diff --git a/doc/build-openbsd.md b/doc/build-openbsd.md index d42777e38..f392dc0cc 100644 --- a/doc/build-openbsd.md +++ b/doc/build-openbsd.md @@ -1,176 +1,175 @@ OpenBSD build guide ====================== (updated for OpenBSD 6.0) This guide describes how to build bitcoind and command-line utilities on OpenBSD. As OpenBSD is most common as a server OS, we will not bother with the GUI. Preparation ------------- Run the following as root to install the base dependencies for building: ```bash pkg_add gmake libtool libevent pkg_add autoconf # (select highest version, e.g. 2.69) pkg_add automake # (select highest version, e.g. 1.15) pkg_add python # (select highest version, e.g. 3.5) ``` The default C++ compiler that comes with OpenBSD 5.9 is g++ 4.2. This version is old (from 2007), and is not able to compile the current version of Bitcoin ABC, primarily as it has no C++11 support, but even before there were issues. So here we will be installing a newer compiler. GCC ------- You can install a newer version of gcc with: ```bash pkg_add g++ # (select newest 4.x version, e.g. 4.9.3) ``` This compiler will not overwrite the system compiler, it will be installed as `egcc` and `eg++` in `/usr/local/bin`. ### Building boost Do not use `pkg_add boost`! The boost version installed thus is compiled using the `g++` compiler not `eg++`, which will result in a conflict between `/usr/local/lib/libestdc++.so.XX.0` and `/usr/lib/libstdc++.so.XX.0`, resulting in a test crash: test_bitcoin:/usr/lib/libstdc++.so.57.0: /usr/local/lib/libestdc++.so.17.0 : WARNING: symbol(_ZN11__gnu_debug17_S_debug_me ssagesE) size mismatch, relink your program ... Segmentation fault (core dumped) This makes it necessary to build boost, or at least the parts used by Bitcoin ABC, manually: ``` # Pick some path to install boost to, here we create a directory within the bitcoin directory BITCOIN_ROOT=$(pwd) BOOST_PREFIX="${BITCOIN_ROOT}/boost" mkdir -p $BOOST_PREFIX # Fetch the source and verify that it is not tampered with curl -o boost_1_61_0.tar.bz2 http://heanet.dl.sourceforge.net/project/boost/boost/1.61.0/boost_1_61_0.tar.bz2 echo 'a547bd06c2fd9a71ba1d169d9cf0339da7ebf4753849a8f7d6fdb8feee99b640 boost_1_61_0.tar.bz2' | sha256 -c # MUST output: (SHA256) boost_1_61_0.tar.bz2: OK tar -xjf boost_1_61_0.tar.bz2 # Boost 1.61 needs one small patch for OpenBSD cd boost_1_61_0 # Also here: https://gist.githubusercontent.com/laanwj/bf359281dc319b8ff2e1/raw/92250de8404b97bb99d72ab898f4a8cb35ae1ea3/patch-boost_test_impl_execution_monitor_ipp.patch patch -p0 < /usr/ports/devel/boost/patches/patch-boost_test_impl_execution_monitor_ipp # Build w/ minimum configuration necessary for bitcoin echo 'using gcc : : eg++ : "-fvisibility=hidden -fPIC" "" "ar" "strip" "ranlib" "" : ;' > user-config.jam config_opts="runtime-link=shared threadapi=pthread threading=multi link=static variant=release --layout=tagged --build-type=complete --user-config=user-config.jam -sNO_BZIP2=1" ./bootstrap.sh --without-icu --with-libraries=chrono,filesystem,program_options,system,thread,test ./b2 -d2 -j2 -d1 ${config_opts} --prefix=${BOOST_PREFIX} stage ./b2 -d0 -j4 ${config_opts} --prefix=${BOOST_PREFIX} install ``` ### Building BerkeleyDB BerkeleyDB is only necessary for the wallet functionality. To skip this, pass `--disable-wallet` to `./configure`. -See "Berkeley DB" in [build_unix.md](build_unix.md) for instructions on how to build BerkeleyDB 4.8. You cannot use the BerkeleyDB library from ports, for the same reason as boost above (g++/libstd++ incompatibility). ```bash # Pick some path to install BDB to, here we create a directory within the bitcoin directory BITCOIN_ROOT=$(pwd) -BDB_PREFIX="${BITCOIN_ROOT}/db4" +BDB_PREFIX="${BITCOIN_ROOT}/db6" mkdir -p $BDB_PREFIX # Fetch the source and verify that it is not tampered with -curl -o db-4.8.30.NC.tar.gz 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz' -echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef db-4.8.30.NC.tar.gz' | sha256 -c -# MUST output: (SHA256) db-4.8.30.NC.tar.gz: OK -tar -xzf db-4.8.30.NC.tar.gz +curl -o db-6.2.32.NC.tar.gz 