Update the minimum C++ standard to C++14

BREAKING-CHANGES.txt

@@ -4,6 +4,26 @@ JUCE breaking changes
 Develop
 =======
 
+Change
+------
+The minimum supported C++ standard is now C++14 and the oldest supported
+compilers on macOS and Linux are now Xcode 9.2, GCC 5.0 and Clang 3.4.
+
+Possible Issues
+---------------
+Older compilers will no longer be able to compile JUCE. People using Xcode 8.5
+on OS X 10.11 will need to update the operating system to OS X 10.12 to be able
+to use Xcode 9.2.
+
+Workaround
+----------
+No workaround is available.
+
+Rationale
+---------
+This compiler upgrade will allow the use of C++14 within the framework.
+
+
 Change
 ------
 Platform GL headers are no longer included in juce_opengl.h

README.md

@@ -58,9 +58,9 @@ of the target you wish to build.
 
 #### Building JUCE Projects
 
-- __macOS/iOS__: macOS 10.11 and Xcode 7.3.1
+- __macOS/iOS__: Xcode 9.2 (macOS 10.12.6)
 - __Windows__: Windows 8.1 and Visual Studio 2015 Update 3 64-bit
-- __Linux__: GCC 4.8 (for a full list of dependencies, see
+- __Linux__: g++ 5.0 or Clang 3.4 (for a full list of dependencies, see
 [here](/docs/Linux%20Dependencies.md)).
 - __Android__: Android Studio on Windows, macOS or Linux
 

extras/Build/CMake/JUCECheckAtomic.cmake

@@ -51,7 +51,7 @@ function(_juce_create_atomic_target target_name)
 
     try_compile(compile_result "${test_bindir}" "${test_file_name}"
         OUTPUT_VARIABLE test_build_output_0
-        CXX_STANDARD 11
+        CXX_STANDARD 14
         CXX_STANDARD_REQUIRED TRUE
         CXX_EXTENSIONS FALSE)
 
@@ -59,7 +59,7 @@ function(_juce_create_atomic_target target_name)
         try_compile(compile_result "${test_bindir}" "${test_file_name}"
             OUTPUT_VARIABLE test_build_output_1
             LINK_LIBRARIES atomic
-            CXX_STANDARD 11
+            CXX_STANDARD 14
             CXX_STANDARD_REQUIRED TRUE
             CXX_EXTENSIONS FALSE)
 

extras/Build/CMake/JUCEUtils.cmake

@@ -501,7 +501,7 @@ function(_juce_add_plugin_wrapper_target format path out_path)
     _juce_add_plugin_definitions("${target_name}" INTERFACE ${format})
     _juce_add_standard_defs("${target_name}")
 
-    target_compile_features("${target_name}" INTERFACE cxx_std_11)
+    target_compile_features("${target_name}" INTERFACE cxx_std_14)
     add_library("juce::${target_name}" ALIAS "${target_name}")
 
     if(format STREQUAL "AUv3")
@@ -922,7 +922,7 @@ function(juce_add_binary_data target)
 
     target_sources(${target} PRIVATE "${binary_file_names}")
     target_include_directories(${target} INTERFACE ${juce_binary_data_folder})
-    target_compile_features(${target} PRIVATE cxx_std_11)
+    target_compile_features(${target} PRIVATE cxx_std_14)
 
     # This fixes an issue where Xcode is unable to find binary data during archive.
     if(CMAKE_GENERATOR STREQUAL "Xcode")

extras/Projucer/Builds/LinuxMakefile/Makefile

@@ -40,7 +40,7 @@ ifeq ($(CONFIG),Debug)
   JUCE_TARGET_APP := Projucer
 
   JUCE_CFLAGS += $(JUCE_CPPFLAGS) $(TARGET_ARCH) -g -ggdb -O0 $(CFLAGS)
-  JUCE_CXXFLAGS += $(JUCE_CFLAGS) -std=c++11 $(CXXFLAGS)
+  JUCE_CXXFLAGS += $(JUCE_CFLAGS) -std=c++14 $(CXXFLAGS)
   JUCE_LDFLAGS += $(TARGET_ARCH) -L$(JUCE_BINDIR) -L$(JUCE_LIBDIR) $(shell pkg-config --libs freetype2) -fvisibility=hidden -lrt -ldl -lpthread $(LDFLAGS)
 
