Index: Makefile
===================================================================
--- Makefile	(revision 11150)
+++ Makefile	(working copy)
@@ -54,7 +54,7 @@
 #  ONLY_TEST=0      Only build the test suite.
 #  STRICT=0         Treat warnings as errors.
 #  MODERN=0         Pass more modern compiler options.
-#  STDCXX=c++11     C++ standard version (only for GCC and clang)
+#  STDCXX=c++14     C++ standard version (only for GCC and clang)
 #  CHECKED=0        Enable run-time assertions.
 #  CHECKED_ADDRESS=0   Enable address sanitizer
 #  CHECKED_UNDEFINED=0 Enable undefined behaviour sanitizer
@@ -629,7 +629,7 @@
 endif
 
 CPPCHECK_FLAGS += -j $(NUMTHREADS)
-CPPCHECK_FLAGS += --std=c99 --std=c++11
+CPPCHECK_FLAGS += --std=c99 --std=c++14
 CPPCHECK_FLAGS += --quiet
 CPPCHECK_FLAGS += --enable=warning --inline-suppr --template='{file}:{line}: warning: {severity}: {message} [{id}]'
 CPPCHECK_FLAGS += --suppress=missingIncludeSystem
Index: build/autotools/configure.ac
===================================================================
--- build/autotools/configure.ac	(revision 11150)
+++ build/autotools/configure.ac	(working copy)
@@ -288,16 +288,11 @@
 AC_PROG_CC_STDC
 #AC_PROG_CC_C99
 
-# We need C++11 support
+# We need C++14 support
 AX_CXX_COMPILE_STDCXX(17, [noext], [optional])
 AS_IF([test "x$HAVE_CXX17" != "x1"],
  [
-  AX_CXX_COMPILE_STDCXX(14, [noext], [optional])
-  AS_IF([test "x$HAVE_CXX14" != "x1"],
-   [
-    AX_CXX_COMPILE_STDCXX(11, [noext], [mandatory])
-   ],[]
-  )
+  AX_CXX_COMPILE_STDCXX(14, [noext], [mandatory])
  ],[]
 )
 
Index: build/make/config-afl.mk
===================================================================
--- build/make/config-afl.mk	(revision 11150)
+++ build/make/config-afl.mk	(working copy)
@@ -12,13 +12,9 @@
 else
 ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++14 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++14' ; fi ), c++14)
 CXXFLAGS_STDCXX = -std=c++14
-else
-ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++11 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++11' ; fi ), c++11)
-CXXFLAGS_STDCXX = -std=c++11
 endif
 endif
 endif
-endif
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-clang.mk
===================================================================
--- build/make/config-clang.mk	(revision 11150)
+++ build/make/config-clang.mk	(working copy)
@@ -12,13 +12,9 @@
 else
 ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++14 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++14' ; fi ), c++14)
 CXXFLAGS_STDCXX = -std=c++14
-else
-ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++11 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++11' ; fi ), c++11)
-CXXFLAGS_STDCXX = -std=c++11
 endif
 endif
 endif
-endif
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-djgpp.mk
===================================================================
--- build/make/config-djgpp.mk	(revision 11150)
+++ build/make/config-djgpp.mk	(working copy)
@@ -6,7 +6,7 @@
 
