bsd.options.mk provides boilerplate code for standard naming conventions

for handling per-package build options.

Before including this file, the following variables should be defined:

	PKG_OPTIONS_VAR
		This is a list of the name of the make(1) variables that
		contain the options the user wishes to select.  This
		variable should be set in a package Makefile.  E.g.,

			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
		or
			PKG_OPTIONS_VAR=	FOO_OPTIONS BAR_OPTIONS

	PKG_SUPPORTED_OPTIONS
		This is a list of build options supported by the package.
		This variable should be set in a package Makefile.  E.g.,

			PKG_SUPPORTED_OPTIONS=	kerberos ldap ssl

Optionally, the following variables may also be defined:

	PKG_DEFAULT_OPTIONS
		This is a list the options that should be built into
		every package, if that option is supported.  This
		variable should be set in /etc/mk.conf.

	${PKG_OPTIONS_VAR} (the variables named in PKG_OPTIONS_VAR)
		These variables list the selected build options and
		override any default options given in PKG_DEFAULT_OPTIONS.
		If any of the options begin with a '-', then that option
		is always removed from the selected build options, e.g.

			PKG_DEFAULT_OPTIONS=	kerberos ldap sasl
			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
			WIBBLE_OPTIONS=		${PKG_DEFAULT_OPTIONS} -sasl
			# implies PKG_OPTIONS == "kerberos ldap"
		or
			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
			WIBBLE_OPTIONS=		kerberos -ldap ldap
			# implies PKG_OPTIONS == "kerberos"

		This variable should be set in /etc/mk.conf.

	PKG_FAIL_UNSUPPORTED_OPTIONS
		If this is set to "yes", then the presence of unsupported
		options in PKG_OPTIONS.<pkg> (see below) causes the build
		to fail.  Set this to "no" to silently ignore unsupported
		options.  Default: "yes".

After including this file, the following variables are defined:

	PKG_OPTIONS
		This is the list of the selected build options, properly
		filtered to remove unsupported and duplicate options.

Example usage:

-------------8<-------------8<-------------8<-------------8<-------------
# Global and legacy options
.if defined(USE_OPENLDAP) || defined(USE_SASL2)
.  if !defined(PKG_OPTIONS.wibble)
.    if defined(USE_OPENLDAP) && !empty(USE_OPENLDAP:M[yY][eE][sS])
PKG_OPTIONS.wibble+=	ldap
.    endif
.    if defined(USE_SASL2) && !empty(USE_SASL2:M[yY][eE][sS])
PKG_OPTIONS.wibble+=	sasl
.    endif
.  endif
.endif

PKG_OPTIONS_VAR=	PKG_OPTIONS.wibble
PKG_SUPPORTED_OPTIONS=	ldap sasl
.include "../../mk/bsd.options.mk"

# Package-specific option-handling

###
### LDAP support
###
.if !empty(PKG_OPTIONS:Mldap)
.  include "../../databases/openldap/buildlink3.mk"
CONFIGURE_ARGS+=	--enable-ldap=${BUILDLINK_PREFIX.openldap}
.endif

###
### SASL authentication
###
.if !empty(PKG_OPTIONS:Msasl)
.  include "../../security/cyrus-sasl2/buildlink3.mk"
CONFIGURE_ARGS+=	--enable-sasl=${BUILDLINK_PREFIX.sasl}
.endif
-------------8<-------------8<-------------8<-------------8<-------------

