User:Immolo
This is my little world of guides before being merged into the main wiki pages to help the next person not have to struggle to get the solution they need.
I have a strong interest in keep Gentoo and in turn, Linux working on older hardware so feel free to contact me on IRC if help with testing is required as it will help both of us. I prefer doing the testing myself however SSH access might be possible.
If you see an issue in any page then feel free to correct or ask for help in the Discussion page.
Machines
x86
Toshiba i486DX 75mhz 24mb RAM Compaq Pentium MMX (i586) 64mb RAM Thinkpad Pentium 2 512mb RAM Fujitsu Pentium 3 128mb RAM
PowerPC
PowerMac G5 dual core 2GHz 10gb RAM
MIPS
PS2 - mipsel3 R5900 32mb RAM CI40 - 4 core MIPS32EL 256mb RAM
m68k
PowerMac 190CS
Immolo's Guides
These are completed articles which are ready for community to use and improve on.
GRUB on NewWorld Macs
Building MUSL Stage3 with Catalyst
User:Immolo/CataylstMuslStages
Old Kernel Install
Stage4 Creation
Rust on non-sse2 machines
Catalyst Live Media Creation
Systemwide LTO
ZFS Root Install
Troubleshooting Fixes
User:Immolo/Fix broken compiler
In progress Drafts
These are not complete guides however may help others so they are here for reference only!
Gentoo on the PlayStation 2
Catalyst FAQ Rewrite
Low Memory LiveCD Creation
RPI zero with clang+musl
LTO notes
Below is a collection of issues and my solutions for using LTO and GCC with Gentoo on the main tree. Feel free to add to this.
/etc/portage/make.confFixes for LTO and GentooGRAPHITE="-fgraphite-identity -floop-nest-optimize"
COMMON_FLAGS="-march=native -O2 -pipe ${GRAPHITE} -flto"
USE="pgo lto graphite"
These are the only cflags which get shared around the Internet that I've found don't cause user many paper cuts or have negative effects on performance , Noting that graphite shows little improvement but doesn't seem to cause any negative ones either.
LLVM/CLANG
Letting GCC compile LLVM and CLANG with -flto causes an ICE (Internal Compiler Error) in some builds using that clang binary so, it's recommend to disable compiling with LTO now until this is fixed upstream. See bug #873670
Crossdev
LTO can cause issues with your cross compiler so I recommend adding 'cross-*/* nolto.conf' in your package.env.