Fixes to support building with GCC

CMakeLists.txt

@@ -1,6 +1,11 @@
 cmake_minimum_required(VERSION 3.12)
 set(MACOSX_DEPLOYMENT_TARGET 10.10)
 
+# Use release build type as default (assimp complains if this is unset)
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release)
+endif()
+
 project(PrimeWorldEditor CXX)
 
 include(./dew.cmake)
@@ -10,7 +15,11 @@ include(cmake/generate_product_version.cmake)
 
 if(MSVC)
     add_compile_options(/WX /wd4267 /wd4100 /wd4101 /wd4189)
-elseif(APPLE)
+else()
+    add_compile_options(-Wno-multichar)
+endif()
+
+if(APPLE)
     add_compile_definitions(GL_SILENCE_DEPRECATION)
 endif()
 

src/Editor/CProgressDialog.h

@@ -73,12 +73,12 @@ public:
         InternalWaitForResults(Future);
         return Future.result();
     }
+};
 
 template<>
-    void WaitForResults(QFuture<void> Future)
+inline void CProgressDialog::WaitForResults(QFuture<void> Future)
 {
     InternalWaitForResults(Future);
 }
-};
 
 #endif // CPROGRESSDIALOG_H