focus on being just a connect extension again (use together with as2qcache)

AMBuildScript

@@ -148,7 +148,7 @@ class ExtensionConfig(object):
     cxx.cflags += [
       '-pipe',
       '-fno-strict-aliasing',
-#      '-Wall',
+      '-Wall',
 #      '-Werror',
       '-Wno-unused',
       '-Wno-switch',
@@ -158,7 +158,7 @@ class ExtensionConfig(object):
       '-fvisibility=hidden',
     ]
     cxx.cxxflags += [
-      '-std=c++11',
+      '-std=c++14',
       '-fno-exceptions',
       '-fno-threadsafe-statics',
       '-Wno-non-virtual-dtor',
@@ -246,6 +246,7 @@ class ExtensionConfig(object):
       cxx.linkflags += ['-static-libgcc']
     elif cxx.vendor == 'clang':
       cxx.linkflags += ['-lgcc_eh']
+    cxx.linkflags += ['-static-libstdc++']
 
   def configure_mac(self, cxx):
     cxx.defines += ['OSX', '_OSX', 'POSIX']