gsdx-linux: Don't enable EGL by default

I was hoping that EGL become a standard much more faster. Currently it is an useless dep
so let's disable it by default.

build.sh

@@ -57,7 +57,7 @@ for ARG in "$@"; do
             echo "** Developer option **"
             echo "--wx28          : Force wxWidget 2.8"
             echo "--glsl          : Replace CG backend of ZZogl by GLSL"
-            echo "--egl           : Replace GLX by EGL (ZZogl plugins only)"
+            echo "--egl           : Replace GLX by EGL (ZZogl/GSdx plugins)"
             echo "--sdl2          : Build with SDL2 (crashes if wx is linked to SDL1.2)"
             echo "--cross-multilib: Build a 32bit PCSX2 on a 64bit machine using multilib."
             echo

cmake/SelectPcsx2Plugins.cmake

@@ -144,7 +144,7 @@ endif()
 # requires: -OpenGL
 #			-X11
 #---------------------------------------
-if(OPENGL_FOUND AND X11_FOUND AND EGL_FOUND AND GTKn_FOUND)
+if(OPENGL_FOUND AND X11_FOUND AND GTKn_FOUND AND (EGL_FOUND OR NOT EGL_API))
     set(GSdx TRUE)
 elseif(NOT EXISTS "${CMAKE_SOURCE_DIR}/plugins/GSdx")
 	set(GSdx FALSE)

debian-packager/control

@@ -8,7 +8,6 @@ Build-Depends: cmake (>= 2.8.5),
     libaio-dev,
     libasound2-dev,
     libbz2-dev,
-    libegl1-mesa-dev,
     libgl1-mesa-dev,
     libglew-dev,
     libglu1-mesa-dev,

plugins/GSdx/CMakeLists.txt

@@ -18,9 +18,7 @@ set(CommonFlags
     -Wunused-variable # __dummy variable need to be investigated
     )
 
-set(OptimizationFlags
-    -O2
-    )
+set(OptimizationFlags -O2)
 
 
 if(CMAKE_BUILD_TYPE STREQUAL Debug)
@@ -42,6 +40,10 @@ if(PNGPP_FOUND)
     set(GSdxFinalFlags ${GSdxFinalFlags} -DPNGPP_SUPPORTED)
 endif()
 
+if(EGL_API AND EGL_FOUND)
+    set(GSdxFinalFlags ${GSdxFinalFlags} -DEGL_SUPPORTED)
+endif()
+
 #Clang doesn't support a few common flags that GCC does.
 if(NOT USE_CLANG)
     set(GSdxFinalFlags ${GSdxFinalFlags} -fabi-version=6)
@@ -201,11 +203,16 @@ set(GSdxFinalLibs
 
 set(GSdxFinalLibs ${GSdxFinalLibs}
 	${OPENGL_LIBRARIES}
-    ${EGL_LIBRARIES}
     ${GTK2_LIBRARIES}
     ${LIBC_LIBRARIES}
 )
 
+if(EGL_API AND EGL_FOUND)
+    set(GSdxFinalLibs ${GSdxFinalLibs}
+        ${EGL_LIBRARIES}
+        )
+endif()
+
 if(PNGPP_FOUND)
 	set(GSdxFinalLibs ${GSdxFinalLibs}
 		"-lpng")

plugins/GSdx/GS.cpp

@@ -292,7 +292,11 @@ static int _GSopen(void** dsp, char* title, int renderer, int threads = -1)
 			}
 #else
 			wnd[0] = new GSWndOGL();
+#ifdef EGL_SUPPORTED
 			wnd[1] = new GSWndEGL();
+#else
+			wnd[1] = NULL;
+#endif
 #endif
 		}
 	}

plugins/GSdx/GSWndEGL.cpp

@@ -22,7 +22,7 @@
 #include "stdafx.h"
 #include "GSWndEGL.h"
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(EGL_SUPPORTED)
 
 GSWndEGL::GSWndEGL()
 	: m_NativeWindow(0), m_NativeDisplay(NULL)

plugins/GSdx/GSWndEGL.h

@@ -21,30 +21,11 @@
 
 #include "GSWnd.h"
 
-#if defined(__linux__)
+#if defined(__linux__) && defined(EGL_SUPPORTED)
 #include <X11/Xlib.h>
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
-// Need at least MESA 9.0 (plan for october/november 2012)
-// So force the destiny to at least check the compilation
-#ifndef EGL_KHR_create_context
-#define EGL_KHR_create_context 1
-#define EGL_CONTEXT_MAJOR_VERSION_KHR			    EGL_CONTEXT_CLIENT_VERSION
-#define EGL_CONTEXT_MINOR_VERSION_KHR			    0x30FB
-#define EGL_CONTEXT_FLAGS_KHR				    0x30FC
-#define EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR		    0x30FD
-#define EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR  0x31BD
-#define EGL_NO_RESET_NOTIFICATION_KHR			    0x31BE
-#define EGL_LOSE_CONTEXT_ON_RESET_KHR			    0x31BF
-#define EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR		    0x00000001
-#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR	    0x00000002
-#define EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR	    0x00000004
-#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR		    0x00000001
-#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR    0x00000002
-#endif
-
-
 class GSWndEGL : public GSWndGL
 {
 	EGLNativeWindowType    m_NativeWindow;