Fix Linux build errors (#7)

CMakeLists.txt

@@ -44,7 +44,7 @@ target_include_directories(${output_lib} PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/.."
 set_target_properties(${output_lib} PROPERTIES CXX_VISIBILITY_PRESET hidden)
 set_target_properties(${output_lib} PROPERTIES C_VISIBILITY_PRESET hidden)
 set_target_properties(${output_lib} PROPERTIES C_STANDARD 99)
-set_target_properties(${output_lib} PROPERTIES CXX_STANDARD 11)
+set_target_properties(${output_lib} PROPERTIES CXX_STANDARD 14)
 set_target_properties(${output_lib} PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
 if (MSVC)

Journal/JournalStream.hh

@@ -362,7 +362,7 @@ template <typename T, ArgQ Q> struct ArgT
 {
   using Type = T;
 
-  constexpr ArgQ quality() { return Q; }
+  constexpr static ArgQ quality() { return Q; }
   typedef ArgT<T, Q> Self;
 
   T& vrbl;
@@ -374,9 +374,9 @@ template <typename T, ArgQ Q> struct ArgT
 
 template <typename T> auto argument(T& _vrbl, const char* const _name)
 {
-  using Arg =
+  using Arg = typename
       std::conditional<std::is_pointer<T>::value, ArgT<T, ArgQ::POINTER>,
-          std::conditional<std::is_reference<T>::value,
+          typename std::conditional<std::is_reference<T>::value,
               ArgT<T, ArgQ::REFERENCE>, ArgT<T, ArgQ::VALUE>>::type>::type;
   return Arg(_vrbl, _name);
 }
@@ -397,7 +397,7 @@ protected:
 
   ArgSetT(const Arg& _arg) : Arg(_arg) {}
 
-  template <typename ValueT> void assign(ValueT _val) { vrbl = _val; }
+  template <typename ValueT> void assign(ValueT _val) { Arg::vrbl = _val; }
 
   void init() { assign(nullptr); }
 
@@ -473,7 +473,7 @@ template <typename T, ArgQ Q> struct ArgLinkT : public ArgSetT<T, Q>
   ~ArgLinkT()
   {
     if (mode == LinkMode::AUTO)
-      make_link(link.name);
+      ArgSet::make_link(link.name);
   }
 };