fix premake build for linux, thanks to @consultit

See also issue #1538

examples/SharedMemory/premake4.lua

@@ -12,6 +12,9 @@ includedirs {".","../../src", "../ThirdPartyLibs"}
 links {
 	"BulletSoftBody", "Bullet3Common","BulletInverseDynamicsUtils", "BulletInverseDynamics",	"BulletDynamics","BulletCollision", "LinearMath", "BussIK"
 }
+if os.is("Linux") then
+    links{"dl"}
+end
 
 language "C++"
 

examples/SharedMemory/tcp/premake4.lua

@@ -73,6 +73,7 @@ links {
         end
         if os.is("Linux") then
                 defines {"_LINUX"}
+                links{"dl"}
         end
         if os.is("MacOSX") then
                 defines {"_DARWIN"}

examples/SharedMemory/udp/premake4.lua

@@ -14,6 +14,7 @@ project ("App_PhysicsServerSharedMemoryBridgeUDP")
 		links {"Ws2_32","Winmm"}
 	end
 	if os.is("Linux") then
+	    links{"dl"}
 	end
 	if os.is("MacOSX") then
 	end		
@@ -68,6 +69,9 @@ if os.is("Windows") then
 	defines { "WIN32" }
 	links {"Ws2_32","Winmm"}
 end
+	if os.is("Linux") then
+	    links{"dl"}
+	end
 
 language "C++"