Re: Build issue with postgresql 17 undefined reference to `pg_encoding_to_char' and `pg_char_to_encoding'

Just for reference in case anyone else who utilizes static linking for any
reason hits upon this issue, here is a working Dockerfile for libpq /
postgresql 17

FROM postgres:17.0-alpine3.20 AS builder
USER root
WORKDIR /app
RUN apk update && apk add --no-cache --update-cache \
openssl-libs-static \
libevent-static \
libxml2-static \
libedit-static \
libxslt-static \
sqlite-static \
openldap-dev \
libxslt-dev \
libxml2-dev \
libedit-dev \
openssl-dev \
zstd-static \
zlib-static \
lz4-static \
e2fsprogs \
keyutils \
zstd-dev \
zlib-dev \
gdbm-dev \
clang17 \
lz4-dev \
libldap \
bison \
curl \
perl \
make

COPY <<EOF ./main.cpp
#include<libpq-fe.h>
int main(){return PQconnectdb("")==NULL;}
EOF

ARG KRB5=1.21.3
ARG KRB5MAJMIN=1.21
RUN curl -L https://kerberos.org/dist/krb5/$KRB5MAJMIN/krb5-$KRB5.tar.gz
| tar xzf -
RUN cd krb5-$KRB5/src && \
./configure && make && make install && \
./configure --disable-shared --enable-static && make && make install

ARG SASL=2.1.28
RUN curl -L https://github.com/cyrusimap/cyrus-sasl/releases/download/cyrus-sasl-$SASL/cyrus-sasl-$SASL.tar.gz
| tar xzf -
RUN cd cyrus-sasl-$SASL && ./configure --enable-static && make && make install

RUN clang++ -static -o main main.cpp \
-L/usr/local/lib -lpq -lpgcommon_shlib -lpgport_shlib \
-lldap -lsasl2 -lssl -lcrypto -llber \
-lgssapi_krb5 \
-lkrb5 -lk5crypto -lcom_err -lkrb5support \
-lgdbm