diff --git a/commondir.pri b/commondir.pri
index 7420bd9..d571d55 100755
--- a/commondir.pri
+++ b/commondir.pri
@@ -1,26 +1,27 @@
 # specifying common dirs
 
+DEFINES *= QHTTP_HAS_CLIENT
+# Qt5.5.1 on OSX needs both c++11 and c++14!! the c++14 is not enough
+CONFIG  += c++11 c++14
+
 unix {
     TEMPDIR         = $$PRJDIR/tmp/unix/$$TARGET
     macx:TEMPDIR    = $$PRJDIR/tmp/osx/$$TARGET
-    QMAKE_CFLAGS    += -std=gnu99
-    QMAKE_CXXFLAGS  += -std=c++11
 }
 
 win32 {
     warning("Windows port of this library has not been tested nor profiled.")
     TEMPDIR         = $$PRJDIR/tmp/win32/$$TARGET
-    CONFIG         += c++11
     DEFINES        += _WINDOWS WIN32_LEAN_AND_MEAN NOMINMAX
 }
 
 
-DESTDIR         = $$PRJDIR/xbin
-MOC_DIR         = $$TEMPDIR
-OBJECTS_DIR     = $$TEMPDIR
-RCC_DIR         = $$TEMPDIR
-UI_DIR          = $$TEMPDIR/Ui
-LIBS           += -L$$PRJDIR/xbin
+DESTDIR      = $$PRJDIR/xbin
+MOC_DIR      = $$TEMPDIR
+OBJECTS_DIR  = $$TEMPDIR
+RCC_DIR      = $$TEMPDIR
+UI_DIR       = $$TEMPDIR/Ui
+LIBS        += -L$$PRJDIR/xbin
 
-INCLUDEPATH     +=  . $$PRJDIR/src $$PRJDIR/3rdparty
+INCLUDEPATH +=  . $$PRJDIR/src $$PRJDIR/3rdparty
 
diff --git a/example/example.pro b/example/example.pro
index df9bc95..b87aedd 100644
--- a/example/example.pro
+++ b/example/example.pro
@@ -1,10 +1,10 @@
 TEMPLATE = subdirs
 
-SUBDIRS += helloworld
-SUBDIRS += basic-server
-SUBDIRS += benchmark
-SUBDIRS += nodejs
-
-unix:SUBDIRS += keep-alive
+# SUBDIRS += helloworld
+# SUBDIRS += basic-server
+# SUBDIRS += benchmark
+# SUBDIRS += nodejs
+#
+# unix:SUBDIRS += keep-alive
 
 
diff --git a/src/qhttpclient.hpp b/src/qhttpclient.hpp
index 38119fd..423b309 100644
--- a/src/qhttpclient.hpp
+++ b/src/qhttpclient.hpp
@@ -9,6 +9,9 @@
 #ifndef QHTTPCLIENT_HPP
 #define QHTTPCLIENT_HPP
 
+// configured by src.pro
+#if defined(QHTTP_HAS_CLIENT)
+
 ///////////////////////////////////////////////////////////////////////////////
 #include "qhttpfwd.hpp"
 
@@ -175,4 +178,5 @@ class QHTTP_API QHttpClient : public QObject
 } // namespace client
 } // namespace qhttp
 ///////////////////////////////////////////////////////////////////////////////
+#endif // QHTTP_HAS_CLIENT
 #endif // define QHTTPCLIENT_HPP
diff --git a/src/qhttpclientrequest.hpp b/src/qhttpclientrequest.hpp
index 6a87506..53edb9b 100644
--- a/src/qhttpclientrequest.hpp
+++ b/src/qhttpclientrequest.hpp
@@ -9,6 +9,9 @@
 #ifndef QHTTPCLIENT_REQUEST_HPP
 #define QHTTPCLIENT_REQUEST_HPP
 
