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kwin/cmake/modules/Findlibhybris.cmake
Martin Graesslin e12400a675 Add a hwcomposer backend based on libhybris 
This backend interacts with libhybris to create a hwcomposer which is
used for creating the egl context and surface. The initial version of
this backend is based on test_hwcomposer.cpp provided by libhybris.

Please note that using the hwcomposer backend requires a newer libepoxy,
the latest stable release is not able to bring up OpenGLES, so one needs
a master build of libepoxy.

Notes on licensing:
libhybris is Apache 2.0 licensed, which is not compatile with GPLv2.
But it is compatible with GPLv3. Thus the source files in the hwcomposer
backend are licensed GPLv3+ and not GPLv2+ as the rest of KWin. If one
uses KWin without the hwcomposer backend (which is obviously the default)
the licence doesn't change. But if the hwcomposer backend is used the
overall license of KWin changes to GPLv3+.
2015-05-08 10:28:52 +02:00

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#.rst:
# Findlibhybris
# -------
#
# Try to find libhybris on a Unix system.
#=============================================================================
# Copyright 2015 Martin Gräßlin <mgraesslin@kde.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#=============================================================================
if(CMAKE_VERSION VERSION_LESS 2.8.12)
message(FATAL_ERROR "CMake 2.8.12 is required by Findlibhybris.cmake")
endif()
if(CMAKE_MINIMUM_REQUIRED_VERSION VERSION_LESS 2.8.12)
message(AUTHOR_WARNING "Your project should require at least CMake 2.8.12 to use Findlibhybris.cmake")
endif()
if(NOT WIN32)
# Use pkg-config to get the directories and then use these values
# in the FIND_PATH() and FIND_LIBRARY() calls
find_package(PkgConfig)
pkg_check_modules(PKG_libhardware QUIET libhardware)
pkg_check_modules(PKG_androidheaders QUIET android-headers)
pkg_check_modules(PKG_hwcomposerwindow QUIET hwcomposer-egl)
pkg_check_modules(PKG_hybriseglplatform QUIET hybris-egl-platform)
pkg_check_modules(PKG_hybrissync QUIET libsync)
set(libhardware_DEFINITIONS ${PKG_libhardware_CFLAGS_OTHER})
set(libhardware_VERSION ${PKG_libhardware_VERSION})
find_library(libhardware_LIBRARY
NAMES
libhardware.so
HINTS
${PKG_libhardware_LIBRARY_DIRS}
)
find_path(libhardware_INCLUDE_DIR
NAMES
android-version.h
HINTS
${PKG_androidheaders_INCLUDE_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(libhardware
FOUND_VAR
libhardware_FOUND
REQUIRED_VARS
libhardware_LIBRARY
libhardware_INCLUDE_DIR
VERSION_VAR
libhardware_VERSION
)
if(libhardware_FOUND AND NOT TARGET libhybris::libhardware)
add_library(libhybris::libhardware UNKNOWN IMPORTED)
set_target_properties(libhybris::libhardware PROPERTIES
IMPORTED_LOCATION "${libhardware_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${libhardware_DEFINITIONS}"
INTERFACE_INCLUDE_DIRECTORIES "${libhardware_INCLUDE_DIR}"
)
endif()
mark_as_advanced(libhardware_LIBRARY libhardware_INCLUDE_DIR)
##############################################
# hwcomposerWindow
##############################################
set(libhwcomposer_DEFINITIONS ${PKG_hwcomposerwindow_CFLAGS_OTHER})
set(libhwcomposer_VERSION ${PKG_hwcomposerwindow_VERSION})
find_library(libhwcomposer_LIBRARY
