fix debug not recompiling

run_tests.sh

@@ -2,7 +2,12 @@
 set -e
 
 # Test cppipe functions
-cppipe test/test.cpp
+OKs=$(cppipe test/functions_test.cppipe | grep OK | wc -l)
+if ! [ $OKs = 12 ]
+then
+    echo "EXPECTED 1 OKs, got $OKs"
+    exit 1
+fi
 
 # Test on a C file
 echo OK | cppipe test/c_file.c