Does not work on ARM platform ( undefined symbol: __sync_val_compare_and_swap_4 )

[Kauko.T]

Hi, i`m trying to set up apache wit ruby on rails. After ruby on rails
installation i pasted the following lines to apache config ( /etc/
httpd/conf/httpd.conf ) :

LoadModule passenger_module /root/passenger/ext/apache2/
mod_passenger.so
PassengerRoot /root/passenger
PassengerRuby /usr/bin/ruby

and restarted apache, i get the following error report.

[root@fedora-arm passenger]# /etc/init.d/httpd restart
Stopping httpd: [FAILED]
Starting httpd: httpd: Syntax error on line 204 of /etc/httpd/conf/
httpd.conf: Cannot load /usr/lib/ruby/gems/1.8/gems/passenger-2.2.11/
ext/apache2/mod_passenger.so into server: /usr/lib/ruby/gems/1.8/gems/
passenger-2.2.11/ext/apache2/mod_passenger.so: undefined symbol:
__sync_val_compare_and_swap_4
[FAILED]

My system is Marvell Sheevaplug which is based on ARM architecture.
(Yeah i know, running as root is bad but this is all experimental..)

ruby -e "puts RUBY_PLATFORM" gives me
arm-linux-eabi

Can anyone help me on this?
Thanks!

[Hongli Lai]

What's your GCC version?

--
Phusion | The Computer Science Company

Web: http://www.phusion.nl/
E-mail: in...@phusion.nl
Chamber of commerce no: 08173483 (The Netherlands)

[Kauko.T]

gcc version 4.4.2 20091019 (Red Hat 4.4.2-5) (GCC)

Additional info on gcc..

gcc -v
Using built-in specs.
Target: armv5tel-redhat-linux-gnueabi
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --
infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/
bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --
enable-checking=release --with-system-zlib --enable-__cxa_atexit --
disable-libunwind-exceptions --enable-gnu-unique-object --enable-
languages=c,c++,objc,obj-c++,java,fortran --enable-java-awt=gtk --
disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.5.0-
gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-
mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-
multilib --disable-sjlj-exceptions --build=armv5tel-redhat-linux-
gnueabi
Thread model: posix

Gem passenger is 2.2.11 and apache is 2.2.13.

uname -a gives me

Linux fedora-arm 2.6.33 #2 PREEMPT Tue Mar 2 14:27:17 MST 2010
armv5tel armv5tel armv5tel GNU/Linux

Thanks for the reply.

[Hongli Lai]

Looks like I'll have to disable the use of GCC synchronization
primitives on your platform. Can you tell me the value of your
RUBY_PLATFORM constant?

> --
> You received this message because you are subscribed to the Google Groups "Phusion Passenger Discussions" group.
> To post to this group, send email to phusion-...@googlegroups.com.
> To unsubscribe from this group, send email to phusion-passen...@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/phusion-passenger?hl=en.

[Kauko.T]

ruby -e "puts RUBY_PLATFORM" gives me

armv5tel-linux-eabi

ruby -e "puts RUBY_RELEASE_DATE"
2009-08-04

Hopefully that is the information you need. :)

[Hongli Lai]

Can you check whether this patch works? http://pastie.org/921102

[Kauko.T]

I`m not sure how to apply your patch, should it just work by using the
following command ?

patch passenger.so < name_of_patch_file

Please post instructions how to apply the patch.
Thanks.

[Hongli Lai]

Download the Phusion Passenger source code. In the source tree, apply
the patch with 'patch -p1 < patch_file'. Then install Phusion
Passenger as instructed by the README.

[Kauko.T]

Followed your instructions, got the source code, applied the patch and
then ran the ./passenger-X.X.X/bin/passenger-install-apache2-module
command.

Patch didnt work. :(

I pasted the install results to http://www.pastie.org/921620

[Hongli Lai]

It looks like it didn't pick up the changes properly. Maybe the
compilation cache needs to be cleared. From the Phusion Passenger
source directory, could you run this?

1. rm -rf .cache
2. ruby -Ilib -rphusion_passenger/platform_info -e 'puts
PlatformInfo.portability_cflags'

Can you paste the result of the second command?

--
Phusion | The Computer Science Company

Web: http://www.phusion.nl/
E-mail: in...@phusion.nl
Chamber of commerce no: 08173483 (The Netherlands)

[Kauko.T]

I must have messed something up because i got the following reply line
with 'puts.... portability_flags'
-D_REENTRANT -I/usr/local/include

So i got the source again, applied the patch and this time got
different reply.
ruby -Ilib -rphusion_passenger/platform_info -e 'puts gives me

-D_REENTRANT -I/usr/local/include -DBOOST_SP_USE_PTHREADS

And now it looks like everything works! i got the apache server up and
running and so does phusion passenger.

Now i have to keep searching answers for amahi installation problems.

Thank you very much for your help!