Comments on: Starting httpd2 (prefork) /usr/sbin/httpd2-prefork: symbol lookup error: /usr/sbin/httpd2-prefork: undefined symbol: apr_atomic_xchgptr

By: rael

rael — Fri, 17 Dec 2010 08:57:03 +0000

Hi!

I fix it removing manually the old libraries that I have on /usr/local/lib and apache2 remains using that ones:

Code:
root@posido:/home/rgarcia# cp -up /usr/local/lib/libapr* libapr/
root@posido:/home/rgarcia# rm -i /usr/local/lib/libapr*
rm: remove regular file `/usr/local/lib/libapr-1.a’? y
rm: remove regular file `/usr/local/lib/libapr-1.la’? y
rm: remove symbolic link `/usr/local/lib/libapr-1.so’? y
rm: remove symbolic link `/usr/local/lib/libapr-1.so.0′? y
rm: remove regular file `/usr/local/lib/libapr-1.so.0.2.12′? y
rm: remove regular file `/usr/local/lib/libaprutil-1.a’? y
rm: remove regular file `/usr/local/lib/libaprutil-1.la’? y
rm: remove symbolic link `/usr/local/lib/libaprutil-1.so’? y
rm: remove symbolic link `/usr/local/lib/libaprutil-1.so.0′? y
rm: remove regular file `/usr/local/lib/libaprutil-1.so.0.2.12′? y

then reinstall the last version of libaprutil1 libaprutil1-dev libapr1 libapr1-dev and check that apache2 are using the correct apr libraries with

Code:

root@posido:/home/rgarcia# ldd /usr/sbin/apache2
linux-vdso.so.1 => (0x00007fffe4123000)
libpcre.so.3 => /lib/libpcre.so.3 (0x00007f3a303b2000)
libaprutil-1.so.0 => /usr/lib/libaprutil-1.so.0 (0x00007f3a3018f000)
libapr-1.so.0 => /usr/lib/libapr-1.so.0 (0x00007f3a2ff59000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00007f3a2fd3c000)
libc.so.6 => /lib/libc.so.6 (0x00007f3a2f9b9000)
libuuid.so.1 => /lib/libuuid.so.1 (0x00007f3a2f7b3000)
librt.so.1 => /lib/librt.so.1 (0x00007f3a2f5ab000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x00007f3a2f372000)
libdl.so.2 => /lib/libdl.so.2 (0x00007f3a2f16d000)
libexpat.so.1 => /lib/libexpat.so.1 (0x00007f3a2ef44000)
/lib64/ld-linux-x86-64.so.2 (0x00007f3a3087d000)

and It works!

Code:
root@posido:/home/rgarcia# /etc/init.d/apache2 start
* Starting web server apache2 [ OK ]

I hope it helps.

By: ben

ben — Wed, 21 Apr 2010 01:45:24 +0000

Thanks you!

Although it didn’t work quite as described for me…. but based on info provided I changed to:

zypper in libapr1 libapr-util1 apache2-utils

and this fixed the problem on my SLES 10 sp2 server.

Thanks,
Ben.

By: kruszak

kruszak — Sat, 19 Dec 2009 11:26:34 +0000

hello colls,

I have some trouble, when try to update libapr1.
I has got a message:

Problem: nothing provides libc.so.6(GLIBC_2.9) needed by libapr1-1.3.8-3.1.i586
Solution 1: do not ask to install a solvable providing libapr1 > 1.2.12-27.2

Help me pls

By: Chad say's

Chad say's — Wed, 09 Dec 2009 18:33:55 +0000

kudos for the fix!!

happy camper:-)

By: Untit1ed

Untit1ed — Wed, 08 Jul 2009 05:29:14 +0000

thanks a lot

By: Ray

Ray — Tue, 02 Jun 2009 10:21:15 +0000

Thanks for this tip, I had the same problem upgrading to Apache2_2.2.11. I had to install libapr-util & libapr1 separately, but everything worked. Thanks…

By: CTS

CTS — Fri, 24 Oct 2008 05:09:20 +0000

Worked on OpenSuSE 11 as root:

yast2 –update apache2-utils apache2-prefork libapr-util1 libapr1

By: LAMP Help - openSUSE Forums

LAMP Help - openSUSE Forums — Fri, 22 Aug 2008 16:08:51 +0000

[...] Re: LAMP Help Strange. libapr-1.so.0 contains one or two apr_atomic_xchg* symbols but not apr_atomic_xchgptr. Could you have a foreign apache module installed from somewhere else, from an external package for Ruby perhaps? Do you have any non-OpenSUSE packages or software installed? Or perhaps a hangover from an older version of SUSE? Hah, ok, a search found the solution. You need to update some additional packages after the update to apache2, which I assume is because you got the latest version during the install. Starting httpd2 (prefork) /usr/sbin/httpd2-prefork: symbol lookup error: /usr/sbin/httpd2-prefork: u… [...]

By: Frank

Frank — Thu, 31 Jul 2008 19:06:39 +0000

Someone’s formatter got a little carried away on the command line and turned the — into an em dash. Replace the — with two hyphens and it works.

By: Skilly

Skilly — Sat, 19 Jul 2008 12:41:39 +0000

Thank you very much for this nice article