[libvirt] [PATCH] Fix compilation with gcrypt < 1.4.2

[Matthias Bolte]

Commit 33a198c1f6a4a1bc7f34d50a31032e03bec10fee increased the gcrypt
version requirement to 1.4.2 because the GCRY_THREAD_OPTION_VERSION
define was added in this version.

The configure script doesn't check for the gcrypt version. To support
gcrypt versions < 1.4.2 change the virTLSThreadImpl initialization
to use GCRY_THREAD_OPTION_VERSION only if it's defined.
---
 src/libvirt.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/libvirt.c b/src/libvirt.c
index cad33c2..937cdb4 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -291,7 +291,12 @@ static int virTLSMutexUnlock(void **priv)
 }
 
 static struct gcry_thread_cbs virTLSThreadImpl = {
+    /* GCRY_THREAD_OPTION_VERSION was added in gcrypt 1.4.2 */
+#ifdef GCRY_THREAD_OPTION_VERSION
     (GCRY_THREAD_OPTION_PTHREAD | (GCRY_THREAD_OPTION_VERSION << 8)),
+#else
+    GCRY_THREAD_OPTION_PTHREAD,
+#endif
     NULL,
     virTLSMutexInit,
     virTLSMutexDestroy,
-- 
1.6.0.4