Set CPPFLAGS
Set CPPFLAGS

Postgres requires ANDROIDAPI to be set in CPPFLAGS or it will use the symbols
from the latest library version, not the target library version.

TIL: CPPFLAGS means C PreProcessor flags (not to confuse with CPlusPlus)

opengisch/OSGeo4A,opengisch/OSGeo4A,opengisch/OSGeo4A