Add needed functions to glibc-compat for pkg

ports/cairo/build.sh

 # Copyright (c) 2011 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Workaround for arm-gcc bug:
 # https://code.google.com/p/nativeclient/issues/detail?id=3205
 # TODO(sbc): remove this once the issue is fixed
 if [ "${NACL_ARCH}" = "arm" ]; then
   NACLPORTS_CPPFLAGS+=" -mfpu=vfp"
 fi
 
 NACLPORTS_CPPFLAGS+=" -Dmain=nacl_main"
 
 if [ "${NACL_LIBC}" != "glibc"]; then
     NACLPORTS_LDFLAGS+=" ${NACL_CLI_MAIN_LIB}"
 else
     # moved cli_main flags here to alleviate glibc for linker order problems
     # This forces it to the end of the line, because -lnacl_io needs to come
     # before -lpthreads so it can inject properly
     export LIBS+=" ${NACL_CLI_MAIN_LIB}"
 fi
 
+if [ "${NACL_LIBC}" == "newlib" ]; then
+    NACLPORTS_LDFLAGS+=" -lglibc-compat"
+fi
+
 EXECUTABLES="test/cairo-test-suite${NACL_EXEEXT}"
 
 # This is only necessary for pnacl
 export ax_cv_c_float_words_bigendian=no
 
 # Enable the x backend
 EXTRA_CONFIGURE_ARGS+=" --with-x"
 EXTRA_CONFIGURE_ARGS+=" --enable-xlib=yes"
 EXTRA_CONFIGURE_ARGS+=" --enable-xlib-xrender=yes"
 # disable xcb
 EXTRA_CONFIGURE_ARGS+=" --disable-xcb"
 EXTRA_CONFIGURE_ARGS+=" --disable-xlib-xcb"
 EXTRA_CONFIGURE_ARGS+=" --disable-xcb-shm"
 # gobjects required for gdk-pixbuf -> gtk+
 EXTRA_CONFIGURE_ARGS+=" --enable-gobject=yes"
 
 export ac_cv_func_XRenderCreateLinearGradient=yes
 export ac_cv_func_XRenderCreateRadialGradient=yes
 export ac_cv_func_XRenderCreateConicalGradient=yes