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>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/posix-lock-obj.h b/src/posix-lock-obj.h
index 7714d3c..872e55a 100644
--- a/src/posix-lock-obj.h
+++ b/src/posix-lock-obj.h
@@ -20,15 +20,22 @@
 #ifndef POSIX_LOCK_OBJ_H
 #define POSIX_LOCK_OBJ_H
 
-#define LOCK_ABI_VERSION 1
+#define LOCK_ABI_NOT_AVAILABLE (-1)
+#if USE_POSIX_THREADS
+# define LOCK_ABI_VERSION 1
+#else
+# define LOCK_ABI_VERSION LOCK_ABI_NOT_AVAILABLE
+#endif
 
 typedef struct
 {
   long vers;
+#if USE_POSIX_THREADS
   union {
     pthread_mutex_t mtx;
     long *dummy;
   } u;
+#endif
 } _gpgrt_lock_t;