Re: Architecture Problems on Sun Ultra-5 Installing LFS-5.1.1

[Mike Liford]

Ken Moffat wrote: On Wed, 23 Feb 2005, Mike Liford wrote: In Chapter 6, I installed the Sparc64 Linux-2.4 headers in /usr/include. I tried to compile Glibc and got architecture errors. I tried passing CFLAGS="-mcpu=v9" to the compiler. However, the linking command does not appear to pick up the flag settings. Hi Mike, As I said before, I know nothing about sparc, but are these the right headers ? If you're going to build a 64-bit kernel then that would need different definitions of things from the 32-bit userspace, so _maybe_ you need two sets of headers (one for when you build a 64-bit toolchain, another for the regular 32-bit userspace). I'm sort of thinking you've got to do some bi-arch stuff. Take a look at Ryan's Cross-Lfs scripts (http://www.linuxfromscratch.org/~ryan/scripts/cross-lfs) - use the latest version of hte scripts. Kernel headers are copied to /tools/include/asm (Chapter 5) or /usr/include/asm (Chapter 6). There are no instructions for maintaining two sets of headers. I tried the Sparc64 headers for the sparc64-unknown-linux-gnu host. When that failed, I replaced the headers with the Sparc headers for the sparc-unknown-linux-gnu host. I'm assuming this is correct. Here is the end result of attempting to compile with CFLAGS and CXXFLAGS unset, using the Sparc64 kernel headers, and running configure as shown in Chapter 6 for Glibc. The configure script is choosing the host and build system as "sparc64-unknown-linux-gnu". Looking at gentoo stuff (e.g. glibc-2.3.2-r12.ebuild - google for it, use wherever is nearest to you if it returns more than one) I get the impression that the 32-bit build needs --host=sparcv9-unknown-linux-gnu which ought to pass -mcpu=ultrasparc -Wa -Av9a to gcc. Didn't know sparcv9-unknown-linux-gnu was an option. The GCC manual doesn't show it. I'll try it anyway. Hopefully, finding this ebuild script will drop you into a gentoo portage tree. glibc is in sys-libs/, binutils and gcc are in sys-devel/, and I can see that 64-bit compilers for the kernel (egcs64-sparc, gcc-sparc64) are separated. It looks as if they have some experience with sparc, so I suggest seeing what you can learn from the flags they are using. HTH. Ken I have Gentoo on my home PC. I've "emerged" plenty of ebuilds, but I've never looked at one. Guess I might take a look now. Thanks for the reply, Mike -- Mike Liford, Senior Software Engineer Lockheed Martin Information Technology E-mail: [EMAIL PROTECTED] Tel: (937) 429-0044 ext 113 Fax: (937) 429-1182

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