[HEADSUP] configuring options in make.conf

[Tijl Coosemans]

Hi all,

When building a port for the first time a dialog may appear to configure
options for that port.  This configuration is saved such that later
builds no longer show the dialog.  This behaviour has now been extended
to include options set in /etc/make.conf.  It allows you to configure
options like DOCS, NLS, X11, etc. once for all ports and not have option
dialogs pop up if those are the only options.  You can still make the
dialog appear by running "make config".

The following variables can be used in make.conf to configure options.
They are processed in the order listed below, i.e. later variables
override the effects of previous variables.  Options saved using the
options dialog are processed right before OPTIONS_SET_FORCE.

OPTIONS_SET		- List of options to enable for all ports.
OPTIONS_UNSET		- List of options to disable for all ports. 
${UNIQUENAME}_SET	- List of options to enable for a specific port.
${UNIQUENAME}_UNSET	- List of options to disable for a specific port.

OPTIONS_SET_FORCE	- List of options to enable for all ports.
OPTIONS_UNSET_FORCE	- List of options to disable for all ports.
${UNIQUENAME}_SET_FORCE	- List of options to enable for a specific port.
${UNIQUENAME}_UNSET_FORCE
			- List of options to disable for a specific port.

To know the UNIQUENAME of a port you can run "make -V UNIQUENAME" in
a port directory.

An example configuration is given below.

OPTIONS_SET=	NLS	# enable NLS for all ports unless configured
			# otherwise using the option dialog
OPTIONS_UNSET=	DOCS	# aka NOPORTDOCS

# configuration for xorg-server overriding the configuration from the
# option dialog
xorg-server_SET_FORCE=	AIGLX
xorg-server_UNSET_FORCE=HAL SUID

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