requires_xs

  requires_xs;

The "requires_xs" command explicitly specifies that a C compiler and the perl header files are required in order to build (at make-time) the distribution (specifically XS files).

It does not take any params, and aborts the Makefile.PL execution in a way that an automated installation or testing system will interpret as a "NA" ("not applicable to this platform") result.

This may be changed to an alternative abort result at a later time.

Returns true as a convenience.

requires_external_cc

  requires_external_cc;

The "requires_external_cc" command explicitly specifies that a C compiler is required in order to build (at make-time) the distribution.

It does not take any params, and aborts the Makefile.PL execution in a way that an automated installation or testing system will interpret as a "NA" ("not applicable to this platform") result.

This may be changed to an alternative abort result at a later time.

Returns true as a convenience.

requires_external_bin

  requires_external_bin 'cvs';

The "requires_external_bin" command takes the name of a system command or program, similar to the "can_run" command, except that "requires_external_bin" checks in a way that is a declarative explicit dependency.

The takes a single param of the command/program name, and aborts the "Makefile.PL" execution in a way that an automated installation or testing system will interpret as a "NA" ("not applicable to this platform") result.

Returns true as a convenience.