Support deterministic builds

[joaohf]

Summary

Prepare couchdb to support deterministic builds.

Desired Behaviour

For same use cases deterministic build is necessary. Erlang 25 supports that via compile flags like:

export ERL_COMPILER_OPTIONS="deterministic"

In fact, when setting ERL_COMPILER_OPTIONS to deterministic the couchdb build as expected. However a few things should be fixed:

WARNING: couchdb-3.3.2-r0 do_package_qa: QA Issue: File /opt/couchdb/lib/couch-3.3.2/priv/couch_js/86/util.d in package couchdb contains reference to TMPDIR
File /opt/couchdb/lib/couch-3.3.2/priv/couch_js/86/main.d in package couchdb contains reference to TMPDIR
File /opt/couchdb/lib/couch-3.3.2/priv/couch_ejson_compare/couch_ejson_compare.d in package couchdb contains reference to TMPDIR
File /opt/couchdb/releases/RELEASES in package couchdb contains reference to TMPDIR [buildpaths]

I'm building couchdb using Yocto Project and there is a quality assurance step which verifies if all installed files do not have references to the build host paths. It looks like the file: /opt/couchdb/releases/RELEASES has some build paths inside the file.

The Makefile says to install the output from rel/couchdb into the destination folder:

# target: install- install CouchDB :)
install: release
        @echo
        @echo "Notice: There is no 'make install' command for CouchDB 2.x+."
        @echo
        @echo "    To install CouchDB into your system, copy the rel/couchdb"
        @echo "    to your desired installation location. For example:"
        @echo "    cp -r rel/couchdb /usr/local/lib"

But installing everything from rel/couchdb also brings some compilation files (.d, .o), I think these files is not necessary to be installed:

File /opt/couchdb/lib/couch-3.3.2/priv/couch_js/86/main.d in package couchdb contains reference to TMPDIR
File /opt/couchdb/lib/couch-3.3.2/priv/couch_ejson_compare/couch_ejson_compare.d in package couchdb contains reference to TMPDIR

[nickva]

Thanks for reaching out @joaohf and for giving a it a try to build CouchDB with a deterministic option. We could probably even make that a configure option or even the default.

Good find about .d .o files we do not need to install those with the release. It's an omission on our part.