Re: [PATCHES] earthdistance update for msvc

"Magnus Hagander" <mha@sollentuna.net> writes:
> A define is needed to expose the M_PI define from the system headers.

It seems like the other places where we depend on M_PI, we instead have

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif

Perhaps that's a better solution?

            regards, tom lane