JUCE's min spec is C++17.

Author: jrlanglois

modules/squarepine_core/behaviours/Lockable.h

@@ -51,13 +51,8 @@ class LockableBase<std::recursive_mutex>
     /** The type of lock to use for locking. */
     using Lock = std::recursive_mutex;
 
-   #if JUCE_CXX17_IS_AVAILABLE
     /** The type of lock to use for automatically locking and unlocking using RAII. */
     using ScopedLock = std::scoped_lock<Lock>;
-   #else
-    /** The type of lock to use for automatically locking and unlocking using RAII. */
-    using ScopedLock = std::lock_guard<Lock>;
-   #endif
 
     /** @returns the Lock that locks this lockable.
 

modules/squarepine_core/valuetree/ValueTreeHelpers.h

@@ -15,11 +15,9 @@
 #define CREATE_INLINE_IDENTIFIER(name) \
     static const Identifier name##Id (JUCE_STRINGIFY (name));
 
-#if DOXYGEN || JUCE_CXX17_IS_AVAILABLE
-    /** */
-    #define CREATE_INLINE_CLASS_IDENTIFIER(name) \
-        inline static const Identifier name##Id = JUCE_STRINGIFY (name);
-#endif
+/** */
+#define CREATE_INLINE_CLASS_IDENTIFIER(name) \
+    inline static const Identifier name##Id = JUCE_STRINGIFY (name);
 
 //==============================================================================
 /** Appends a child tree to the parent tree, and returns the child.