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 Core, 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 Core, 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" mkdir -p $BDB_PREFIX # Fetch the source and verify that it is not tampered with curl -o db-4.8.30.NC.tar.gz 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz' echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef db-4.8.30.NC.tar.gz' | sha256 -c # MUST output: (SHA256) db-4.8.30.NC.tar.gz: OK tar -xzf db-4.8.30.NC.tar.gz # Build the library and install to specified prefix cd db-4.8.30.NC/build_unix/ # Note: Do a static build so that it can be embedded into the executable, instead of having to find a .so at runtime ../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$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 Core **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${BDB_PREFIX}/include" ``` To configure without wallet: ```bash ./configure --disable-wallet --with-gui=no --with-boost=$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.