Check 32 and 64 bits compatibility on 64bits Kernel

First, we need to check if we have a 64Bits Kernel running.

Some Linux distros use a release file to save the version, codename, and other information

alvaro@linux-a77o:~> cat /etc/SuSE-release
openSUSE 11.4 (x86_64)
VERSION = 11.4
CODENAME = Celadon

Or check the system information using uname

alvaro@linux-a77o:~> uname -a
Linux linux-a77o 2.6.37.1-1.2-desktop #1 SMP PREEMPT 2011-02-21 10:34:10 +0100 x86_64 x86_64 x86_64 GNU/Linux

Or something a little more standard...

alvaro@linux-a77o:~> perl -MConfig -e 'print $Config{longsize}*8 . "\n";'
64

With this code, we are going to be testing system libraries and support.

alvaro@linux-a77o:~> cat test-bits.c
#include 

int main()
{
	long z; 
	printf("Long int size is %i bytes long!\n", sizeof(z)); 
	return 0;
}

Without the 32bits support, we can only compile the 64bits binary.
The 32bits compilation will show some fatal errors, like this one:

alvaro@linux-a77o:~> gcc -m64 -o output64 test-bits.c 
alvaro@linux-a77o:~> gcc -m32 -o output32 test-bits.c 
In file included from /usr/include/features.h:371:0,
                 from /usr/include/stdio.h:28,
                 from test-bits.c:1:
/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
compilation terminated.

In this example I used OpenSuse, so these are the steps to solve the problem in this version:

• Software Management ->
• View ->
• Patterns ->
• Search "Base Technologies" and then "32-bit runtime Library" ->
• Activate some or all the checkboxes (you maybe need the CD, DVD or ISO image).

After installing or configuring the 32bits library support, we successfully compile and execute the binaries.

alvaro@linux-a77o:~> source /etc/profile
alvaro@linux-a77o:~> rm output*
alvaro@linux-a77o:~> gcc -m32 -o output32 test-bits.c 
alvaro@linux-a77o:~> gcc -m64 -o output64 test-bits.c 
alvaro@linux-a77o:~> ./output32 
Long int size is 4 bytes long!
alvaro@linux-a77o:~> ./output64 
Long int size is 8 bytes long!

Install IcePHP using Ice-3.4.1

First, you need to install the Ice libs.

zeus ~ # emerge Ice -av
These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] dev-libs/Ice-3.4.1  USE="ncurses python -debug -doc -examples -mono -ruby -test" RUBY_TARGETS="ruby18" 0 kB

Total: 1 package (1 reinstall), Size of downloads: 0 kB

Would you like to merge these packages? [Yes/No] 

And then copy the compressed file to a safe and different place, then go there and expand the file.

zeus ~ # cp /usr/portage/distfiles/Ice-3.4.1.tar.gz /root/
zeus ~ # cd /root/
zeus ~ # tar -xzvf Ice-3.4.1.tar.gz
Ice-3.4.1/
Ice-3.4.1/CHANGES
Ice-3.4.1/ICE_LICENSE
Ice-3.4.1/LICENSE
Ice-3.4.1/Makefile
Ice-3.4.1/Makefile.mak
Ice-3.4.1/README
Ice-3.4.1/RELEASE_NOTES
Ice-3.4.1/allTests.py
Ice-3.4.1/certs/
Ice-3.4.1/certs/ImportKey.class
Ice-3.4.1/certs/ImportKey.java
Ice-3.4.1/certs/c_dsa1024_priv.pem
Ice-3.4.1/certs/c_dsa1024_pub.pem
Ice-3.4.1/certs/c_rsa1024.pfx
Ice-3.4.1/certs/c_rsa1024_priv.pem
Ice-3.4.1/certs/c_rsa1024_pub.pem
Ice-3.4.1/certs/cacert.pem
Ice-3.4.1/certs/cakey.pem
Ice-3.4.1/certs/certs.jks
Ice-3.4.1/certs/client.jks
Ice-3.4.1/certs/dsaparam1024.pem
...

