Date: Wed, 7 Aug 1996 15:39:08 -0700 (PDT) From: Tom Bartol <bartol@salk.edu> To: hackers@FreeBSD.org Subject: running linux-elf matlab Message-ID: <Pine.NEB.3.93.960807144619.278A-100000@pauling.salk.edu>
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Hi folks, Well I figured its time to get down to some serious work here trying to convert everyone in our lab over from linux to FreeBSD. Our story begins with discovering that linux has horrible paging troubles when running large memory processes in addition to having truly awful NFS performance when being served by anything but linux (we have an Auspex file server which runs a SunOS 4.1.3 variant and has NFS implemented in hardware). We do heavy-duty simulations, mostly in matlab, which run great in linux as long as you hold to small memory and don't hit the file server too much. Unfortunately, most real life tasks never fit within these parameters so I got stuck with the task of trying to figure out how to fix linux. Being ever vigilant for the path of least resistance I quickly discovered that the easy way to fix the problems with linux is to NOT RUN linux but rather run FreeBSD instead. This fixed every problem we had and left me with just one and only one new problem -- I need to be able to run the linux version matlab-4.2c (proprietary software from the MathWorks Inc.) on FreeBSD. Over the past several months I have been trying each new version of FreeBSD and the linux compatibility module that comes out waiting for the day that matlab will run in FreeBSD. I think that day may be near at hand and if I can get some help from some generous soul on this mailing list we may see it happen. Here's we we've got right now: I've just installed FreeBSD-2.2-960801-SNAP and I've installed the linux-lib-2.0 compatibility package. Matlab was built over a year ago by the MathWorks with a very old version of elf and expects there to be certain libs in /lib/elf along with /lib/elf/ld-linux.so.1.0.14 so that /compat/linux is installed as comes with linux-lib-2.0 with the addition of /compat/linux/lib/elf which looks like this: ls -l /compat/linux/lib/elf/ total 961 lrwxr-xr-x 1 root wheel 18 Aug 5 12:38 ld-linux.so.1@ -> ld-linux.so.1.0.14 -rwxr-xr-x 1 bin bin 17400 Dec 13 1994 ld-linux.so.1.0.14* lrwxr-xr-x 1 root wheel 16 Aug 5 12:38 libbfd.so.25@ -> libbfd.so.25.2.6 -rwxr-xr-x 1 bin bin 267833 Dec 14 1994 libbfd.so.25.2.6* lrwxr-xr-x 1 root wheel 9 Aug 5 12:38 libc.so@ -> libc.so.4 lrwxr-xr-x 1 root wheel 14 Aug 5 12:38 libc.so.4@ -> libc.so.4.6.27 -rwxr-xr-x 1 bin bin 474381 Dec 13 1994 libc.so.4.6.27* lrwxr-xr-x 1 root wheel 14 Aug 5 12:38 libcurses.so@ -> libcurses.so.0 lrwxr-xr-x 1 root wheel 18 Aug 5 12:38 libcurses.so.0@ -> libcurses.so.0.1.2 -rwxr-xr-x 1 bin bin 53148 Dec 13 1994 libcurses.so.0.1.2* lrwxr-xr-x 1 root wheel 10 Aug 5 12:38 libdb.so@ -> libdb.so.1 lrwxr-xr-x 1 root wheel 15 Aug 5 12:38 libdb.so.1@ -> libdb.so.1.85.1 -rwxr-xr-x 1 bin bin 68422 Dec 13 1994 libdb.so.1.85.1* lrwxr-xr-x 1 root wheel 10 Aug 5 12:38 libdl.so@ -> libdl.so.1 lrwxr-xr-x 1 root wheel 15 Aug 5 12:38 libdl.so.1@ -> libdl.so.1.0.14 -rwxr-xr-x 1 bin bin 6416 Dec 13 1994 libdl.so.1.0.14* lrwxr-xr-x 1 root wheel 12 Aug 5 12:38 libgdbm.so@ -> libgdbm.so.1 lrwxr-xr-x 1 root wheel 16 Aug 5 12:38 libgdbm.so.1@ -> libgdbm.so.1.7.3 -rwxr-xr-x 1 bin bin 25550 Dec 13 1994 libgdbm.so.1.7.3* lrwxr-xr-x 1 root wheel 9 Aug 5 12:38 libm.so@ -> libm.so.4 lrwxr-xr-x 1 root wheel 14 Aug 5 12:38 libm.so.4@ -> libm.so.4.6.27 -rwxr-xr-x 1 bin bin 37672 Dec 13 1994 libm.so.4.6.27* lrwxr-xr-x 1 root wheel 15 Aug 5 12:38 libtermcap.so@ -> libtermcap.so.1 lrwxr-xr-x 1 root wheel 19 Aug 5 12:38 libtermcap.so.1@ -> libtermcap.so.1.2.3 -rwxr-xr-x 1 bin bin 11380 Dec 13 1994 libtermcap.so.1.2.3* I also added /lib/elf to /compat/linux/etc/ld.so.conf and rehashed ld.so.cache with ldconfig as per the section of the FreeBSD handbook on linux compat. Now, one would hope that matlab would run but here's what results when I try: /usr/local/pkgs/matlab-4.2c/bin/lnx86/matlab ELF interpreter /lib/elf/ld-linux.so.1 not known Abort and /compat/linux/usr/bin/ldd /usr/local/pkgs/matlab-4.2c/bin/lnx86/matlab ELF interpreter /lib/elf/ld-linux.so.1 not known So, it would appear that /lib/elf/ld-linux.so.1 is missing but we can see from the above ls command that it is there so does anyone out there have a clue as to how I should proceed with this problem? Perhaps by "not known" the ELF interpreter is telling me that it can find /lib/elf/ld-linux.so.1 but doesn't know what to do with /lib/elf/ld-linux.so.1 Thanks for any help you can offer, Tom
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