Bug#774422: [Reproducible-builds] Bug#774422: perl: please make perl builds reproducible

[Daniel Kahn Gillmor]

On Fri 2015-01-23 06:03:25 -0500, Holger Levsen wrote:
> Hi Niko,
>
> On Freitag, 23. Januar 2015, Niko Tyni wrote:
>> A quick search indicates that there's no separate namespace for other
>> uname(2) information than the host name and domain name.  This suggests
>> that something like http://www.bstern.org/libuname/ is needed. I'm not
>> aware of anything in Debian already that does that. Time for an RFP maybe
>> :)
>
> it builds fine but doesn't work:
>
> jenkins at jenkins:~/u/libuname-1.0.0$ make
> gcc -Wall -Werror -O2 -fPIC   -c -o libuname.o libuname.c
> if [ "`uname -s`" = "SunOS" ]; then \
>                 ld -G -dy -z text -Qn -o libuname.so libuname.o; \
>         else \
>                 ld -shared -fPIC -o libuname.so libuname.o; \
>         fi
> jenkins at jenkins:~/u/libuname-1.0.0$ LD_PRELOAD=$PWD/libuname.so 
> LIBUNAME='Linux;bar;2.6.15;#1;Mon Feb 37 22:33:44 UTC 2006;i686;unknown' uname 
> -a
> uname: symbol lookup error: /var/lib/jenkins/u/libuname-1.0.0/libuname.so: 
> undefined symbol: dlsym

This is resolved by the attached patch.

     --dkg

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