- Implement USES+=tcl and USES+=tk

- Use bsd.default-versions.mk to specify the default Tcl/Tk version (8.6)
- Add warnings about the now deprecated use of USE_TCL, USE_TK, ...

  Notes:

  * USES+=tcl and USES+=tk take the following optional arguments

    - either a version in the form of XY or XY+, or 'wrapper' to depend on
      lang/tcl-wrapper or x11-toolkits/tk-wrapper

    - either 'build' (bring in build depend) or 'run' (bring in run depend)

  * it is an error to specify both 'tcl' and 'tk' in USES.

  * The functionality currently implemented via INVALID_TCL_VER and
    INVALID_TK_VER is not yet available.

Approved by:	bapt (portmgr)

1 files changed, 161 insertions, 0 deletions

diff --git a/Mk/Uses/tcl.mk b/Mk/Uses/tcl.mk
new file mode 100644
index 000000000000..1112b4441a30
--- /dev/null
+++ b/Mk/Uses/tcl.mk
@@ -0,0 +1,161 @@
+# $FreeBSD$
+#
+# vim: ts=8 noexpandtab
+#
+# Provide support to use Tcl/Tk
+#
+# MAINTAINER: tcltk@FreeBSD.org
+#
+#
+# Variables set by this file:
+#
+# TCL_VER		- Major.Minor version of Tcl
+#
+# TCLSH			- Set to full path of the Tcl interpreter
+#
+# TCL_LIBDIR		- Path where the Tcl libraries can be found
+#
+# TCL_INCLUDEDIR	- Path where the Tcl C headers can be found
+#
+#
+# TK_VER		- Major.Minor version of Tk
+#
+# WISH			- Set to full path of the Tk interpreter
+#
+# TK_LIBDIR		- Path where the Tk libraries can be found
+#
+# TK_INCLUDEDIR		- Path where the Tk C headers can be found
+#
+#
+#
+# Usage:
+#
+# USES+=	PORT[:(VERSION|wrapper),build,run]
+#
+# where PORT is one of:
+#
+# - tcl			- Depend on Tcl
+# - tk			- Depend on both Tk and Tk (Tk itself depends on Tcl)
+#
+# and VERSION is in one of the following formats:
+#
+# - (empty)		- Depend on any installed version of PORT. If none
+#   			  is installed, bring in the default version. See
+#   			  ${_TCLTK_DEFAULT_VERSION} below.
+#
+# - 84, 85, 86		- Depend on a specific version series of PORT.
+#
+# - 84+, 85+, 86+	- Depend on any installed version greater or equal to
+#   			  the specified version.
+#
+# If wrapper is specified, an additional dependency on tcl-wrapper or
+# tk-wrapper is added. It is NOT possible to select a specific version of
+# Tcl/Tk when using the wrapper.
+#
+# Build-time / Run-time only dependencies can be specified with build or run.
+#
+
+.if !defined(_INCLUDE_USES_TCL_MK)
+_INCLUDE_USES_TCL_MK=	yes
+
+_TCLTK_VALID_VERSIONS=	84 85 86
+
+.include "${PORTSDIR}/Mk/bsd.default-versions.mk"
+_TCLTK_DEFAULT_VERSION=	${TCLTK_DEFAULT:S/.//}
+
+.if ! ${_TCLTK_VALID_VERSIONS:M${_TCLTK_WANTED_VERSION}}
+IGNORE=	Invalid tcltk version ${TCLTK_DEFAULT}
+.endif
+
+# _TCLTK_PORT might be set to tk if USES+= tk was used
+_TCLTK_PORT?=	tcl
