embedded help for httpd tool

httpd.cpp

@@ -14,9 +14,10 @@ int main(int argc, char** argv)
 {
     if (argc != 3)
     {
-        std::cerr << "Usage: httpd <port> <host>" << std::endl;
-        std::cerr << " ./a.out 9090 127.0.0.1" << std::endl;
-        std::cerr << " ./a.out 9090 0.0.0.0" << std::endl;
+        std::cerr << "Usage: " << argv[0]
+                  << " <port> <host>" << std::endl;
+        std::cerr << " " << argv[0] << " 9090 127.0.0.1" << std::endl;
+        std::cerr << " " << argv[0] << " 9090 0.0.0.0" << std::endl;
         return 1;
     }
 

makefile

@@ -189,7 +189,32 @@ httpd:
 		ixwebsocket/IXConnectionState.cpp \
 		ixwebsocket/IXUrlParser.cpp \
 		ixwebsocket/IXSelectInterrupt.cpp \
-		ixwebsocket/apple/IXSetThreadName_apple.cpp -lz
+		ixwebsocket/apple/IXSetThreadName_apple.cpp \
+		-lz
+
+httpd_linux:
+	g++ --std=c++11 -o ixhttpd httpd.cpp -Iixwebsocket \
+		ixwebsocket/IXSelectInterruptFactory.cpp \
+		ixwebsocket/IXCancellationRequest.cpp \
+		ixwebsocket/IXSocketTLSOptions.cpp \
+		ixwebsocket/IXUserAgent.cpp \
+		ixwebsocket/IXDNSLookup.cpp \
+		ixwebsocket/IXBench.cpp \
+		ixwebsocket/IXWebSocketHttpHeaders.cpp \
+		ixwebsocket/IXSelectInterruptPipe.cpp \
+		ixwebsocket/IXHttp.cpp \
+		ixwebsocket/IXSocketConnect.cpp \
+		ixwebsocket/IXSocket.cpp \
+		ixwebsocket/IXSocketServer.cpp \
+		ixwebsocket/IXNetSystem.cpp \
+		ixwebsocket/IXHttpServer.cpp \
+		ixwebsocket/IXSocketFactory.cpp \
+		ixwebsocket/IXConnectionState.cpp \
+		ixwebsocket/IXUrlParser.cpp \
+		ixwebsocket/IXSelectInterrupt.cpp \
+		ixwebsocket/linux/IXSetThreadName_linux.cpp \
+		-lz -lpthread
+	cp -f ixhttpd /usr/local/bin
 
 # For the fork that is configured with appveyor
 rebase_upstream: