exit when env not found

appveyor.yml

@@ -25,6 +25,7 @@ environment:
       LIBEWF_HOME: "C:\\libewf_64bit"
       POSTGRESQL_HOME_64: "C:\\Program Files\\PostgreSQL\\9.5"
       PYTHON: "C:\\Python36-x64"
+      JDK_HOME: C:\Program Files\Java\jdk1.8.0
 services:
       - postgresql95;
 

setupLibs.py

@@ -39,17 +39,18 @@ def main():
         base_Library_path["libewf_64bit"] = os.path.dirname(libewf_home)
     else:
         print('Please set the env variable LIBEWF_HOME')
+        sys.exit(1)
 
     if(libvhdi_home != None):
         base_Library_path["libvhdi_64bit"] = os.path.dirname(libvhdi_home)
     else:
         print('Please set the env variable LIBVHDI_HOME')
-
+        sys.exit(1)
     if(libvmdk_home != None):
         base_Library_path["libvmdk_64bit"] = os.path.dirname(os.path.dirname(libvmdk_home))
     else:
         print('Please set the env variable LIBVMDK_HOME')
-
+        sys.exit(1)
 
     setupLibrary(base_Library_path);
 

win32/updateBuildLibs.py

@@ -213,6 +213,7 @@ def buildTSK(wPlatform, target):
 
     if not TSK_HOME:
         print("Please set the TSK_HOME environment variable")
+        sys.exit(1)
     else:
         os.chdir(os.path.join(os.getenv("TSK_HOME"),"win32"))