   CLEANCMD = rm -rf $(JUCE_OUTDIR)/$(TARGET) $(JUCE_OBJDIR)
@@ -61,7 +61,7 @@ ifeq ($(CONFIG),Release)
   JUCE_TARGET_APP := Projucer
 
   JUCE_CFLAGS += $(JUCE_CPPFLAGS) $(TARGET_ARCH) -O3 $(CFLAGS)
-  JUCE_CXXFLAGS += $(JUCE_CFLAGS) -std=c++11 $(CXXFLAGS)
+  JUCE_CXXFLAGS += $(JUCE_CFLAGS) -std=c++14 $(CXXFLAGS)
   JUCE_LDFLAGS += $(TARGET_ARCH) -L$(JUCE_BINDIR) -L$(JUCE_LIBDIR) $(shell pkg-config --libs freetype2) -fvisibility=hidden -lrt -ldl -lpthread $(LDFLAGS)
 
   CLEANCMD = rm -rf $(JUCE_OUTDIR)/$(TARGET) $(JUCE_OBJDIR)

extras/Projucer/Builds/MacOSX/Projucer.xcodeproj/project.pbxproj

@@ -1118,7 +1118,7 @@
 		0BC15DC2E5FE5ECFFB398D49 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "c++11";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_LINK_OBJC_RUNTIME = NO;
 				CODE_SIGN_IDENTITY = "";
@@ -1171,7 +1171,7 @@
 				INFOPLIST_FILE = Info-App.plist;
 				INFOPLIST_PREPROCESS = NO;
 				INSTALL_PATH = "$(HOME)/Applications";
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				MTL_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../JuceLibraryCode $(SRCROOT)/../../../Build $(SRCROOT)/../../../../modules";
 				OTHER_CPLUSPLUSFLAGS = "-Wall -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion -Wunused-private-field -Wbool-conversion -Wextra-semi -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wnullable-to-nonnull-conversion -Wno-missing-field-initializers -Wno-ignored-qualifiers -Wswitch-enum";
 				PRODUCT_BUNDLE_IDENTIFIER = com.juce.theprojucer;
@@ -1185,7 +1185,7 @@
 		0CC6C439D038EDA0D7F10DF0 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "c++11";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++14";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_LINK_OBJC_RUNTIME = NO;
 				CODE_SIGN_IDENTITY = "";
@@ -1238,7 +1238,7 @@
 				INFOPLIST_FILE = Info-App.plist;
 				INFOPLIST_PREPROCESS = NO;
 				INSTALL_PATH = "$(HOME)/Applications";
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				MTL_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../JuceLibraryCode $(SRCROOT)/../../../Build $(SRCROOT)/../../../../modules";
 				OTHER_CPLUSPLUSFLAGS = "-Wall -Wshadow-all -Wshorten-64-to-32 -Wstrict-aliasing -Wuninitialized -Wunused-parameter -Wconversion -Wsign-compare -Wint-conversion -Wconditional-uninitialized -Woverloaded-virtual -Wreorder -Wconstant-conversion -Wsign-conversion -Wunused-private-field -Wbool-conversion -Wextra-semi -Wunreachable-code -Wzero-as-null-pointer-constant -Wcast-align -Winconsistent-missing-destructor-override -Wshift-sign-overflow -Wnullable-to-nonnull-conversion -Wno-missing-field-initializers -Wno-ignored-qualifiers -Wswitch-enum";
 				PRODUCT_BUNDLE_IDENTIFIER = com.juce.theprojucer;