'http://download.oracle.com/berkeley-db/db-6.2.32.NC.tar.gz' +echo 'd86cf1283c519d42dd112b4501ecb2db11ae765b37a1bdad8f8cb06b0ffc69b8 db-6.2.32.NC.tar.gz' | sha256sum -c +# MUST output: (SHA256) db-6.2.32.NC.tar.gz: OK +tar -xzf db-6.2.32.NC.tar.gz # Build the library and install to specified prefix -cd db-4.8.30.NC/build_unix/ +cd db-6.2.32.NC/build_unix/ # Note: Do a static build so that it can be embedded into the executable, instead of having to find a .so at runtime ../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX CC=egcc CXX=eg++ CPP=ecpp make install # do NOT use -jX, this is broken ``` ### Resource limits The standard ulimit restrictions in OpenBSD are very strict: data(kbytes) 1572864 This is, unfortunately, no longer enough to compile some `.cpp` files in the project, at least with gcc 4.9.3 (see issue https://github.com/bitcoin/bitcoin/issues/6658). If your user is in the `staff` group the limit can be raised with: ulimit -d 3000000 The change will only affect the current shell and processes spawned by it. To make the change system-wide, change `datasize-cur` and `datasize-max` in `/etc/login.conf`, and reboot. ### Building Bitcoin ABC **Important**: use `gmake`, not `make`. The non-GNU `make` will exit with a horrible error. Preparation: ```bash export AUTOCONF_VERSION=2.69 # replace this with the autoconf version that you installed export AUTOMAKE_VERSION=1.15 # replace this with the automake version that you installed ./autogen.sh ``` Make sure `BDB_PREFIX` and `BOOST_PREFIX` are set to the appropriate paths from the above steps. To configure with wallet: ```bash ./configure --with-gui=no --with-boost=$BOOST_PREFIX \ CC=egcc CXX=eg++ CPP=ecpp \ - BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" BDB_CFLAGS="-I${BDB_PREFIX}/include" + BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-6.2" BDB_CFLAGS="-I${BDB_PREFIX}/include" ``` To configure without wallet: ```bash ./configure --disable-wallet --with-gui=no --with-boost=$BOOST_PREFIX \ CC=egcc CXX=eg++ CPP=ecpp ``` Build and run the tests: ```bash gmake # can use -jX here for parallelism gmake check ``` Clang (not currently working) ------------------------------ WARNING: This is outdated, needs to be updated for OpenBSD 6.0 and re-tried. Using a newer g++ results in linking the new code to a new libstdc++. Libraries built with the old g++, will still import the old library. This gives conflicts, necessitating rebuild of all C++ dependencies of the application. With clang this can - at least theoretically - be avoided because it uses the base system's libstdc++. ```bash pkg_add llvm boost ``` ```bash ./configure --disable-wallet --with-gui=no CC=clang CXX=clang++ gmake ``` However, this does not appear to work. Compilation succeeds, but link fails with many 'local symbol discarded' errors: local symbol 150: discarded in section `.text._ZN10tinyformat6detail14FormatIterator6finishEv' from libbitcoin_util.a(libbitcoin_util_a-random.o) local symbol 151: discarded in section `.text._ZN10tinyformat6detail14FormatIterator21streamStateFromFormatERSoRjPKcii' from libbitcoin_util.a(libbitcoin_util_a-random.o) local symbol 152: discarded in section `.text._ZN10tinyformat6detail12convertToIntIA13_cLb0EE6invokeERA13_Kc' from libbitcoin_util.a(libbitcoin_util_a-random.o) According to similar reported errors this is a binutils (ld) issue in 2.15, the version installed by OpenBSD 5.7: - http://openbsd-archive.7691.n7.nabble.com/UPDATE-cppcheck-1-65-td248900.html - https://llvm.org/bugs/show_bug.cgi?id=9758 There is no known workaround for this. diff --git a/doc/build-osx.md b/doc/build-osx.md index bc9566711..8f7e1d18d 100644 --- a/doc/build-osx.md +++ b/doc/build-osx.md @@ -1,104 +1,104 @@ Mac OS X Build Instructions and Notes ==================================== The commands in this guide should be executed in a Terminal application. The built-in one is located in `/Applications/Utilities/Terminal.app`. Preparation ----------- 1. Install Xcode from the app store if you don't have it already (it's a dependency for qt5) NOTE: Building with Qt4 is still supported, however, could result in a broken UI. Building with Qt5 is recommended. 