Description:
------------
If OCI8 is installed from PECL, then phpinfo() doesn't show anything for the "Compile-time ORACLE_HOME" or "Libraries Used" field.  

There is no runtime impact on scripts because these are strings constructed at build time,

The incorrect macros values are:
  PHP_OCI8_SHARED_LIB_ADD
  PHP_OCI8_DIR

The macros are defined as empty strings in the pre-existing /usr/include/php/main/build-def.h. Nothing in phpize/configure overrides them.

The PHP_OCI8_VERSION value is correct since it is overridden in php_oci8.h (after Steph's PECL versioning project)

Potential solution is to change config.m4 and add these lines at the
end of the ORACEL_HOME and Instant Client blocks:

  AC_DEFINE_UNQUOTED(PHP_OCI8_DEF_DIR, "$OCI8_DIR", [ ])
  AC_DEFINE_UNQUOTED(PHP_OCI8_DEF_SHARED_LIBADD, "$OCI8_SHARED_LIBADD", [ ])

Then change oci8.c to use the new macros:

#ifdef PHP_OCI8_DEF_DIR
	php_info_print_table_row(2, "Compile-time ORACLE_HOME", PHP_OCI8_DEF_DIR);
#endif
#ifdef PHP_OCI8_DEF_SHARED_LIBADD
	php_info_print_table_row(2, "Libraries Used", PHP_OCI8_DEF_SHARED_LIBADD);
#endif


Reproduce code:
---------------
tar -zxf oci8-1.3.4.tgz
cd oci8-1.3.4
phpize && ./configure --with-oci8=shared,$ORACLE_HOME && make install
[Add extension=oci8.so to php.ini]
php -i |grep ORACLE_HOME

Expected result:
----------------
phpinfo() should show:

Compile-time ORACLE_HOME => /home/oracle/app/oracle

Actual result:
--------------
phpinfo() shows:

Compile-time ORACLE_HOME =>