gcc - 去掉cpp生成的注释

Question

我用 #include ".../frontend/tokens.mll"在 lexer.mll ，然后 cpp -C -P frontend/lexer.mll -o frontend/lexer_new.mll生成 lexer_new.mll .

这一直有效，直到我昨天将我的 ubuntu 从 12.04 升级到 14.04。

编译报错:

ocamllex frontend/lexer_new.mll
File "frontend/lexer_new.mll", line 1, character 1: illegal character /.
make: *** [frontend/lexer_new.ml] Error 3

那是因为在 lexer_new.mll开头插入了几行C注释:

/* Copyright (C) 1991-2014 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
   ... */

我不记得在升级之前是否生成了相同的评论。

有谁知道如何摆脱这些评论？

PS:gcc 版本是: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)

Answer 1

您可以使用 cpp带旗-nostdinc并且不要使用标志 -C .