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Re: error msg: undefined reference to '_impure_ptr'
- From: Ian Lance Taylor <ian at wasabisystems dot com>
- To: n f <yazhi_1 at yahoo dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: 18 Mar 2004 21:06:23 -0500
- Subject: Re: error msg: undefined reference to '_impure_ptr'
- References: <20040319005300.78451.qmail@web40101.mail.yahoo.com>
n f <yazhi_1@yahoo.com> writes:
> When I run my make command, i get this error:
> main.o: undefined reference to '_impure_ptr'
>
> it has to do with a funtion that i send a char *msg to
> and try to print through the serial port.
>
> Does anyone know what's going on?
You need to show precisely what you are doing--what you are compiling
and what commands you are running. Otherwise we are only guessing.
(At least you did include the exact error messages--thanks for doing
that.)
Guessing, I would say that you are using newlib. I would say that
your main function refers to stdout. But at this point my imagination
fails me. Either you got error messages which you haven't told us
about, or something weird is going on, since the newlib libc should
define _impure_ptr.
Ian