Shared caches: fix and minor changes.

  * Fixed detection and use of C11 thread support: the C11 header is
    <threads.h>, not <thread.h>.
  * Renamed WANT_SHARED_CACHE to MPFR_WANT_SHARED_CACHE for consistency
    with the other MPFR_WANT_* macros.
  * Added MPFR_THREAD_LOCK_METHOD macro, giving the thread locking
    method as a string (when shared caches are enabled).
  * doc/README.dev: documented 4 macros for shared caches.
  * tests/tversion.c: output MPFR_WANT_SHARED_CACHE and
    MPFR_THREAD_LOCK_METHOD information.
(merged changeset r12937 from the trunk)

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/branches/4.0@12938 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 9 insertions, 0 deletions

diff --git a/doc/README.dev b/doc/README.dev
index d820a2dbd..2aee84045 100644
--- a/doc/README.dev
+++ b/doc/README.dev
@@ -427,6 +427,9 @@ List of macros used for building MPFR (also used for checking):
 + MPFR_HAVE_INTMAX_MAX: Define if the INTMAX_MAX macro works correctly
                         (if 'intmax_t' is supported).
 
++ MPFR_HAVE_C11_LOCK:   Define if C11 threads are supported.
++ HAVE_PTHREAD:         Define if pthread is available.
+
 Format of long double.
 + HAVE_LDOUBLE_IS_DOUBLE:               IEEE double.
 + HAVE_LDOUBLE_IEEE_EXT_BIG:            IEEE extended, big endian.
@@ -470,6 +473,12 @@ Format of long double.
 + MPFR_USE_C11_THREAD_SAFE:
                         Define to implement TLS in the C11 way.
 
++ MPFR_WANT_SHARED_CACHE:
+                        Define to have caches shared by all threads.
++ MPFR_THREAD_LOCK_METHOD:
+                        When MPFR_WANT_SHARED_CACHE is defined, this macro
+                        gives the thread locking method (string).
+
 + MPFR_HAVE_NORETURN:   Define if the _Noreturn function specifier is
                         supported.
 + MPFR_HAVE_BUILTIN_UNREACHABLE: