Additional #ifdefing around _XOPEN_SOURCE. Ticket #2681. (CVS 4452)

FossilOrigin-Name: eb5d78451ee2a5d8480537530f30fbb305bf7632

manifest

@@ -1,5 +1,5 @@
-C Document\sthat\sEND\sTRANSACTION\sis\san\salias\sfor\sCOMMIT.\s\sTicket\s#2656\s(CVS\s4451)
+C Additional\s#ifdefing\saround\s_XOPEN_SOURCE.\s\sTicket\s#2681.\s(CVS\s4452)
-D 2007-10-01T17:45:40
+D 2007-10-01T17:47:00
 F Makefile.in cbfb898945536a8f9ea8b897e1586dd1fdbcc5db
 F Makefile.linux-gcc 65241babba6faf1152bf86574477baab19190499
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -132,7 +132,7 @@ F src/server.c 087b92a39d883e3fa113cae259d64e4c7438bc96
 F src/shell.c 82089379833e361ba8a2ae65316a2173785300c0
 F src/sqlite.h.in 60d1a884f49304787b07864ceba31e6df93a5a7c
 F src/sqlite3ext.h a93f59cdee3638dc0c9c086f80df743a4e68c3cb
-F src/sqliteInt.h cb503be6d432493c877674e129369d928441bc0a
+F src/sqliteInt.h 8fb50cf69b235dfe7f3b604d4d219a9726b8478c
 F src/sqliteLimit.h 1bcbbdfa856f8b71b561abb31edb864b0eca1d12
 F src/table.c 1aeb9eab57b4235db86fe15a35dec76fb445a9c4
 F src/tclsqlite.c 9659ec914abfdb35e184eee908d07eba11a39018
@@ -580,7 +580,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P 0bbf654b6745058a705ef5c320bdd5fb06735271
+P ebe3e6913c35bebb0e78dac995527d5da97a9377
-R dbb20b7521eafe586ad12791eba4eb3d
+R cfc075825147a4ccdcc8d892e7e61dcc
 U drh
-Z 4ce0ec44aa7cb02f4e0a539e35574c34
+Z fd115abb078ffce00ef35ed41bd4c589

manifest.uuid

@@ -1 +1 @@
-ebe3e6913c35bebb0e78dac995527d5da97a9377
+eb5d78451ee2a5d8480537530f30fbb305bf7632

src/sqliteInt.h

@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.611 2007/10/01 14:30:15 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.612 2007/10/01 17:47:00 drh Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -59,13 +59,32 @@
   extern int sqlite3MAX_LIKE_PATTERN_LENGTH;
 #endif
 
+
+/*
+** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
+** Older versions of SQLite used an optional THREADSAFE macro.
+** We support that for legacy
+*/
+#if !defined(SQLITE_THREADSAFE)
+#if defined(THREADSAFE)
+# define SQLITE_THREADSAFE THREADSAFE
+#else
+# define SQLITE_THREADSAFE 1
+#endif
+#endif
+
 /*
 ** We need to define _XOPEN_SOURCE as follows in order to enable
 ** recursive mutexes on most unix systems.  But Mac OS X is different.
 ** The _XOPEN_SOURCE define causes problems for Mac OS X we are told,
 ** so it is omitted there.  See ticket #2673.
+**
+** Later we learn that _XOPEN_SOURCE is poorly or incorrectly
+** implemented on some systems.  So we avoid defining it at all
+** if it is already defined or if it is unneeded because we are
+** not doing a threadsafe build.  Ticket #2681.
 */
-#ifndef __MACOS__
+#if !defined(_XOPEN_SOURCE) && !defined(__MACOS__) && SQLITE_THREADSAFE
 #  define _XOPEN_SOURCE 500  /* Needed to enable pthread recursive mutexes */
 #endif
 
@@ -84,19 +103,6 @@
 # define NDEBUG 1
 #endif
 
-/*
-** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
-** Older versions of SQLite used an optional THREADSAFE macro.
-** We support that for legacy
-*/
-#if !defined(SQLITE_THREADSAFE)
-#if defined(THREADSAFE)
-# define SQLITE_THREADSAFE THREADSAFE
-#else
-# define SQLITE_THREADSAFE 1
-#endif
-#endif
-
 /*
 ** These #defines should enable >2GB file support on Posix if the
 ** underlying operating system supports it.  If the OS lacks