portable: add siphash implementation Siphash is being used in place of murmurhash for object-id set as this is faster. However, this isn't really seen much in the non-BSD userspace, so provide an implementation for it portably, if one isn't found.

portable: support NetBSD This adds support for NetBSD, using the following external dependencies: libuuid ncursesw There is no CI (yet) as enabling that on Cirrus-CI requires some work, so for now, these builds will be run manually before releases. The test suite will also need tweaking to be fully supported but the key tests are supported for now.

portable: include support for MacOS This adds support for MacOS (Monteray onward, although should work on older MacOSes). The BSD wrapper for poll/ppoll has been lifted from the work the folks over at OpenSSH have done -- thanks!

portable: add support for landlock landlock is a new set of linux APIs that is conceptually similar to unveil(2): the idea is to restrict what a process can do on a specified part of the filesystem. There are some differences in the behaviour: the major one being that the landlock ruleset is inherited across execve(2). This just restricts the libexec helpers by completely revoking ANY filesystem access; after all they are the biggest attack surface. got send/fetch/clone *may* end up spawning ssh(1), so at the moment is not possible to landlock the main process. From Omar Polo.

portable: propagate AM_CFLAGS/AM_CPPFLAGS Allow for warnings via AM_CFLAGS in a common Makefile, and let those values propagate to all other Makefiles. Currently the more useful checks are disabled until upstream changes are made to reduce warnings. While here, also fix the version string to remove quotes.

portable: compat: remove unused files Fix up a weird automerge where some files referenced are either not used any more or have already been included.

portable: initial Linux compilation This commit modifies the GoT main branch to be able to compile it under linux.

libexec: honour libeexec path for helpers libexec is a common path which is understood by autotools, and should be honoured. Patch from Christian "naddy" Weisgerber

portable: add FreeBSD support This adds the capability to compile got-portable on FreeBSD.

compat: Makefile: add missing trailing backslash The uuid.c source file was missing a trailing backslash.

dist: rework files for distcheck Rather than having a toplevel EXTRA_DIST target in the toplevel Makefile.am file, move the relevant files to their own Makefile.am locations.

xmalloc: remove wrapper as no longer needed There is only one user which calls xrecallocarray: ibuf_realloc(). We already provide recallocarray() in the compat layer so ibuf_realloc() can simply call recallocarray() directly, as it does on OpenBSD. OK thomas.adam

automake: Fix path to libexec directory The got_lib_privsep.h header expects the path to the libexec directory to be called GOT_LIBEXECDIR. At the moment it always falls back to using /usr/libexec. Fix what looks to be a typo.

portable: initial Linux compilation This commit modifies the GoT main branch to be able to compile it under linux.