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#.rst:
# Find EGL
# --------
#
# Finds the EGL library. This module defines:
#
# EGL_FOUND - True if EGL library is found
# EGL::EGL - EGL imported target
#
# Additionally these variables are defined for internal usage:
#
# EGL_LIBRARY - EGL library
# EGL_INCLUDE_DIR - Include dir
#
#
# This file is part of Magnum.
#
# Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
# Vladimír Vondruš <mosra@centrum.cz>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
# Under Emscripten, GL is linked implicitly. With MINIMAL_RUNTIME you need to
# specify -lGL. Simply set the library name to that.
if(CORRADE_TARGET_EMSCRIPTEN)
set(EGL_LIBRARY GL CACHE STRING "Path to a library." FORCE)
else()
find_library(EGL_LIBRARY NAMES
EGL
# ANGLE (CMake doesn't search for lib prefix on Windows)
libEGL
# On iOS a part of OpenGLES
OpenGLES)
endif()
# Include dir
find_path(EGL_INCLUDE_DIR NAMES
EGL/egl.h
# iOS
EAGL.h)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(EGL DEFAULT_MSG
EGL_LIBRARY
EGL_INCLUDE_DIR)
if(NOT TARGET EGL::EGL)
# Work around BUGGY framework support on macOS. Do this also in case of
# Emscripten, since there we don't have a location either.
# http://public.kitware.com/pipermail/cmake/2016-April/063179.html
if((APPLE AND ${EGL_LIBRARY} MATCHES "\\.framework$") OR CORRADE_TARGET_EMSCRIPTEN)
add_library(EGL::EGL INTERFACE IMPORTED)
set_property(TARGET EGL::EGL APPEND PROPERTY
INTERFACE_LINK_LIBRARIES ${EGL_LIBRARY})
else()
add_library(EGL::EGL UNKNOWN IMPORTED)
set_property(TARGET EGL::EGL PROPERTY
IMPORTED_LOCATION ${EGL_LIBRARY})
endif()
set_target_properties(EGL::EGL PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${EGL_INCLUDE_DIR})
endif()
mark_as_advanced(EGL_LIBRARY EGL_INCLUDE_DIR)
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