01cd24c226
Closes: #19559 While #19559 has been fixed upstream, it makes sense to not only recommend using `CC_FOR_BUILD`here until the fix is pulled in as part of our next libsecp update, but after discussing with Cory, he suggested we should be setting this on OpenBSD (which still has the an ancient GCC) regardless.
108 lines
3.3 KiB
Markdown
108 lines
3.3 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 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 boost
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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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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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