gcc 4.3.5 on old Quadra 700 (25 MHz 68040)

[kevin diggs]

Hi,

On Thu, Apr 14, 2011 at 3:00 AM, Kai Ruottu <kai.ruottu@wippies.com> wrote:
>
> You mean "native build" ?  As you can see from the previous
> time stamps, the time between the 3.4.6 and 4.1.2 installs
> was about 15 minutes, so doing it cross could be much, much
> more sane!
>
A native 4.3.5 build on a 650 MHz pentium3 took 5.5 hours for
bootstrap of c and c++. The same build for 3.4.6 took under an hour.

An idle 700 chews up about 61 watts. But it will take a week or so to
complete. That is 10 KWH.

So ...

Can someone point me to some info to learn how to setup cross
compilers? Is it a little easier if I am just building the compiler
itself?

> The current "gcc-4.1.3 20080704 prerelease (NetBSD nb2 20081120)" for
> NetBSD 5.1/mac68k seems to been configured with :
>
> /usr/src/tools/gcc/../../gnu/dist/gcc4/configure --enable-long-long
> --disable-multilib --enable-threads --disable-symvers
> --build=x86_64-unknown-netbsd4.99.72 --host=m68k--netbsdelf
> --target=m68k--netbsdelf --enable-__cxa_atexit
>
> So the cross $build machine was a "x86_64-unknown-netbsd4.99.72"
> system for the "native m68k--netbsdelf"...
>
> So the stupid question is: Why you must do the GCC build natively for
> a system like a 25 MHz m68040 ?  As you can see, one could see the
> answers to the "does it work" questions in some minutes with an
> uptodate quick development platform...
>

Lack of experience doing cross stuff ... Guess I'll take a stab at it ...

Thanks!

kevin