-const char *WARN = "/***********\n * DO NOT EDIT! THIS FILE WERE AUTOMATICALLY GENERATED FROM %s BY gras_stub_generator\n ***********/\n";
-const char *SIM_FILENAME = "_%s_simulator.c";
-const char *SIM_BINARYNAME = "%s_simulator";
-const char *SIM_FILENAME_LDADD = "%s_simulator_LDADD";
-const char *SIM_FILENAME_SOURCES = "%s_simulator_SOURCES";
-const char *RL_FILENAME = "_%s_%s.c";
-const char *RL_BINARYNAME = "%s_%s";
-const char *RL_FILENAME_LDADD = "%s_%s_LDADD";
-const char *RL_FILENAME_SOURCES = "%s_%s_SOURCES";
-const char *MAKEFILE_FILENAME = "%s.Makefile.am";
+#define WARN "/***********\n * DO NOT EDIT! THIS FILE WERE AUTOMATICALLY GENERATED FROM %s BY gras_stub_generator\n ***********/\n"
+#define SIM_FILENAME "_%s_simulator.c"
+#define SIM_BINARYNAME "%s_simulator"
+#define SIM_FILENAME_LDADD "%s_simulator_LDADD"
+#define SIM_FILENAME_SOURCES "%s_simulator_SOURCES"
+#define RL_FILENAME "_%s_%s.c"
+#define RL_BINARYNAME "%s_%s"
+#define RL_FILENAME_LDADD "%s_%s_LDADD"
+#define RL_FILENAME_SOURCES "%s_%s_SOURCES"
+#define MAKEFILE_FILENAME "%s.Makefile.am"