 # Note that we are using GNU extensions instead of 100% standards-compliant
 # mode, because otherwise DJGPP-specific headers/functions are unavailable.
-CXXFLAGS_STDCXX = -std=gnu++11
+CXXFLAGS_STDCXX = -std=gnu++14
 CFLAGS_STDC = -std=gnu99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-emscripten.mk
===================================================================
--- build/make/config-emscripten.mk	(revision 11150)
+++ build/make/config-emscripten.mk	(working copy)
@@ -14,13 +14,9 @@
 else
 ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++14 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++14' ; fi ), c++14)
 CXXFLAGS_STDCXX = -std=c++14
-else
-ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++11 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++11' ; fi ), c++11)
-CXXFLAGS_STDCXX = -std=c++11
 endif
 endif
 endif
-endif
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-gcc.mk
===================================================================
--- build/make/config-gcc.mk	(revision 11150)
+++ build/make/config-gcc.mk	(working copy)
@@ -12,13 +12,9 @@
 else
 ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++14 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++14' ; fi ), c++14)
 CXXFLAGS_STDCXX = -std=c++14
-else
-ifeq ($(shell printf '\n' > bin/empty.cpp ; if $(CXX) -std=c++11 -c bin/empty.cpp -o bin/empty.out > /dev/null 2>&1 ; then echo 'c++11' ; fi ), c++11)
-CXXFLAGS_STDCXX = -std=c++11
 endif
 endif
 endif
-endif
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-generic.mk
===================================================================
--- build/make/config-generic.mk	(revision 11150)
+++ build/make/config-generic.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  ?= c++
 AR  = ar
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-mingw64-win32.mk
===================================================================
--- build/make/config-mingw64-win32.mk	(revision 11150)
+++ build/make/config-mingw64-win32.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  = i686-w64-mingw32-g++$(MINGW_FLAVOUR)
 AR  = i686-w64-mingw32-ar$(MINGW_FLAVOUR)
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-mingw64-win64.mk
===================================================================
--- build/make/config-mingw64-win64.mk	(revision 11150)
+++ build/make/config-mingw64-win64.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  = x86_64-w64-mingw32-g++$(MINGW_FLAVOUR)
 AR  = x86_64-w64-mingw32-ar$(MINGW_FLAVOUR)
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-mingw64-winrt-amd64.mk
===================================================================
--- build/make/config-mingw64-winrt-amd64.mk	(revision 11150)
+++ build/make/config-mingw64-winrt-amd64.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  = x86_64-w64-mingw32-g++$(MINGW_FLAVOUR)
 AR  = x86_64-w64-mingw32-ar$(MINGW_FLAVOUR)
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-mingw64-winrt-x86.mk
===================================================================
--- build/make/config-mingw64-winrt-x86.mk	(revision 11150)
+++ build/make/config-mingw64-winrt-x86.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  = i686-w64-mingw32-g++$(MINGW_FLAVOUR)
 AR  = i686-w64-mingw32-ar$(MINGW_FLAVOUR)
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: build/make/config-standard.mk
===================================================================
--- build/make/config-standard.mk	(revision 11150)
+++ build/make/config-standard.mk	(working copy)
@@ -4,7 +4,7 @@
 LD  ?= c++
 AR  = ar
 
-CXXFLAGS_STDCXX = -std=c++11
+CXXFLAGS_STDCXX = -std=c++14
 CFLAGS_STDC = -std=c99
 CXXFLAGS += $(CXXFLAGS_STDCXX)
 CFLAGS += $(CFLAGS_STDC)
Index: common/CompilerDetect.h
===================================================================
--- common/CompilerDetect.h	(revision 11150)
+++ common/CompilerDetect.h	(working copy)
@@ -51,8 +51,8 @@
 #define MPT_GCC_AT_LEAST(major,minor,patch)          (MPT_COMPILER_GCC_VERSION >= MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
 #define MPT_GCC_BEFORE(major,minor,patch)            (MPT_COMPILER_GCC_VERSION <  MPT_COMPILER_MAKE_VERSION3((major),(minor),(patch)))
 
-#if MPT_GCC_BEFORE(4,8,0)
-#error "GCC version 4.8 required"
+#if MPT_GCC_BEFORE(5,1,0)
+#error "GCC version 5.1 required"
 #endif
 
 #elif defined(_MSC_VER)
@@ -136,7 +136,7 @@
 #elif (__cplusplus >= 201402)
 #define MPT_CXX 14
 #else
-#define MPT_CXX 11
+#define MPT_CXX 14
 #endif
 
 #elif MPT_COMPILER_MSVC
@@ -147,15 +147,15 @@
 #elif (_MSVC_LANG >= 201402)
 #define MPT_CXX 14
 #else
-#define MPT_CXX 11
+#define MPT_CXX 14
 #endif
 #else
-#define MPT_CXX 11
+#define MPT_CXX 14
 #endif
 
