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[build] Add a script for installing db4

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Instead of maintaining not-easily-tested instructions for building BerkeleyDB
in doc/build-unix.md, package the installation as a script in contrib/. This
allows shared usage from a number of contexts, e.g. Docker.

Thanks to @jonasschnelli, @laanwj for feedback.
This commit is contained in:
James O'Beirne
2017-11-15 20:26:02 -08:00
parent 54aedc0137
commit af9103eb75
4 changed files with 103 additions and 43 deletions
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27
doc/build-openbsd.md
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@ -38,28 +38,17 @@ The default C++ compiler that comes with OpenBSD 6.2 is g++ 4.2.1. This version
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#berkeley-db) 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).
It is recommended to use Berkeley DB 4.8. You cannot use the BerkeleyDB library
from ports, for the same reason as boost above (g++/libstd++ incompatibility).
If you have to build it yourself, you can use [the installation script included
in contrib/](contrib/install_db4.sh) like so
```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
```shell
./contrib/install_db4.sh `pwd` CC=egcc CXX=eg++ CPP=ecpp
```
from the root of the repository.
### Resource limits
The standard ulimit restrictions in OpenBSD are very strict: