my compiler says that this thing __attribute__ is wrong, a syntax error

Question

The following is inside GNU m4 sources in a file called lib/verror.h : ``` /* Declaration for va_list error-reporting function Copyright (C) 2006-2007, 2009-2011 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #ifndef _VERROR_H #define _VERROR_H 1 #include "error.h" #include #ifdef __cplusplus extern "C" { #endif /* Print a message with `vfprintf (stderr, FORMAT, ARGS)'; if ERRNUM is nonzero…

Accepted Answer

`__attribute__` is a GCC extension, which has also been borrowed by clang and maybe other compilers as well. If your compiler doesn't support attributes using this syntax, you can get rid of the errors by defining this macro before any attributes are used:

```
#define __attribute__(x)
```

Keep in mind though that removing attributes may affect the program's behaviour.

my compiler says that this thing attribute is wrong, a syntax error

Solution

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