compile BGFX for RPI as well (nw)

scripts/genie.lua

@@ -1128,6 +1128,13 @@ configuration { "rpi" }
 	links {
  		"SDL2",
 		"fontconfig",
+		"X11",
+		"GLESv2",
+		"EGL",
+		"bcm_host",
+		"vcos",
+		"vchiq_arm",
+		"pthread",
 	}	
 
 configuration { "osx* or xcode4" }

scripts/src/3rdparty.lua

@@ -726,6 +726,14 @@ end
 			"-Wno-uninitialized",
 			"-Wno-unused-function",
 		}
+	configuration { "rpi" }
+		buildoptions {
+			"-Wno-unused-but-set-variable",
+			"-Wno-unused-variable",
+		}
+		defines {
+			"__STDC_VERSION__=199901L",
+		}
 
 	configuration { }
 

scripts/src/main.lua

@@ -103,6 +103,9 @@ end
 	configuration { "mingw*" or "vs*" }
 		targetextension ".exe"
 
+	configuration { "rpi" }
+		targetextension ""
+
 	configuration { "asmjs" }
 		targetextension ".bc"  
 		if os.getenv("EMSCRIPTEN") then

scripts/toolchain.lua

@@ -531,9 +531,9 @@ function toolchain(_buildDir, _subDir)
 			"$(RASPBERRY_SYSROOT)/opt/vc/include/interface/vcos/pthreads",
 			"$(RASPBERRY_SYSROOT)/opt/vc/include/interface/vmcs_host/linux",
 		}
-		links {
-			"rt",
-		}
+		defines {
+			"__VCCOREVER__=0x04000000", -- There is no special prefedined compiler symbol to detect RaspberryPi, faking it.
+		} 
 		linkoptions {
 			"-Wl,--gc-sections",
 		}

src/osd/modules/render/drawbgfx.cpp

@@ -84,7 +84,7 @@ static void* sdlNativeWindowHandle(SDL_Window* _window)
 		return nullptr;
 	}
 
-#   if BX_PLATFORM_LINUX || BX_PLATFORM_BSD
+#   if BX_PLATFORM_LINUX || BX_PLATFORM_BSD || BX_PLATFORM_RPI
 	return (void*)wmi.info.x11.window;
 #   elif BX_PLATFORM_OSX
 	return wmi.info.cocoa.window;