## Installation

--with-adabas[=DIR]

  Include Adabas D support. DIR is the Adabas base install directory, defaults to /usr/local.

--with-sapdb[=DIR]

  Include SAP DB support. DIR is SAP DB base install directory, defaults to /usr/local.

--with-solid[=DIR]

  Include Solid support. DIR is the Solid base install directory, defaults to /usr/local/solid.

--with-ibm-db2[=DIR]

  Include IBM DB2 support. DIR is the DB2 base install directory, defaults to /home/db2inst1/sqllib.

--with-empress[=DIR]

  Include Empress support. DIR is the Empress base install directory, defaults to $EMPRESSPATH. This option only supports Empress Version 8.60 and above.

--with-empress-bcs[=DIR]

  Include `"Empress Local Access"` support. DIR is the Empress base install directory, defaults to $EMPRESSPATH. This option only supports Empress Version 8.60 and above.

--with-birdstep[=DIR]

  Include Birdstep support. DIR is the Birdstep base install directory, defaults to /usr/local/birdstep.

--with-custom-odbc[=DIR]

  Include a user defined ODBC support. The DIR is ODBC install base directory, which defaults to /usr/local. Make sure to define CUSTOM_ODBC_LIBS and have some odbc.h in your include dirs. E.g., you should define following for Sybase SQL Anywhere 5.5.00 on QNX, prior to run configure script:

         CPPFLAGS="-DODBC_QNX -DSQLANY_BUG"
         LDFLAGS=-lunix
         CUSTOM_ODBC_LIBS="-ldblib -lodbc".

--with-iodbc[=DIR]

  Include iODBC support. DIR is the iODBC base install directory, defaults to /usr/local.

--with-esoob[=DIR]

  Include Easysoft OOB support. DIR is the OOB base install directory, defaults to /usr/local/easysoft/oob/client.

--with-unixODBC[=DIR]

  Include unixODBC support. DIR is the unixODBC base install directory, defaults to /usr/local.

--with-openlink[=DIR]

  Include OpenLink ODBC support. DIR is the OpenLink base install directory, defaults to /usr/local. This is the same as iODBC.

--with-dbmaker[=DIR]

  Include DBMaker support. DIR is the DBMaker base install directory, defaults to where the latest version of DBMaker is installed (such as /home/dbmaker/3.6).

The Windows version of PHP has built-in support for this extension. You do not need to load any additional extensions in order to use these functions.

As of PHP 7.0.0, however, Windows users must enable php_odbc.dll in order to use this extension.