From c1c2000c35ff39b09cb70fbdf66a107d3b17a674 Mon Sep 17 00:00:00 2001
From: Stephan Bergmann <sbergman@redhat.com>
Date: Wed, 12 Oct 2022 08:40:49 +0200
Subject: [PATCH] Fix missing #include <time.h>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

At least on recent Fedora 37 beta, building now failed with

> CLucene/document/DateTools.cpp:26:19: error: ‘gmtime’ was not declared in this scope
>    26 |         tm *ptm = gmtime(&secs);
>       |                   ^~~~~~

etc.

As it turns out, after 22f9d40320e3deeaa8d6aaa7a770077c20a21dae "git-svn-id:
https://clucene.svn.sourceforge.net/svnroot/clucene/branches/lucene2_3_2@2672
20ef185c-fe11-0410-a618-ba9304b01011" on 2008-06-26 had commented out
_CL_TIME_WITH_SYS_TIME in clucene-config.h.cmake as "not actually used for
anything", then cceccfb52917b5f4da447f1cf20c135952d41442 "Presenting DateTools
and deprecating DateField. DateTools still requires some testing and its own
unit testing" on 2008-06-29 had introduced this use of it (into then
src/CLucene/document/DateTools.H).  And apparently most build environments have
silently been happy ever since when the dead leading check for
_CL_TIME_WITH_SYS_TIME didn't include both <sys/time.h> and <time.h>, but the
following check for _CL_HAVE_SYS_TIME_H only included <sys/time.h> but not
<time.h>.
---
 src/shared/CLucene/clucene-config.h.cmake | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/shared/CLucene/clucene-config.h.cmake b/src/shared/CLucene/clucene-config.h.cmake
index bd8683a5..6fe0f92b 100644
--- a/src/shared/CLucene/clucene-config.h.cmake
+++ b/src/shared/CLucene/clucene-config.h.cmake
@@ -100,8 +100,7 @@ ${SYMBOL__T}
 //#cmakedefine _CL_STAT_MACROS_BROKEN
 
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
-//not actually used for anything...
-//#cmakedefine _CL_TIME_WITH_SYS_TIME  1 
+#cmakedefine _CL_TIME_WITH_SYS_TIME  1 
 
 /* Define that we will be using -fvisibility=hidden, and 
  * make public classes visible using __attribute__ ((visibility("default")))
-- 
2.37.3