Sybase IQ 12.7 installs version 15.0 of the Open Client Software Developer’s Kit (SDK) on all platforms except Linux 32, on which it installs version 12.5.1.
The SYBASE_OCS environment variable controls the version of the SDK used by Sybase products. On UNIX platforms, the behavior of setup files has changed regarding this variable.
In Sybase IQ 12.6, running the setup procedure ASIQ-12_6.csh or ASIQ-12_6.sh set the SYBASE_OCS variable. If another installed Sybase product had already set the variable, the value was changed.
In Sybase IQ 12.7, running the setup procedure ASIQ-12_7.csh or ASIQ-12_7.sh sets the variable only if it is not already set. If the value of SYBASE_OCS has been set by another Sybase product, that value remains in effect unless you unset SYBASE_OCS, and then run the source file. See the Sybase IQ Installation and Configuration Guide for details.
On Windows, the installation program sets SYBASE_OCS when it installs the Open Client Software Developer’s Kit.