Build: require C11/C++11 for all operating systems in master.

This is in preparation of upgrading our library dependencies, some of which
need C++11. We already use C++11 in blender2.8 and for Windows and macOS, so
this just affects Linux.

On many distributions this will not require any changes, on some
install_deps.sh will need to be run again to rebuild libraries.

Differential Revision: https://developer.blender.org/D3568

5 files changed, 4 insertions, 123 deletions

diff --git a/source/blender/alembic/intern/abc_customdata.cc b/source/blender/alembic/intern/abc_customdata.cc
index 87545007870..f2ae1c831d1 100644
--- a/source/blender/alembic/intern/abc_customdata.cc
+++ b/source/blender/alembic/intern/abc_customdata.cc
@@ -26,14 +26,7 @@
 
 #include <Alembic/AbcGeom/All.h>
 #include <algorithm>
-
-#if (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1900)
 #include <unordered_map>
-typedef std::unordered_map<uint64_t, int> uv_index_map;
-#else
-#include <map>
-typedef std::map<uint64_t, int> uv_index_map;
-#endif
 
 extern "C" {
 #include "DNA_customdata_types.h"
@@ -60,6 +53,8 @@ using Alembic::AbcGeom::OV2fGeomParam;
 using Alembic::AbcGeom::OC4fGeomParam;
 
 
+typedef std::unordered_map<uint64_t, int> uv_index_map;
+
 static inline uint64_t uv_to_hash_key(Imath::V2f v)
 {
 	/* Convert -0.0f to 0.0f, so bitwise comparison works. */
diff --git a/source/blender/blenlib/BLI_compiler_compat.h b/source/blender/blenlib/BLI_compiler_compat.h
index 0726e3bb343..2b53975a106 100644
--- a/source/blender/blenlib/BLI_compiler_compat.h
+++ b/source/blender/blenlib/BLI_compiler_compat.h
@@ -32,11 +32,7 @@
 #  define alloca _alloca
 #endif
 
-#if defined(__cplusplus) && ((__cplusplus >= 201103L) || defined(_MSC_VER))
-#  define HAS_CPP11_FEATURES
-#endif
-
-#if (defined(__GNUC__) || defined(__clang__)) && defined(HAS_CPP11_FEATURES)
+#if (defined(__GNUC__) || defined(__clang__)) && defined(__cplusplus)
 extern "C++" {
 	/* Some magic to be sure we don't have reference in the type. */
 	template<typename T> static inline T decltype_helper(T x) { return x; }
diff --git a/source/blender/depsgraph/CMakeLists.txt b/source/blender/depsgraph/CMakeLists.txt
index 50c0910ef02..ced045e9e2f 100644
--- a/source/blender/depsgraph/CMakeLists.txt
+++ b/source/blender/depsgraph/CMakeLists.txt
@@ -100,28 +100,6 @@ set(SRC
 	util/deg_util_function.h
 )
 
-if(WITH_CXX11)
-	add_definitions(-DDEG_STD_UNORDERED_MAP)
-elseif(HAVE_STD_UNORDERED_MAP_HEADER)
-	if(HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
-		add_definitions(-DDEG_STD_UNORDERED_MAP)
-	else()
-		if(HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
-			add_definitions(-DDEG_STD_UNORDERED_MAP_IN_TR1_NAMESPACE)
-		else()
-			add_definitions(-DDEG_NO_UNORDERED_MAP)
-			message(STATUS "Replacing unordered_map/set with map/set (warning: slower!)")
-		endif()
-	endif()
-else()
-	if(HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
-		add_definitions(-DDEG_TR1_UNORDERED_MAP)
-	else()
-		add_definitions(-DDEG_NO_UNORDERED_MAP)
-		message(STATUS "Replacing unordered_map/set with map/set (warning: slower!)")
-	endif()
-endif()
-
 if(WITH_LEGACY_DEPSGRAPH)
 	add_definitions(-DWITH_LEGACY_DEPSGRAPH)
 endif()
diff --git a/source/blender/depsgraph/util/deg_util_foreach.h b/source/blender/depsgraph/util/deg_util_foreach.h
index cb7361fc708..5484192207b 100644
--- a/source/blender/depsgraph/util/deg_util_foreach.h
+++ b/source/blender/depsgraph/util/deg_util_foreach.h
@@ -30,19 +30,4 @@
 
 #pragma once
 
-#if (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
-#  define foreach(x, y) for(x : y)
-#elif defined(HAVE_BOOST_FUNCTION_BINDINGS)
-#  include <boost/foreach.hpp>
-#  define foreach BOOST_FOREACH
-#else
-#pragma message("No available foreach() implementation. Using stub instead, disabling new depsgraph")
-
-#ifndef WITH_LEGACY_DEPSGRAPH
-#  error "Unable to build new depsgraph and legacy one is disabled."
-#endif
-
-#define DISABLE_NEW_DEPSGRAPH
-
-#  define foreach(x, y) for (x; false; (void)y)
-#endif
+#define foreach(x, y) for(x : y)
diff --git a/source/blender/depsgraph/util/deg_util_function.h b/source/blender/depsgraph/util/deg_util_function.h
index 38e753ce925..8863d92eb74 100644
--- a/source/blender/depsgraph/util/deg_util_function.h
+++ b/source/blender/depsgraph/util/deg_util_function.h
@@ -30,81 +30,8 @@
 
 #pragma once
 
-#if (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1900)
-
 #include <functional>
 
 using std::function;
 using namespace std::placeholders;
 #define function_bind std::bind
-
-#elif defined(HAVE_BOOST_FUNCTION_BINDINGS)
-
-#include <boost/bind.hpp>
-#include <boost/function.hpp>
-
-using boost::function;
-#define function_bind boost::bind
-
-#else
-
-#pragma message("No available function binding implementation. Using stub instead, disabling new depsgraph")
-
-#ifndef WITH_LEGACY_DEPSGRAPH
-#  error "Unable to build new depsgraph and legacy one is disabled."
-#endif
-
-#define DISABLE_NEW_DEPSGRAPH
-
-#include "BLI_utildefines.h"
-#include <cstdlib>
-
-template<typename T>
-class function {
-public:
-	function() {};
-	function(void *) {}
-	operator bool() const { return false; }
-	bool operator== (void *) { return false; }
-
-	template<typename T1>
-	void operator() (T1) {
-		BLI_assert(!"Should not be used");
-	}
-};
-
-class Wrap {
-public:
-	Wrap() {}
-	template <typename T>
-	Wrap(T /*arg*/) {}
-};
-
-template <typename T>
-void *function_bind(T func,
-                    Wrap arg1 = Wrap(),
-                    Wrap arg2 = Wrap(),
-                    Wrap arg3 = Wrap(),
-                    Wrap arg4 = Wrap(),
-                    Wrap arg5 = Wrap(),
-                    Wrap arg6 = Wrap(),
-                    Wrap arg7 = Wrap())
-{
-	BLI_assert(!"Should not be used");
-	(void)func;
-	(void)arg1;
-	(void)arg2;
-	(void)arg3;
-	(void)arg4;
-	(void)arg5;
-	(void)arg6;
-	(void)arg7;
-	return NULL;
-}
-
-#define _1 Wrap()
-#define _2 Wrap()
-#define _3 Wrap()
-#define _4 Wrap()
-
-#endif