Convert code in bsd.port.mk for USE_GHOSTSCRIPT* to USES=ghostscript.

Add GHOSTSCRIPT_DEFAULT to bsd.default-versions.mk for easy version selection.
Arguments supported: <empty>, build, run, nox11 and agpl

PR:		201201 (exp-run)
Approved by:	portmgr (mat@)
Exp run by:	antione@ (previous patch)
Differential Revision:	https://reviews.freebsd.org/D2938

1 files changed, 104 insertions, 0 deletions

diff --git a/Mk/Uses/ghostscript.mk b/Mk/Uses/ghostscript.mk
new file mode 100644
index 000000000000..9271eb0d0134
--- /dev/null
+++ b/Mk/Uses/ghostscript.mk
@@ -0,0 +1,104 @@
+# $FreeBSD$
+#
+# Provide support for ghostscript ports.
+#
+# Feature:	ghostscript
+# Usage:	USES=ghostscript or USES=ghostscript:args
+# Valid ARGS:	<version>, build, run, nox11, agpl
+#
+# version 	The chooseable versions are 7, 8 and 9. If no version is
+#		specified version 9 is selected.
+#
+#		USES=ghostscript:7	# Use Ghostscript 7
+#		USES=ghostscript:run	# Use the set default Ghostscript as a run dependancy
+#		USES=ghostscript:8,build # Use ghostscript 8 as a build dependancy.
+#
+# nox11		Indicate that the Ghostscript nox11 port is required.
+# agpl		Indicate that the Ghostscript apgl port is required.
+# build		Indicates that Ghostscript is needed at build time and adds
+#		it as BUILD_DEPENDS.
+# run		Indicates that Ghostscript is needed at run time and adds
+#		it as RUN_DEPENDS.
+#
+# If build and run are omitted, Ghostscript will be added as BUILD_DEPENDS and
+# RUN_DEPENDS.
+#
+# MAINTAINER: ports@FreeBSD.org
+
+.if !defined(_INCLUDE_USES_GHOSTSCRIPT_MK)
+_INCLUDE_USES_GHOSTSCRIPT_MK=	yes
+
+# allowed versions
+_GS_VERSION=	7 8 9
+
+_GS_ARGS=		${ghostscript_ARGS}
+
+.if ${_GS_ARGS:N[789]:Nnox11:Nagpl:Nbuild:Nrun}
+IGNORE=		Unknown ghostscript argument ${_GS_ARGS}
+.endif
+
+# Determine version number of Ghostscript to use
+.include "${PORTSDIR}/Mk/bsd.default-versions.mk"
+
+.if ${_GS_VERSION:M${GHOSTSCRIPT_DEFAULT}} == ""
+IGNORE=		Invalid GHOSTSCRIPT_DEFAULT value: ${GHOSTSCRIPT_DEFAULT}, please select one of ${_GS_VERSION}
+.endif
+
+# Make sure that no dependency or some other environment variable
+# pollutes the build/run dependency detection
+.undef _GS_BUILD_DEP
+.undef _GS_RUN_DEP
+.if ${_GS_ARGS:Mbuild}
+_GS_BUILD_DEP=	yes
+.endif
+.if ${_GS_ARGS:Mrun}
+_GS_RUN_DEP=	yes
+.endif
+
+# The port does not specify a build or run dependency, assume both are
+# required.
+.if !defined(_GS_BUILD_DEP) && !defined(_GS_RUN_DEP)
+_GS_BUILD_DEP=	yes
+_GS_RUN_DEP=	yes
+.endif
+
+_GS_SELECTED=	${GHOSTSCRIPT_DEFAULT}
+.if ${_GS_ARGS:M9}
+_GS_SELECTED:=		9
+.elif ${_GS_ARGS:M8}
+_GS_SELECTED:=		8
+.elif ${_GS_ARGS:M7}
+_GS_SELECTED:=		7
+.endif
+
+.undef _GS_AGPL_SUFFIX
+.if ${_GS_ARGS:Magpl}
+. if ${_GS_SELECTED} == "9"
+_GS_AGPL_SUFFIX=	-agpl
+. else
+IGNORE=		Ghostscript-agpl is only available in version 9
+. endif
+.endif
+
+.undef _GS_NOX11_SUFFIX
+.if ${_GS_ARGS:Mnox11} || defined(WITHOUT_X11)
+_GS_NOX11_SUFFIX=	-nox11
+.endif
+
+.endif # _INCLUDE_USES_GHOSTSCRIPT_MK
+
+.if defined(_POSTMKINCLUDED) && !defined(_INCLUDE_USES_GHOSTSCRIPT_POST_MK)
+_INCLUDE_USES_GHOSTSCRIPT_POST_MK=   yes
+
+# dependencies
+_GS_PORT=	ghostscript${_GS_SELECTED}${_GS_AGPL_SUFFIX}${_GS_NOX11_SUFFIX}
+
+.if defined(_GS_BUILD_DEP)
+BUILD_DEPENDS+=	${_GS_PORT}>=0:${PORTSDIR}/print/${_GS_PORT}
+.endif
+.if defined(_GS_RUN_DEP)
+RUN_DEPENDS+=	${_GS_PORT}>=0:${PORTSDIR}/print/${_GS_PORT}
+.endif
+
+
+.endif