Re: Compiling on Termux

On Sat, Dec 22, 2018 at 07:03:32AM +1100, Thomas Munro wrote:
> On Sat, Dec 22, 2018 at 5:56 AM David Fetter <david(at)fetter(dot)org> wrote:
> >
> > Folks,
> >
> > I'm trying to compile master (c952eae52a33069e2e92d34f217b43d0eca3d7de)
> > on Termux, using the supplied settings, as follows.
> >
> > pg_config --configure | xargs ./configure > configure.out 2>configure.err
> > make -j 4 > make.out 2> make.err
> >
> > There appears to be some confusion somewhere about sync_file_range,
> > namely that it's found by ./configure and then not found in make.
> >
> > What should I be poking at to make this work?
>
> Apparently your libc (or something else) defines the function so the
> configure test passes, but your <fcntl.h> doesn't declare it so we
> can't use it. I guess Termux supplies the headers but your Android
> supplies the libraries, so there may be sync issues. I'd try hunting
> around for declarations with something like find /usr/include -name
> '*.h' | xargs grep sync_file_range. Here's an interesting similar
> case:
>
> https://github.com/termux/termux-packages/issues/899
>
> That talks about using -D__ANDROID_API__=23 (or presumably higher) to
> make sure that sigtimedwait is exposed by signal.h. Something similar
> may be afoot here.

That worked perfectly...to expose the next issue, namely that at least
part of the System-V IPC mechanisms have been left out. Do we support
other systems where this is true?

Best,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778

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