NAMES
libhybris-hwcomposerwindow.so
HINTS
${PKG_hwcomposerwindow_LIBRARY_DIRS}
)
find_path(libhwcomposer_INCLUDE_DIR
NAMES
hwcomposer_window.h
HINTS
${PKG_hwcomposerwindow_INCLUDE_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(libhwcomposer
FOUND_VAR
libhwcomposer_FOUND
REQUIRED_VARS
libhwcomposer_LIBRARY
libhwcomposer_INCLUDE_DIR
VERSION_VAR
libhwcomposer_VERSION
)
if(libhwcomposer_FOUND AND NOT TARGET libhybris::hwcomposer)
add_library(libhybris::hwcomposer UNKNOWN IMPORTED)
set_target_properties(libhybris::hwcomposer PROPERTIES
IMPORTED_LOCATION "${libhwcomposer_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${libhardware_DEFINITIONS}"
INTERFACE_INCLUDE_DIRECTORIES "${libhwcomposer_INCLUDE_DIR}"
)
endif()
mark_as_advanced(libhwcomposer_LIBRARY libhwcomposer_INCLUDE_DIR)
##############################################
# hybriseglplatform
##############################################
set(hybriseglplatform_DEFINITIONS ${PKG_hybriseglplatform_CFLAGS_OTHER})
set(hybriseglplatform_VERSION ${PKG_hybriseglplatform_VERSION})
find_library(hybriseglplatform_LIBRARY
NAMES
libhybris-eglplatformcommon.so
HINTS
${PKG_hybriseglplatform_LIBRARY_DIRS}
)
find_path(hybriseglplatform_INCLUDE_DIR
NAMES
eglplatformcommon.h
HINTS
${PKG_hybriseglplatform_INCLUDE_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(hybriseglplatform
FOUND_VAR
hybriseglplatform_FOUND
REQUIRED_VARS
hybriseglplatform_LIBRARY
hybriseglplatform_INCLUDE_DIR
VERSION_VAR
hybriseglplatform_VERSION
)
if(hybriseglplatform_FOUND AND NOT TARGET libhybris::hybriseglplatform)
add_library(libhybris::hybriseglplatform UNKNOWN IMPORTED)
set_target_properties(libhybris::hybriseglplatform PROPERTIES
IMPORTED_LOCATION "${hybriseglplatform_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${hybriseglplatform_DEFINITIONS}"
INTERFACE_INCLUDE_DIRECTORIES "${hybriseglplatform_INCLUDE_DIR}"
)
endif()
mark_as_advanced(hybriseglplatform_LIBRARY hybriseglplatform_INCLUDE_DIR)
##############################################
# hybrissync
##############################################
set(hybrissync_DEFINITIONS ${PKG_hybrissync_CFLAGS_OTHER})
set(hybrissync_VERSION ${PKG_hybrissync_VERSION})
find_library(hybrissync_LIBRARY
NAMES
libsync.so
HINTS
${PKG_hybrissync_LIBRARY_DIRS}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(hybrissync
FOUND_VAR
hybrissync_FOUND
REQUIRED_VARS
hybrissync_LIBRARY
VERSION_VAR
hybrissync_VERSION
)
if(hybrissync_FOUND AND NOT TARGET libhybris::sync)
add_library(libhybris::sync UNKNOWN IMPORTED)
set_target_properties(libhybris::sync PROPERTIES
IMPORTED_LOCATION "${hybrissync_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${hybrissync_DEFINITIONS}"
)
endif()
mark_as_advanced(hybrissync_LIBRARY)
if(libhardware_FOUND AND libhwcomposer_FOUND AND hybriseglplatform_FOUND AND hybrissync_FOUND)
set(libhybris_FOUND TRUE)
else()
set(libhybris_FOUND FALSE)
endif()
else()
message(STATUS "Findlibhardware.cmake cannot find libhybris on Windows systems.")
set(libhybris_FOUND FALSE)
endif()
include(FeatureSummary)
set_package_properties(libhybris PROPERTIES
URL "https://github.com/libhybris/libhybris"
DESCRIPTION "libhybris allows to run bionic-based HW adaptations in glibc systems."
)
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