ports/102474: linux_base-fc-4_8 appears broken, does not allow to run Linux binaries

[Alexander Leidinger]

Quoting Boris Samorodov <bsam at ipt.ru> (from Fri, 25 Aug 2006 02:28:36 +0400):

> On Thu, 24 Aug 2006 23:48:08 +0200 Markus Hoenicka wrote:
>> Boris Samorodov writes:
>
>>  > Can you give me a link to ktrace.out for
>>  > "ktrace -i /compat/linux/usr/bin/ldd /compat/linux/sbin/ldconfig"?
>
>> Yes, please have a look at:
>
>> http://refdb.sourceforge.net/stuff/ldd/ktrace.out
>
> Aha, /compat/linux/usr/bin/ldd is a script. Can't say for sure should
> it work or not but something strange does exist:
> -----
>  24546 ktrace   RET   ktrace 0
>  24546 ktrace   CALL  execve(0xbfbfe85e,0xbfbfe75c,0xbfbfe768)
>  24546 ktrace   NAMI  "/compat/linux/usr/bin/ldd"
>  24546 ktrace   NAMI  "/bin/sh"
>  24546 ktrace   NAMI  "/libexec/ld-elf.so.1"
>  24546 sh       RET   execve 0
> -----
>
> Alexander, can you comment on this behaviour? Thanks!

The kernel contains code to detect if a linux program is a script and  
contains "#!" at the beginning. If it detects this, it tries to start  
the linux version of the interpreter. At least it should do that. If  
the above isn't a cut-down version of the ktrace, and if the linux ldd  
does contain "#!" as the first two characters of the file (I can't  
check ATM), then there's something wrong here.

Regarding the lib problem in the PR: FreeBSD 6.x and fc4 contain a  
libc.so.6. So the order of the ld path (/compat/linux/etc/ld.so.conf  
or how it is spelled) may matter. I don't have a 6.x system to test  
this, so someone has to play around with it and report here (don't  
forget to rerun the linux ldconfig with the '-R /compat/linux' option  
after each change). If this doesn't solve the problem, I need to see  
the complete ktrace of a failing program which tries to link with  
libc.so.6.

Bye,
Alexander.

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