This makes sure we include it when expected, alongside the man pages,
and the test cases, and do not accidentally break the ABI if the system
starts providing such interface.
AC_SYS_LARGEFILE in configure.ac is setting needed defines to make
64bit off_t on relevant platforms.
Fixes build on musl:
| src/funopen.c:68:28: error: unknown type name 'off64_t'; did you mean 'off_t'?
| funopen_seek(void *cookie, off64_t *offset, int whence)
| ^~~~~~~
| off_t
Closes: !24
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
This function cannot be easily and (more importantly) correctly ported
without cooperation from the libc stdio layer. We already document that
users should be prepared to have the function not available on some
platforms and that they should ideally switch their code to other
more portable and better interfaces.
Instead of making the build fail, and requiring porters to add
exceptions for something that most probably cannot be ported correctly
anyway, simply print a warning and let it build. This will not be a
regression because on those systems libbsd would have never been built
before.
Prompted-by: Jens Finkhaeuser <jens@finkhaeuser.de>
This is a wrapper over the glibc fopencookie() function.
We diverge from the FreeBSD, OpenBSD and DragonFlyBSD declarations,
because seekfn() there wrongly uses fpos_t, assuming it's an integral
type, and any code using that on a system where fpos_t is a struct
(such as GNU-based systems or NetBSD) will fail to build. In which case,
as the code has to be modified anyway, we might just as well use the
correct declaration.
