7.2 Configuration Variables

When “configure” is run, some default behaviours are set. These can be overridden with the use of environment variables as described below.

7.2.1 CSSC_BINARY_SUPPORT

The CSSC_BINARY_SUPPORT environment variable controls whether CSSC will create “encoded” SCCS files. The three valid values for this variable are as follows :-

‘enabled’

CSSC will create encoded SCCS files if required

‘disabled’

CSSC will not create encoded SCCS files

unset

The default behaviour is used; this default will be the same as for one of ‘enabled’ or ‘disabled’. The default is set by passing either --enable-binary or --disable-binary to “configure” when CSSC is compiled. If this option was not specified, the default value is ‘enabled’. For more information see Interoperability.

This variable is unset by the sccs driver program, if it is installed set-user-id or set-group-id.

7.2.2 CSSC_MAX_LINE_LENGTH

The CSSC_MAX_LINE_LENGTH environment variable controls the maximum length of lines that CSSC will allow to go into an SCCS file. This variable should be set to a decimal integer.

The default behaviour of CSSC when this variable is unset is described in Interoperability.

This variable is unset by the sccs driver program, if it is installed set-user-id or set-group-id.