[U-Boot] [WIP] tools/env: cleanup host build flags

[Wolfgang Denk]

Dear Mike Frysinger,

In message <201011100423.13449.vapier at gentoo.org> you wrote:
>
> > - use the cross compiler again (fw_printenv is intended for a
> >   hosted environment on the target).
> 
> the cross-compiler used to create u-boot has no guarantee that it'll produce 
> executables useful for the target OS.  often this isnt the case.  HOSTCC 

Really? You mean, you need different tool chains to build U-Boot, the
Linux kernel or user space applications?  Frankly, I consider those
tool chains broken. 

> however will produce useful userspace applications for whatever host the user 
> has selection.


This makes no sense to me.  We have CROSS_COMPILE set, and that is
supposed to be used for cross compilation.

IIRC, HOSTCC refers to the C compiler on the and for the build host,
i. e. when running on a x86 system it will create x86 code.  This is
obviously wrong when we try to build fw_printenv for, say, a PPC4xx
system.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"A witty saying proves nothing."                           - Voltaire