Compile iconv php extension on IBMi

compileIconvPHPExtension.sh

#0.1 Do a find and replace for /usr/local/phpdave7 and switch it to your base installation path of php for example /usr/local/zendsvr
#0.2 Do a find and replace for /QOpenSys/litmis/ibmichroot/ and switch it to the directory where shr4.o or shr.o is.  Run `find / -name shr4.o` if you need to locate this file.
#0.3 Do a find and replace for /usr/linux and switch it to the directory where your bin/iconv and lib/libiconv are located possibly /opt/freeware

#1.0 find your PHP Version
php -v
>PHP 5.6.7 (cli) (built: Apr 2 2015 15:32:22)

#2 get latest iconv php extension which is included in the php-src 
git clone -b PHP-5.6.7 http://git.php.net/repository/php-src.git

#3 If you dont have libiconv.a, Get libiconv from perzl and then fix it
wget http://www.oss4aix.org/download/RPMS/libiconv/libiconv-1.14-3.aix5.1.ppc.rpm
rpm --ignoreos --ignorearch --nodeps --replacepkgs --oldpackage -hUv libiconv-1.14-3.aix5.1.ppc.rpm

#4 tonys code on fixing libiconv
ar -x /QOpenSys/usr/lib/libiconv.a
# Argh Matie, we be needin' to make a ugly baby to fool the IFS Kraken
cp /opt/freeware/lib/libiconv.a /opt/freeware/lib/libiconv-lady-in-waiting.a
#ar -rv /opt/freeware/lib/libiconv-lady-in-waiting.a shr4.o
ar -rv /opt/freeware/lib/libiconv-lady-in-waiting.a /QOpenSys/litmis/ibmichroot/shr4.o
#ar -rv /opt/freeware/lib/libiconv-lady-in-waiting.a shr.o
ar -rv /opt/freeware/lib/libiconv-lady-in-waiting.a /QOpenSys/litmis/ibmichroot/shr.o
rm /opt/freeware/lib/libiconv.a
cp /opt/freeware/lib/libiconv-lady-in-waiting.a /opt/freeware/lib/libiconv.a

#5 change directory to where php-src was downloaded and go to the iconv extension directory
cd php-src/ext/iconv

#6 make a copy of our current iconv.so extension (so you can revert back if needed)
cp /usr/local/zendsvr/lib/php_extensions/iconv.so /usr/local/zendsvr/lib/php_extensions/iconv.so-orig

#7 setup environment variables for configure and make
export IBM_DB_HOME=/usr
export PHP_HOME=/usr/local/phpdave7
export PASE_TOOLS_HOME=/QOpenSys/usr
export AIX_TOOLS_HOME=/usr/local
export PATH=$PATH:$PHP_HOME/bin:$PASE_TOOLS_HOME/bin:$AIX_TOOLS_HOME/bin
export LIBPATH=$PHP_HOME/lib:$PASE_TOOLS_HOME/lib:$AIX_TOOLS_HOME/lib
export CC=gcc
export CFLAGS="-DPASE -I=.:$PHP_HOME/php/include"
export CCHOST=powerpc-ibm-aix6.1.0.0

#8 check the gcc version
gcc -v
  Target: powerpc-ibm-aix6.1.0.0 ... used in CCHOST above

#9 compile php extension by running (change --with-iconv to the base folder with iconv):
#phpize, configure, gmake, gmake test, and gmake install
phpize && ./configure --build=$CCHOST --host=$CCHOST --target=$CCHOST  --cache-file=../config.cache --with-iconv=/usr/linux && gmake && gmake test && gmake install

#"gmake install"s it to /usr/local/phpdave7/lib/php/extensions/no-debug-non-zts-20160303/iconv.so

#10 -d will force temporary loading the extension (add extension=iconv.so to permenantly always load it)  --ri display the configuration of an extension
php -dextension=iconv.so --ri iconv 

#11 check what php extension modules are loaded
php -m

#12 edit php.ini to tell PHP to load iconv php extension by adding extension=iconv.so
echo "extension=iconv.so" >> /usr/local/lib/php.ini

#::NOTES::
#view compiled extension
ls /usr/local/phpdave7/lib/php/extensions/no-debug-zts-20160303

#if you have two libiconv.a you'll have to fix that or the libpath might cause issues

#common symbolic links
#ln -sf /QOpenSys/opt/freeware/bin /usr/local/bin
#ln -sf /QOpenSys/opt/freeware/lib /usr/local/lib
#Rather not create hard links try and figure alternative
export PATH=/opt/freeware/bin:$PATH

#Had to remove LIBPATH w/ $PASE_TOOLS_HOME because it was using the wrong libiconv
#export LIBPATH=/usr/local/phpdave7/lib:/usr/local/lib 

#php -v                             
#Could not load program php:
#        Dependent module /QOpenSys/usr/lib/libiconv.a(libiconv.so.2) could not be loaded.
#        Member libiconv.so.2 is not found in archive 



##had to create symlink to glink.o which was missing when i started compiling
#ln -s /QOpenSys/usr/lib/glink.o /usr/lib/glink.o

#note depending on how PHP is configured on your system their will be either be a debug build or Zend Thread Safety (ZTS) builds of the extension
#$PREFIX/lib/php/extensions/no-debug-non-zts-API_NO for release builds without ZTS
#$PREFIX/lib/php/extensions/debug-non-zts-API_NO for debug builds without ZTS
#$PREFIX/lib/php/extensions/no-debug-zts-API_NO for release builds with ZTS
#$PREFIX/lib/php/extensions/debug-zts-API_NO for debug builds with ZTS

[usrcis42@SPACES]~% ls -l /usr/linux                                            
total 192                                                                       
drwx------    2 usrcis42 0             57344 Jun  6 22:06 bin                   
drwx------    2 usrcis42 0              8192 Apr 15 12:57 include               
drwx------    2 usrcis42 0             24576 Apr 15 12:58 lib                   
drwx------    2 usrcis42 0              8192 Apr 15 12:58 lib64    

[usrcis42@SPACES]~% ls -l /usr/linux/bin/iconv                                  
lrwxrwxrwx    1 usrcis42 0                62 Apr 15 12:57 /usr/linux/bin/iconv -
> ../../../opt/freeware/bin/iconv                    

[usrcis42@SPACES]~% ls -l /usr/linux/lib/libiconv.a                             
lrwxrwxrwx    1 usrcis42 0                72 Apr 15 12:57 /usr/linux/lib/libicon
v.a -> ../../../opt/freeware/lib/libiconv.a