116 lines
3.4 KiB
Markdown
116 lines
3.4 KiB
Markdown
OpenBSD build guide
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======================
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(updated for OpenBSD 6.7)
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This guide describes how to build bitcoind, bitcoin-qt, and command-line utilities on OpenBSD.
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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 boost
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pkg_add qt5 # (optional for enabling the GUI)
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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. 1.16)
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pkg_add python # (select highest version, e.g. 3.8)
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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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**Important**: From OpenBSD 6.2 onwards a C++11-supporting clang compiler is
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part of the base image, and while building it is necessary to make sure that
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this compiler is used and not ancient g++ 4.2.1. This is done by appending
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`CC=cc CC_FOR_BUILD=cc CXX=c++` to configuration commands. Mixing different
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compilers within the same executable will result in errors.
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### Building BerkeleyDB
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BerkeleyDB is only necessary for the wallet functionality. To skip this, pass
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`--disable-wallet` to `./configure` and skip to the next section.
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It is recommended to use Berkeley DB 4.8. You cannot use the BerkeleyDB library
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from ports, for the same reason as boost above (g++/libstd++ incompatibility).
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If you have to build it yourself, you can use [the installation script included
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in contrib/](/contrib/install_db4.sh) like so:
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```bash
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./contrib/install_db4.sh `pwd` CC=cc CXX=c++
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```
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from the root of the repository. Then set `BDB_PREFIX` for the next section:
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```bash
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export BDB_PREFIX="$PWD/db4"
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```
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### Building Bitcoin Core
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**Important**: Use `gmake` (the non-GNU `make` will exit with an error).
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Preparation:
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```bash
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# Replace this with the autoconf version that you installed. Include only
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# the major and minor parts of the version: use "2.69" for "autoconf-2.69p2".
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export AUTOCONF_VERSION=2.69
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# Replace this with the automake version that you installed. Include only
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# the major and minor parts of the version: use "1.16" for "automake-1.16.1".
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export AUTOMAKE_VERSION=1.16
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./autogen.sh
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```
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Make sure `BDB_PREFIX` is set to the appropriate path from the above steps.
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To configure with wallet:
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```bash
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./configure --with-gui=no CC=cc CXX=c++ \
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BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" \
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BDB_CFLAGS="-I${BDB_PREFIX}/include" \
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MAKE=gmake
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```
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To configure without wallet:
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```bash
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./configure --disable-wallet --with-gui=no CC=cc CC_FOR_BUILD=cc CXX=c++ MAKE=gmake
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```
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To configure with GUI:
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```bash
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./configure --with-gui=yes CC=cc CXX=c++ \
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BDB_LIBS="-L${BDB_PREFIX}/lib -ldb_cxx-4.8" \
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BDB_CFLAGS="-I${BDB_PREFIX}/include" \
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MAKE=gmake
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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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Resource limits
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-------------------
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If the build runs into out-of-memory errors, the instructions in this section
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might help.
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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, in some cases not enough to compile some `.cpp` files in the project,
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(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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