Rules for build on x86-64 linux

src/desktop/desktop.pri

@@ -23,3 +23,4 @@ macx:SOURCES += src/desktop/UBWindowCapture_mac.mm
 
 linux-g++:SOURCES += src/desktop/UBWindowCapture_linux.cpp
 linux-g++-32:SOURCES += src/desktop/UBWindowCapture_linux.cpp
+linux-g++-64:SOURCES += src/desktop/UBWindowCapture_linux.cpp

src/frameworks/frameworks.pri

@@ -39,3 +39,7 @@ linux-g++-32 {
 
     SOURCES  += src/frameworks/UBPlatformUtils_linux.cpp
 }
+linux-g++-64 {
+
+    SOURCES  += src/frameworks/UBPlatformUtils_linux.cpp
+}

src/gui/gui.pri

@@ -119,3 +119,7 @@ linux-g++-32 {
 
     SOURCES  += src/gui/UBKeyboardPalette_linux.cpp
 }
+linux-g++-64 {
+
+    SOURCES  += src/gui/UBKeyboardPalette_linux.cpp
+}

src/pdf-merger/pdfMerger.pri

@@ -78,3 +78,8 @@ linux-g++-32 {
    LIBS += -lz
 
 }
+linux-g++-64 {
+
+   LIBS += -lz
+
+}