depends: build Boost with -std=c++17

Author: fanquake

ci/test/00_setup_env_native_msan.sh

@@ -15,7 +15,7 @@ export BDB_PREFIX="${BASE_ROOT_DIR}/db4"
 
 export CONTAINER_NAME="ci_native_msan"
 export PACKAGES="clang-9 llvm-9 cmake"
-export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}' boost_cxxflags='-std=c++11 -fvisibility=hidden -fPIC ${MSAN_AND_LIBCXX_FLAGS}' zeromq_cxxflags='-std=c++11 ${MSAN_AND_LIBCXX_FLAGS}'"
+export DEP_OPTS="NO_BDB=1 NO_QT=1 CC='clang' CXX='clang++' CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}' boost_cxxflags='-std=c++17 -fvisibility=hidden -fPIC ${MSAN_AND_LIBCXX_FLAGS}' zeromq_cxxflags='-std=c++11 ${MSAN_AND_LIBCXX_FLAGS}'"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-wallet --with-sanitizers=memory --with-asm=no --prefix=${BASE_ROOT_DIR}/depends/x86_64-pc-linux-gnu/ CC=clang CXX=clang++ CFLAGS='${MSAN_FLAGS}' CXXFLAGS='${MSAN_AND_LIBCXX_FLAGS}' BDB_LIBS='-L${BDB_PREFIX}/lib -ldb_cxx-4.8' BDB_CFLAGS='-I${BDB_PREFIX}/include'"
 export USE_MEMORY_SANITIZER="true"

depends/packages/boost.mk

@@ -27,7 +27,7 @@ ifneq (,$(findstring clang,$($(package)_cxx)))
 endif
 $(package)_archiver_$(host_os)=$($(package)_ar)
 $(package)_config_libraries=filesystem,system,thread,test
-$(package)_cxxflags=-std=c++11 -fvisibility=hidden
+$(package)_cxxflags=-std=c++17 -fvisibility=hidden
 $(package)_cxxflags_linux=-fPIC
 $(package)_cxxflags_android=-fPIC
 endef