+
+# Parse arguments
+_TCL_ARGS=	${tcl_ARGS:S/,/ /g}
+
+.if ${_TCL_ARGS:M*+}
+#    using the ver+ variant
+_TCLTK_MIN_VERSION:=	${_TCL_ARGS:M*+:S/+//}
+_TCLTK_WANTED_VERSION:=	${_TCLTK_DEFAULT_VERSION}
+.endif
+
+.if ${_TCL_ARGS:M8[4-6]}
+#    assume we specified a version
+_TCLTK_WANTED_VERSION:=	${_TCL_ARGS:M8[4-6]}
+.endif
+
+.if ${_TCL_ARGS:Mwrapper} && defined(_TCLTK_WANTED_VERSION)
+IGNORE=	USES=${_TCLTK_PORT}: it is not possible to specify both a version and the wrapper: ${tcl_ARGS}
+.endif
+
+.if !defined(_TCLTK_WANTED_VERSION)
+_TCLTK_WANTED_VERSION=	${_TCLTK_DEFAULT_VERSION}
+.endif
+
+# check that the specified ver+ is valid
+.if ! ${_TCLTK_VALID_VERSIONS:M${_TCLTK_WANTED_VERSION}}
+IGNORE=	USES=${_TCLTK_PORT}: incorrect ${_TCLTK_PORT} version specified: ${_TCLTK_WANTED_VERSION}
+.endif
+
+.if defined(_TCLTK_MIN_VERSION)
+.  for _v in ${_TCLTK_VALID_VERSIONS}
+.    if ${_v} >= ${_TCLTK_MIN_VERSION} && exists(${LOCALBASE}/lib/lib${_TCLTK_PORT}${_v}.so)
+_TCLTK_WANTED_VERSION=	${_v}
+.    endif
+.  endfor
+.endif
+
+#
+# Exported variables
+#
+TCL_VER:=	${_TCLTK_WANTED_VERSION:S/8/8./}
+TCL_SHLIB_VER:=	${_TCLTK_WANTED_VERSION}
+TCLSH:=		${LOCALBASE}/bin/tclsh${TCL_VER}
+TCL_LIBDIR:=	${LOCALBASE}/lib/tcl${TCL_VER}
+TCL_INCLUDEDIR:=${LOCALBASE}/include/tcl${TCL_VER}
+
+.if ${_TCLTK_PORT} == "tk"
+TK_VER:=	${_TCLTK_WANTED_VERSION:S/8/8./}
+TK_SHLIB_VER:=	${_TCLTK_WANTED_VERSION}
+WISH:=		${LOCALBASE}/bin/wish${TCL_VER}
+TK_LIBDIR:=	${LOCALBASE}/lib/tcl${TK_VER}
+TK_INCLUDEDIR:=	${LOCALBASE}/include/tcl${TK_VER}
+.endif
+
+#
+# Dependencies
+#
+_TCLTK_BUILD_DEPENDS=
+_TCLTK_RUN_DEPENDS=
+_TCLTK_LIB_DEPENDS=
+
+# Construct the correct dependency lines (wrapper)
+.if ${_TCL_ARGS:Mwrapper}
+.  if ${_TCLTK_PORT} == "tcl"
+_TCLTK_WRAPPER_PORT=	tclsh:${PORTSDIR}/lang/tcl-wrapper
+.  elif ${_TCLTK_PORT} == "tk"
+_TCLTK_WRAPPER_PORT=	wish:${PORTSDIR}/x11-toolkits/tk-wrapper
+.  endif
+.endif
+
+# Construct the correct dependency lines (Tcl/Tk)
+.  if ${_TCLTK_PORT} == "tcl"
+_TCLTK_EXE_LINE=	tclsh${TCL_VER}:${PORTSDIR}/lang/tcl${_TCLTK_WANTED_VERSION}
+_TCLTK_LIB_LINE=	libtcl${TCL_SHLIB_VER}.so:${PORTSDIR}/lang/tcl${_TCLTK_WANTED_VERSION}
+.  elif ${_TCLTK_PORT} == "tk"
+_TCLTK_EXE_LINE=	wish${TK_VER}:${PORTSDIR}/x11-toolkits/tk${_TCLTK_WANTED_VERSION}
+_TCLTK_LIB_LINE=	libtk${TK_SHLIB_VER}.so:${PORTSDIR}/x11-toolkits/tk${_TCLTK_WANTED_VERSION}
+.endif
+
+.if ${_TCL_ARGS:Mbuild}
+BUILD_DEPENDS+=	${_TCLTK_WRAPPER_PORT} \
+		${_TCLTK_EXE_LINE}
+.elif ${_TCL_ARGS:Mrun}
+RUN_DEPENDS+=	${_TCLTK_WRAPPER_PORT} \
+		${_TCLTK_EXE_LINE}
+.else
+RUN_DEPENDS+=	${_TCLTK_WRAPPER_PORT}
+LIB_DEPENDS+=	${_TCLTK_LIB_LINE}
+.endif
+
+.endif # defined(_INCLUDE_USES_TCL_MK)