Enable C++20 support needed for Bitcoin core libraries.

Update Boost 1.83.0 since 1.81.0 does not work with cpp20.

Author: aleflm

CMakeLists.txt

@@ -84,7 +84,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND NOT CMAKE_HOST_APPLE)
   set(CMAKE_PLATFORM_HAS_INSTALLNAME FALSE)
 endif()
 enable_language(CXX)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 

depends/packages/bdb.mk

@@ -9,7 +9,7 @@ define $(package)_set_vars
 $(package)_config_opts=--disable-shared --enable-cxx --disable-replication
 $(package)_config_opts_mingw32=--enable-mingw
 $(package)_config_opts_linux=--with-pic
-$(package)_cxxflags=-std=c++11
+$(package)_cxxflags=-std=c++20
 $(package)_cc+=-Wno-error=implicit-function-declaration
 endef
 

depends/packages/boost.mk

@@ -1,8 +1,8 @@
 package=boost
-$(package)_version=1.81.0
+$(package)_version=1.83.0
 $(package)_download_path=https://archives.boost.io/release/$($(package)_version)/source/
 $(package)_file_name=boost_$(subst .,_,$($(package)_version)).tar.bz2
-$(package)_sha256_hash=71feeed900fbccca04a3b4f2f84a7c217186f28a940ed8b7ed4725986baf99fa
+$(package)_sha256_hash=6478edfe2f3305127cffe8caf73ea0176c53769f4bf1585be237eb30798c3b8e
 $(package)_dependencies=native_b2
 $(package)_patches=fix_boost_jam_cross-compilation.patch
 
@@ -21,7 +21,7 @@ $(package)_config_opts_i686_linux=address-model=32 architecture=x86
 $(package)_toolset_$(host_os)=gcc
 $(package)_archiver_$(host_os)=$($(package)_ar)
 $(package)_toolset_darwin=darwin
-$(package)_cxxflags=-std=c++17
+$(package)_cxxflags=-std=c++20
 $(package)_cxxflags_linux+=-fPIC
 $(package)_cxxflags_freebsd+=-fPIC
 $(package)_cxxflags_darwin+=-ffile-prefix-map=$($(package)_extract_dir)=/usr

depends/packages/qt.mk

@@ -52,7 +52,7 @@ $(package)_config_opts_debug = -debug
 $(package)_config_opts = -no-egl
 $(package)_config_opts_debug += -optimized-tools
 $(package)_config_opts += -bindir $(build_prefix)/bin
-$(package)_config_opts += -c++std c++17
+$(package)_config_opts += -c++std c++20
 $(package)_config_opts += -confirm-license
 $(package)_config_opts += -no-cups
 $(package)_config_opts += -no-egl

depends/packages/zeromq.mk

@@ -12,7 +12,7 @@ define $(package)_set_vars
   $(package)_config_opts += --disable-Werror --disable-drafts --enable-option-checking
   $(package)_config_opts_linux=--with-pic
   $(package)_config_opts_android=--with-pic
-  $(package)_cxxflags=-std=c++17
+  $(package)_cxxflags=-std=c++20
 ifdef GUIX_ENVIRONMENT
 $(package)_config_env_x86_64_darwin = LIB_LIBRARY_BACKUP="$(LIBRARY_PATH)" LIBRARY_PATH=""
 endif

src/init.cpp

@@ -2062,7 +2062,7 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
         while (!fHaveGenesis) {
             condvar_GenesisWait.wait(lock);
         }
-        uiInterface.NotifyBlockTip.disconnect(BlockNotifyGenesisWait);
+        uiInterface.NotifyBlockTip.disconnect(&BlockNotifyGenesisWait);
     }
 
     // ********************************************************* Step 12: start node

src/secp256k1/CMakeLists.txt

@@ -40,7 +40,7 @@ set(${PROJECT_NAME}_LIB_VERSION_AGE 0)
 #=============================
 set(CMAKE_C_STANDARD 90)
 set(CMAKE_C_EXTENSIONS OFF)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
 #=============================

src/support/allocators/mt_pooled_secure.h

@@ -20,10 +20,12 @@ struct mt_pooled_secure_allocator : public std::allocator<T> {
     typedef std::allocator<T> base;
     typedef typename base::size_type size_type;
     typedef typename base::difference_type difference_type;
-    typedef typename base::pointer pointer;
-    typedef typename base::const_pointer const_pointer;
-    typedef typename base::reference reference;
-    typedef typename base::const_reference const_reference;
+ 
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef T& reference;
+    typedef const T& const_reference;
+ 
     typedef typename base::value_type value_type;
     mt_pooled_secure_allocator(size_type nrequested_size = 32,
                                size_type nnext_size = 32,

src/support/allocators/pooled_secure.h

@@ -25,10 +25,12 @@ struct pooled_secure_allocator : public std::allocator<T> {
     typedef std::allocator<T> base;
     typedef typename base::size_type size_type;
     typedef typename base::difference_type difference_type;
-    typedef typename base::pointer pointer;
-    typedef typename base::const_pointer const_pointer;
-    typedef typename base::reference reference;
-    typedef typename base::const_reference const_reference;
+
+    typedef T* pointer;
+    typedef const T* const_pointer;
+    typedef T& reference;
+    typedef const T& const_reference;
+
     typedef typename base::value_type value_type;
     pooled_secure_allocator(const size_type nrequested_size = 32,
                             const size_type nnext_size = 32,