snap worked

GPService/CMakeLists.txt

@@ -26,7 +26,13 @@ add_3rdparty(
     SingleApplication
     GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication.git
     GIT_TAG v3.3.0
-    CMAKE_ARGS -DQAPPLICATION_CLASS=QCoreApplication
+    CMAKE_ARGS
+        -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+        -DCMAKE_FIND_ROOT_PATH=${CMAKE_FIND_ROOT_PATH}
+        -DCMAKE_PREFIX_PATH=$ENV{CMAKE_PREFIX_PATH}
+        -DCMAKE_INCLUDE_PATH=$ENV{CMAKE_INCLUDE_PATH}
+        -DCMAKE_LIBRARY_PATH=$ENV{CMAKE_LIBRARY_PATH}
+        -DQAPPLICATION_CLASS=QCoreApplication
 )
 
 ExternalProject_Get_Property(SingleApplication-${PROJECT_NAME} SOURCE_DIR BINARY_DIR)

GPService/main.cpp

@@ -1,6 +1,4 @@
-#include <iostream>
 #include <QtDBus/QtDBus>
-#include <QtCore/QProcessEnvironment>
 
 #include "gpservice.h"
 #include "singleapplication.h"
@@ -19,9 +17,6 @@ int main(int argc, char *argv[])
 
     GPService service;
 
-    QString env = "ENV: "  + QProcessEnvironment::systemEnvironment().toStringList().join("\n");
-    std::cout << env.toStdString();
-
     UnixSignalWatcher sigwatch;
     sigwatch.watchForSignal(SIGINT);
     sigwatch.watchForSignal(SIGTERM);