Bug 177541

Summary:	Compile genkernel with uclibc (and save 300 kB in initramfs)
Product:	Gentoo Hosted Projects	Reporter:	Dick Marinus <dick>
Component:	genkernel	Assignee:	Gentoo Genkernel Maintainers <genkernel>
Status:	RESOLVED WONTFIX
Severity:	enhancement	CC:	betelgeuse
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	gen_initramfs.sh gen_compile.sh x86uc/busy-config x86uc/config.sh gen_initramfs.sh.patch gen_compile.sh.patch

Description Dick Marinus 2007-05-07 19:26:09 UTC

Hi Folks,

I've created some fixes for genkernel so it can compile module-init-tools and busybox with uclibc. crossdev is required to create a uclibc toolchain.

The main advantage is a smaller initramfs.

Usage:

genkernel --arch-override=x86uc initrd

Comment 1 Dick Marinus 2007-05-07 19:26:44 UTC

Created attachment 118478 [details]
gen_initramfs.sh

Comment 2 Dick Marinus 2007-05-07 19:27:07 UTC

Created attachment 118480 [details]
gen_compile.sh

Comment 3 Dick Marinus 2007-05-07 19:27:40 UTC

Created attachment 118481 [details]
x86uc/busy-config

Comment 4 Dick Marinus 2007-05-07 19:27:56 UTC

Created attachment 118482 [details]
x86uc/config.sh

Comment 5 Petteri Räty (RETIRED) gentoo-dev

2007-05-07 21:31:12 UTC

Please attach patches instead of full files.

Comment 6 Dick Marinus 2007-05-08 15:55:17 UTC

Created attachment 118563 [details, diff]
gen_initramfs.sh.patch

Comment 7 Dick Marinus 2007-05-08 15:56:20 UTC

Created attachment 118565 [details, diff]
gen_compile.sh.patch

Comment 8 Andrew Gaffney (RETIRED) gentoo-dev

2007-08-13 22:39:15 UTC

There are a few problems with this. First, your code is hardcoded for x86/i686. Second, uclibc doesn't currently work on all arches that genkernel works on (for example, ld.so for sparc is b0rked last time I checked). Third, the static insmod stuff is gone from genkernel SVN.

Comment 9 Andrew Gaffney (RETIRED) gentoo-dev

2007-11-17 02:55:52 UTC

The patches as provided are unusable (due to the hard-coding of i686 and part of the code they apply against no longer being in SVN). Your method also requires using a cross-toolchain to compile busybox against uclibc, which is an unacceptable requirement. There is no way any of this can go in.