[U-Boot] Can't get sprintf to work in standalone program

[Wolfgang Denk]

Dear Martin Hejnfelt,

In message <1247062359.4070.21.camel at hejnfelt-2> you wrote:
> 
> I'm trying to use the sprintf function in a C program written for
> U-boot. As far as I understand, to get the function I have to add it to
> the exports.h, _exports.h and exports.c file as per the
> README.Standalone file in /doc (the function is declared in common.h). 
> Now if I do this, the program compiles fine, and all is dandy, until I
> actually start using the function. It generates garbage. printf and
> alike works fine, and the program runs like it should, except the places
> where sprintf is used, I get garbage (meaning some environment variables
> are looking pretty nasty since the result of the sprintf functions are
> used for these). 
> When compiling I link to the examples/libstubs.a file and
> lib_generic/libgeneric.a where the code I'm using should be present. 

Note that 1) linking libgeneric.a should not be needed and 2) doing so
makes your standalone application to be GPLed.

> When I do this, the line that defines the a[6] thing generates a
> compiler error stating an undefined reference to memcpy. Since this
> error is present every time I try to initialize a string (char*) or char
> array I'm guessing this might be the problem, but I'm not sure...

You probably have to come up with a linker script and a concept
of where your data segment is located...


Best regards,

Wolfgang Denk

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