From c232f90d6e7be76af5e976fdcce41b148eb29f45 Mon Sep 17 00:00:00 2001
From: Gregory Hainaut <gregory.hainaut@gmail.com>
Date: Fri, 3 Feb 2017 23:30:25 +0100
Subject: [PATCH] cmake: add an option to enable openCL

Note: nothing work
---
 cmake/BuildParameters.cmake |  1 +
 cmake/CheckLib.cmake        | 31 +++++++++++--------------------
 cmake/SearchForStuff.cmake  |  3 +++
 plugins/GSdx/CMakeLists.txt |  8 ++++++++
 4 files changed, 23 insertions(+), 20 deletions(-)

diff --git a/cmake/BuildParameters.cmake b/cmake/BuildParameters.cmake
index fe61474ef4..c9715bebf4 100644
--- a/cmake/BuildParameters.cmake
+++ b/cmake/BuildParameters.cmake
@@ -35,6 +35,7 @@ option(USE_VTUNE "Plug VTUNE to profile GSdx JIT.")
 #-------------------------------------------------------------------------------
 option(GLSL_API "Replace ZZogl CG backend by GLSL (experimental option)")
 option(EGL_API "Use EGL on ZZogl/GSdx (experimental/developer option)")
+option(OPENCL_API "Add OpenCL suppport on GSdx")
 option(REBUILD_SHADER "Rebuild GLSL/CG shader (developer option)")
 option(BUILD_REPLAY_LOADERS "Build GS replayer to ease testing (developer option)")
 option(GSDX_LEGACY "Build a GSdx legacy plugin compatible with GL3.3")
diff --git a/cmake/CheckLib.cmake b/cmake/CheckLib.cmake
index ad7cef1800..9884728fab 100644
--- a/cmake/CheckLib.cmake
+++ b/cmake/CheckLib.cmake
@@ -17,7 +17,7 @@ macro(check_lib var lib)
 		# Make sure include directories for headers found using find_path below
 		# are re-added when reconfiguring
 		include_directories(${${var}_INCLUDE})
-		_internal_message("-- ${var} found")
+		_internal_message("-- ${var} found pkg")
 	else()
         find_library(${var}_LIBRARIES ${lib})
 		if(_arg_list)
@@ -25,26 +25,17 @@ macro(check_lib var lib)
 		else()
 			set(${var}_INCLUDE FALSE)
 		endif()
-        if (${lib})
-            if(${var}_LIBRARIES AND ${var}_INCLUDE)
-                include_directories(${${var}_INCLUDE})
-                _internal_message("-- ${var} found")
-                set(${var}_FOUND 1 CACHE INTERNAL "")
-            elseif(${var}_LIBRARIES)
-                _internal_message("-- ${var} not found (miss include)")
-            elseif(${var}_INCLUDE)
-                _internal_message("-- ${var} not found (miss lib)")
-            else()
-                _internal_message("-- ${var} not found")
-            endif()
+
+        if(${var}_LIBRARIES AND ${var}_INCLUDE)
+            include_directories(${${var}_INCLUDE})
+            _internal_message("-- ${var} found")
+            set(${var}_FOUND 1 CACHE INTERNAL "")
+        elseif(${var}_LIBRARIES)
+            _internal_message("-- ${var} not found (miss include)")
+        elseif(${var}_INCLUDE)
+            _internal_message("-- ${var} not found (miss lib)")
         else()
-            if(${var}_INCLUDE)
-                include_directories(${${var}_INCLUDE})
-                _internal_message("-- ${var} found")
-                set(${var}_FOUND 1 CACHE INTERNAL "")
-            else()
-                _internal_message("-- ${var} not found")
-            endif()
+            _internal_message("-- ${var} not found")
         endif()
 	endif()
 endmacro()
diff --git a/cmake/SearchForStuff.cmake b/cmake/SearchForStuff.cmake
index 42d7e12ba8..f805e4e249 100644
--- a/cmake/SearchForStuff.cmake
+++ b/cmake/SearchForStuff.cmake
@@ -92,6 +92,9 @@ endif()
 if(EGL_API)
     check_lib(EGL EGL EGL/egl.h)
 endif()
+if(OPENCL_API)
+    check_lib(OPENCL OpenCL CL/cl.hpp)
+endif()
 check_lib(PORTAUDIO portaudio portaudio.h pa_linux_alsa.h)
 check_lib(SOUNDTOUCH SoundTouch soundtouch/SoundTouch.h)
 
diff --git a/plugins/GSdx/CMakeLists.txt b/plugins/GSdx/CMakeLists.txt
index 4a3e5a2b26..29f7c85d1f 100644
--- a/plugins/GSdx/CMakeLists.txt
+++ b/plugins/GSdx/CMakeLists.txt
@@ -39,6 +39,10 @@ if(NOT USE_CLANG)
     set(GSdxFinalFlags ${GSdxFinalFlags} -fabi-version=6)
 endif()
 
+if(OPENCL_API)
+    set(GSdxFinalFlags ${GSdxFinalFlags} -DENABLE_OPENCL)
+endif()
+
 set(GSdxSources
     GLLoader.cpp
     GLState.cpp
@@ -210,6 +214,10 @@ if(USE_VTUNE)
     set(GSdxFinalLibs ${GSdxFinalLibs} ${VTUNE_LIBRARIES})
 endif()
 
+if(OPENCL_FOUND)
+    set(GSdxFinalLibs ${GSdxFinalLibs} ${OPENCL_LIBRARIES})
+endif()
+
 # Generate Glsl header file. Protect with REBUILD_SHADER to avoid build-dependency on PERL
 if (REBUILD_SHADER)
     add_custom_command(OUTPUT res/glsl_source.h COMMAND perl ${CMAKE_SOURCE_DIR}/linux_various/glsl2h.pl)