A fix for Bug#6273 "building fails on link": we should not use

CLIENT_LIBS in mysql_config as CLIENT_LIBS point to builddir when
we use the bundled zlib.


acinclude.m4:
  Extend MYSQL_CHECK_ZLIB_WITH_COMPRESS m4 macro to substitute ZLIB_DEPS -
  this is a special version of ZLIB_LIBS to use in mysql_config
configure.in:
  Remove NON_THREADED_CLIENT_LIBS which weren't really 
  NON_THREADED_CLIENT_LIBS and use NON_THREADED_LIBS instead.
  AC_SUBST NON_THREADED_LIBS and STATIC_NSS_FLAGS as they're now
  needed inside mysql_config.sh
scripts/Makefile.am:
  Add STATIC_NSS_FLAGS, NON_THREADED_LIBS and ZLIB_DEPS to sed 
  substitution list.
scripts/mysql_config.sh:
  We can't use CLIENT_LIBS as in case when we use the bundled zlib
  it has a reference to $(top_builddir)/zlib.
  libs and libs_r now need to be specified explicitly.
zlib/Makefile.am:
  Install libz.la in case it's used by MySQL: this way we guarantee
  that paths printed by mysql_config are valid in all cases.

acinclude.m4

@@ -194,6 +194,8 @@ dnl Define zlib paths to point at bundled zlib
 AC_DEFUN([MYSQL_USE_BUNDLED_ZLIB], [
 ZLIB_INCLUDES="-I\$(top_srcdir)/zlib"
 ZLIB_LIBS="\$(top_builddir)/zlib/libz.la"
+dnl Omit -L$pkglibdir as it's always in the list of mysql_config deps.
+ZLIB_DEPS="-lz"
 zlib_dir="zlib"
 AC_SUBST([zlib_dir])
 mysql_cv_compress="yes"
@@ -235,8 +237,13 @@ dnl   $prefix/lib. If zlib headers or binaries weren't found at $prefix, the
 dnl   macro bails out with error.
 dnl 
 dnl If the library was found, this function #defines HAVE_COMPRESS
-dnl and configure variables ZLIB_INCLUDES (i.e. -I/path/to/zlib/include) and
-dnl ZLIB_LIBS (i. e. -L/path/to/zlib/lib -lz).
+dnl and configure variables ZLIB_INCLUDES (i.e. -I/path/to/zlib/include),
+dnl ZLIB_LIBS (i. e. -L/path/to/zlib/lib -lz) and ZLIB_DEPS which is
+dnl used in mysql_config and is always the same as ZLIB_LIBS except to
+dnl when we use the bundled zlib. In the latter case ZLIB_LIBS points to the
+dnl build dir ($top_builddir/zlib), while mysql_config must point to the
+dnl installation dir ($pkglibdir), so ZLIB_DEPS is set to point to
+dnl $pkglibdir.
 
 AC_DEFUN([MYSQL_CHECK_ZLIB_WITH_COMPRESS], [
 AC_MSG_CHECKING([for zlib compression library])
@@ -285,7 +292,11 @@ case $SYSTEM_TYPE in
         ;;
     esac
     if test "$mysql_cv_compress" = "yes"; then
+      if test "x$ZLIB_DEPS" = "x"; then
+        ZLIB_DEPS="$ZLIB_LIBS"
+      fi
       AC_SUBST([ZLIB_LIBS])
+      AC_SUBST([ZLIB_DEPS])
       AC_SUBST([ZLIB_INCLUDES])
       AC_DEFINE([HAVE_COMPRESS], [1], [Define to enable compression support])
     fi
@@ -1039,7 +1050,6 @@ AC_MSG_CHECKING(for OpenSSL)
       echo "You can't use the --all-static link option when using openssl."
       exit 1
     fi
-    NON_THREADED_CLIENT_LIBS="$NON_THREADED_CLIENT_LIBS $openssl_libs"
   else
     AC_MSG_RESULT(no)
 	if test ! -z "$openssl_includes"

configure.in

@@ -924,9 +924,11 @@ if test "$ac_cv_header_termio_h" = "no" -a "$ac_cv_header_termios_h" = "no"
 then
   AC_CHECK_FUNC(gtty, , AC_CHECK_LIB(compat, gtty))
 fi
-# We make a special variable for client library's to avoid including
-# thread libs in the client.
-NON_THREADED_CLIENT_LIBS="$LIBS $ZLIB_LIBS"
+
+# We make a special variable for non-threaded version of LIBS to avoid
+# including thread libs into non-threaded version of MySQL client library.
+# Later in this script LIBS will be augmented with a threads library.
+NON_THREADED_LIBS="$LIBS"
 
