I’m writing a C extension and have successfully based my Makefile on existing
templates. This conveniently hides the details of the full Makefile provided by
"pg_config --pgxs”. Which variable would be the appropriate one to specify the
‘-std=c99’ compiler flag? I’ve tried many and still get warnings that this flag
should suppress (specifically, "ISO C90 forbids mixed declarations and code”).
These are the variables I currently define:
PG_CPPFLAGS (this one seemed like the right place)
A workaround has been:
OBJS = file1.o file2.o CPPFLAGS+=-Wdeclaration-after-statement
but it’s not exactly the same thing.