Makefile.am:

  Conditionally link with libmysqlclient.la or libmysqlclient_r.la
configure.in:
  Corrected help text for --with-debug option
  Changed default to be with thread safe client
  Added THREAD_SAFE_CLIENT to be used in 'if' in make files


configure.in:
  Corrected help text for --with-debug option
  Changed default to be with thread safe client
  Added THREAD_SAFE_CLIENT to be used in 'if' in make files
client/Makefile.am:
  Conditionally link with libmysqlclient.la or libmysqlclient_r.la

client/Makefile.am

@@ -21,6 +21,13 @@ if HAVE_YASSL
 else
   yassl_dummy_link_fix=
 endif
+
+if THREAD_SAFE_CLIENT
+LIBMYSQLCLIENT_LA =		$(top_builddir)/libmysql_r/libmysqlclient_r.la
+else
+LIBMYSQLCLIENT_LA =		$(top_builddir)/libmysql/libmysqlclient.la
+endif
+
 #AUTOMAKE_OPTIONS =              nostdinc
 INCLUDES =			-I$(top_builddir)/include \
 				-I$(top_srcdir)/include \
@@ -50,11 +57,11 @@ mysqlbinlog_SOURCES =		mysqlbinlog.cc $(top_srcdir)/mysys/mf_tempdir.c \
 mysqlbinlog_LDADD =		$(LDADD) $(CXXLDFLAGS)
 mysqlslap_LDADD =		$(CXXLDFLAGS) $(CLIENT_THREAD_LIBS) \
 				@CLIENT_EXTRA_LDFLAGS@ \
-                                $(top_builddir)/libmysql_r/libmysqlclient_r.la \
+				$(LIBMYSQLCLIENT_LA) \
 				$(top_builddir)/mysys/libmysys.a 
 mysqlimport_LDADD =		$(CXXLDFLAGS) $(CLIENT_THREAD_LIBS) \
 				@CLIENT_EXTRA_LDFLAGS@ \
-                                $(top_builddir)/libmysql_r/libmysqlclient_r.la \
+				$(LIBMYSQLCLIENT_LA) \
 				$(top_builddir)/mysys/libmysys.a 
 mysqltestmanager_pwgen_SOURCES = mysqlmanager-pwgen.c 
 mysqltestmanagerc_SOURCES=	mysqlmanagerc.c $(yassl_dummy_link_fix)

configure.in

@@ -589,10 +589,10 @@ AC_ARG_WITH(named-curses-libs,
 
 # Make thread safe client
 AC_ARG_ENABLE(thread-safe-client,
-    [  --enable-thread-safe-client   
-                          Compile the client with threads.],
+    [  --disable-thread-safe-client   
+                          Compile the client without threads.],
     [ THREAD_SAFE_CLIENT=$enableval ],
-    [ THREAD_SAFE_CLIENT=no ]
+    [ THREAD_SAFE_CLIENT=yes ]
     )
 
 # compile with strings functions in assembler
@@ -1564,7 +1564,8 @@ then
 fi
 
 AC_ARG_WITH(debug,
-    [  --without-debug         Build a production version without debugging code],
+    [  --with-debug            Add debug code
+  --with-debug=full       Add debug code (adds memory checker, very slow)],
     [with_debug=$withval],
     [with_debug=no])
 if test "$with_debug" = "yes"
@@ -2472,6 +2473,8 @@ dnl client is just using plain-old libs.
 sql_client_dirs="strings regex mysys libmysql client"
 linked_client_targets="linked_libmysql_sources"
 
+AM_CONDITIONAL(THREAD_SAFE_CLIENT, test "$THREAD_SAFE_CLIENT" != "no")
+
 if test "$THREAD_SAFE_CLIENT" != "no"
 then
   sql_client_dirs="libmysql_r $sql_client_dirs"