--- /dev/null
+diff -purN a/CMakeLists.txt b/CMakeLists.txt
+--- a/CMakeLists.txt 2017-07-19 21:38:48.000000000 +0100
++++ b/CMakeLists.txt 2017-08-15 14:14:02.223744929 +0100
+@@ -59,6 +59,7 @@ endif()
+ include(ParseArguments)
+ include(OCIOMacros)
+ include(ExternalProject)
++include(GNUInstallDirs)
+
+ enable_language(CXX)
+
+@@ -519,7 +520,7 @@ endif()
+ configure_file(${CMAKE_SOURCE_DIR}/share/ocio/setup_ocio.sh.in
+ ${CMAKE_CURRENT_BINARY_DIR}/share/ocio/setup_ocio.sh @ONLY)
+
+-INSTALL(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/share/ocio/setup_ocio.sh DESTINATION share/ocio/)
++INSTALL(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/share/ocio/setup_ocio.sh DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/ocio/)
+
+ ###############################################################################
+ ### CPACK ###
+@@ -634,4 +635,4 @@ file(WRITE "${CMAKE_BINARY_DIR}/OpenColo
+ message(STATUS OPENCOLORIO_FOUND=\${OPENCOLORIO_FOUND})
+ "
+ )
+-install(FILES "${CMAKE_BINARY_DIR}/OpenColorIOConfig.cmake" DESTINATION .)
++install(FILES "${CMAKE_BINARY_DIR}/OpenColorIOConfig.cmake" DESTINATION ${CMAKE_INSTALL_LIBDIR}/CMake)
+diff -purN a/docs/CMakeLists.txt b/docs/CMakeLists.txt
+--- a/docs/CMakeLists.txt 2017-07-19 21:38:48.000000000 +0100
++++ b/docs/CMakeLists.txt 2017-08-15 14:10:29.645282585 +0100
+@@ -1,68 +1,5 @@
+
+ ###############################################################################
+-### External Doc Apps ###
+-
+-# setuptools
+-# https://pypi.python.org/pypi/setuptools
+-set(SETUPTOOLS_VERSION 1.1.6)
+-ExternalProject_Add(setuptools
+- URL ${CMAKE_SOURCE_DIR}/ext/setuptools-${SETUPTOOLS_VERSION}.tar.gz
+- BUILD_IN_SOURCE 1
+- CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${EXTDIST_PYTHONPATH}
+- BUILD_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py build
+- INSTALL_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py install --prefix=${EXTDIST_ROOT}
+-)
+-
+-# docutils
+-# https://pypi.python.org/pypi/docutils
+-set(DOCUTILS_VERSION 0.11)
+-ExternalProject_Add(docutils
+- DEPENDS setuptools
+- URL ${CMAKE_SOURCE_DIR}/ext/docutils-${DOCUTILS_VERSION}.tar.gz
+- BUILD_IN_SOURCE 1
+- CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${EXTDIST_PYTHONPATH}
+- BUILD_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py build
+- INSTALL_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py install --prefix=${EXTDIST_ROOT}
+-)
+-
+-# jinja2
+-# https://pypi.python.org/pypi/Jinja2
+-set(JINJA2_VERSION 2.7.1)
+-ExternalProject_Add(Jinja2
+- DEPENDS setuptools
+- URL ${CMAKE_SOURCE_DIR}/ext/Jinja2-${JINJA2_VERSION}.tar.gz
+- BUILD_IN_SOURCE 1
+- CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${EXTDIST_PYTHONPATH}
+- BUILD_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py build
+- INSTALL_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py install --prefix=${EXTDIST_ROOT}
+-)
+-
+-# Pygments
+-# https://pypi.python.org/pypi/Pygments
+-set(PYGMENTS_VERSION 1.6)
+-ExternalProject_Add(Pygments
+- DEPENDS setuptools
+- URL ${CMAKE_SOURCE_DIR}/ext/Pygments-${PYGMENTS_VERSION}.tar.gz
+- BUILD_IN_SOURCE 1
+- CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${EXTDIST_PYTHONPATH}
+- BUILD_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py build
+- INSTALL_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py install --prefix=${EXTDIST_ROOT}
+-)
+-
+-# sphinx
+-# https://pypi.python.org/pypi/Sphinx
+-set(SPHINX_VERSION 1.2b3)
+-ExternalProject_Add(Sphinx
+- DEPENDS setuptools docutils Jinja2 Pygments
+- URL ${CMAKE_SOURCE_DIR}/ext/Sphinx-${SPHINX_VERSION}.tar.gz
+- PATCH_COMMAND patch -p1 < ${CMAKE_SOURCE_DIR}/ext/Sphinx-${SPHINX_VERSION}.patch
+- BUILD_IN_SOURCE 1
+- CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${EXTDIST_PYTHONPATH}
+- BUILD_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py build
+- INSTALL_COMMAND PYTHONPATH=${PYTHONPATH} ${PYTHON} setup.py install --prefix=${EXTDIST_ROOT} --install-scripts=${EXTDIST_ROOT}/bin
+-)
+-
+-###############################################################################
