diff --git a/README.md b/README.md
index abef17ad..9992feda 100644
--- a/README.md
+++ b/README.md
@@ -74,8 +74,9 @@ sudo apt install libboost-dev libwxgtk3.0-gtk3-dev libhunspell-dev
 Then use cmake to build
 
 ````
-cmake build -DCMAKE_BUILD_TYPE=Release
-cmake --build build
+mkdir build && cd build
+cmake -DCMAKE_BUILD_TYPE=Release ..
+cmake --build .
 ````
 
 Use `CMAKE_BUILD_TYPE=Debug` for a debug build
diff --git a/src/gui/update_checker.cpp b/src/gui/update_checker.cpp
index a921d12c..3b1c2570 100644
--- a/src/gui/update_checker.cpp
+++ b/src/gui/update_checker.cpp
@@ -92,7 +92,9 @@ bool update_available()  {
 class CheckUpdateThread : public wxThread {
 public:
   void* Entry() override {
-    Work();
+    #ifndef __APPLE__
+        Work();
+    #endif
     return 0;
   }
   
diff --git a/src/util/io/get_member.cpp b/src/util/io/get_member.cpp
index eba0c8ad..e3a31fbc 100644
--- a/src/util/io/get_member.cpp
+++ b/src/util/io/get_member.cpp
@@ -27,6 +27,9 @@ template <> void GetDefaultMember::handle(const tribool&      v) { value = to_sc
 template <> void GetDefaultMember::handle(const Vector2D&     v) { value = to_script(String::Format(_("(%.10lf,%.10lf)"), v.x, v.y)); }
 template <> void GetDefaultMember::handle(const Color&        v) { value = to_script(v); }
 template <> void GetDefaultMember::handle(const wxDateTime&   v) { value = to_script(v); }
+#ifdef __APPLE__
+    template <> void GetDefaultMember::handle(const unsigned long& v) { value = to_script((int)v); }
+#endif
             void GetDefaultMember::handle(const ScriptValueP& v) { value = v; }
             void GetDefaultMember::handle(const ScriptP&      v) { value = v; }
 
diff --git a/src/util/io/reader.hpp b/src/util/io/reader.hpp
index d3058166..d3482254 100644
--- a/src/util/io/reader.hpp
+++ b/src/util/io/reader.hpp
@@ -10,6 +10,9 @@
 
 #include <util/prec.hpp>
 #include <util/version.hpp>
+#ifdef __APPLE__
+    #include <unordered_map>
+#endif
 
 template <typename T> class Defaultable;
 template <typename T> class Scriptable;
diff --git a/src/util/io/writer.hpp b/src/util/io/writer.hpp
index 5efb8130..7a223637 100644
--- a/src/util/io/writer.hpp
+++ b/src/util/io/writer.hpp
@@ -10,6 +10,9 @@
 
 #include <util/prec.hpp>
 #include <wx/txtstrm.h>
+#ifdef __APPLE__
+    #include <unordered_map>
+#endif
 
 template <typename T> class Defaultable;
 template <typename T> class Scriptable;
diff --git a/src/util/prec.hpp b/src/util/prec.hpp
index c142e350..dac98cbd 100644
--- a/src/util/prec.hpp
+++ b/src/util/prec.hpp
@@ -106,3 +106,13 @@ typedef unsigned int  UInt;
   #define assert(exp) (void)( (exp) || (msvc_assert(nullptr, _CRT_WIDE(#exp), _CRT_WIDE(__FILE__), __LINE__), 0) )
 #endif
 
+#ifdef __APPLE__
+  #if wxVERSION_NUMBER < 3100
+  // wx <= 3.1 doesn't include a hash implementation for wxString
+  template <> struct std::hash<wxString> {
+    size_t operator()(const wxString& k) const {
+      return hash<wstring>()(k.ToStdWstring());
+    }
+  };
+  #endif
+#endif