Allow building with --disable-threads.
* src/posix-lock-obj.h (LOCK_ABI_NOT_AVAILABLE): New. (LOCK_ABI_VERSION): Define depending on USE_POSIX_THREADS. (_gpgrt_lock_t) [!USE_POSIX_THREADS]: Do not define the union. * src/gen-posix-lock-obj.c: Take care of USE_POSIX_THREADS. * src/posix-lock.c (_gpgrt_lock_init, _gpgrt_lock_lock) (_gpgrt_lock_trylock, _gpgrt_lock_unlock) (_gpgrt_lock_destroy): Return success for a no-threads version. * tests/t-lock.c: Disable tests if threads are not available. * src/mkheader.c (main): Add NO-THREADS to the printed comment. * configure.ac: Show NO-TRHEADS in the final summary.
Warning: Using --disable-threads creates a different ABI which we
can't encode in the the cpu-vendor-os triplet. The run time checks
should detect this and abort the process.
- Signed-off-by: Werner Koch <wk@gnupg.org>