Hi, I propose a new way to build LFS, which removes the need for the /tools symlink, and decreases the number of tweaks needed when building gcc.
The current build builds a cross-compiler in pass1, and uses it as a native compiler in pass2. This needs to use a non standard directory (/tools) to host the toolchain and insulate it from the build machine. The modified build uses the cross compiler to cross compile packages that need themselves to be rebuilt, thus insulating them automatically from the host, without the need for a non standard directory layout. Chroot is entered as soon as possible, and the remaining chapter 5 packages are built in chroot. This is WIP: the text must be improved at several places, bison and flex may be moved to after chroot (to be tested). But the commands seem to produce an acceptable system, with almost clean ICA. You can view it at [1], only for sys V since I have not tested systemd yet (I do not expect many changes). There are pros and cons compared to the current method: pros: no /tools symlink, no need to tweak gcc sources, no need to build twice ld in binutils-pass2, no need to readjust the toolchain after chapter 6 glibc, no need to tweak the gcc specs, no need to reinstall kernel headers in chapter 6. cons: chroot is entered in the middle of chapter 5 (maybe chapter 5 should be split), the debug sections of several packages reference x86_64-lfs-linux-gnu instead of x86_64-pc-linux-gnu, binutils-pass2 needs "enable-shared". Another pro, not tried, is that some simple packages built in chapter 5 may be built only once if testing them is not required. Comments and suggestions for improvement (there's a lot of room for improvement) welcome. Regards Pierre [1] http://www.linuxfromscratch.org/~pierre/lfs-modified/index.html -- http://lists.linuxfromscratch.org/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
