Fix interlibrary dependencies in target shared library builds

config/lib-link.m4

 # lib-link.m4 serial 4 (gettext-0.12)
 dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program
 dnl that contains a configuration script generated by Autoconf, under
 dnl the same distribution terms as the rest of that program.
 
 dnl From Bruno Haible.
 
@@ skipping 332 matching lines @@
               dnl   1. if it's the standard /usr/include,
               dnl   2. if it's /usr/local/include and we are using GCC on Linux,
               dnl   3. if it's already present in $CPPFLAGS or the already
               dnl      constructed $INCNAME,
               dnl   4. if it doesn't exist as a directory.
               if test "X$additional_includedir" != "X/usr/include"; then
                 haveit=
                 if test "X$additional_includedir" = "X/usr/local/include"; then
                   if test -n "$GCC"; then
                     case $host_os in
-                      linux*) haveit=yes;;
+                      linux* | nacl*) haveit=yes;;
                     esac
                   fi
                 fi
                 if test -z "$haveit"; then
                   for x in $CPPFLAGS $INC[]NAME; do
                     AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
                     if test "X$x" = "X-I$additional_includedir"; then
                       haveit=yes
                       break
                     fi
@@ skipping 28 matching lines @@
                     dnl   1. if it's the standard /usr/lib,
                     dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
                     dnl   3. if it's already present in $LDFLAGS or the already
                     dnl      constructed $LIBNAME,
                     dnl   4. if it doesn't exist as a directory.
                     if test "X$additional_libdir" != "X/usr/lib"; then
                       haveit=
                       if test "X$additional_libdir" = "X/usr/local/lib"; then
                         if test -n "$GCC"; then
                           case $host_os in
-                            linux*) haveit=yes;;
+                            linux* | nacl*) haveit=yes;;
                           esac
                         fi
                       fi
                       if test -z "$haveit"; then
                         haveit=
                         for x in $LDFLAGS $LIB[]NAME; do
                           AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
                           if test "X$x" = "X-L$additional_libdir"; then
                             haveit=yes
                             break
@@ skipping 129 matching lines @@
       if test "X$x" = "X$element"; then
         haveit=yes
         break
       fi
     done
     if test -z "$haveit"; then
       [$1]="${[$1]}${[$1]:+ }$element"
     fi
   done
 ])