unnecassary dependencies of apache2 modules

[jfcgauss]

Binary package hint: apache2

on ubuntu 9.04 having apache2-worker installed, please check out the output of
ldd -r -u /usr/lib/apache2/modules/mod_* 2>&1 | grep -v 'undefined symbol:\|lookup error:\|direct dependencies:\|^$'
there are some unnecassary library dependencies of apache2 modules

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: wl nvidia
Package: apache2 2.2.11-2ubuntu2.3
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: apache2
Uname: Linux 2.6.28-16-generic x86_64

[Chuck Short (zulcss)]

Can you describe what is uneccessary in a bit more detail please?

Regards
chuck

[jfcgauss (jfcgauss)]

For instance
ldd -r -u /usr/lib/apache2/modules/mod_ssl.so 2>&1 | grep -v 'undefined symbol:\|lookup error:\|direct dependencies:\|^$'
gives
 /lib/libuuid.so.1
 /lib/librt.so.1
 /lib/libcrypt.so.1
 /lib/libpthread.so.0
 /lib/libdl.so.2
that is, mod_ssl.so module (which is a shared library) has been linked during "compile-link" time with the above unnecassary (unused) shared libraries. Either these unnecessary libs (possibly in the gcc command line like "-ldl -lpthread -lcrypt -lrt" etc. during compile-link time) should be removed (that is, mod_ssl build should be fixed) or we should add something like -Wl,--as-needed to mod_ssl build. hope that is clear enough. this is not a showstopper, but these unused dependencies cost time and memory when loading these modules.

actually i had mentioned unused dependency problems of tons of shared libraries in ubuntu/debian a while back, dont know what happened then. (hint: man ldd).

[Chuck Short (zulcss)]

Sounds reasonable can you show me examples of bugs you reported?

Thanks
chuck

[jfcgauss (jfcgauss)]

see https://bugs.launchpad.net/ubuntu/+source/libtool/+bug/459095
thx..

[Chuck Short (zulcss)]

This should be fixed in lucid.

Regards
chuck