fixed pro for libptsocket

server/server.pro

@@ -8,7 +8,7 @@ QT       += core network
 
 QT       -= gui
 
-LIBS += -lptsocket -lwiringPi
+LIBS += -lptsocketqt$$QT_MAJOR_VERSION -lwiringPi
 
 TARGET = gpioanalyser-server
 CONFIG   += console

viewer/viewer.pro

@@ -11,7 +11,7 @@ greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 TARGET = viewer
 TEMPLATE = app
 
-LIBS += -lptsocket
+LIBS += -lptsocketqt$$QT_MAJOR_VERSION
 
 SOURCES += main.cpp\
         mainwindow.cpp
@@ -25,6 +25,6 @@ MOBILITY =
 
 contains(ANDROID_TARGET_ARCH,armeabi-v7a) {
     ANDROID_EXTRA_LIBS = \
-        $$PWD/../../../tools/Android/android-ndk-r10e/platforms/android-9/arch-arm/usr/lib/libptsocket.so
+        $$PWD/../../../tools/Android/android-ndk-r10e/platforms/android-9/arch-arm/usr/lib/libptsocketqt$${QT_MAJOR_VERSION}.so
 }