extras/Projucer/Projucer.jucer

@@ -3,8 +3,8 @@
 <JUCERPROJECT id="M70qfTRRk" name="Projucer" projectType="guiapp" juceFolder="../../juce"
               version="6.0.8" bundleIdentifier="com.juce.theprojucer" splashScreenColour="Dark"
               displaySplashScreen="0" reportAppUsage="0" companyName="Raw Material Software Limited"
-              companyCopyright="Raw Material Software Limited" cppLanguageStandard="11"
+              companyCopyright="Raw Material Software Limited" useAppConfig="0"
-              useAppConfig="0" addUsingNamespaceToJuceHeader="1" jucerFormatVersion="1">
+              addUsingNamespaceToJuceHeader="1" jucerFormatVersion="1">
   <EXPORTFORMATS>
     <XCODE_MAC targetFolder="Builds/MacOSX" vstFolder="~/SDKs/vstsdk2.4" rtasFolder="~/SDKs/PT_80_SDK"
                documentExtensions=".jucer" objCExtraSuffix="zkVtji" bigIcon="Zrx1Gl"
@@ -13,9 +13,9 @@
                applicationCategory="public.app-category.developer-tools">
       <CONFIGURATIONS>
         <CONFIGURATION name="Debug" isDebug="1" targetName="Projucer" cppLibType="libc++"
-                       recommendedWarnings="LLVM"/>
+                       recommendedWarnings="LLVM" macOSDeploymentTarget="10.12"/>
         <CONFIGURATION name="Release" isDebug="0" targetName="Projucer" cppLibType="libc++"
-                       linkTimeOptimisation="0" recommendedWarnings="LLVM"/>
+                       linkTimeOptimisation="0" recommendedWarnings="LLVM" macOSDeploymentTarget="10.12"/>
       </CONFIGURATIONS>
       <MODULEPATHS>
         <MODULEPATH id="juce_gui_extra" path="../../modules"/>

extras/Projucer/Source/Project/jucer_Project.cpp

@@ -214,7 +214,7 @@ bool Project::setCppVersionFromOldExporterSettings()
         }
     }
 
-    if (highestLanguageStandard != -1 && highestLanguageStandard >= 11)
+    if (highestLanguageStandard >= 14)
     {
         cppStandardValue = highestLanguageStandard;
         return true;
@@ -225,6 +225,9 @@ bool Project::setCppVersionFromOldExporterSettings()
 
 void Project::updateDeprecatedProjectSettings()
 {
+    if (cppStandardValue.get().toString() == "11")
+        cppStandardValue.resetToDefault();
+
     for (ExporterIterator exporter (*this); exporter.next();)
         exporter->updateDeprecatedSettings();
 }

extras/Projucer/Source/Project/jucer_Project.h

@@ -205,8 +205,8 @@ public:
     bool shouldDisplaySplashScreen() const               { return displaySplashScreenValue.get(); }
     String getSplashScreenColourString() const           { return splashScreenColourValue.get(); }
 
-    static StringArray getCppStandardStrings()           { return { "C++11", "C++14", "C++17", "Use Latest" }; }
+    static StringArray getCppStandardStrings()           { return { "C++14", "C++17", "Use Latest" }; }
-    static Array<var> getCppStandardVars()               { return { "11",    "14",    "17",    "latest" }; }
+    static Array<var> getCppStandardVars()               { return { "14",    "17",    "latest" }; }
 
     String getCppStandardString() const                  { return cppStandardValue.get(); }
 

extras/Projucer/Source/ProjectSaving/jucer_ProjectExport_MSVC.h

@@ -576,10 +576,6 @@ public:
                         cl->createNewChildElement ("TreatWarningAsError")->addTextElement ("true");
 
                     auto cppStandard = owner.project.getCppStandardString();
-
-                    if (cppStandard == "11") // VS doesn't support the C++11 flag so we have to bump it to C++14
-                        cppStandard = "14";
-
                     cl->createNewChildElement ("LanguageStandard")->addTextElement ("stdcpp" + cppStandard);
                 }
 

modules/juce_analytics/juce_analytics.h

@@ -40,6 +40,7 @@
   description:        Classes to collect analytics and send to destinations
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_gui_basics
 

modules/juce_audio_basics/juce_audio_basics.h

@@ -37,6 +37,7 @@
   description:        Classes for audio buffer manipulation, midi message handling, synthesis, etc.
   website:            http://www.juce.com/juce
   license:            ISC
+  minimumCppStandard: 14
 
