diff -Naur mysql-4.1.9/bdb/dist/aclocal/mutex.ac mysql-4.1.9.oden/bdb/dist/aclocal/mutex.ac
--- mysql-4.1.9/bdb/dist/aclocal/mutex.ac	2005-01-11 23:06:02.000000000 +0100
+++ mysql-4.1.9.oden/bdb/dist/aclocal/mutex.ac	2005-01-30 20:42:27.438264523 +0100
@@ -194,28 +194,31 @@
 # Try with and without the -lpthread library.  If the user specified we use
 # POSIX pthreads mutexes, and we fail to find the full interface, try and
 # configure for just intra-process support.
-if test "$db_cv_mutex" = no -o "$db_cv_mutex" = "posix_only"; then
-	AM_PTHREADS_SHARED("POSIX/pthreads")
-fi
-if test "$db_cv_mutex" = no -o \
-    "$db_cv_mutex" = "posix_only" -o "$db_cv_mutex" = "posix_library_only"; then
-	LIBS="$LIBS -lpthread"
-	AM_PTHREADS_SHARED("POSIX/pthreads/library")
-	LIBS="$orig_libs"
-fi
-if test "$db_cv_mutex" = "posix_only"; then
-	AM_PTHREADS_PRIVATE("POSIX/pthreads/private")
-fi
-if test "$db_cv_mutex" = "posix_only" -o \
-    "$db_cv_mutex" = "posix_library_only"; then
-	LIBS="$LIBS -lpthread"
-	AM_PTHREADS_PRIVATE("POSIX/pthreads/library/private")
-	LIBS="$orig_libs"
-fi
-
-if test "$db_cv_mutex" = "posix_only" -o \
-    "$db_cv_mutex" = "posix_library_only"; then
-	AC_MSG_ERROR([unable to find POSIX 1003.1 mutex interfaces])
+if test "$db_cv_pthreadsmutexes" = yes; then
+	if test "$db_cv_mutex" = no -o "$db_cv_mutex" = "posix_only"; then
+		AM_PTHREADS_SHARED("POSIX/pthreads")
+	fi
+	if test "$db_cv_mutex" = no -o \
+	    "$db_cv_mutex" = "posix_only" -o \
+	    "$db_cv_mutex" = "posix_library_only"; then
+		LIBS="$LIBS -lpthread"
+		AM_PTHREADS_SHARED("POSIX/pthreads/library")
+		LIBS="$orig_libs"
+	fi
+	if test "$db_cv_mutex" = "posix_only"; then
+		AM_PTHREADS_PRIVATE("POSIX/pthreads/private")
+	fi
+	if test "$db_cv_mutex" = "posix_only" -o \
+	    "$db_cv_mutex" = "posix_library_only"; then
+		LIBS="$LIBS -lpthread"
+		AM_PTHREADS_PRIVATE("POSIX/pthreads/library/private")
+		LIBS="$orig_libs"
+	fi
+
+	if test "$db_cv_mutex" = "posix_only" -o \
+	    "$db_cv_mutex" = "posix_library_only"; then
+		AC_MSG_ERROR([unable to find POSIX 1003.1 mutex interfaces])
+	fi
 fi
 
 # msemaphore: HPPA only
diff -Naur mysql-4.1.9/bdb/dist/aclocal/options.ac mysql-4.1.9.oden/bdb/dist/aclocal/options.ac
--- mysql-4.1.9/bdb/dist/aclocal/options.ac	2005-01-11 23:06:01.000000000 +0100
+++ mysql-4.1.9.oden/bdb/dist/aclocal/options.ac	2005-01-30 20:42:39.376229491 +0100
@@ -67,6 +67,16 @@
 	[db_cv_java="$enable_java"], [db_cv_java="no"])
 AC_MSG_RESULT($db_cv_java)
 
+AC_MSG_CHECKING(if --disable-pthreadsmutexes option specified)
+AC_ARG_ENABLE(pthreadsmutexes,
+	AC_HELP_STRING([--disable-pthreadsmutexes],
+	    [Do not use POSIX pthreads mutexes.]),, enableval="yes")
+db_cv_pthreadsmutexes="$enableval"
+case "$enableval" in
+ no) AC_MSG_RESULT(yes);;
+yes) AC_MSG_RESULT(no);;
+esac
+
 AC_MSG_CHECKING(if --enable-posixmutexes option specified)
 AC_ARG_ENABLE(posixmutexes,
 	[AC_HELP_STRING([--enable-posixmutexes],