# $Id$

PortSystem 1.0

name			enblend-devel
version			3.1cvs
# revision		20080118

categories		graphics
maintainers		nomaintainer@macports.org
description		a tool to composite images
long_description	Enblend and enfuse are tools to composite overlapping \
			images with invisible (or very difficult to see) \
			seams. The sources are pulled straight from CVS - so \
			be careful, this is not a release version.

homepage		http://enblend.sourceforge.net/
distname		enblend
platforms		darwin

fetch.type		cvs
cvs.root		:pserver:anonymous@enblend.cvs.sourceforge.net:/cvsroot/enblend
cvs.module		enblend

# It's possible to select a CS tag to build from (or a fixed date). Just
# uncomment and add as neccessary.
#
# cvs.date		2008/01/18
# cvs.tag		HEAD

depends_build		port:autoconf \
			port:automake

depends_lib		port:lcms \
			port:boost \
			port:tiff \
			port:jpeg \
			port:libpng \
			port:libxmi \
			port:openexr \
			port:zlib


# We need to create our build infrastructure first, this generates the
# neccessary files and runs autoconf/automake.
#
# The pre-configure commands for the universal variant is an evil hack - I
# don't know how to deal with Apple setting the SDK folder as root prefix for
# all library dependencies.
# This workaround is very bad style, but I'm trying to get a universal build
# for testing. It will definitely fail for all ${prefix} that don't use the
# '/opt' directory. And it will break things, if you already did set a link
# to '/opt' on your SDK root directory.
#
# Right now I disabled universal builds, as they don't work for me (due to
# incompatibilities with the 'tiff' port (see MacPorts ticket #13946,
# <http://trac.macosforge.org/projects/macports/ticket/13946>). If it works
# for you, just uncomment the parts below - but remember, it's still an evil
# hack:
#
#pre-configure {
#	if {[variant_isset universal]} {
#		ui_msg ""
#		ui_msg "**************************************************"
#		ui_msg ""
#		ui_msg "Adding symbolic link to '/opt' into the SDK at" 
#		ui_msg "'/Developer/SDKs/MacOSX10.4u.sdk/' ..."
#		ui_msg ""
#		ui_msg "**************************************************"
#		ui_msg ""
#		system "ln -s /opt /Developer/SDKs/MacOSX10.4u.sdk/opt"
#	}
#
#	cd ${worksrcpath}
#	system "make -f Makefile.cvs"
#}
#
#post-build {
#	if {[variant_isset universal]} {
#		ui_msg ""
#		ui_msg "**************************************************"
#		ui_msg ""
#		ui_msg "Removing symbolic link from the SDK root folder."
#		ui_msg ""
#		ui_msg "**************************************************"
#		ui_msg ""
#		system "rm /Developer/SDKs/MacOSX10.4u.sdk/opt"
#	}
#}
#
# and comment out these:
#
universal_variant	no

pre-configure {
	cd ${worksrcpath}
	system "make -f Makefile.cvs"
}


variant imagecache \
	description {Builds with image cache to allow processing of large files} \
	{
		configure.args-append		--enable-image-cache=yes
	}

# This variant uses GPU support. At the moment this doesn't work with the
# static "standalone" variant, as it would require more fiddling with the
# patchfile to add the glew libraries hardcoded, too.
#
# I didn't test this and I doubt anyone really needs it - but anyway: here
# it is.
#
variant gpu \
	conflicts standalone \
	description {Builds port with GPU support, requires OpenGL and GLEW} \
	{
		depends_lib-append		port:glew
		configure.args-append		--with-apple-opengl-framework
	}

# This one tries to generate a static build for redistribution - so Mac users
# without MacPorts can also install it. Due to limitations in Mac OS X it is
# quite hard to build static binaries, so this one still links against some
# libraries provided by Apple in '/usr/lib'.
#
# I don't know how to change the library tests for autoconf/automake, so right
# now I just use a dirty hack. The configure script checks for the libraries
# in '/opt/local/lib', but the list it builds is substituted by a hard coded
# list of static libraries with our patchfile. This variant builds for
# installation in '/usr/local' instead of the MacPorts default location
# (that would be ${prefix}, usually '/opt/local').
#
# This will probably break sometime (as soon as the dependencies and libraries
# used change), so watch out! I'll try to come up with a better solution.
#
variant standalone \
	description {Builds a standalone version to install in '/usr/local'} \
	{
		configure.pre_args-delete	--prefix=${prefix}
		configure.pre_args-append	--prefix=/usr/local
		destroot.violate_mtree		yes

		patchfiles			patch-configure.in
		configure.args-append		--enable-static
		configure.ldflags		-L/usr/lib \
						-L${prefix}/lib
	}