Add a FindEGL module

This module finds the egl library through pkg-config.

REVIEW: 116014

1 files changed, 79 insertions, 0 deletions

diff --git a/find-modules/FindEGL.cmake b/find-modules/FindEGL.cmake
new file mode 100644
index 00000000..6237f5cb
--- /dev/null
+++ b/find-modules/FindEGL.cmake
@@ -0,0 +1,79 @@
+# Try to find EGL on a Unix system
+#
+# This will define:
+#
+#   EGL_FOUND        - True if EGL is available
+#   EGL_LIBRARIES    - Link these to use EGL
+#   EGL_INCLUDE_DIRS - Include directory for EGL
+#   EGL_DEFINITIONS  - Compiler flags for using EGL
+#
+# Additionally, the following imported targets will be defined:
+#
+#   EGL::EGL
+#
+# Copyright (c) 2014 Martin Gräßlin <mgraesslin@kde.org>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+if(CMAKE_VERSION VERSION_LESS 2.8.12)
+    message(FATAL_ERROR "CMake 2.8.12 is required by FindEGL.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 FindEGL.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_EGL QUIET ${pkgConfigModules})
+
+    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}
+    )
+
+    set(EGL_LIBRARIES ${EGL_LIBRARY})
+    set(EGL_INCLUDE_DIRS ${EGL_INCLUDE_DIR})
+
+    include(FindPackageHandleStandardArgs)
+    find_package_handle_standard_args(EGL
+        FOUND_VAR
+            EGL_FOUND
+        REQUIRED_VARS
+            EGL_LIBRARY
+            EGL_INCLUDE_DIR
+    )
+
+    if(EGL_FOUND AND NOT TARGET EGL::EGL)
+        add_library(EGL::EGL UNKNOWN IMPORTED)
+        set_target_properties(EGL::EGL PROPERTIES
+            IMPORTED_LOCATION "${EGL_LIBRARY}"
+            INTERFACE_COMPILE_OPTIONS "${EGL_DEFINITIONS}"
+            INTERFACE_INCLUDE_DIRECTORIES "${EGL_INCLUDE_DIR}"
+        )
+    endif()
+
+else()
+    message(STATUS "FindEGL.cmake cannot find EGL on Windows systems. Try finding WGL instead.")
+    set(EGL_FOUND FALSE)
+endif()
+
+include(FeatureSummary)
+set_package_properties(EGL PROPERTIES
+    URL "https://www.khronos.org/egl/"
+    DESCRIPTION "EGL provides a platform-agnostic mechanism for creating rendering surfaces for use with other graphics libraries, such as OpenGL|ES and OpenVG."
+)