EGL/X11 (Wayland, pt 1)

cmake/Modules/FindEGL.cmake

@@ -0,0 +1,53 @@
+# - Try to Find EGL
+# Once done, this will define
+#
+#  EGL_FOUND - system has EGL installed.
+#  EGL_INCLUDE_DIRS - directories which contain the EGL headers.
+#  EGL_LIBRARIES - libraries required to link against EGL.
+#  EGL_DEFINITIONS - Compiler switches required for using EGL.
+#
+# Copyright (C) 2012 Intel Corporation. All rights reserved.
+#               2020 Georges Basile Stavracas Neto
+#
+# 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 above copyright
+#     notice, this list of conditions and the following disclaimer.
+# 2.  Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in the
+#     documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``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 COPYRIGHT HOLDER OR ITS
+# CONTRIBUTORS 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.
+
+
+find_package(PkgConfig)
+
+pkg_check_modules(PC_EGL egl)
+
+if (PC_EGL_FOUND)
+    set(EGL_DEFINITIONS ${PC_EGL_CFLAGS_OTHER})
+endif ()
+
+find_path(EGL_INCLUDE_DIRS NAMES EGL/egl.h
+    HINTS ${PC_EGL_INCLUDE_DIR} ${PC_EGL_INCLUDE_DIRS}
+)
+
+find_library(EGL_LIBRARIES NAMES egl EGL
+    HINTS ${PC_EGL_LIBRARY_DIRS}
+)
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(EGL DEFAULT_MSG EGL_INCLUDE_DIRS EGL_LIBRARIES)
+
+mark_as_advanced(EGL_INCLUDE_DIRS EGL_LIBRARIES)

deps/glad/CMakeLists.txt

@@ -3,7 +3,8 @@ project(glad)
 find_package(OpenGL)
 
 if(NOT WIN32 AND NOT APPLE)
-	find_package(X11)
+	find_package(X11 REQUIRED)
+	find_package(EGL REQUIRED)
 endif()
 
 set(glad_SOURCES
@@ -19,7 +20,9 @@ if(WIN32)
 		obsglad.rc)
 elseif(NOT APPLE)
 	set(glad_PLATFORM_SOURCES
+		src/glad_egl.c
 		src/glad_glx.c
+		include/glad/glad_egl.h
 		include/glad/glad_glx.h)
 endif()
 
@@ -28,7 +31,9 @@ set(glad_include_dirs
 
 if (UNIX AND NOT APPLE)
 list (APPEND glad_include_dirs
-	PRIVATE ${X11_X11_INCLUDE_PATH})
+	PRIVATE
+		${X11_X11_INCLUDE_PATH}
+		${EGL_INCLUDE_DIRS})
 endif()
 
 add_library(glad SHARED
@@ -53,7 +58,9 @@ endif()
 
 if(NOT WIN32 AND NOT APPLE)
 	set(glad_PLATFORM_DEPS
-		${X11_X11_LIB})
+		${X11_X11_LIB}
+		${EGL_LIBRARIES})
+
 	# only link to libdl on linux
 	if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 		set(glad_PLATFORM_DEPS