ports cross-compilers vs. native toolchain

[Warner Losh]

On Mar 3, 2012, at 12:03 PM, Tim Kientzle wrote:

> On Mar 3, 2012, at 12:17 AM, Stanislav Sedov wrote:
> 
>> On Jan 18, 2012, at 9:49 PM, Tim Kientzle <tim at kientzle.com> wrote:
>> 
>>> I'm trying to build a customized u-boot (so that I can
>>> add the bootelf command, which is needed to chain
>>> Rafał's ubldr version of loader(8)). 
>> 
>> You can use arm-rtems-gcc or build one with arm/eabi settings to build
>> uboot.  Personally, I've been using the rtems gcc port.  The uboot is
>> a freestanding application, so it does not need FreeBSD libs tool chain to
>> build and work.
> 
> Actually, I've since managed to build u-boot with the xdev
> toolchain.  There were two issues:
> 
> 1) "gcc --print-file-name=include" 
> 
> About a week ago, I committed a fix to FreeBSD-CURRENT
> so it now supports this.
> 
> 2) Missing div/mod functions in ARM libgcc.
> 
> You can work around this by adding -lc to a couple
> of places in the u-boot makefiles.  I'm also looking into
> a fix for FreeBSD libgcc.  (Looks like these functions
> were disabled deliberately?  I'm still digging.)

Perhaps.  The arm stuff has been fairly minimal for a number of reasons that likely no longer make sense...

Warner