# Try to find Wayland on a Unix system
#
# This will define:
#
#   WAYLAND_FOUND       - True if Wayland is found
#   WAYLAND_LIBRARIES   - Link these to use Wayland
#   WAYLAND_INCLUDE_DIR - Include directory for Wayland
#   WAYLAND_DEFINITIONS - Compiler flags for using Wayland
#
# In addition the following more fine grained variables will be defined:
#
#   WAYLAND_CLIENT_FOUND  WAYLAND_CLIENT_INCLUDE_DIR  WAYLAND_CLIENT_LIBRARIES
#   WAYLAND_SERVER_FOUND  WAYLAND_SERVER_INCLUDE_DIR  WAYLAND_SERVER_LIBRARIES
#   WAYLAND_EGL_FOUND     WAYLAND_EGL_INCLUDE_DIR     WAYLAND_EGL_LIBRARIES
#
# Copyright (c) 2013 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 (NOT WIN32)
	IF (WAYLAND_INCLUDE_DIR AND WAYLAND_LIBRARIES)
		# In the cache already
		SET(WAYLAND_FIND_QUIETLY TRUE)
	ENDIF ()

	# 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_WAYLAND QUIET wayland-client wayland-server wayland-egl wayland-cursor)

	SET(WAYLAND_DEFINITIONS ${PKG_WAYLAND_CFLAGS})

	FIND_PATH(WAYLAND_CLIENT_INCLUDE_DIR  NAMES wayland-client.h HINTS ${PKG_WAYLAND_INCLUDE_DIRS})
	FIND_PATH(WAYLAND_SERVER_INCLUDE_DIR  NAMES wayland-server.h HINTS ${PKG_WAYLAND_INCLUDE_DIRS})
	FIND_PATH(WAYLAND_EGL_INCLUDE_DIR     NAMES wayland-egl.h    HINTS ${PKG_WAYLAND_INCLUDE_DIRS})
	FIND_PATH(WAYLAND_CURSOR_INCLUDE_DIR  NAMES wayland-cursor.h HINTS ${PKG_WAYLAND_INCLUDE_DIRS})

	FIND_LIBRARY(WAYLAND_CLIENT_LIBRARIES NAMES wayland-client   HINTS ${PKG_WAYLAND_LIBRARY_DIRS})
	FIND_LIBRARY(WAYLAND_SERVER_LIBRARIES NAMES wayland-server   HINTS ${PKG_WAYLAND_LIBRARY_DIRS})
	FIND_LIBRARY(WAYLAND_EGL_LIBRARIES    NAMES wayland-egl      HINTS ${PKG_WAYLAND_LIBRARY_DIRS})
	FIND_LIBRARY(WAYLAND_CURSOR_LIBRARIES NAMES wayland-cursor   HINTS ${PKG_WAYLAND_LIBRARY_DIRS})

	set(WAYLAND_INCLUDE_DIR ${WAYLAND_CLIENT_INCLUDE_DIR} ${WAYLAND_SERVER_INCLUDE_DIR} ${WAYLAND_EGL_INCLUDE_DIR} ${WAYLAND_CURSOR_INCLUDE_DIR})

	set(WAYLAND_LIBRARIES ${WAYLAND_CLIENT_LIBRARIES} ${WAYLAND_SERVER_LIBRARIES} ${WAYLAND_EGL_LIBRARIES} ${WAYLAND_CURSOR_LIBRARIES})

	list(REMOVE_DUPLICATES WAYLAND_INCLUDE_DIR)

	include(FindPackageHandleStandardArgs)

	FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND_CLIENT  DEFAULT_MSG  WAYLAND_CLIENT_LIBRARIES  WAYLAND_CLIENT_INCLUDE_DIR)
	FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND_SERVER  DEFAULT_MSG  WAYLAND_SERVER_LIBRARIES  WAYLAND_SERVER_INCLUDE_DIR)
	FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND_EGL     DEFAULT_MSG  WAYLAND_EGL_LIBRARIES     WAYLAND_EGL_INCLUDE_DIR)
	FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND_CURSOR  DEFAULT_MSG  WAYLAND_CURSOR_LIBRARIES  WAYLAND_CURSOR_INCLUDE_DIR)
	FIND_PACKAGE_HANDLE_STANDARD_ARGS(WAYLAND         DEFAULT_MSG  WAYLAND_LIBRARIES         WAYLAND_INCLUDE_DIR)

	MARK_AS_ADVANCED(
		WAYLAND_INCLUDE_DIR         WAYLAND_LIBRARIES
		WAYLAND_CLIENT_INCLUDE_DIR  WAYLAND_CLIENT_LIBRARIES
		WAYLAND_SERVER_INCLUDE_DIR  WAYLAND_SERVER_LIBRARIES
		WAYLAND_EGL_INCLUDE_DIR     WAYLAND_EGL_LIBRARIES
		WAYLAND_CURSOR_INCLUDE_DIR  WAYLAND_CURSOR_LIBRARIES
	)

ENDIF ()