MongoDB 4.4+ scons build tool does not install files in destdir/prefix


I do not understand how scons works with 4.4, it does not install the files in DESTDIR/PREFIX.

Here’s the command I run:

PREFIX=/usr DESTDIR=/tmp/destdir python3 which scons --disable-warnings-as-errors install-servers

Which ends up in:

Install file: “build/opt/mongo/mongod” as “build/install/bin/mongod”
Install file: “build/opt/mongo/mongos” as “build/install/bin/mongos”
scons: done building targets.

That’s not what I asked for, I expect mongod to be installed in /tmp/destdir/usr/bin/mongod, can you help me ?