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f65614726d
e91b96192 Create dependencies.md, and link dependencies file from README & build docs (flack)
Pull request description:
As @fanquake mentioned in #8639, this should probably be a file in `doc/`, so I went ahead and pulled the issue text via the github API and dumped it into a file. No modifications made, except one spelling fix. This makes the info easier to find, and it will get a proper version history, too.
Tree-SHA512: 6ba4c37c97200972a74724e0e346d6ad5947c01ad18638e15250f2b4cd747dd744aba16e306c98d59f35736542a5eded7a17b6a5ce6aebc63c0a9dc969b365ef
177 lines
7.1 KiB
Markdown
177 lines
7.1 KiB
Markdown
OpenBSD build guide
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======================
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(updated for OpenBSD 6.1)
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This guide describes how to build bitcoind and command-line utilities on OpenBSD.
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As OpenBSD is most common as a server OS, we will not bother with the GUI.
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Preparation
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-------------
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Run the following as root to install the base dependencies for building:
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```bash
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pkg_add gmake libtool libevent
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pkg_add autoconf # (select highest version, e.g. 2.69)
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pkg_add automake # (select highest version, e.g. 1.15)
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pkg_add python # (select highest version, e.g. 3.5)
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```
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See [dependencies.md](dependencies.md) for a complete overview.
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GCC
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-------
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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:
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```bash
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pkg_add g++ # (select newest 4.x version, e.g. 4.9.3)
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```
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This compiler will not overwrite the system compiler, it will be installed as `egcc` and `eg++` in `/usr/local/bin`.
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### Building boost
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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:
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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
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...
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Segmentation fault (core dumped)
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This makes it necessary to build boost, or at least the parts used by Bitcoin Core, manually:
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```
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# Pick some path to install boost to, here we create a directory within the bitcoin directory
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BITCOIN_ROOT=$(pwd)
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BOOST_PREFIX="${BITCOIN_ROOT}/boost"
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mkdir -p $BOOST_PREFIX
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# Fetch the source and verify that it is not tampered with
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curl -o boost_1_64_0.tar.bz2 https://netcologne.dl.sourceforge.net/project/boost/boost/1.64.0/boost_1_64_0.tar.bz2
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echo '7bcc5caace97baa948931d712ea5f37038dbb1c5d89b43ad4def4ed7cb683332 boost_1_64_0.tar.bz2' | sha256 -c
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# MUST output: (SHA256) boost_1_64_0.tar.bz2: OK
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tar -xjf boost_1_64_0.tar.bz2
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# Boost 1.64 needs one small patch for OpenBSD
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cd boost_1_64_0
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# Also here: https://gist.githubusercontent.com/laanwj/bf359281dc319b8ff2e1/raw/92250de8404b97bb99d72ab898f4a8cb35ae1ea3/patch-boost_test_impl_execution_monitor_ipp.patch
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patch -p0 < /usr/ports/devel/boost/patches/patch-boost_test_impl_execution_monitor_ipp
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# Build w/ minimum configuration necessary for bitcoin
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echo 'using gcc : : eg++ : <cxxflags>"-fvisibility=hidden -fPIC" <linkflags>"" <archiver>"ar" <striper>"strip" <ranlib>"ranlib" <rc>"" : ;' > user-config.jam
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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"
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./bootstrap.sh --without-icu --with-libraries=chrono,filesystem,program_options,system,thread,test
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./b2 -d2 -j2 -d1 ${config_opts} --prefix=${BOOST_PREFIX} stage
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./b2 -d0 -j4 ${config_opts} --prefix=${BOOST_PREFIX} install
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```
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### Building BerkeleyDB
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BerkeleyDB is only necessary for the wallet functionality. To skip this, pass `--disable-wallet` to `./configure`.
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See "Berkeley DB" in [build_unix.md](build_unix.md) for instructions on how to build BerkeleyDB 4.8.
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You cannot use the BerkeleyDB library from ports, for the same reason as boost above (g++/libstd++ incompatibility).
