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118 lines
3.8 KiB
Markdown
118 lines
3.8 KiB
Markdown
OpenBSD build guide
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======================
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(updated for OpenBSD 6.2)
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This guide describes how to build bitcoind and command-line utilities on OpenBSD.
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OpenBSD is most commonly used as a server OS, so this guide does not contain instructions for building 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 git gmake libevent libtool
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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. 3.6)
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pkg_add boost
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git clone https://github.com/bitcoin/bitcoin.git
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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 6.2 is g++ 4.2.1. This version is old (from 2007), and is not able to compile the current version of Bitcoin Core because it has no C++11 support. We'll install a newer version of GCC:
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```bash
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pkg_add g++
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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 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#berkeley-db) 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, unfortunately, may no longer be enough to compile some `.cpp` files in the project,
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at least with GCC 4.9.4 (see issue [#6658](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` is set to the appropriate path 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 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 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 # use -jX here for parallelism
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gmake check
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```
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Clang
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------------------------------
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```bash
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pkg_add llvm
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./configure --disable-wallet --with-gui=no CC=clang CXX=clang++
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gmake # use -jX here for parallelism
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gmake check
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```
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