 #else
 
-#define MPT_CXX 11
+#define MPT_CXX 14
 
 #endif
 
Index: common/Endianness.h
===================================================================
--- common/Endianness.h	(revision 11150)
+++ common/Endianness.h	(working copy)
@@ -85,7 +85,7 @@
 
 
 
-#if MPT_PLATFORM_ENDIAN_KNOWN && MPT_CXX_AT_LEAST(14)
+#if MPT_PLATFORM_ENDIAN_KNOWN
 //#define MPT_ENDIAN_IS_CONSTEXPR 1
 // For now, we do not want to use constexpr endianness functions and types.
 // It bloats the binary size somewhat (possibly because of either the zeroing
Index: common/mptAlloc.h
===================================================================
--- common/mptAlloc.h	(revision 11150)
+++ common/mptAlloc.h	(working copy)
@@ -79,19 +79,9 @@
 
 
 
-#if MPT_CXX_AT_LEAST(14)
 namespace mpt {
 using std::make_unique;
 } // namespace mpt
-#else
-namespace mpt {
-template<typename T, typename... Args>
-std::unique_ptr<T> make_unique(Args&&... args)
-{
-	return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
-}
-} // namespace mpt
-#endif
 
 
 
Index: common/mptBaseTypes.h
===================================================================
--- common/mptBaseTypes.h	(revision 11150)
+++ common/mptBaseTypes.h	(working copy)
@@ -22,9 +22,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#if MPT_GCC_BEFORE(4,9,0)
-#include <stddef.h>
-#endif
 #include <stdint.h>
 
 
@@ -91,11 +88,7 @@
 
 
 namespace mpt {
-#if MPT_GCC_BEFORE(4,9,0)
-typedef ::max_align_t max_align_t;
-#else
 typedef std::max_align_t max_align_t;
-#endif
 } // namespace mpt
 
 
Index: common/mptMemory.h
===================================================================
--- common/mptMemory.h	(revision 11150)
+++ common/mptMemory.h	(working copy)
@@ -132,7 +132,7 @@
 inline void MemsetZero(T &a)
 {
 	static_assert(std::is_pointer<T>::value == false, "Won't memset pointers.");
-#if MPT_GCC_BEFORE(5,1,0) || (MPT_COMPILER_CLANG && defined(__GLIBCXX__))
+#if MPT_COMPILER_CLANG && defined(__GLIBCXX__)
 	MPT_STATIC_ASSERT(std::is_standard_layout<T>::value);
 	MPT_STATIC_ASSERT(std::is_trivial<T>::value || mpt::is_binary_safe<T>::value); // approximation
 #else // default
@@ -158,7 +158,7 @@
 MPT_FORCEINLINE Tdst bit_cast(const Tsrc & src) noexcept
 {
 	MPT_STATIC_ASSERT(sizeof(Tdst) == sizeof(Tsrc));
-#if MPT_GCC_BEFORE(5,1,0) || (MPT_COMPILER_CLANG && defined(__GLIBCXX__))
+#if MPT_COMPILER_CLANG && defined(__GLIBCXX__)
 	MPT_STATIC_ASSERT(std::is_trivial<Tdst>::value); // approximation
 	MPT_STATIC_ASSERT(std::is_trivial<Tsrc>::value); // approximation
 #else // default
Index: libopenmpt/dox/changelog.md
===================================================================
--- libopenmpt/dox/changelog.md	(revision 11150)
+++ libopenmpt/dox/changelog.md	(working copy)
@@ -7,6 +7,9 @@
 
 ### libopenmpt 0.5.0-pre
 
+ *  [**Regression**] Support for C++11 has been removed. C++14 is now required.
+ *  [**Regression**] Support for GCC 4.8, 4.9 has been removed.
+
 ### libopenmpt 0.4.0
 
