Generate a Makefile.global that's complete enough for PGXS to work for some extensions. It is likely that this compatibility layer will not suffice for every extension and not all platforms - we can expand it over time.
This allows extensions to use a single buildsystem across all the supported postgres versions. Once all supported PG versions support meson, we can remove the compatibility layer.
5bdd0cfb91 meson: Add basic PGXS compatibility
meson.build | 8 +-
meson_options.txt | 3 +
src/common/meson.build | 4 +-
src/include/meson.build | 10 +-
src/makefiles/meson.build | 260 ++++++++++++++++++++++++++++++++++++++++++++++
src/meson.build | 37 +++++++
6 files changed, 311 insertions(+), 11 deletions(-)