+ ### Create Doc Targets ###
+
+ message(STATUS "Create sphinx conf.py from conf.py.in")
+@@ -99,7 +36,7 @@ else()
+ endif()
+
+ add_custom_target(doc ALL
+- COMMAND PYTHONPATH=${PYTHONPATH} ${EXTDIST_BINPATH}/sphinx-build -b html . ${CMAKE_CURRENT_BINARY_DIR}/build-html
++ COMMAND sphinx-build -b html . ${CMAKE_CURRENT_BINARY_DIR}/build-html
+ DEPENDS
+ ${DEPLIBS}
+ ${CMAKE_BINARY_DIR}/docs/conf.py
+@@ -110,20 +47,18 @@ add_custom_target(doc ALL
+ COMMENT "Building html docs"
+ SOURCES ${DOCFILES})
+
+-# note: ExternalProject will not build when added to a add_custom_target this
+-# works around this problem. This seems to be fixed in the cmake ^HEAD
+-add_dependencies(doc Sphinx)
+-
+ install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/build-html/
+- DESTINATION ${CMAKE_INSTALL_PREFIX}/share/doc/OpenColorIO/html
++ DESTINATION ${CMAKE_INSTALL_DOCDIR}/html
+ PATTERN .* EXCLUDE
+ )
+
++if(OCIO_BUILD_PDF_DOCS)
++
+ find_package(LATEX)
+ if(PDFLATEX_COMPILER)
+
+ add_custom_target(latex
+- COMMAND PYTHONPATH=${PYTHONPATH} ${EXTDIST_BINPATH}/sphinx-build -b latex . ${CMAKE_CURRENT_BINARY_DIR}/build-latex
++ COMMAND sphinx-build -b latex . ${CMAKE_CURRENT_BINARY_DIR}/build-latex
+ DEPENDS
+ OpenColorIO
+ ${CMAKE_BINARY_DIR}/docs/conf.py
+@@ -133,7 +68,6 @@ if(PDFLATEX_COMPILER)
+ ${RSTDOC_OUTPUT}
+ COMMENT "Building latex doc"
+ SOURCES ${DOCFILES})
+- add_dependencies(latex Sphinx)
+
+ add_custom_target(pdf ALL
+ COMMAND ${PDFLATEX_COMPILER} OpenColorIO.tex
+@@ -143,6 +77,8 @@ if(PDFLATEX_COMPILER)
+ add_dependencies(pdf latex)
+
+ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/build-latex/OpenColorIO.pdf
+- DESTINATION ${CMAKE_INSTALL_PREFIX}/share/doc/OpenColorIO/)
++ DESTINATION ${CMAKE_INSTALL_DOCDIR})
+
+ endif()
++
++endif()
--- /dev/null
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+# Compatibility with Python 3 is declared by upstream, but it is broken in fact, check on bump
+PYTHON_COMPAT=( python{2_7,3_4,3_5,3_6} )
+
+inherit cmake-utils python-single-r1 vcs-snapshot
+
+DESCRIPTION="A color management framework for visual effects and animation"
+HOMEPAGE="http://opencolorio.org/"
+
+MY_GIT_COMMIT="7e7f10afce97254cdc1295a3594ddd5e6fb555d6"
+SRC_URI="https://github.com/imageworks/OpenColorIO/archive/${MY_GIT_COMMIT}.tar.gz \
+ -> ${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="doc opengl pdf python cpu_flags_x86_sse2 test"
+REQUIRED_USE="
+ doc? ( python )
+ python? ( ${PYTHON_REQUIRED_USE} )"
+
+RDEPEND="
+ opengl? (
+ media-libs/lcms:2
+ media-libs/openimageio
+ media-libs/glew:=
+ media-libs/freeglut
+ virtual/opengl
+ )
+ python? ( ${PYTHON_DEPS} )
+ >=dev-cpp/yaml-cpp-0.5
+ dev-libs/tinyxml"
+
+DEPEND="${RDEPEND}
+ virtual/pkgconfig
+ doc? (
+ pdf? ( dev-python/sphinx[latex,${PYTHON_USEDEP}] )
+ !pdf? ( dev-python/sphinx[${PYTHON_USEDEP}] )
+ )"
+
+# Restricting tests, bugs #439790 and #447908
+RESTRICT="test"
+
+PATCHES=( "${FILESDIR}/${PN}-1.0.9-cmake-fixes-v1.patch" )
+
+pkg_setup() {
+ use python && python-single-r1_pkg_setup
+}
+
+src_prepare() {
+ cmake-utils_src_prepare
+
+ use python && python_fix_shebang .
+}
+
+src_configure() {
+ # Missing features:
+ # - Truelight and Nuke are not in portage for now, so their support are disabled
+ # - Java bindings was not tested, so disabled
+ # Notes:
+ # - OpenImageIO is required for building ociodisplay and ocioconvert (USE opengl)
+ # - OpenGL, GLUT and GLEW is required for building ociodisplay (USE opengl)
+ local mycmakeargs=(
+ -DOCIO_BUILD_JNIGLUE=OFF
+ -DOCIO_BUILD_NUKE=OFF
+ -DOCIO_BUILD_SHARED=ON
+ -DOCIO_BUILD_STATIC=OFF
+ -DOCIO_STATIC_JNIGLUE=OFF
+ -DOCIO_BUILD_TRUELIGHT=OFF
+ -DUSE_EXTERNAL_LCMS=ON
+ -DUSE_EXTERNAL_TINYXML=ON
+ -DUSE_EXTERNAL_YAML=ON
+ -DOCIO_BUILD_DOCS="$(usex doc)"
+ -DOCIO_BUILD_APPS="$(usex opengl)"
+ -DOCIO_BUILD_PDF_DOCS="$(usex pdf)"
+ -DOCIO_BUILD_PYGLUE="$(usex python)"
+ -DOCIO_USE_SSE="$(usex cpu_flags_x86_sse2)"
+ -DOCIO_BUILD_TESTS="$(usex test)"
+ -DCMAKE_INSTALL_DOCDIR="share/doc/${PF}"
+ )
+ cmake-utils_src_configure
+}