2. Install the OS X command line tools: `xcode-select --install` When the popup appears, click `Install`. 3. Install [Homebrew](http://brew.sh). Dependencies ---------------------- Install dependencies: - brew install automake berkeley-db4 libtool boost --c++11 miniupnpc openssl pkg-config protobuf --c++11 qt5 libevent + brew install automake berkeley-db libtool boost --c++11 miniupnpc openssl pkg-config protobuf --c++11 qt5 libevent In case you want to build the disk image with `make deploy` (.dmg / optional), you need RSVG brew install librsvg Build Bitcoin ABC ----------------- 1. Clone the Bitcoin ABC source code and cd into `bitcoin-abc` git clone github.com/Bitcoin-ABC/bitcoin-abc cd bitcoin-abc 2. Build bitcoin-abc: Configure and build the headless bitcoin binaries as well as the GUI (if Qt is found). You can disable the GUI build by passing `--without-gui` to configure. ./autogen.sh ./configure make 3. It is recommended to build and run the unit tests: make check 4. You can also create a .dmg that contains the .app bundle (optional): make deploy Running ------- Bitcoin ABC is now available at `./src/bitcoind` Before running, it's recommended you create an RPC configuration file. echo -e "rpcuser=bitcoinrpc\nrpcpassword=$(xxd -l 16 -p /dev/urandom)" > "/Users/${USER}/Library/Application Support/Bitcoin/bitcoin.conf" chmod 600 "/Users/${USER}/Library/Application Support/Bitcoin/bitcoin.conf" The first time you run bitcoind, it will start downloading the blockchain. This process could take several hours. You can monitor the download process by looking at the debug.log file: tail -f $HOME/Library/Application\ Support/Bitcoin/debug.log Other commands: ------- ./src/bitcoind -daemon # Starts the bitcoin daemon. ./src/bitcoin-cli --help # Outputs a list of command-line options. ./src/bitcoin-cli help # Outputs a list of RPC commands when the daemon is running. Using Qt Creator as IDE ------------------------ You can use Qt Creator as an IDE, for bitcoin development. Download and install the community edition of [Qt Creator](https://www.qt.io/download/). Uncheck everything except Qt Creator during the installation process. 1. Make sure you installed everything through Homebrew mentioned above 2. Do a proper ./configure --enable-debug 3. In Qt Creator do "New Project" -> Import Project -> Import Existing Project 4. Enter "bitcoin-qt" as project name, enter src/qt as location 5. Leave the file selection as it is 6. Confirm the "summary page" 7. In the "Projects" tab select "Manage Kits..." 8. Select the default "Desktop" kit and select "Clang (x86 64bit in /usr/bin)" as compiler 9. Select LLDB as debugger (you might need to set the path to your installation) 10. Start debugging with Qt Creator Notes ----- * Tested on OS X 10.8 through 10.12 on 64-bit Intel processors only. * Building with downloaded Qt binaries is not officially supported. See the notes in [#7714](https://github.com/bitcoin/bitcoin/issues/7714) diff --git a/doc/build-unix.md b/doc/build-unix.md index 176ea0f74..3818bbaaf 100644 --- a/doc/build-unix.md +++ b/doc/build-unix.md @@ -1,358 +1,303 @@ UNIX BUILD NOTES ==================== Some notes on how to build Bitcoin ABC in Unix. (for OpenBSD specific instructions, see [build-openbsd.md](build-openbsd.md)) Note --------------------- Always use absolute paths to configure and compile bitcoin and the dependencies, for example, when specifying the path of the dependency: ../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX Here BDB_PREFIX must be an absolute path - it is defined using $(pwd) which ensures the usage of the absolute path. To Build --------------------- ```bash ./autogen.sh ./configure make make install # optional ``` This will build bitcoin-qt as well if the dependencies are met. Dependencies --------------------- These dependencies are required: Library | Purpose | Description ------------|------------------|---------------------- libssl | Crypto | Random Number Generation, Elliptic Curve Cryptography libboost | Utility | Library