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| author |   Sam James <sam@gentoo.org> | 2024-05-04 12:57:12 +0100 |
|---|---|---|
| committer | Sam James <sam@gentoo.org> | 2024-05-04 12:57:12 +0100 |
| commit | 5b76e726a4000e28a2bc7c76e3538027c745de48 (patch) | |
| tree | 5224a612fb5ef1cebacbe2d6921035beb785cee9 | |
| parent | crossdev: tweak comment (diff) | |
| download | crossdev-5b76e726a4000e28a2bc7c76e3538027c745de48.tar.gz crossdev-5b76e726a4000e28a2bc7c76e3538027c745de48.tar.bz2 crossdev-5b76e726a4000e28a2bc7c76e3538027c745de48.zip | |
README: small fixes
Signed-off-by: Sam James <sam@gentoo.org>
| -rw-r--r-- | README | 20 |
1 files changed, 11 insertions, 9 deletions
@@ -15,7 +15,7 @@ It is useful for various purposes: Crossdev nano HOWTO ------------------- -So you want to cross-compile a Gentoo package (say busybox to s390x): +So you want to cross-compile a Gentoo package (say, busybox to s390x): # crossdev -t s390x-unknown-linux-gnu # (optional) ARCH=s390 PORTAGE_CONFIGROOT=/usr/s390x-unknown-linux-gnu eselect profile set default/linux/s390/17.0/s390x @@ -30,7 +30,7 @@ You can use qemu-user to run this binary: $ qemu-s390x -L /usr/s390x-unknown-linux-gnu/ /usr/s390x-unknown-linux-gnu/bin/busybox uname -m s390x -or even chroot to /usr/s390x-unknown-linux-gnu directory! +or even chroot to the /usr/s390x-unknown-linux-gnu directory! https://wiki.gentoo.org/wiki/Crossdev_qemu-static-user-chroot @@ -120,7 +120,7 @@ If toolchains were simple programs crossdev would be a one-liner script: ROOT=... \ emerge "$@" -Unfortunately todays' toolchains have loops in their build-time dependencies: +Unfortunately today's toolchains have cycles/loops in their build-time dependencies: - cross-compiler itself normally needs a libc built for <target> because libc defines various aspects of userland ABI and features provided. @@ -153,11 +153,13 @@ Done! How crossdev works (more details) --------------------------------- -This section contains more details on what actually happens. +This section contains more details on what actually happens (what crossdev +does for you). + Here we elaborate on each step outlined in previous section: 1. create an overlay with new ebuilds (symlinks to existing ebuilds) - <skipping numeruos mkdir and ln commands>. After this step the + <skipping numerous mkdir and ln commands>. After this step the outcomes are: - overlay layout is formed in cross-overlay/: @@ -262,19 +264,19 @@ Various notes (AKA dirty little tricks) Some ./configure scripts rely on runtime feature testing. We would still like to enable things even in cross-environment. - crossdev installs /usr/share/config.site with a bunch of cache + crossdev installs /usr/share/config.site.d/80crossdev.conf with a bunch of cache variables preset for targets. It might be a nice place to drop more things into. Or it could be a source of all your cross-compilation problems if variables set incorrect values. - eclass importing - To find out various things about target crossdev loads multilib.eclass - and tries to find out default ABI supported by the target. + To find out various things about the target, crossdev loads multilib.eclass + and tries to find out the default ABI supported by the target. - crossdev is just a tiny shell script around emerge :) - It's full source code is comparable to the size of this README. + Its full source code is comparable to the size of this README. - USE=headers-only |