Fix build with old compilers

Signed-off-by: falkTX <falktx@falktx.com>

Makefile.plugins.mk

@@ -75,8 +75,10 @@ ifeq ($(LINUX),true)
 VST3_FILENAME = $(TARGET_PROCESSOR)-linux/$(NAME).so
 endif
 ifeq ($(MACOS),true)
+ifneq ($(MACOS_OLD),true)
 VST3_FILENAME = MacOS/$(NAME)
 endif
+endif
 ifeq ($(WINDOWS),true)
 VST3_FILENAME = $(TARGET_PROCESSOR)-win/$(NAME).vst3
 endif

dgl/Widget.hpp

@@ -150,7 +150,11 @@ public:
             : BaseEvent(),
               keycode(0),
               character(0),
+#ifdef DISTRHO_PROPER_CPP11_SUPPORT
               string{'\0','\0','\0','\0','\0','\0','\0','\0'} {}
+#else
+              string() { std::memset(string, 0, sizeof(string)); }
+#endif
     };
 
    /**

dgl/src/pugl.hpp

@@ -20,9 +20,14 @@
 #include "../Base.hpp"
 
 /* we will include all header files used in pugl in their C++ friendly form, then pugl stuff in custom namespace */
-#include <cstdbool>
 #include <cstddef>
-#include <cstdint>
+#ifdef DISTRHO_PROPER_CPP11_SUPPORT
+# include <cstdbool>
+# include <cstdint>
+#else
+# include <stdbool.h>
+# include <stdint.h>
+#endif
 
 #define PUGL_API
 #define PUGL_DISABLE_DEPRECATED

distrho/DistrhoUtils.hpp

@@ -38,7 +38,7 @@
 typedef SSIZE_T ssize_t;
 #endif
 
-#if defined(DISTRHO_OS_MAC) && ! defined(CARLA_OS_MAC) && ! defined(DISTRHO_PROPER_CPP11_SUPPORT)
+#if ! defined(CARLA_MATH_UTILS_HPP_INCLUDED) && ! defined(DISTRHO_PROPER_CPP11_SUPPORT)
 namespace std {
 inline float fmin(float __x, float __y)
   { return __builtin_fminf(__x, __y); }

distrho/src/DistrhoDefines.h

@@ -64,6 +64,7 @@
 #endif
 
 #ifndef DISTRHO_PROPER_CPP11_SUPPORT
+# define constexpr
 # define noexcept throw()
 # define override
 # define final

distrho/src/DistrhoPluginVST2.cpp

@@ -132,7 +132,7 @@ struct ParameterAndNotesHelper
 # endif
 #endif
     {
-#ifndef DISTRHO_PROPER_CPP11_SUPPORT
+#if DISTRHO_PLUGIN_HAS_UI && DISTRHO_PLUGIN_WANT_MIDI_INPUT && ! defined(DISTRHO_PROPER_CPP11_SUPPORT)
         std::memset(&notesRingBuffer, 0, sizeof(notesRingBuffer));
 #endif
     }

distrho/src/jackbridge/JackBridge.cpp

@@ -36,9 +36,11 @@
 #include "../../extra/LibraryUtils.hpp"
 
 // in case JACK fails, we fallback to RtAudio's native API
-#include "RtAudioBridge.hpp"
-#ifdef RTAUDIO_API_TYPE
-# include "rtaudio/RtAudio.cpp"
+#ifdef DISTRHO_PROPER_CPP11_SUPPORT
+# include "RtAudioBridge.hpp"
+# ifdef RTAUDIO_API_TYPE
+#  include "rtaudio/RtAudio.cpp"
+# endif
 #endif
 
 // -----------------------------------------------------------------------------

examples/FileHandling/NanoButton.cpp

@@ -36,15 +36,15 @@ Button::Button(Widget *parent, Callback *cb)
 
 void Button::onNanoDisplay()
 {
-    auto w = getWidth();
-    auto h = getHeight();
-    auto margin = 1.0f;
+    const uint w = getWidth();
+    const uint h = getHeight();
+    const float margin = 1.0f;
 
     // Background
     beginPath();
     fillColor(backgroundColor);
     strokeColor(borderColor);
-    rect(margin, margin, w - 2 * margin, h-2*margin);
+    rect(margin, margin, w - 2 * margin, h - 2 * margin);
     fill();
     stroke();
     closePath();