To compile the IcePHP library we need to go to the php directory.

zeus ~ # cd Ice-3.4.1/php/

In order to set the path of php libraries, we need to set it in the Make.rules.php file, but first, we must know where the libraries are.

zeus php ~ # locate php.h
/usr/lib/php5/include/php/main/php.h
/usr/share/doc/freetds-0.64/userguide/php.htm

zeus php ~ # vi config/Make.rules.php
PHP_HOME                ?= /usr/lib/php5

We have all configured, so we just need to compile the library.

zeus php ~ # make
making all in src
make[1]: Entering directory `/root/Ice-3.4.1/php/src'
making all in IcePHP
make[2]: Entering directory `/root/Ice-3.4.1/php/src/IcePHP'
c++ -c -I.  -I/usr/include -I/usr/lib/php5/include/php -I/usr/lib/php5/include/php/main -I/usr/lib/php5/include/php/Zend -I/usr/lib/php5/include/php/TSRM  -Wall -D_REENTRANT -fPIC -g  Communicator.cpp
c++ -c -I.  -I/usr/include -I/usr/lib/php5/include/php -I/usr/lib/php5/include/php/main -I/usr/lib/php5/include/php/Zend -I/usr/lib/php5/include/php/TSRM  -Wall -D_REENTRANT -fPIC -g  Connection.cpp
Connection.cpp: In function 'bool IcePHP::connectionInit()':
Connection.cpp:376: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:378: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:378: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:391: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:391: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:393: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:395: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:395: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:397: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:421: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:421: warning: deprecated conversion from string constant to 'char*'
Connection.cpp:423: warning: deprecated conversion from string constant to 'char*'
c++ -c -I.  -I/usr/include -I/usr/lib/php5/include/php -I/usr/lib/php5/include/php/main -I/usr/lib/php5/include/php/Zend -I/usr/lib/php5/include/php/TSRM  -Wall -D_REENTRANT -fPIC -g  Endpoint.cpp
Endpoint.cpp: In function 'bool IcePHP::endpointInit()':
Endpoint.cpp:288: warning: deprecated conversion from string constant to 'char*'
...

if you got an error message like this.

zeus php ~ # make
making all in src
make[1]: Entering directory `/root/Ice-3.4.1/php/src'
making all in IcePHP
make[2]: Entering directory `/root/Ice-3.4.1/php/src/IcePHP'
make[2]: *** No rule to make target `../../../cpp/include/Ice/CommunicatorF.h', needed by `Communicator.o'.  Stop.
make[2]: Leaving directory `/root/Ice-3.4.1/php/src/IcePHP'
make[1]: *** [all] Error 1
make[1]: Leaving directory `/root/Ice-3.4.1/php/src'
make: *** [all] Error 1

Is just because your ICE_HOME environment variable is missing, you can set this variable in the global profile or just for this build.

zeus php # export ICE_HOME=/usr/ && make

And our Dynamically Linked "Shared Object" library it will be in the lib directory.

zeus php ~ # ll lib/IcePHP.so
-rwxr-xr-x 1 root root 3171151 Nov  1 23:11 lib/IcePHP.so

Now you need to copy this library in some directory and append this directory in the extensions section of the php.ini file.

zeus php ~ # cp lib/IcePHP.so /etc/php/apache2-php5/ext
zeus php ~ # vi /etc/php/apache2-php5/php.ini
extension_dir = /etc/php/apache2-php5/ext
extension = IcePHP.so

Also in the lib directory, we will find all the PHP-ICE library files that our web apps need.

zeus php ~ # ll lib/
total 3152
drwxr-xr-x 2 root root     256 Nov  2 05:11 Glacier2
-rw-r--r-- 1  500  500     425 Jun  3 16:48 Glacier2.php
drwxr-xr-x 2 root root    1152 Nov  2 05:11 Ice
-rw-r--r-- 1  500  500    4279 Jun  3 16:48 Ice.php
drwxr-xr-x 2 root root      80 Nov  2 05:11 IceBox
-rw-r--r-- 1  500  500     379 Jun  3 16:48 IceBox.php
drwxr-xr-x 2 root root     376 Nov  2 05:11 IceGrid
-rw-r--r-- 1  500  500     612 Jun  3 16:48 IceGrid.php
-rwxr-xr-x 1 root root 3171151 Nov  2 05:11 IcePHP.so
drwxr-xr-x 2 root root     112 Nov  2 05:11 IcePatch2
-rw-r--r-- 1  500  500     386 Jun  3 16:48 IcePatch2.php
drwxr-xr-x 2 root root      80 Nov  2 05:11 IceStorm
-rw-r--r-- 1  500  500     383 Jun  3 16:48 IceStorm.php
-rw-r--r-- 1  500  500    5293 Jun  3 16:48 Ice_ns.php
-rw-r--r-- 1  500  500    5344 Jun  3 16:48 Makefile
-rw-r--r-- 1  500  500    3488 Jun  3 16:48 Makefile.make

