Build from absolute path on OS/2 to let the IBM debugger automatically find the source files

security/coreconf/rules.mk

@@ -417,7 +417,11 @@ WCCFLAGS3 := $(subst -D,-d,$(WCCFLAGS2))
 $(OBJDIR)/$(PROG_PREFIX)%$(OBJ_SUFFIX): %.c
 	@$(MAKE_OBJDIR)
 ifdef USE_NT_C_SYNTAX
+ifdef XP_OS2_VACPP
+	$(CC) -Fo$@ -c $(CFLAGS) $(subst /,\\,$(shell pwd)\\$<)
+else
 	$(CC) -Fo$@ -c $(CFLAGS) $(subst /,\\,$<)
+endif
 else
 	$(CC) -o $@ -c $(CFLAGS) $<
 endif