From Gentoo Wiki
Jump to:navigation Jump to:search
Gentoo user since 2003
Contact info
immolo (IRC)

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.

My plans are to get a 486 laptop, Itanium and SPARC system to add to my collection of hardware so I can test for issues in Gentoo and try to offer solutions, however until then I have PowerPC and MIPS to keep me busy.

If you see an issue in any page then feel free to correct or ask for help in the Discussion page.

Immolo's Guides

GRUB on NewWorld Macs


Building MUSL Stage3 with Catalyst


Old Kernel Install


Stage4 Creation


Rust on non-sse2 machines

User:Immolo/rust i686

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

User:Immolo/Low Memory LiveCD

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.

FILE /etc/portage/make.confFixes for LTO and Gentoo
GRAPHITE="-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.


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


LTO can cause issues with your cross compiler so I recommend adding 'cross-*/* nolto.conf' in your package.env.