Re: [microblaze-uclinux] Gcc build bug?

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Scott,

Scott Thibault wrote:
> I get the following error building on windows using the EDK microblaze
> tools, but linking with the libraries from the John's toolchain build:
> /home/sid/builds/EDK_Gm/env/Jobs/MDT/sw/lin/gnu1/newlib_bld/libgloss/mic
> roblaze/floatlib/subdf3.c:70: undefined reference to `outbyte'
> 
> Is this a problem with the gcc libs, or am I somehow getting references
> the the EDK built libraries in my code?  John, does that path look like
> its from your build?

the outbyte() function is provided by one of xilinx custom 
drivers/librarires, not the generic libgcc / newlib.  It is referenced 
when the function "print" is called.  Normally in a MSS file you 
specifiy PARAMETER STDOUT= console_uart, or whatever, that causes the 
driver code to be copied in an compiled, with the uartlite providing the 
outbyte() function.

When building a uClinux application, the "undefined symbol outbyte" 
error is usually caused by a typo in the source code - using "print" 
instead of "printf"

Hope this helps,

John
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