1 files changed, 164 insertions, 0 deletions

diff --git a/mk/bsd.options.mk b/mk/bsd.options.mk
new file mode 100644
index 00000000000..3ddc67f6272
--- /dev/null
+++ b/mk/bsd.options.mk
@@ -0,0 +1,164 @@
+# $NetBSD: bsd.options.mk,v 1.1 2004/07/30 20:59:08 jlam Exp $
+#
+# This Makefile fragment provides boilerplate code for standard naming
+# conventions for handling per-package build options.
+#
+# Before including this file, the following variables should be defined:
+#
+#	PKG_OPTIONS_VAR
+#		This is a list of the name of the make(1) variables that
+#		contain the options the user wishes to select.  This
+#		variable should be set in a package Makefile.  E.g.,
+#
+#			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
+#		or
+#			PKG_OPTIONS_VAR=	FOO_OPTIONS BAR_OPTIONS
+#
+#	PKG_SUPPORTED_OPTIONS
+#		This is a list of build options supported by the package.
+#		This variable should be set in a package Makefile.  E.g.,
+#
+#			PKG_SUPPORTED_OPTIONS=	kerberos ldap ssl
+#
+# Optionally, the following variables may also be defined:
+#
+#	PKG_DEFAULT_OPTIONS
+#		This is a list the options that should be built into
+#		every package, if that option is supported.  This
+#		variable should be set in /etc/mk.conf.
+#
+#	${PKG_OPTIONS_VAR} (the variables named in PKG_OPTIONS_VAR)
+#		These variables list the selected build options and
+#		override any default options given in PKG_DEFAULT_OPTIONS.
+#		If any of the options begin with a '-', then that option
+#		is always removed from the selected build options, e.g.
+#
+#			PKG_DEFAULT_OPTIONS=	kerberos ldap sasl
+#			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
+#			WIBBLE_OPTIONS=		${PKG_DEFAULT_OPTIONS} -sasl
+#			# implies PKG_OPTIONS == "kerberos ldap"
+#		or
+#			PKG_OPTIONS_VAR=	WIBBLE_OPTIONS
+#			WIBBLE_OPTIONS=		kerberos -ldap ldap
+#			# implies PKG_OPTIONS == "kerberos"
+#
+#		This variable should be set in /etc/mk.conf.
+#
+#	PKG_FAIL_UNSUPPORTED_OPTIONS
+#		If this is set to "yes", then the presence of unsupported
+#		options in PKG_OPTIONS.<pkg> (see below) causes the build
+#		to fail.  Set this to "no" to silently ignore unsupported
+#		options.  Default: "yes".
+#
+# After including this file, the following variables are defined:
+#
+#	PKG_OPTIONS
+#		This is the list of the selected build options, properly
+#		filtered to remove unsupported and duplicate options.
+#
+# Example usage:
+#
+# -------------8<-------------8<-------------8<-------------8<-------------
+# # Global and legacy options
+# .if defined(USE_OPENLDAP) || defined(USE_SASL2)
+# .  if !defined(PKG_OPTIONS.wibble)
+# .    if defined(USE_OPENLDAP) && !empty(USE_OPENLDAP:M[yY][eE][sS])
+# PKG_OPTIONS.wibble+=	ldap
+# .    endif
+# .    if defined(USE_SASL2) && !empty(USE_SASL2:M[yY][eE][sS])
+# PKG_OPTIONS.wibble+=	sasl
+# .    endif
+# .  endif
+# .endif
+#
+# PKG_OPTIONS_VAR=		PKG_OPTIONS.wibble
+# PKG_SUPPORTED_OPTIONS=	ldap sasl
+# .include "../../mk/bsd.options.mk"
+#
+# # Package-specific option-handling
+#
+# ###
+# ### LDAP support
+# ###
+# .if !empty(PKG_OPTIONS:Mldap)
+# .  include "../../databases/openldap/buildlink3.mk"
+# CONFIGURE_ARGS+=	--enable-ldap=${BUILDLINK_PREFIX.openldap}
+# .endif
+#
+# ###
+# ### SASL authentication
+# ###
+# .if !empty(PKG_OPTIONS:Msasl)
+# .  include "../../security/cyrus-sasl2/buildlink3.mk"
+# CONFIGURE_ARGS+=	--enable-sasl=${BUILDLINK_PREFIX.sasl}
+# .endif
+# -------------8<-------------8<-------------8<-------------8<-------------
+
+.include "../../mk/bsd.prefs.mk"
+
+# Check for variable definitions required before including this file.
+.if !defined(PKG_SUPPORTED_OPTIONS)
+PKG_FAIL_REASON+=	"bsd.options.mk: PKG_SUPPORTED_OPTIONS is not defined."
+.endif
+.if !defined(PKG_OPTIONS_VAR)
+PKG_FAIL_REASON+=	"bsd.options.mk: PKG_OPTIONS_VAR is not defined."
+.endif
+
+# If none of the variables listed in PKG_OPTIONS_VAR is defined, then use
+# the global options provided in ${PKG_DEFAULT_OPTIONS}.
+#
+_PKG_DEFAULT_OPTIONS=	# empty
+.for _opt_ in ${PKG_DEFAULT_OPTIONS}
+.  if !empty(PKG_SUPPORTED_OPTIONS:M${_opt_})
+_PKG_DEFAULT_OPTIONS+=	${_opt_}
+.  endif
+.endfor
+.undef _opt_
+_PKG_OPTIONS_VAR=	# empty
+.for _var_ in ${PKG_OPTIONS_VAR}
+.  if defined(${_var_})
+_PKG_OPTIONS_VAR+=	${_var_}
+.  endif
+.endfor
+.undef _var_
+.if empty(_PKG_OPTIONS_VAR)
+_PKG_OPTIONS_VAR=	_PKG_DEFAULT_OPTIONS
+.endif
+
+# If this is set to "yes", then the presence of unsupported options in
+# the variable named by ${PKG_OPTIONS_VAR} causes the build to fail.  Set
+# this to "no" to silently ignore unsupported options.
+#
+PKG_FAIL_UNSUPPORTED_OPTIONS?=	yes
+
+# Separate out the selected options into "positive" and "negative" lists.
+_PKG_YES_OPTIONS=	# contains the "positive" options
+.for _var_ in ${_PKG_OPTIONS_VAR}
+_PKG_YES_OPTIONS+=	${${_var_}:N-*}
+.endfor
+_PKG_NO_OPTIONS=	# contains the "negative" options
+.for _var_ in ${_PKG_OPTIONS_VAR}
+_PKG_NO_OPTIONS+=	${${_var_}:M-*:S/^-//}
+.endfor
+.undef _var_
+
+# Filter out unsupported and duplicate build options and store the result
+# in PKG_OPTIONS.  We keep all of the "positive" options first, then remove
+# all of the "negative" options last, so "negative" options always have
+# the strongest effect.
+#
+PKG_OPTIONS=		# empty
+.for _opt_ in ${_PKG_YES_OPTIONS}
+.  if empty(_PKG_NO_OPTIONS:M${_opt_}) && empty(PKG_OPTIONS:M${_opt_})
+.    if !empty(PKG_SUPPORTED_OPTIONS:M${_opt_})
+PKG_OPTIONS+=		${_opt_}
+.    elif !empty(PKG_FAIL_UNSUPPORTED_OPTIONS:M[yY][eE][sS])
+PKG_FAIL_REASON+=	"\"${_opt_}\" is not a supported build option."
+.    endif
+.  endif
+.endfor
+
+# Store the result in the +BUILD_INFO file so we can query for the build
+# options using "pkg_info -Q PKG_OPTIONS <pkg>".
+#
+BUILD_DEFS+=		PKG_OPTIONS