Messages in this thread | | | Date | Fri, 30 Sep 2005 20:09:11 +0400 | From | Alexey Dobriyan <> | Subject | kernel cross-toolchain (Gentoo) |
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On Fri, Sep 30, 2005 at 01:56:45PM +0100, Al Viro wrote: > Easy cross-toolchain for kernel > > Requirements: > * should be built from the same source as native toolchain with > minimal patches > * should produce normal packages > * should be buildable with minimal PITA in reasonable time > * package metadata can (and obviously will) differ, but delta should > be minimal and easy to maintain > > Recipe for FC4 follows; feel free to contribute equivalents for other > platforms.
Gentoo:
1) Watch for it to install gcc 3.4.*. Chances of successful build are much higher than with 3.3. Use --g switch of crossdev (_especially_ with s390). 2) -s1 means "binutils + C compiler and nothing more". 3) re ia64 I was told that "ia64 is known to not cross compile at all due to the unwind code". #101626. 4) re m68k binutils only. Haven't investigated. 5) re mips64 Ditto. 6) re mips Builds OK. Naive allyesconfig with CROSS_COMPILE=mips-... barfs at me violently mentioning some compiler switches.
The following is the list of cross-compilers I successfully use on -git snapshots. Again, watch for the script to install 3.4.4[-r1]. Always use "crossdev -p ..." first.
# emerge crossdev # echo 'PORTDIR_OVERLAY="/usr/local/portage"' >>/etc/make.conf # crossdev -v -s1 -t alpha-unknown-linux-gnu # crossdev -v -s1 -t arm-unknown-linux-gnu # crossdev -v -s1 -t hppa-unknown-linux-gnu # crossdev -v -s1 -t s390-unknown-linux-gnu # crossdev -v -s1 -t powerpc-unknown-linux-gnu # crossdev -v -s1 -t powerpc64-unknown-linux-gnu # crossdev -v -s1 -t sparc-unknown-linux-gnu # crossdev -v -s1 -t sparc64-unknown-linux-gnu # crossdev -v -s1 -t sh-unknown-linux-gnu # crossdev -v -s1 -t sh64-unknown-linux-gnu # crossdev -v -s1 -t x86_64-unknown-linux-gnu
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