Compiling wallet: finding BDB_PREFIX?

dchmelik · March 17, 2024, 2:37am

I’m trying to compile wallet on GNU/Linux and someone told me the following.

export BDB_PREFIX='/XXX/db4'

Unreal; what do they mean?

Normally I use development-focused UNIX/GNU/Linux (no separate development packages) but this time a computer without one that instead has libdb4.8-dev… nevertheless, searching entire filesystem (fs) I couldn’t find db4 directory/folder (other than db4 documentation).

I’m not really a BTG developer though I try to find/report bugs, and though this is more a technical-oriented user question, I thought it’s best in this subforum (administrators feel free to move it if it’s better elsewhere).

MentalNomad · March 17, 2024, 4:23am

export is setting the path environment variable.

You’re telling it where you have the Berkeley database files installed - in the a /db4 folder somewhere. Where, exactly, depends on your Linux version and where you chose to install it.

dchmelik · March 17, 2024, 4:26am

The one I’m trying to compile this on is Debian-/Ubuntu-based. I see Ubuntu has its own libdb4.8-dev (separate from Debian) which would be unchanged on variant I use. Actually I may have installed BTC programmer/developer lukejr’s one. Should I install a different one?

MentalNomad · March 17, 2024, 3:53pm

I suggest install_db4.sh from

github.com

BTCGPU/BTCGPU/blob/master/contrib/install_db4.sh

#!/bin/sh

# Install libdb4.8 (Berkeley DB).

export LC_ALL=C
set -e

if [ -z "${1}" ]; then
  echo "Usage: ./install_db4.sh <base-dir> [<extra-bdb-configure-flag> ...]"
  echo
  echo "Must specify a single argument: the directory in which db4 will be built."
  echo "This is probably \`pwd\` if you're at the root of the bitcoin repository."
  exit 1
fi

expand_path() {
  echo "$(cd "${1}" && pwd -P)"
}

BDB_PREFIX="$(expand_path ${1})/db4"; shift;

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I think that should match

github.com

bitcoin/bitcoin/blob/v0.17.2/contrib/install_db4.sh

#!/bin/sh

# Install libdb4.8 (Berkeley DB).

export LC_ALL=C
set -e

if [ -z "${1}" ]; then
  echo "Usage: ./install_db4.sh <base-dir> [<extra-bdb-configure-flag> ...]"
  echo
  echo "Must specify a single argument: the directory in which db4 will be built."
  echo "This is probably \`pwd\` if you're at the root of the bitcoin repository."
  exit 1
fi

expand_path() {
  echo "$(cd "${1}" && pwd -P)"
}

BDB_PREFIX="$(expand_path ${1})/db4"; shift;

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