wd at denx.de
Wed Mar 9 10:39:17 CET 2005
In message <422E60FD.50108 at mc.com> you wrote:
> Having lots of fun with U-boot on our custom PPC440GX board. We're also
> pretty far along on developing a loadable "u-boot application" for this
> I've noticed that -nostdinc is used for many of the compiles. When I
It should be used for _all_ compiles of files that get linked into
the U-Boot image. Please point out if we're missing any (of course it
is NOT used for any tools that will run on the host system, like
> attempted to include stdlib.h and atoi() in our application, the
> compiler could not find the file.
That's a good thing as it prevented you to do a stupind thing ;-)
> Further examination of the U-Boot code-base shows little or no use of
> stdlib.h. Is this to keep the overall binary size to a minimum?
It is to make U-Boot self-contained, i. e. independent of any
external libraries etc.
> Any other reason for not adding this library to build? One simple
Yes. You don;t need it.
> alternative is to include our own atoi() source code.
Don't reinvent the wheel. Don't bloat the code by multiple implemen-
tations of the same function. Use simple_strtoul() instead.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
About the use of language: it is impossible to sharpen a pencil with
a blunt ax. It is equally vain to try to do it with ten blunt axes
instead. -- Edsger Dijkstra
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