On Fri, Sep 08, 2017 at 02:12:05PM +1100, evanation wrote: > Can I recompile other libraries as needed, but not in the installation > process? >
Please don't top post on LFS lists - it makes it much harder to follow the conversation. More comments below. > 2017-09-08 13:10 GMT+11:00 James B <jamesbond3...@gmail.com>: > > On Fri, 8 Sep 2017 11:50:00 +1100 > > evanation <evanation...@gmail.com> wrote: > > > >> to get a multilib, is it enough in chapter 5 and in chapter 6 to > >> compile glibc-32bit and glibc-64bit? > > > > No. > > > > In addition to glibc, almost all other libraries in both chapters needs to > > be build in 32/64 version. > > You may instead check CLFS: http://clfs.org/view/sysvinit/x86_64/ (this is > > for x86-64 platform, there are similar guides for other platform too). > > > > cheers! > > It's a long time since I built multilib - I compile everything from source, I have no need for 32-bit x86. But my memory says "Maybe you can build other libaries 32-bit - as needed - after booting." It all depends on what you want to do with the system - CLFS will give you a system where you can compile 32-bit as well as 64-bit. If all you want to do is run some 32-bit binary (statically linked so that it doesn't need more than libc) then just building glibc as 32-bit might work. OTOH, it might not - if you want to do it, you can test it and find out. A quick test (trying to compile a mickey-mouse program with gcc -m32) on x86_64 failed because I lack the 32-bit stubs which I think come from glibc. But for at least a couple of years we (LFS) have had to build libstdc++ to get everything working, so I suspect that all the toolchain (binutils, gcc, glibc, and the extra libs added into the pass1 gcc build) will need to be built as both 32-bit and 64-bit. I'm assuming sysvinit - for systemd you probably also need 32-bit versions of whatever libraries that requires, and their dependencies. Summary: I can't personally see the point of multilib (so much extra to build, then for everything in BLFS you need to specify -m32 or -m64, and --libdir when it is not lib), but you will get more reliable results from following the CLFS build - or more learning experiences by trying to simplify it :) ĸen -- Truth, in front of her huge walk-in wardrobe, selected black leather boots with stiletto heels for such a barefaced truth. - Unseen Academicals -- http://lists.linuxfromscratch.org/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