+// configured by src.pro
+#if defined(QHTTP_HAS_CLIENT)
+
 ///////////////////////////////////////////////////////////////////////////////
 #include "qhttpabstracts.hpp"
 #include <QUrl>
@@ -60,4 +63,5 @@ class QHTTP_API QHttpRequest : public QHttpAbstractOutput
 } // namespace client
 } // namespace qhttp
 ///////////////////////////////////////////////////////////////////////////////
+#endif // QHTTP_HAS_CLIENT
 #endif // define QHTTPCLIENT_REQUEST_HPP
diff --git a/src/qhttpclientresponse.hpp b/src/qhttpclientresponse.hpp
index 37024f0..ddfdcb4 100644
--- a/src/qhttpclientresponse.hpp
+++ b/src/qhttpclientresponse.hpp
@@ -8,6 +8,10 @@
 
 #ifndef QHTTPCLIENT_RESPONSE_HPP
 #define QHTTPCLIENT_RESPONSE_HPP
+
+// configured by src.pro
+#if defined(QHTTP_HAS_CLIENT)
+
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "qhttpabstracts.hpp"
@@ -70,4 +74,5 @@ class QHTTP_API QHttpResponse : public QHttpAbstractInput
 } // namespace client
 } // namespace qhttp
 ///////////////////////////////////////////////////////////////////////////////
+#endif // QHTTP_HAS_CLIENT
 #endif // define QHTTPCLIENT_RESPONSE_HPP
diff --git a/src/src.pro b/src/src.pro
index ee2ff7a..ac9177c 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -3,24 +3,23 @@ QT       -= gui
 
 TARGET    = qhttp
 TEMPLATE  = lib
-CONFIG   += c++14
 
 PRJDIR    = ..
 include($$PRJDIR/commondir.pri)
 
-DEFINES  += QHTTP_MEMORY_LOG=0
-win32:DEFINES += QHTTP_EXPORT
+DEFINES       *= QHTTP_MEMORY_LOG=0
+win32:DEFINES *= QHTTP_EXPORT
 
+# Joyent http_parser
+SOURCES  += $$PRJDIR/3rdparty/http-parser/http_parser.c
+HEADERS  += $$PRJDIR/3rdparty/http-parser/http_parser.h
 
 SOURCES  += \
     qhttpabstracts.cpp \
     qhttpserverconnection.cpp \
     qhttpserverrequest.cpp \
     qhttpserverresponse.cpp \
-    qhttpserver.cpp \
-    qhttpclientrequest.cpp \
-    qhttpclientresponse.cpp \
-    qhttpclient.cpp
+    qhttpserver.cpp
 
 HEADERS  += \
     qhttpfwd.hpp \
@@ -28,19 +27,16 @@ HEADERS  += \
     qhttpserverconnection.hpp \
     qhttpserverrequest.hpp \
     qhttpserverresponse.hpp \
-    qhttpserver.hpp \
-    qhttpclient.hpp \
-    qhttpclientresponse.hpp \
-    qhttpclientrequest.hpp \
-    private/qhttpbase.hpp \
-    private/qhttpserverconnection_private.hpp \
-    private/qhttpserverrequest_private.hpp \
-    private/qhttpserverresponse_private.hpp \
-    private/qhttpserver_private.hpp \
-    private/qhttpclientrequest_private.hpp \
-    private/qhttpclientresponse_private.hpp \
-    private/qhttpclient_private.hpp
-
-SOURCES  += $$PRJDIR/3rdparty/http-parser/http_parser.c
-HEADERS  += $$PRJDIR/3rdparty/http-parser/http_parser.h
-
+    qhttpserver.hpp
+
+contains(DEFINES, QHTTP_HAS_CLIENT) {
+    SOURCES += \
+        qhttpclientrequest.cpp \
+        qhttpclientresponse.cpp \
+        qhttpclient.cpp
+
+    HEADERS += \
+        qhttpclient.hpp \
+        qhttpclientresponse.hpp \
+        qhttpclientrequest.hpp
+}