out-of-tree build not working under mingw

[robe]

Not sure if it's just my setup or all mingw64, but I was trying to build with out-of-tree, to debug the issue I caused with out-of-tree on my commit for #5195.

However my build always fails before it gets to that point:

with:

/mingw64/bin/cpp -traditional-cpp -w -P -I./../../postgis /projects/postgis/postgis-git/extensions/postgis/../../postgis/postgis.sql.in | grep -v '^#' | \
/usr/bin/perl -lpe \
        "s'MODULE_PATHNAME'\$libdir/postgis-3.3'g" \
        | /usr/bin/perl -pe 's/BEGIN\;//g ; s/COMMIT\;//g' > sql/postgis_for_extension.sql
/bin/sh: line 4: sql/postgis_for_extension.sql: No such file or directory
<built-in>: fatal error: when writing output to : Invalid argument
compilation terminated.
make[2]: *** [Makefile:138: sql/postgis_for_extension.sql] Error 1
make[2]: Leaving directory '/projects/postgis/tmp/postgis-build/3.3/extensions/postgis'
make[1]: *** [Makefile:29: all] Error 1
make[1]: Leaving directory '/projects/postgis/tmp/postgis-build/3.3/extensions'
make: *** [GNUmakefile:24: all] Error 1

[robe]

strk noted my sql folders (the ones in extensions\postgis\sql and also all extension subfolder might be present in my repo folder. After deleting all of those it seems to work.

So closing this out and will reopen if I still have issues

[robe]

FWIW also had to delete extensions/postgis_tiger_geocoder/expected folder