How to assigned execution path value in $USER_INSTALL_DIR$

[stardev]

Hi,
I want to assign the variable $USER_INSTALL_DIR$ from where I executed the installer binary. Pls help me.
Example:
My installaer binary is located at /a/b/c/d/setup.bin.
I am executing the binany from /a/b/c/d location.
I want at runtime $USER_INSTALL_DIR$ should contain the value /a/b/c/d.
Please let me know.

[RobertDickau]

Something like $INSTALLER_LAUNCH_DIR$, perhaps?