respect compiler, ldflags and cflags

--- a/build
+++ b/build
@@ -36,7 +36,7 @@
 #define RULES_FILE \"$LIBDIR/en/scrabble_rules\"
 " > src/config.h
   xmkmf -a
-  make
+  make CC="${CC}" CCOPTIONS="${CFLAGS}" LOCAL_LDFLAGS="${LDFLAGS}"
   echo "
 Now, type './build install' to install programs in $BINDIR
 "