Create SAGE_LOCAL directory hierarchy during "make", not "configure"

[mkoeppe]

./configure should not create the directory hierarchy under SAGE_LOCAL.

Normally this is the task of make install; but since our make already does the equivalent of "make install" (see #21479 and #21495 for discussion), we should do this during make.

. . .

A possible implementation would be to use the currently unused automake-generated build/make/Makefile-auto to do that by calling make -f Makefile-auto install during make.

CC: @jdemeyer

Component: build

Issue created by migration from https://trac.sagemath.org/ticket/21532

[embray]

comment:1

This also creates problems with $SAGE_SUDO and --prefix= set to a root-owned directory, since it effectively means we have to run ./configure as root. I agree it would be better to do in the Makefile, and run the relevant commands with $SAGE_SUDO.

[mkoeppe]

comment:3

Moving some tickets to 9.2. This is not a promise that I will be working on them.

[mkoeppe]

comment:5

Setting new milestone based on a cursory review of ticket status, priority, and last modification date.