+valgrind:
+ @echo make check TESTS_ENVIRONMENT="\"$(VALGRIND_COMMAND)\""
+
+gdb:
+ @echo make check TESTS_ENVIRONMENT="\"$(GDB_COMMAND)\""
+
+helgrind:
+ @echo make check TESTS_ENVIRONMENT="\"$(HELGRIND_COMMAND)\""
+
+drd:
+ @echo make check TESTS_ENVIRONMENT="\"$(DRD_COMMAND)\""
+