[libvirt] [PATCHv2] maint: Correctly detect wether "gluster" cli tool is accessible

[Peter Krempa]

The configure definition previously always defined the GLUSTER_CLI macro
and thus the code needing it wasn't compiled out if the tool wasn't
accessible.
---

Notes:
    Version 2:
    Simplify check.

 configure.ac | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index e68f5f6..52c50df 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1939,8 +1939,10 @@ AM_CONDITIONAL([WITH_STORAGE_GLUSTER], [test "$with_storage_gluster" = "yes"])
 if test "$with_storage_fs" = "yes" ||
    test "$with_storage_gluster" = "yes"; then
   AC_PATH_PROG([GLUSTER_CLI], [gluster], [], [$PATH:/sbin:/usr/sbin])
-  AC_DEFINE_UNQUOTED([GLUSTER_CLI], ["$GLUSTER_CLI"],
-    [Location or name of the gluster command line tool])
+  if test "x$GLUSTER_CLI" != "x"; then
+      AC_DEFINE_UNQUOTED([GLUSTER_CLI], ["$GLUSTER_CLI"],
+        [Location or name of the gluster command line tool])
+  fi
 fi

 LIBPARTED_CFLAGS=
-- 
1.9.1