adonis at aynacorp dot com (2012-12-26 15:01:44)

Installation Steps For on Centos 6.3 / PHP 5.3.3
#use pecl to install it (you will be prompted during installation, I used the default values)
pecl install apc
# you should see something like this
downloading APC-3.1.9.tgz ...
Starting to download APC-3.1.9.tgz (155,540 bytes)
54 source files, building
running: phpize
Configuring for:
PHP Api Version: 20090626
Zend Module Api No: 20090626
...
...
...
Build process completed successfully
Installing '/usr/lib64/php/modules/apc.so'
Installing '/usr/include/php/ext/apc/apc_serializer.h'
install ok: channel://pecl.php.net/APC-3.1.9
#Great now that it is built,
#enable apc in php.ini
nano /etc/php.ini
# somewhere in you php.ini file add please not that path may be different for you installation
extension="/usr/lib64/php/modules/apc.so"
apc.enabled=1
# copy the shipped apc.php to see what is going on wit apc on your server
cp /usr/share/pear/apc.php /root_dir_of_your_web_app
# now you should be able to see stats of APC running

flydian80 at yahoo dot com (2012-05-01 17:45:10)

Install successfully on RHEL5 with user-defined path. In case someone needs it, I put the steps here.
I am not the su user and don't have its right too. Basically I installed the Apache and PHP 5.3.10 on the folder under my user directory.
My user directoy like /home/dxxx, php is at /home/dxxx/php, apache is at /home/dxxx/php.
1: I get APC-3.1.9.tar.gz from PECL and put in at /home/dxxx/php/etc.
2: /home/dxxx/php/etc: tar -xvfz APC-3.1.9.tar.gz
3: We get a folder named APC-3.1.9, then cd APC-3.1.9
4: /home/dxxx/php/etc/APC-3.1.9: /home/dxxx/php/bin/./phpize ( because I installed php on user-defined foler, need to go there to find the "phpize")
It shows:
Configuring for:
PHP Api Version: 20090626
Zend Module Api No: 20090626
Zend Extension Api No: 220090626
5: /home/dxxx/php/etc/APC-3.1.9: ./config --with-php-config=/home/dxxx/php/bin/php-config --enable-apc --enable-apc-debug ( Because I am asked to put --with-php-config=PATH, if I don't provide it)
--Ignore the output message
6: /home/dxxx/php/etc/APC-3.1.9: make
We should be able to see a "apc.so" file under modules/.
7: /home/dxxx/php/etc/APC-3.1.9: make install
This step copies that "apc.so" file to your extension folder. We can do it manually either.
8: Add extension=apc.so to you php.ini, then restart the apache server
9: /home/dxxx/php/etc/APC-3.1.9: /home/dxxx/php/bin/./php -m
We should be able to see the "apc" on the list

Anonymous (2012-01-24 12:16:48)

On my Debian Squeeze 64-bit I also had to install the package "apache2-threaded-dev" with this command "apt-get install apache2-threaded-dev". Afterwards I did "pecl install apc" and everything seemed to work fine.

scarywound at gmail com (2011-11-22 00:45:47)

Pay attention to the fact that installing php-apc package gives you APC version 3.1.3p1, which is according to http://pecl.php.net/package/APC UNSTABLE. If you want the latest STABLE edition (3.1.9 by now), you should use 'sudo pecl install apc' instead.

brian at diamondsea dot com (2011-06-17 19:34:09)

When installing on Plesk and cPanel machines, I get the following error message:
[root@web1 ~]# pecl install apc
downloading APC-3.1.9.tgz ...
Starting to download APC-3.1.9.tgz (155,540 bytes)
.................................done: 155,540 bytes
54 source files, building
running: phpize
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20060613
Zend Extension Api No: 220060519
/usr/bin/phpize: /tmp/pear/temp/APC/build/shtool: /bin/sh: bad interpreter: Permission denied
Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.
ERROR: `phpize' failed
The problem is caused by the /tmp/ filesystem being mounted noexec, which keeps any programs on /tmp/ from being allowed to be executed, which breaks the install script.
To remount /tmp/ as executable, use:
[root@web1 ~]# mount -o remount,exec,suid /tmp
The it should install correctly.
After the install is done, remount the /tmp/ filesystem with the noexec permissions reset.
[root@web1 ~]# mount -o remount,noexec,nosuid /tmp

pr at outwit dot com (2009-08-15 02:11:14)

Installed successfully on different FreeBSD servers, with mmap and IPC semaphores, but I got an error on a 64 bits box :
apc_sem_create: semctl(65536,...) failed: Result too large
I had to increase maximum semaphore value :
# sysctl kern.ipc.semvmx=131068
kern.ipc.semvmx: 32767 -> 131068
# echo "kern.ipc.semvmx=131068" >> /etc/sysctl.conf
Works like a charm.

toby at telegraphics dot com dot au (2009-04-04 10:04:17)

On Gentoo,
# emerge pecl-apc
Check installation:
$ php -r 'phpinfo();' |grep apc
additional .ini files parsed => /etc/php/cli-php5/ext-active/apc.ini,
apc
apc.cache_by_default => On => On
apc.coredump_unmap => Off => Off
apc.enable_cli => Off => Off
apc.enabled => On => On
apc.file_update_protection => 2 => 2
apc.filters => no value => no value
apc.gc_ttl => 3600 => 3600
apc.include_once_override => Off => Off
apc.max_file_size => 1M => 1M
apc.num_files_hint => 1024 => 1024
apc.report_autofilter => Off => Off
apc.rfc1867 => Off => Off
apc.rfc1867_freq => 0 => 0
apc.rfc1867_name => APC_UPLOAD_PROGRESS => APC_UPLOAD_PROGRESS
apc.rfc1867_prefix => upload_ => upload_
apc.shm_segments => 1 => 1
apc.shm_size => 30 => 30
apc.slam_defense => 0 => 0
apc.stat => On => On
apc.stat_ctime => Off => Off
apc.ttl => 7200 => 7200
apc.user_entries_hint => 4096 => 4096
apc.user_ttl => 7200 => 7200
apc.write_lock => On => On
suhosin.apc_bug_workaround => Off => Off

61924 dot 00 at gmail dot com (2008-12-11 10:23:46)

sudo apt-get install php-apc
sudo /etc/init.d/apache2 restart
Was enough for me. I use Ubuntu Server 8.10.

Anonymous (2008-07-25 15:18:00)

On Ubuntu I had to install the apache2-threaded-dev package. It's the the Etch repos.

consistency (2008-07-23 13:07:37)

debian etch installation
apt-get install apache2
apt-get install libapache2-mod-php5
apt-get install php-pear
apt-get install php5-dev
apt-get install make
apt-get install apache2-prefork-dev
pecl install apc
apache2-prefork-dev is necessary for not having the
"Sorry, I was not able to successfully run APXS."
error