  *  [**New**] libopenmpt now includes emulation of the OPL chip and thus plays
Index: libopenmpt/dox/dependencies.md
===================================================================
--- libopenmpt/dox/dependencies.md	(revision 11150)
+++ libopenmpt/dox/dependencies.md	(working copy)
@@ -11,15 +11,15 @@
  *  Supported compilers for building libopenmpt:
      *  **Microsoft Visual Studio 2015** or higher, running on a x86-64 build
         system (other target systems are supported)
-     *  **GCC 4.8** or higher
+     *  **GCC 5.1** or higher
      *  **Clang 3.6** or higher
-     *  **MinGW-W64 4.8** or higher (it is recommended to preferably use
+     *  **MinGW-W64 5.1** or higher (it is recommended to preferably use
         posix threading model as opposed to win32 threading model, or at least
         have mingw-std-threads available otherwise)
      *  **emscripten 1.38.5** or higher
      *  **DJGPP GCC 7.2** or higher
-     *  any other **C++11 compliant** compiler (full standard compliant mode is
-        known to work with GCC >= 5.1 and Clang)
+     *  any other **C++14 compliant** compiler (full standard compliant mode is
+        known to work with GCC >= 5.1 and Clang >= 3.6)
         
         libopenmpt makes the following assumptions about the C++ implementation
         used for building:
@@ -75,11 +75,11 @@
  *  Supported compilers for building openmpt123:
      *  **Microsoft Visual Studio 2015** or higher, running on a x86-64 build
         system (other target systems are supported)
-     *  **GCC 4.8** or higher
+     *  **GCC 5.1** or higher
      *  **Clang 3.6** or higher
-     *  **MinGW-W64 4.8** or higher
+     *  **MinGW-W64 5.1** or higher
      *  **DJGPP GCC 7.2** or higher
-     *  any **C++11 compliant** compiler
+     *  any **C++14 compliant** compiler
  *  Live sound output requires one of:
      *  **PulseAudio**
      *  **SDL 2**
Index: libopenmpt/dox/quickstart.md
===================================================================
--- libopenmpt/dox/quickstart.md	(revision 11150)
+++ libopenmpt/dox/quickstart.md	(working copy)
@@ -7,7 +7,7 @@
 
  1. Grab a `libopenmpt-VERSION.autotools.tar.gz` tarball.
  2. Get dependencies:
-     -  **gcc >= 4.8** or **clang >= 3.6**
+     -  **gcc >= 5.1** or **clang >= 3.6**
      -  **pkg-config >= 0.24**
      -  **zlib**
      -  **libogg**, **libvorbis**, **libvorbisfile**
@@ -42,7 +42,7 @@
 
  1. Get dependencies:
      -  **GNU make**
-     -  **gcc >= 4.8** or **clang >= 3.6**
+     -  **gcc >= 5.1** or **clang >= 3.6**
      -  **pkg-config**
      -  **zlib**
      -  **libogg**, **libvorbis**, **libvorbisfile**
Index: libopenmpt/libopenmpt_version.h
===================================================================
--- libopenmpt/libopenmpt_version.h	(revision 11150)
+++ libopenmpt/libopenmpt_version.h	(working copy)
@@ -21,7 +21,7 @@
 /*! \brief libopenmpt patch version number */
 #define OPENMPT_API_VERSION_PATCH 0
 /*! \brief libopenmpt pre-release tag */
-#define OPENMPT_API_VERSION_PREREL "-pre.1"
+#define OPENMPT_API_VERSION_PREREL "-pre.2"
 /*! \brief libopenmpt pre-release flag */
 #define OPENMPT_API_VERSION_IS_PREREL 1
 
Index: libopenmpt/libopenmpt_version.mk
===================================================================
--- libopenmpt/libopenmpt_version.mk	(revision 11150)
+++ libopenmpt/libopenmpt_version.mk	(working copy)
@@ -1,7 +1,7 @@
 LIBOPENMPT_VERSION_MAJOR=0
 LIBOPENMPT_VERSION_MINOR=5
 LIBOPENMPT_VERSION_PATCH=0
-LIBOPENMPT_VERSION_PREREL=-pre.1
+LIBOPENMPT_VERSION_PREREL=-pre.2
 
 LIBOPENMPT_LTVER_CURRENT=2
 LIBOPENMPT_LTVER_REVISION=0