for threading, data structures, etc libevent | Networking | OS independent asynchronous networking Optional dependencies: Library | Purpose | Description ------------|------------------|---------------------- miniupnpc | UPnP Support | Firewall-jumping support - libdb4.8 | Berkeley DB | Wallet storage (only needed when wallet enabled) + libdb | Berkeley DB | Wallet storage (only needed when wallet enabled) qt | GUI | GUI toolkit (only needed when GUI enabled) protobuf | Payments in GUI | Data interchange format used for payment protocol (only needed when GUI enabled) libqrencode | QR codes in GUI | Optional for generating QR codes (only needed when GUI enabled) univalue | Utility | JSON parsing and encoding (bundled version will be used unless --with-system-univalue passed to configure) libzmq3 | ZMQ notification | Optional, allows generating ZMQ notifications (requires ZMQ version >= 4.x) For the versions used in the release, see [release-process.md](release-process.md) under *Fetch and build inputs*. Memory Requirements -------------------- C++ compilers are memory-hungry. It is recommended to have at least 1.5 GB of memory available when compiling Bitcoin ABC. On systems with less, gcc can be tuned to conserve memory with additional CXXFLAGS: ./configure CXXFLAGS="--param ggc-min-expand=1 --param ggc-min-heapsize=32768" Dependency Build Instructions: Ubuntu & Debian ---------------------------------------------- Build requirements: sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils Options when installing required Boost library files: 1. On at least Ubuntu 14.04+ and Debian 7+ there are generic names for the individual boost development packages, so the following can be used to only install necessary parts of boost: sudo apt-get install libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev 2. If that doesn't work, you can install all boost development packages with: sudo apt-get install libboost-all-dev -BerkeleyDB is required for the wallet. +BerkeleyDB 5.3 or later is required for the wallet. This can be installed with: -**For Ubuntu only:** db4.8 packages are available [here](https://launchpad.net/~bitcoin/+archive/bitcoin). -You can add the repository and install using the following commands: - - sudo apt-get install software-properties-common - sudo add-apt-repository ppa:bitcoin/bitcoin - sudo apt-get update - sudo apt-get install libdb4.8-dev libdb4.8++-dev - -For Debian, BerkeleyDB 4.8 can be installed by following the instructions in the “Berkeley DB” section below. - -Ubuntu and Debian have their own libdb-dev and libdb++-dev packages, but these will install -BerkeleyDB 5.1 or later, which break binary wallet compatibility with the distributed executables which -are based on BerkeleyDB 4.8. If you do not care about wallet compatibility, -pass `--with-incompatible-bdb` to configure. + sudo apt-get install libdb-dev + sudo apt-get install libdb++-dev See the section "Disable-wallet mode" to build Bitcoin ABC without wallet. Optional (see --with-miniupnpc and --enable-upnp-default): sudo apt-get install libminiupnpc-dev ZMQ dependencies (provides ZMQ API 4.x): sudo apt-get install libzmq3-dev Dependencies for the GUI: Ubuntu & Debian ----------------------------------------- If you want to build Bitcoin-Qt, make sure that the required packages for Qt development are installed. Either Qt 5 or Qt 4 are necessary to build the GUI. If both Qt 4 and Qt 5 are installed, Qt 5 will be used. Pass `--with-gui=qt4` to configure to choose Qt4. To build without GUI pass `--without-gui`. To build with Qt 5 (recommended) you need the following: sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler Alternatively, to build with Qt 4 you need the following: sudo apt-get install libqt4-dev libprotobuf-dev protobuf-compiler libqrencode (optional) can be installed with: sudo apt-get install libqrencode-dev Once these are installed, they will be found by configure and a bitcoin-qt executable will be built by default. Dependency Build Instructions: Fedora ------------------------------------- Build requirements: - sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel + sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb-devel libdb-cxx-devel Optional: sudo dnf install miniupnpc-devel To build with Qt 5 (recommended) you need the following: sudo dnf install qt5-qttools-devel qt5-qtbase-devel protobuf-devel libqrencode (optional) can be installed with: sudo dnf install qrencode-devel Notes ----- The release is built with GCC and then "strip bitcoind" to strip the debug symbols, which reduces the executable size by about 90%. miniupnpc --------- [miniupnpc](http://miniupnp.free.fr/) may be used for UPnP port mapping. It can be downloaded from [here]( http://miniupnp.tuxfamily.org/files/). UPnP support is compiled in and turned off by default. See the configure options for upnp behavior desired: --without-miniupnpc No UPnP support miniupnp not required --disable-upnp-default (the default) UPnP support turned off by default at runtime --enable-upnp-default UPnP support turned on by default at runtime - -Berkeley DB ------------ -It is recommended to use Berkeley DB 4.8. If you have to build it yourself: - -```bash -BITCOIN_ROOT=$(pwd) - -# Pick some path to install BDB to, here we install in /usr/local/db4 -BDB_PREFIX="/usr/local/db4" -sudo mkdir -p $BDB_PREFIX - -cd $BDB_PREFIX/.. - -# Fetch the source and verify that it is not tampered with -sudo wget 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz' -echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef db-4.8.30.NC.tar.gz' | sha256sum -c -# -> db-4.8.30.NC.tar.gz: OK -sudo tar -xzvf db-4.8.30.NC.tar.gz - -# Build the library and install to our prefix -cd db-4.8.30.NC/build_unix/ -# Note: Do a static build so that it can be embedded into the executable, instead of having to find a .so at runtime -sudo ../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX -sudo make install - -# Configure Bitcoin ABC to use our own-built instance of BDB -cd $BITCOIN_ROOT -./autogen.sh -./configure LDFLAGS="-L${BDB_PREFIX}/lib/" CPPFLAGS="-I${BDB_PREFIX}/include/" # (other args...) -``` - -**Note**: You only need Berkeley DB if the wallet is enabled (see the section *Disable-Wallet mode* below). - Boost ----- For documentation on building Boost look at their official documentation: http://www.boost.org/build/doc/html/bbv2/installation.html Security -------- To help make your bitcoin installation more secure by making certain attacks impossible to exploit even if a vulnerability is found, binaries are hardened by default. This can be disabled with: Hardening Flags: ./configure --enable-hardening ./configure --disable-hardening Hardening enables the following features: * Position Independent Executable Build position independent code to take advantage of Address Space Layout Randomization offered by some kernels. Attackers who can cause execution of code at an arbitrary memory location are thwarted if they don't know where anything useful is located. The stack and heap are randomly located by default but this allows the code section to be randomly located as well. On an AMD64 processor where a library was not compiled with -fPIC, this will cause an error such as: "relocation R_X86_64_32 against `......' can not be used when making a shared object;" To test that you have built PIE executable, install scanelf, part of paxutils, and use: scanelf -e ./bitcoin The output should contain: TYPE ET_DYN * Non-executable Stack If the stack is executable then trivial stack based buffer overflow exploits are possible if vulnerable buffers are found. By default, bitcoin should be built with a non-executable stack but if one of the libraries it uses asks for an executable stack or someone makes a mistake and uses a compiler extension which requires an executable stack, it will silently build an executable without the non-executable stack protection. To verify that the stack is non-executable after compiling use: `scanelf -e ./bitcoin` the output should contain: STK/REL/PTL RW- R-- RW- The STK RW- means that the stack is readable and writeable but not executable. Disable-wallet mode -------------------- When the intention