRS = []
 LIB_DIRS = []
 