<div dir="ltr">This is where I'm confused. I guess I was expecting was that all packages created in chapter 5 to be truly targeted to i586. Of course I'm still compiling in 6. Add in that I'm doing this on x86_64 and targeting i586 the host and target are too similar to get a good lesson in cross-compiling a system. It may be helpful if I was to use a host of arm-cross-linux-gnueabihf to target i586. Probably be a two day compile. :)<div><br></div><div>Currently I'm at 10.11 and have chroot'ed into CLFS via the i586 machine by mounting it NFS, setting virtuals, and doing the chroot. I'm going to finish up the chapter there. </div><div><br></div><div>If your curious this is the target:</div><div><br></div><div><div>root:~/ch10# cat /proc/cpuinfo </div><div>processor<span class="" style="white-space:pre"> </span>: 0</div><div>vendor_id<span class="" style="white-space:pre"> </span>: Genuine RDC</div><div>cpu family<span class="" style="white-space:pre"> </span>: 5</div><div>model<span class="" style="white-space:pre"> </span>: 8</div><div>model name<span class="" style="white-space:pre"> </span>: 05/08</div><div>stepping<span class="" style="white-space:pre"> </span>: 6</div><div>cpu MHz<span class="" style="white-space:pre"> </span>: 999.991</div><div>fdiv_bug<span class="" style="white-space:pre"> </span>: no</div><div>hlt_bug<span class="" style="white-space:pre"> </span>: no</div><div>f00f_bug<span class="" style="white-space:pre"> </span>: no</div><div>coma_bug<span class="" style="white-space:pre"> </span>: no</div><div>fpu<span class="" style="white-space:pre"> </span>: yes</div><div>fpu_exception<span class="" style="white-space:pre"> </span>: yes</div><div>cpuid level<span class="" style="white-space:pre"> </span>: 1</div><div>wp<span class="" style="white-space:pre"> </span>: yes</div><div>flags<span class="" style="white-space:pre"> </span>: fpu tsc cx8 mmx up</div><div>bogomips<span class="" style="white-space:pre"> </span>: 1999.98</div><div>clflush size<span class="" style="white-space:pre"> </span>: 32</div><div>cache_alignment<span class="" style="white-space:pre"> </span>: 32</div><div>address sizes<span class="" style="white-space:pre"> </span>: 32 bits physical, 32 bits virtual</div><div>power management:</div><div><br></div></div><div><br></div><div>Linux <a href="http://cs-buford.k4fh.com">cs-buford.k4fh.com</a> 2.6.38 #135 SMP Fri May 13 19:16:23 UTC 2016 i586 GNU/Linux</div><div><br></div><div>Eventually I'd like to do the multi, but for all packages. The same root would target the RDC (i586) and a J1900 BayTrail (i686 32). My kernels will be same version, but different processor config. I could use initrd to then create all proper symlinks in root before executing pivot_root. These systems are small and the root it actually loaded off flash into a ramdisk. The RDC sis discontinued, but I still need to support it.<br><div><br></div><div>Chris</div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 17, 2016 at 4:35 PM, William Harrington <span dir="ltr"><<a href="mailto:kb0iic@berzerkula.org" target="_blank">kb0iic@berzerkula.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Tue, May 17, 2016 19:06, Chris Fowler wrote:<br>
> Yea, I've compiled Linus' code and ran on the RDC3308 itself. I've not<br>
> compiled the code in this environment. I'm not sure if I should see cmov<br>
> instructions in the binary or not. I am using uname hack. If I rebuilt<br>
> gmp and coreutils would cmov be included?<br>
><br>
</span>Hello Chris,<br>
<br>
In gmp configure git master:<br>
<br>
i586 | pentium)<br>
gcc_cflags_cpu="-mtune=pentium -mcpu=pentium -m486"<br>
gcc_cflags_arch="-march=pentium"<br>
path="x86/pentium x86"<br>
<br>
You can do what is done in ch10 during ch6 GMP build:<br>
<br>
mv -v config{fsf,}.guess<br>
mv -v config{fsf,}.sub<br>
<br>
Then it'll use generic targets not optimized with the host CPU.<br>
<br>
I don't know if cmov will be removed. GMP checks the assembler to see if<br>
supports cmov, and is supposed to be enabled in gmp when i686/pentium pro<br>
or newer is in the target triplet. It isn't supposed to be included with<br>
i586/pentium or older.<br>
<div class="HOEnZb"><div class="h5"><br>
Sincerely,<br>
<br>
William Harrington<br>
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