 AC_MSG_CHECKING([for int8])
 case $SYSTEM_TYPE in
@@ -1502,7 +1504,7 @@ then
   if test -f /usr/lib/libxnet.so -a "$SYSTEM_TYPE" = "sni-sysv4"
   then
     LIBS="-lxnet $LIBS"
-    NON_THREADED_CLIENT_LIBS="$NON_THREADED_CLIENT_LIBS -lxnet"
+    NON_THREADED_LIBS="-lxnet $NON_THREADED_LIBS"
     with_named_thread="-Kthread $LDFLAGS -lxnet"
     LD_FLAGS=""
     CFLAGS="-Kthread $CFLAGS"
@@ -2826,7 +2828,7 @@ dnl This probably should be cleaned up more - for now the threaded
 dnl client is just using plain-old libs.
 sql_client_dirs="libmysql strings regex client"
 linked_client_targets="linked_libmysql_sources"
-CLIENT_LIBS=$NON_THREADED_CLIENT_LIBS
+
 if test "$THREAD_SAFE_CLIENT" != "no"
 then
   sql_client_dirs="libmysql_r $sql_client_dirs"
@@ -2834,9 +2836,11 @@ then
   AC_DEFINE([THREAD_SAFE_CLIENT], [1], [Should be client be thread safe])
 fi
 
-CLIENT_LIBS="$CLIENT_LIBS $STATIC_NSS_FLAGS"
+CLIENT_LIBS="$NON_THREADED_LIBS $openssl_libs $ZLIB_LIBS $STATIC_NSS_FLAGS"
 
 AC_SUBST(CLIENT_LIBS)
+AC_SUBST(NON_THREADED_LIBS)
+AC_SUBST(STATIC_NSS_FLAGS)
 AC_SUBST(sql_client_dirs)
 AC_SUBST(linked_client_targets)
 

scripts/Makefile.am

@@ -140,6 +140,9 @@ SUFFIXES = .sh
 	  -e 's!@''IS_LINUX''@!@IS_LINUX@!' \
 	  -e "s!@""CONF_COMMAND""@!@CONF_COMMAND@!" \
 	  -e 's!@''MYSQLD_USER''@!@MYSQLD_USER@!' \
+	  -e 's!@''STATIC_NSS_FLAGS''@!@STATIC_NSS_FLAGS@!' \
+	  -e 's!@''NON_THREADED_LIBS''@!@NON_THREADED_LIBS@!' \
+	  -e 's!@''ZLIB_DEPS''@!@ZLIB_DEPS@!' \
 	  -e "s!@MAKE@!$(MAKE)!" \
 	$< > $@-t
 	@CHMOD@ +x $@-t

scripts/mysql_config.sh

@@ -82,13 +82,14 @@ version='@VERSION@'
 socket='@MYSQL_UNIX_ADDR@'
 port='@MYSQL_TCP_PORT@'
 ldflags='@LDFLAGS@'
-client_libs='@CLIENT_LIBS@'
 
 # Create options
 
-libs="$ldflags -L$pkglibdir -lmysqlclient $client_libs"
+libs="$ldflags -L$pkglibdir -lmysqlclient @ZLIB_DEPS@ @NON_THREADED_LIBS@"
+libs="$libs @openssl_libs@ @STATIC_NSS_FLAGS@"
 libs=`echo "$libs" | sed -e 's;  \+; ;g' | sed -e 's;^ *;;' | sed -e 's; *\$;;'`
-libs_r="$ldflags -L$pkglibdir -lmysqlclient_r @LIBS@ @ZLIB_LIBS@ @openssl_libs@"
+
+libs_r="$ldflags -L$pkglibdir -lmysqlclient_r @ZLIB_DEPS@ @LIBS@ @openssl_libs@"
 libs_r=`echo "$libs_r" | sed -e 's;  \+; ;g' | sed -e 's;^ *;;' | sed -e 's; *\$;;'`
 cflags="-I$pkgincludedir @CFLAGS@ " #note: end space!
 include="-I$pkgincludedir"

zlib/Makefile.am

@@ -16,7 +16,7 @@
 
 # Process this file with automake to create Makefile.in
 
-noinst_LTLIBRARIES=libz.la
+pkglib_LTLIBRARIES=libz.la
 
 noinst_HEADERS= crc32.h deflate.h inffast.h inffixed.h inflate.h \
 		inftrees.h trees.h zconf.h zlib.h zutil.h