Re: [RFC] building postgres with meson - v12

I found that the perl test modules are not installed.  See attached 
patch to correct this.

To the patches:

4e15ee0e24 Don't hardcode tmp_check/ as test directory for tap tests
1a3169bc3f Split TESTDIR into TESTLOGDIR and TESTDATADIR

It's a bit weird that the first patch changes the meaning of TESTDIR
and the second patch removes it.  Maybe these patches should be
squashed together?


96d1d0a0cf meson: prereq: Extend gendef.pl in preparation for meson

ok


581721fa99 meson: prereq: Add src/tools/gen_export.pl

Still wondering about the whitespace changes I reported recently, but
that can also be fine-tuned later.


4245cc888e meson: prereq: Refactor PG_TEST_EXTRA logic in autoconf build

ok


3afe803e0f meson: prereq: Fix warning compat_informix/rnull.pgc with msvc

ok


ae7733f46c meson: prereq: Move darwin sysroot determination into 
separate file

ok


a1fb97a81b meson: Add meson based buildsystem

I'm not a fan of all this business to protect the two build systems
from each other.  I don't like the build process touching a file under
version control every time.  How necessary is this?  What happens
otherwise?

conversion_helpers.txt: should probably be removed now.

doc/src/sgml/resolv.xsl: I don't understand what this is doing.  Maybe
at least add a comment in the file.

src/common/unicode/meson.build: The comment at the top of the file
should be moved next to the files it is describing (similar to how it
is in the makefile).  I don't see CLDR_VERSION set anywhere.  Is that
part implemented?

src/port/win32ver.rc.in: This is redundant with src/port/win32ver.rc.
(Note that the latter is also used as an input file for text
substitution.  So having another file named *.in next to it would be
super confusing.)

src/tools/find_meson: Could use a brief comment what it does.

src/tools/pgflex: Could use a not-brief comment about what it does,
why it's needed.  Also a comment where it's used.  Also run this
through pycodestyle.

src/tools/rcgen: This is connected with the comment on win32ver.rc.in
above.  We already have this equivalent code in
src/makefiles/Makefile.win32.  Let's figure out a way to share this
code.  (It could be a Perl script, which is already required on
Windows.)  Also pycodestyle.

src/tools/testwrap: also documentation/comments/pycodestyle


cd193eb3e8 meson: ci: Build both with meson and as before

I haven't reviewed this one in detail.  Maybe add a summary in the
commit message, like these are the new jobs, these are the changes to
existing jobs.  It looks like there is more in there than just adding
a few meson jobs.


If the above are addressed, I think this will be just about at the
point where the above patches can be committed.

Everything past these patches I'm mentally postponing right now.