From cdab00c7eee15209cfad8fba059a872118a459b2 Mon Sep 17 00:00:00 2001 From: Simon Hausmann Date: Wed, 13 Feb 2019 10:38:00 +0100 Subject: Replace "our" FindEGL.cmake with the ECM version The ECM version now also does a compile test, which was the only real "functional" difference. Change-Id: I1d5cd590359feba7c7a38ff374992349d5943070 Reviewed-by: Volker Krause --- .../extra-cmake-modules/find-modules/FindEGL.cmake | 166 +++++++++++++++++++++ 1 file changed, 166 insertions(+) create mode 100644 cmake/3rdparty/extra-cmake-modules/find-modules/FindEGL.cmake (limited to 'cmake/3rdparty/extra-cmake-modules/find-modules') diff --git a/cmake/3rdparty/extra-cmake-modules/find-modules/FindEGL.cmake b/cmake/3rdparty/extra-cmake-modules/find-modules/FindEGL.cmake new file mode 100644 index 0000000000..5277d12378 --- /dev/null +++ b/cmake/3rdparty/extra-cmake-modules/find-modules/FindEGL.cmake @@ -0,0 +1,166 @@ +#.rst: +# FindEGL +# ------- +# +# Try to find EGL. +# +# This will define the following variables: +# +# ``EGL_FOUND`` +# True if (the requested version of) EGL is available +# ``EGL_VERSION`` +# The version of EGL; note that this is the API version defined in the +# headers, rather than the version of the implementation (eg: Mesa) +# ``EGL_LIBRARIES`` +# This can be passed to target_link_libraries() instead of the ``EGL::EGL`` +# target +# ``EGL_INCLUDE_DIRS`` +# This should be passed to target_include_directories() if the target is not +# used for linking +# ``EGL_DEFINITIONS`` +# This should be passed to target_compile_options() if the target is not +# used for linking +# +# If ``EGL_FOUND`` is TRUE, it will also define the following imported target: +# +# ``EGL::EGL`` +# The EGL library +# +# In general we recommend using the imported target, as it is easier to use. +# Bear in mind, however, that if the target is in the link interface of an +# exported library, it must be made available by the package config file. +# +# Since pre-1.0.0. + +#============================================================================= +# Copyright 2014 Alex Merry +# Copyright 2014 Martin Gräßlin +# +# 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. +#============================================================================= + +include(${CMAKE_CURRENT_LIST_DIR}/ECMFindModuleHelpersStub.cmake) +include(CheckCXXSourceCompiles) +include(CMakePushCheckState) + +ecm_find_package_version_check(EGL) + +# 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_EGL QUIET egl) + +set(EGL_DEFINITIONS ${PKG_EGL_CFLAGS_OTHER}) + +find_path(EGL_INCLUDE_DIR + NAMES + egl.h + HINTS + ${PKG_EGL_INCLUDE_DIRS} + PATH_SUFFIXES + EGL +) +find_library(EGL_LIBRARY + NAMES + EGL + HINTS + ${PKG_EGL_LIBRARY_DIRS} +) + +# NB: We do *not* use the version information from pkg-config, as that +# is the implementation version (eg: the Mesa version) +if(EGL_INCLUDE_DIR) + # egl.h has defines of the form EGL_VERSION_x_y for each supported + # version; so the header for EGL 1.1 will define EGL_VERSION_1_0 and + # EGL_VERSION_1_1. Finding the highest supported version involves + # finding all these defines and selecting the highest numbered. + file(READ "${EGL_INCLUDE_DIR}/egl.h" _EGL_header_contents) + string(REGEX MATCHALL + "[ \t]EGL_VERSION_[0-9_]+" + _EGL_version_lines + "${_EGL_header_contents}" + ) + unset(_EGL_header_contents) + foreach(_EGL_version_line ${_EGL_version_lines}) + string(REGEX REPLACE + "[ \t]EGL_VERSION_([0-9_]+)" + "\\1" + _version_candidate + "${_EGL_version_line}" + ) + string(REPLACE "_" "." _version_candidate "${_version_candidate}") + if(NOT DEFINED EGL_VERSION OR EGL_VERSION VERSION_LESS _version_candidate) + set(EGL_VERSION "${_version_candidate}") + endif() + endforeach() + unset(_EGL_version_lines) +endif() + +cmake_push_check_state(RESET) +list(APPEND CMAKE_REQUIRED_LIBRARIES "${EGL_LIBRARY}") +list(APPEND CMAKE_REQUIRED_INCLUDES "${EGL_INCLUDE_DIR}") + +check_cxx_source_compiles(" +#include + +int main(int argc, char *argv[]) { + EGLint x = 0; EGLDisplay dpy = 0; EGLContext ctx = 0; + eglDestroyContext(dpy, ctx); +}" HAVE_EGL) + +cmake_pop_check_state() + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(EGL + FOUND_VAR + EGL_FOUND + REQUIRED_VARS + EGL_LIBRARY + EGL_INCLUDE_DIR + HAVE_EGL + VERSION_VAR + EGL_VERSION +) + +if(EGL_FOUND AND NOT TARGET EGL::EGL) + add_library(EGL::EGL UNKNOWN IMPORTED) + set_target_properties(EGL::EGL PROPERTIES + IMPORTED_LOCATION "${EGL_LIBRARY}" + INTERFACE_COMPILE_OPTIONS "${EGL_DEFINITIONS}" + INTERFACE_INCLUDE_DIRECTORIES "${EGL_INCLUDE_DIR}" + ) +endif() + +mark_as_advanced(EGL_LIBRARY EGL_INCLUDE_DIR HAVE_EGL) + +# compatibility variables +set(EGL_LIBRARIES ${EGL_LIBRARY}) +set(EGL_INCLUDE_DIRS ${EGL_INCLUDE_DIR}) +set(EGL_VERSION_STRING ${EGL_VERSION}) + +include(FeatureSummary) +set_package_properties(EGL PROPERTIES + URL "https://www.khronos.org/egl/" + DESCRIPTION "A platform-agnostic mechanism for creating rendering surfaces for use with other graphics libraries, such as OpenGL|ES and OpenVG." +) -- cgit v1.2.3