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Title: using sprintf "undefined reference to `_sbrk'"
Post by: spomue on February 20, 2015, 04:23:47 PM

I want to use the sprintf-Funktion. But if I use it like

char str[128];
sprintf(str, "%s: Vers: %s, %s %s\r", GSE_SOFTW_NAME, GSE_FW_VERSION, __DATE__, __TIME__);

I get the error msg: undefined reference to `_sbrk'

What is the Problem?? Please can help me anybody?

Thanks

Title: Re: using sprintf "undefined reference to `_sbrk'"
Post by: MBR on March 07, 2015, 07:02:47 AM

Try adding #include <unistd.h>.

Title: Re: using sprintf "undefined reference to `_sbrk'"
Post by: spomue on March 18, 2015, 10:54:08 AM

Doesn't work.
And sscanf also generate this error.

Title: Re: using sprintf "undefined reference to `_sbrk'"
Post by: JohnS on March 18, 2015, 12:28:46 PM

Wrong compiler version, wrong lib, wrong command line or the like.

John

Title: Re: using sprintf "undefined reference to `_sbrk'"
Post by: spomue on March 18, 2015, 01:03:03 PM

OK. But what can I do to use sscanf or sprintf or other functions?

Title: Re: using sprintf "undefined reference to `_sbrk'"
Post by: JohnS on March 18, 2015, 01:44:26 PM

Find what you've done wrong as I posted.

John

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ARM => ST => Topic started by: spomue on February 20, 2015, 04:23:47 PM