   dependencies:       juce_core
   OSXFrameworks:      Accelerate

modules/juce_audio_devices/juce_audio_devices.h

@@ -37,6 +37,7 @@
   description:        Classes to play and record from audio and MIDI I/O devices
   website:            http://www.juce.com/juce
   license:            ISC
+  minimumCppStandard: 14
 
   dependencies:       juce_audio_basics, juce_events
   OSXFrameworks:      CoreAudio CoreMIDI AudioToolbox

modules/juce_audio_formats/juce_audio_formats.h

@@ -40,6 +40,7 @@
   description:        Classes for reading and writing various audio file formats.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_audio_basics
   OSXFrameworks:      CoreAudio CoreMIDI QuartzCore AudioToolbox

modules/juce_audio_plugin_client/juce_audio_plugin_client.h

@@ -40,6 +40,7 @@
   description:        Classes for building VST, VST3, AudioUnit, AAX and RTAS plugins.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_audio_processors
 

modules/juce_audio_processors/juce_audio_processors.h

@@ -40,6 +40,7 @@
   description:        Classes for loading and playing VST, AU, LADSPA, or internally-generated audio processors.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_gui_extra, juce_audio_basics
   OSXFrameworks:      CoreAudio CoreMIDI AudioToolbox

modules/juce_audio_utils/juce_audio_utils.h

@@ -40,6 +40,7 @@
   description:        Classes for audio-related GUI and miscellaneous tasks.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_audio_processors, juce_audio_formats, juce_audio_devices
   OSXFrameworks:      CoreAudioKit DiscRecording

modules/juce_box2d/juce_box2d.h

@@ -40,6 +40,7 @@
   description:        The Box2D physics engine and some utility classes.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_graphics
 

modules/juce_core/juce_core.h

@@ -37,6 +37,7 @@
   description:        The essential set of basic JUCE classes, as required by all the other JUCE modules. Includes text, container, memory, threading and i/o functionality.
   website:            http://www.juce.com/juce
   license:            ISC
+  minimumCppStandard: 14
 
   dependencies:
   OSXFrameworks:      Cocoa Foundation IOKit

modules/juce_core/memory/juce_AllocationHooks.cpp

@@ -65,8 +65,6 @@ void operator delete[] (void* p) noexcept
     std::free (p);
 }
 
-#if JUCE_CXX14_IS_AVAILABLE
-
 void operator delete (void* p, size_t) noexcept
 {
     juce::notifyAllocationHooksForThread();
@@ -79,8 +77,6 @@ void operator delete[] (void* p, size_t) noexcept
     std::free (p);
 }
 
-#endif
-
 namespace juce
 {
 

modules/juce_core/system/juce_CompilerSupport.h

@@ -30,12 +30,8 @@
 // GCC
 #if JUCE_GCC
 
- #if (__GNUC__ * 100 + __GNUC_MINOR__) < 407
+ #if (__GNUC__ * 100 + __GNUC_MINOR__) < 500
-  #error "JUCE requires GCC 4.7 or later"
+  #error "JUCE requires GCC 5.0 or later"
- #endif
-
- #if ! (__cplusplus >= 201103L || defined (__GXX_EXPERIMENTAL_CXX0X__))
-  #error "JUCE requires that GCC has C++11 compatibility enabled"
  #endif
 
  #ifndef JUCE_EXCEPTIONS_DISABLED
@@ -44,7 +40,7 @@
   #endif
  #endif
 
- #define JUCE_CXX14_IS_AVAILABLE ((__cplusplus >= 201402L) || ((__GNUC__ * 100 + __GNUC_MINOR__) >= 409 && (__cplusplus >= 201300L)))
+ #define JUCE_CXX14_IS_AVAILABLE (__cplusplus >= 201402L)
  #define JUCE_CXX17_IS_AVAILABLE (__cplusplus >= 201703L)
 
 #endif
@@ -53,8 +49,8 @@
 // Clang
 #if JUCE_CLANG
 
- #if (__clang_major__ < 3) || (__clang_major__ == 3 && __clang_minor__ < 3)
+ #if (__clang_major__ < 3) || (__clang_major__ == 3 && __clang_minor__ < 4)
-  #error "JUCE requires Clang 3.3 or later"
+  #error "JUCE requires Clang 3.4 or later"
  #endif
 
