The original code expected this to be set by running configure.
We'll just manually set it here for now. This isn't as portable
as if we were doing some compile-time examination of the current
system, but I don't need portability now.
When someone comes along that wants to port notmuch to another
system, they will already have all the #ifdefs in place and
will simply need to add the appropriate machinery to set the
defines.
This change is gratuitous. For now, notmuch is still linking
against glib, so I don't have any requirement to remove this,
(unlike the last few changes where good taste really did
require the changes).
The motivation here is two-fold:
1. I'm considering switching away from all glib-based allocation
soon so that I can more easily verify that the memory management
is solid. I want valgrind to say "no leaks are possible" not
"there is tons of memory still allocated, but probably reachable
so who knows if there are leaks or not?". And glib seems to make
that impossible.
2. I don't think there's anything performance-sensitive about the
allocation here. (In fact, if there is, then the right answer
would be to do this parsing without any allocation whatsoever.)
While this is surely one of the most innocent typedefs, it still
annoys me to have basic types like 'int' re-defined like this.
It just makes it harder to copy the code between projects, with
very little benefit in readability.
For readability, predicate functions and variables should be
obviously Boolean-natured by their actual *names*.
That's got to be one of the hardest macro names to read, ever,
(it's phrased with an implicit negative in the condition,
rather than something simple like "assert").
Plus, it's evil, since it's a macro with a return in it.
And finally, it's actually *longer* than just typing "if"
and "return". So what's the point of this ugly idiom?
We can't rely on any gmime-internal headers, (and fortunately we
don't need to). We also aren't burdened with any autconf machinery
so don't reference any of that.
We're sucking in one gmime implementation file just to get the
piece that parses an RFC 822 date, because I don't want to go
through the pain of replicating that.
