HACKING.postgres

PostgreSQL depends on some environment variables and directories which
are easiest to have via a .bashrc like this:

export PG_PREFIX=/home/shackle/tip
export PGDATA=$PG_PREFIX/data
export PATH=$PG_PREFIX/bin:$PATH
export PGPORT=2225
export PGUSER=shackle
export PGDATABASE=postgres

When you want to work on CVS TIP (aka git master) of PostgreSQL, you'd
source this file first.  If you want to change to another
PostgreSQL, do:

    make maintainer-clean
    . /path/to/new/.bashrc.whatever

When compiling PostgreSQL, here's a handy-ish configure invocation:

    ./configure \
        --prefix=$PG_PREFIX \
        --with-pgport=$PGPORT \
        --with-perl \
        --with-libxml \
        --enable-debug \
        --enable-cassert

If you have ccache installed, you may also want to do

    CC="ccache gcc" ./configure ...

To avoid confusion, you also might want to un-symlink plparrot from
beneath the other source tree and symlink it under contrib/ in the
source tree you want to use.