sane.ds: Use 'sane-config --ldflags'.

configure

@@ -13031,6 +13031,7 @@ fi
 if test "$sane_devel" != "no" -a "x$with_sane" != "xno"
 then
     ac_sane_incl="`$sane_devel --cflags`"
+    ac_sane_libs="`$sane_devel --ldflags`"
     ac_save_CPPFLAGS="$CPPFLAGS"
     CPPFLAGS="$CPPFLAGS $ac_sane_incl"
     if test "${ac_cv_header_sane_sane_h+set}" = set; then
@@ -13170,7 +13171,7 @@ if test "${ac_cv_lib_soname_sane+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_soname_save_LIBS=$LIBS
-LIBS="-lsane  $LIBS"
+LIBS="-lsane $ac_sane_libs $LIBS"
   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF

configure.ac

@@ -920,10 +920,11 @@ AC_CHECK_PROG(sane_devel,sane-config,sane-config,no)
 if test "$sane_devel" != "no" -a "x$with_sane" != "xno"
 then
     ac_sane_incl="`$sane_devel --cflags`"
+    ac_sane_libs="`$sane_devel --ldflags`"
     ac_save_CPPFLAGS="$CPPFLAGS"
     CPPFLAGS="$CPPFLAGS $ac_sane_incl"
     AC_CHECK_HEADER(sane/sane.h,
-        [WINE_CHECK_SONAME(sane,sane_init,[AC_SUBST(SANEINCL,"$ac_sane_incl")])])
+        [WINE_CHECK_SONAME(sane,sane_init,[AC_SUBST(SANEINCL,"$ac_sane_incl")],,[$ac_sane_libs])])
     CPPFLAGS="$ac_save_CPPFLAGS"
 fi
 WINE_NOTICE_WITH(sane,[test "x$ac_cv_lib_soname_sane" = "x"],