[uClinux-dev] Question regarding ucLinux update for ucGardener/simm (fwd)

Per Winkvist nd96pwt at adeptus.student.hig.se
Thu Nov 29 01:57:04 EST 2001


Hi David,

On Thu, 29 Nov 2001, David McCullough wrote:

> 
> Jivin Per Winkvist lays it down ...
> [...]
> > When I did the make menuconfig "uc-libc" was predefined. I believe uclibc
> > a much better alternative since I had "LIBC:PRINTF" problems with the
> > former. When I chose uclibc I got a several compilation errors... Am I
> > missing something ?
> 
> 
> No,  the tree doesn't get a lot of uClibc use on the m68k processors,
> the "LIBC:PRINTF" error you see is because uC-libc doesn't have floating
> point compiled in.  If you want to use floating point,  link in -lm
> something like:
> 
> 	m68k-elf-gcc -m68000 -Wl,-elf2flt -o c c.c -lm -lc
> 

Okay, I don't have to do/specify anything else when building uC-libc to
get floats going ? I read somewhere that I had to pass -DFLOATS too.


> > Can I set the CONSOLE_BAUD_RATE to 115000 in config.arch to get snappier
> > serial terminal ? Why is it 9600 by default ?
> 
> The uCsimm target doesn't honour the CONSOLE_BAUD_RATE option in
> config.arch,  you will need to hack the serial driver or the config/setup
> code for the uCsimm to change this.
> 
> Someone here may know a better way or be able to tell you exactly how to do
> it,
> 

Okay, great man, you've been very helpful.

Per

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