is to run only a P2P node without a wallet, bitcoin may be compiled in disable-wallet mode with: ./configure --disable-wallet -In this case there is no dependency on Berkeley DB 4.8. - Mining is also possible in disable-wallet mode, but only using the `getblocktemplate` RPC call not `getwork`. Additional Configure Flags -------------------------- A list of additional configure flags can be displayed with: ./configure --help Setup and Build Example: Arch Linux ----------------------------------- This example lists the steps necessary to setup and build a command line only, non-wallet distribution of the latest changes on Arch Linux: pacman -S git base-devel boost libevent python git clone https://github.com/Bitcoin-ABC/bitcoin-abc cd bitcoin-abc/ ./autogen.sh ./configure --disable-wallet --without-gui --without-miniupnpc make check -Note: -Enabling wallet support requires either compiling against a Berkeley DB newer than 4.8 (package `db`) using `--with-incompatible-bdb`, -or building and depending on a local version of Berkeley DB 4.8. The readily available Arch Linux packages are currently built using -`--with-incompatible-bdb` according to the [PKGBUILD](https://projects.archlinux.org/svntogit/community.git/tree/bitcoin/trunk/PKGBUILD). -As mentioned above, when maintaining portability of the wallet between the standard Bitcoin Core distributions and independently built -node software is desired, Berkeley DB 4.8 must be used. - ARM Cross-compilation ------------------- These steps can be performed on, for example, an Ubuntu VM. The depends system will also work on other Linux distributions, however the commands for installing the toolchain will be different. Make sure you install the build requirements mentioned above. Then, install the toolchain and curl: sudo apt-get install g++-arm-linux-gnueabihf curl To build executables for ARM: cd depends make HOST=arm-linux-gnueabihf NO_QT=1 cd .. ./configure --prefix=$PWD/depends/arm-linux-gnueabihf --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++ make For further documentation on the depends system see [README.md](../depends/README.md) in the depends directory. Building on FreeBSD -------------------- (Updated as of FreeBSD 11.0) Clang is installed by default as `cc` compiler, this makes it easier to get started than on [OpenBSD](build-openbsd.md). Installing dependencies: pkg install autoconf automake libtool pkgconf pkg install boost-libs openssl libevent gmake (`libressl` instead of `openssl` will also work) For the wallet (optional): pkg install db5 This will give a warning "configure: WARNING: Found Berkeley DB other than 4.8; wallets opened by this build will not be portable!", but as FreeBSD never had a binary release, this may not matter. If backwards compatibility with 4.8-built Bitcoin Core is needed follow the steps under "Berkeley DB" above. Also, if you intend to run the regression tests (qa tests): pkg install python3 Then build using: ./autogen.sh With wallet support: ./configure --without-gui --without-miniupnpc --with-incompatible-bdb BDB_CFLAGS="-I/usr/local/include/db5" BDB_LIBS="-L/usr/local/lib -ldb_cxx-5" Without wallet support: ./configure --without-gui --without-miniupnpc --disable-wallet Then to compile: gmake *Note on debugging*: The version of `gdb` installed by default is [ancient and considered harmful](https://wiki.freebsd.org/GdbRetirement). It is not suitable for debugging a multi-threaded C++ program, not even for getting backtraces. Please install the package `gdb` and use the versioned gdb command e.g. `gdb7111`. diff --git a/doc/release-notes.md b/doc/release-notes.md index 6092bbc5e..8bb899988 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -1,9 +1,10 @@ Bitcoin ABC version 0.17.2 is now available from: This release includes the following features and fixes: - Remove deprecated `estimatepriority` RPC. - Remove deprecated `estimatesmartpriority` RPC. - Remove support for `-sendfreetransactions`. - Remove unstable `estimatesmartfee` RPC. + - Update berkley DB to 5.3 minimum. Developers should update their build environment accordingly.