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Bug 276928 - net-p2p/dbhub needs DynaLoader.a file from dev-lang/perl, which is missing in 5.10.1
Summary: net-p2p/dbhub needs DynaLoader.a file from dev-lang/perl, which is missing in...
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: New packages (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Perl team
Depends on:
Blocks: perl-5.10.1 perl-5.12.1
  Show dependency tree
Reported: 2009-07-07 15:07 UTC by Diego Elio Pettenò (RETIRED)
Modified: 2010-10-24 18:40 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

Build log (dbhub-0.451:20090707-135006.log,13.14 KB, text/plain)
2009-07-07 15:08 UTC, Diego Elio Pettenò (RETIRED)
Updated -gentoo.patch to files/ (dbhub-gentoo.patch,769 bytes, patch)
2010-06-29 19:52 UTC, Samuli Suominen (RETIRED)
Details | Diff

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Description Diego Elio Pettenò (RETIRED) gentoo-dev 2009-07-07 15:07:47 UTC
I'm reporting this bug because the package in summary fails to build when forcing --as-needed on through spec files (check out for details).

Please note that this bug _might_ apply to -Wl,--as-needed in LDFLAGS as well; in both cases it should be fixed. Also, if this is due to the package in question not respecting user-defined LDFLAGS, you should get to fix that too.

Check the attached build log.

Comment 1 Diego Elio Pettenò (RETIRED) gentoo-dev 2009-07-07 15:08:12 UTC
Created attachment 197078 [details]
Build log
Comment 2 Markos Chandras (RETIRED) gentoo-dev 2010-06-28 09:46:54 UTC
I cant reproduce it with
Comment 3 Diego Elio Pettenò (RETIRED) gentoo-dev 2010-06-28 09:52:34 UTC
Make sure to have USE=perl.
Comment 4 Kevin Pyle 2010-06-29 02:56:29 UTC
The missing symbols named on lines 129 and later come from libdl, which is linked via -ldl.  Due to the forced --as-needed, -ldl is discarded since it occurs well before the reference to DynaLoader.a.  Moving all the -l switches to the end of the line should fix the problem.

   127	i686-pc-linux-gnu-gcc  -O2 -pipe -D_GNU_SOURCE  -Wl,-O1  -rdynamic -L/usr/local/lib -L/usr/lib/perl5/5.8.8/i686-linux/CORE -lperl -lpthread -lnsl -ldl -lm -lcrypt -lutil -lc -o dbhub  commands.o fileio.o main.o network.o userlist.o utils.o langvars.o logger.o motd.o semops.o  perl_utils.o xs_functions.o lang.o /usr/lib/perl5/5.8.8/i686-linux/auto/DynaLoader/DynaLoader.a -lperl -lcrypt 
   128	/usr/lib/perl5/5.8.8/i686-linux/auto/DynaLoader/DynaLoader.a(DynaLoader.o): In function `XS_DynaLoader_dl_find_symbol':
   129	(.text+0x6f5): undefined reference to `dlsym'
   130	/usr/lib/perl5/5.8.8/i686-linux/auto/DynaLoader/DynaLoader.a(DynaLoader.o): In function `XS_DynaLoader_dl_find_symbol':
   131	(.text+0x781): undefined reference to `dlerror'

As a secondary point, why are there two -lperl and -lcrypt?  Why is there a -lc at all?
Comment 5 Samuli Suominen (RETIRED) gentoo-dev 2010-06-29 19:39:53 UTC
(In reply to comment #3)
> Make sure to have USE=perl.

The perl support needs you to have file called DynaLoader.a, but that file doesn't exist in Gentoo's perl-5.10.1 for some reason... Your log shows it's there still with 5.8.8.

Obviously it's impossible to hit to this bug with that file missing -> and configure disabling perl support
Comment 6 Samuli Suominen (RETIRED) gentoo-dev 2010-06-29 19:52:13 UTC
Created attachment 236967 [details, diff]
Updated -gentoo.patch to files/

Overwrite the current -gentoo.patch in files/ directory with this, and run eautoreconf on the package.

It should solve the issue... that is, if you got the DynaLoader.a file installed. I have no idea howto get that file.
Comment 7 Samuli Suominen (RETIRED) gentoo-dev 2010-06-29 19:54:35 UTC
applied the patch to portage -> this bug is now for the missing file in perl
Comment 8 David Abbott gentoo-dev 2010-06-29 20:15:52 UTC
Packages embedding Perl and not using ExtUtils::Embed::ldopts will look for DynaLoader.a in vain.
Here they just create a dummy DynaLoader.a
Comment 9 Torsten Veller (RETIRED) gentoo-dev 2010-08-15 13:46:51 UTC
If uptream doesn't care, do we?
Comment 10 Samuli Suominen (RETIRED) gentoo-dev 2010-10-24 18:40:06 UTC
meh, it was easy...

+  24 Oct 2010; Samuli Suominen <> dbhub-0.451.ebuild,
+  +files/dbhub-no-dynaloader.patch:
+  Don't check DynaLoader library for compability with recent perl wrt
+  #276928 by Diego E. Pettenò.