Now we need to copy these libraries in the PHP shared folder and append the new path of Ice libraries

zeus php ~ # cp -rfv lib/ /usr/share/php/Ice-3.4.1
`Ice-3.4.1/php/lib/' -> `/usr/share/php/Ice-3.4.1'
`Ice-3.4.1/php/lib/Ice' -> `/usr/share/php/Ice-3.4.1/Ice'
`Ice-3.4.1/php/lib/Ice/Current.php' -> `/usr/share/php/Ice-3.4.1/Ice/Current.php'
`Ice-3.4.1/php/lib/Ice/FacetMap.php' -> `/usr/share/php/Ice-3.4.1/Ice/FacetMap.php'
`Ice-3.4.1/php/lib/Ice/LoggerF.php' -> `/usr/share/php/Ice-3.4.1/Ice/LoggerF.php'
`Ice-3.4.1/php/lib/Ice/ConnectionF.php' -> `/usr/share/php/Ice-3.4.1/Ice/ConnectionF.php'
`Ice-3.4.1/php/lib/Ice/ObjectFactory.php' -> `/usr/share/php/Ice-3.4.1/Ice/ObjectFactory.php'
`Ice-3.4.1/php/lib/Ice/RouterF.php' -> `/usr/share/php/Ice-3.4.1/Ice/RouterF.php'
`Ice-3.4.1/php/lib/Ice/PropertiesF.php' -> `/usr/share/php/Ice-3.4.1/Ice/PropertiesF.php'
`Ice-3.4.1/php/lib/Ice/Plugin.php' -> `/usr/share/php/Ice-3.4.1/Ice/Plugin.php'
`Ice-3.4.1/php/lib/Ice/Endpoint.php' -> `/usr/share/php/Ice-3.4.1/Ice/Endpoint.php'
`Ice-3.4.1/php/lib/Ice/Router.php' -> `/usr/share/php/Ice-3.4.1/Ice/Router.php'
`Ice-3.4.1/php/lib/Ice/LocalException.php' -> `/usr/share/php/Ice-3.4.1/Ice/LocalException.php'
`Ice-3.4.1/php/lib/Ice/Stats.php' -> `/usr/share/php/Ice-3.4.1/Ice/Stats.php'
`Ice-3.4.1/php/lib/Ice/Locator.php' -> `/usr/share/php/Ice-3.4.1/Ice/Locator.php'
`Ice-3.4.1/php/lib/Ice/Logger.php' -> `/usr/share/php/Ice-3.4.1/Ice/Logger.php'
...

zeus php ~ # vi /etc/php/apache2-php5/php.ini
include_path = ".:/usr/share/php5:/usr/share/php:/usr/share/php/Ice-3.4.1"

Finally, do not forget to restart the apache web server.

zeus php ~ # /etc/init.d/apache2 restart
 * Stopping apache2 ...                                                                                   [ ok ]
 * Starting apache2 ...                                                                                     [ ok ]

If you got an error like this:

PHP Deprecated:  Comments starting with '#' are deprecated in /etc/php/apache2-php5.4/php.ini on line 693 in Unknown on line 0
PHP Warning:  PHP Startup: ice: Unable to initialize module\nModule compiled with module API=20090626\nPHP    compiled with module API=20100525\nThese options need to match\n in Unknown on line 0

You should read the Gentoo Upgrading PHP guide.

Setup MX records with tinydns or djbdns and gmail

 Just modify the data file to look like this one.

evo ~ # vi /bla/bla/bla/tinydns-IPX/root/data
...
...
...
# myowndomain.com's MX Servers
@myowndomain.com::aspmx.l.google.com.:10:86400
@myowndomain.com::alt1.aspmx.l.google.com.:20:86400
@myowndomain.com::alt2.aspmx.l.google.com.:20:86400
@myowndomain.com::aspmx2.googlemail.com.:30:86400
@myowndomain.com::aspmx3.googlemail.com.:30:86400
@myowndomain.com::aspmx4.googlemail.com.:30:86400
@myowndomain.com::aspmx5.googlemail.com.:30:86400
...
...
...