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On Friday 10 March 2006 14:51, Mike Williams wrote: |
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> At the moment it's happily running a 32bit kernel, with 32bit userland. |
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> From my experimentation last night, I suspect I will need to boot an amd64 |
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> livecd to compile a proper 64bit kernel, which will enable me to compile a |
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> 64bit toolchain. |
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> Could not compile a 64bit kernel, or a multilib gcc, from the 32bit kernel. |
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You might want to have a look at this recent thread from the gentoo-user |
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mailing list. Boyd helped me to compile a 64 bit kernel from 32 bit kernel |
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and user land using a cross compiler. It was actually quite easy. The 64 bit |
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user land I got from the amd64 stage3 tarball. This was a fresh install but |
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using a 32 bit live cd. |
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http://groups.google.com/group/linux.gentoo.user/browse_thread/thread/e4629ea8751a9ab4/815dbc64722b7d49%23815dbc64722b7d49?sa=X&oi=groupsr&start=1&num=3 |
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I think the important steps for compiling a 64 bit kernel were: |
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To get a working cross compiler: |
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#emerge crossdev |
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#crossdev -s1 -t x86_64 |
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To configure a 64 bit kernel using that cross compiler: |
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#cd /usr/src/linux |
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#make ARCH=x86_64 CROSS_COMPILE=x86_64-pc-linux-gnu- |
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In my case the include/asm symlink pointed towards asm-386 |
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# ls -ld include/asm |
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lrwxrwxrwx 1 root root 10 Feb 24 14:27 include/asm -> asm-386 |
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If it does you can fix it by: |
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# ln -sfn include/asm-x86_64 include/asm |
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Compile 64 bit kernel: |
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#make ARCH=x86_64 CROSS_COMPILE=x86_64-pc-linux-gnu- |
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#make ARCH=x86_64 CROSS_COMPILE=x86_64-pc-linux-gnu- modules_install |
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-- |
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Bo Andresen |
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-- |
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