  #ifndef JUCE_COMPILER_SUPPORTS_ARC
@@ -95,21 +91,8 @@
 #endif
 
 //==============================================================================
-// C++ library
+#if ! JUCE_CXX14_IS_AVAILABLE
-#if (defined (__GLIBCXX__) && __GLIBCXX__ < 20130322) || (defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION < 3700))
+ #error "JUCE requires C++14 or later"
- #error "JUCE requires a C++ library containing std::atomic"
-#endif
-
-//==============================================================================
-#if (! JUCE_MSVC) && (! JUCE_CXX14_IS_AVAILABLE)
-namespace std
-{
-    template <typename T, typename... Args>
-    unique_ptr<T> make_unique (Args&&... args)
-    {
-        return unique_ptr<T> (new T (std::forward<Args> (args)...));
-    }
-}
 #endif
 
 //==============================================================================

modules/juce_cryptography/juce_cryptography.h

@@ -40,6 +40,7 @@
   description:        Classes for various basic cryptography functions, including RSA, Blowfish, MD5, SHA, etc.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_core
 

modules/juce_data_structures/juce_data_structures.h

@@ -40,6 +40,7 @@
   description:        Classes for undo/redo management, and smart data structures.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_events
 

modules/juce_events/juce_events.h

@@ -37,6 +37,7 @@
   description:        Classes for running an application's main event loop and sending/receiving messages, timers, etc.
   website:            http://www.juce.com/juce
   license:            ISC
+  minimumCppStandard: 14
 
   dependencies:       juce_core
 

modules/juce_graphics/juce_graphics.h

@@ -40,6 +40,7 @@
   description:        Classes for 2D vector graphics, image loading/saving, font handling, etc.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_events
   OSXFrameworks:      Cocoa QuartzCore

modules/juce_gui_basics/juce_gui_basics.h

@@ -40,6 +40,7 @@
   description:        Basic user-interface components and related classes.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_graphics juce_data_structures
   OSXFrameworks:      Cocoa Carbon QuartzCore

modules/juce_gui_extra/juce_gui_extra.cpp

@@ -110,17 +110,15 @@
 
 //==============================================================================
 #elif (JUCE_LINUX || JUCE_BSD) && JUCE_WEB_BROWSER
- JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wzero-as-null-pointer-constant", "-Wparentheses")
+ JUCE_BEGIN_IGNORE_WARNINGS_GCC_LIKE ("-Wzero-as-null-pointer-constant", "-Wparentheses", "-Wdeprecated-declarations")
 
  // If you're missing this header, you need to install the webkit2gtk-4.0 package
  #include <gtk/gtk.h>
-
- JUCE_END_IGNORE_WARNINGS_GCC_LIKE
-
- // If you're missing these headers, you need to install the webkit2gtk-4.0 package
  #include <gtk/gtkx.h>
  #include <glib-unix.h>
  #include <webkit2/webkit2.h>
+
+ JUCE_END_IGNORE_WARNINGS_GCC_LIKE
 #endif
 
 //==============================================================================

modules/juce_gui_extra/juce_gui_extra.h

@@ -40,6 +40,7 @@
   description:        Miscellaneous GUI classes for specialised tasks.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_gui_basics
   OSXFrameworks:      WebKit

modules/juce_opengl/juce_opengl.h

@@ -40,6 +40,7 @@
   description:        Classes for rendering OpenGL in a JUCE window.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_gui_extra
   OSXFrameworks:      OpenGL

modules/juce_osc/juce_osc.h

@@ -40,6 +40,7 @@
   description:        Open Sound Control implementation.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_events
 

modules/juce_product_unlocking/juce_product_unlocking.h

@@ -40,6 +40,7 @@
   description:        Classes for online product authentication
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_cryptography
 

modules/juce_video/juce_video.h

@@ -40,6 +40,7 @@
   description:        Classes for playing video and capturing camera input.
   website:            http://www.juce.com/juce
   license:            GPL/Commercial
+  minimumCppStandard: 14
 
   dependencies:       juce_gui_extra
   OSXFrameworks:      AVKit AVFoundation CoreMedia