[PATCH 3/3] lib: add built_with handling for XAPIAN_DB_RETRY_LOCK

[David Bremner]

This support will be present only if the appropriate version of xapian
is available _and_ the user did not disable the feature when
building. So there really needs to be some way for the user to check.
---
 lib/built-with.c    | 2 ++
 notmuch-config.c    | 3 +++
 test/T030-config.sh | 1 +
 test/T040-setup.sh  | 3 ++-
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/built-with.c b/lib/built-with.c
index 635ed3b..2f1f0b5 100644
--- a/lib/built-with.c
+++ b/lib/built-with.c
@@ -28,6 +28,8 @@ notmuch_built_with (const char *name)
 	return HAVE_XAPIAN_COMPACT;
     } else if (STRNCMP_LITERAL (name, "field_processor") == 0) {
 	return HAVE_XAPIAN_FIELD_PROCESSOR;
+    } else if (STRNCMP_LITERAL (name, "retry_lock") == 0) {
+	return HAVE_XAPIAN_DB_RETRY_LOCK;
     } else {
 	return FALSE;
     }
diff --git a/notmuch-config.c b/notmuch-config.c
index de9a8a4..e5d42a0 100644
--- a/notmuch-config.c
+++ b/notmuch-config.c
@@ -911,6 +911,9 @@ _notmuch_config_list_built_with ()
     printf("%sfield_processor=%s\n",
 	   BUILT_WITH_PREFIX,
 	   notmuch_built_with ("field_processor") ? "true" : "false");
+    printf("%sretry_lock=%s\n",
+	   BUILT_WITH_PREFIX,
+	   notmuch_built_with ("retry_lock") ? "true" : "false");
 }
 
 static int
diff --git a/test/T030-config.sh b/test/T030-config.sh
index b8d5a86..0915abd 100755
--- a/test/T030-config.sh
+++ b/test/T030-config.sh
@@ -59,6 +59,7 @@ foo.string=this is another string value
 foo.list=this;is another;list value;
 built_with.compact=something
 built_with.field_processor=something
+built_with.retry_lock=something
 EOF
 test_expect_equal_file EXPECTED OUTPUT
 
diff --git a/test/T040-setup.sh b/test/T040-setup.sh
index be2f0db..021f2d0 100755
--- a/test/T040-setup.sh
+++ b/test/T040-setup.sh
@@ -31,6 +31,7 @@ search.exclude_tags=baz;
 maildir.synchronize_flags=true
 crypto.gpg_path=gpg
 built_with.compact=something
-built_with.field_processor=something"
+built_with.field_processor=something
+built_with.retry_lock=something"
 
 test_done
-- 
2.8.1