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```bash
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# Pick some path to install BDB to, here we create a directory within the bitcoin directory
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BITCOIN_ROOT=$(pwd)
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BDB_PREFIX="${BITCOIN_ROOT}/db4"
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mkdir -p $BDB_PREFIX
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# Fetch the source and verify that it is not tampered with
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curl -o db-4.8.30.NC.tar.gz 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz'
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echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef db-4.8.30.NC.tar.gz' | sha256 -c
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# MUST output: (SHA256) db-4.8.30.NC.tar.gz: OK
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tar -xzf db-4.8.30.NC.tar.gz
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# Build the library and install to specified prefix
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cd db-4.8.30.NC/build_unix/
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# Note: Do a static build so that it can be embedded into the executable, instead of having to find a .so at runtime
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../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX CC=egcc CXX=eg++ CPP=ecpp
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make install # do NOT use -jX, this is broken
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```
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### Resource limits
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The standard ulimit restrictions in OpenBSD are very strict:
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data(kbytes) 1572864
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This is, unfortunately, no longer enough to compile some `.cpp` files in the project,
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at least with gcc 4.9.3 (see issue https://github.com/bitcoin/bitcoin/issues/6658).
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If your user is in the `staff` group the limit can be raised with:
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ulimit -d 3000000
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The change will only affect the current shell and processes spawned by it. To
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make the change system-wide, change `datasize-cur` and `datasize-max` in
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`/etc/login.conf`, and reboot.
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### Building Bitcoin Core
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**Important**: use `gmake`, not `make`. The non-GNU `make` will exit with a horrible error.
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Preparation:
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```bash
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export AUTOCONF_VERSION=2.69 # replace this with the autoconf version that you installed
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export AUTOMAKE_VERSION=1.15 # replace this with the automake version that you installed
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./autogen.sh
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```
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Make sure `BDB_PREFIX` and `BOOST_PREFIX` are set to the appropriate paths from the above steps.
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To configure with wallet:
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```bash
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./configure --with-gui=no --with-boost=$BOOST_PREFIX \
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CC=egcc CXX=eg++ CPP=ecpp \
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BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" BDB_CFLAGS="-I${BDB_PREFIX}/include"
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```
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To configure without wallet:
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```bash
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./configure --disable-wallet --with-gui=no --with-boost=$BOOST_PREFIX \
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CC=egcc CXX=eg++ CPP=ecpp
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```
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Build and run the tests:
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```bash
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gmake # can use -jX here for parallelism
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gmake check
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```
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Clang (not currently working)
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------------------------------
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WARNING: This is outdated, needs to be updated for OpenBSD 6.0 and re-tried.
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Using a newer g++ results in linking the new code to a new libstdc++.
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Libraries built with the old g++, will still import the old library.
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This gives conflicts, necessitating rebuild of all C++ dependencies of the application.
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With clang this can - at least theoretically - be avoided because it uses the
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base system's libstdc++.
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```bash
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pkg_add llvm boost
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```
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```bash
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./configure --disable-wallet --with-gui=no CC=clang CXX=clang++
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gmake
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```
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However, this does not appear to work. Compilation succeeds, but link fails
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with many 'local symbol discarded' errors:
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local symbol 150: discarded in section `.text._ZN10tinyformat6detail14FormatIterator6finishEv' from libbitcoin_util.a(libbitcoin_util_a-random.o)
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local symbol 151: discarded in section `.text._ZN10tinyformat6detail14FormatIterator21streamStateFromFormatERSoRjPKcii' from libbitcoin_util.a(libbitcoin_util_a-random.o)
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local symbol 152: discarded in section `.text._ZN10tinyformat6detail12convertToIntIA13_cLb0EE6invokeERA13_Kc' from libbitcoin_util.a(libbitcoin_util_a-random.o)
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According to similar reported errors this is a binutils (ld) issue in 2.15, the
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version installed by OpenBSD 5.7:
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- http://openbsd-archive.7691.n7.nabble.com/UPDATE-cppcheck-1-65-td248900.html
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- https://llvm.org/bugs/show_bug.cgi?id=9758
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There is no known workaround for this.
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