Add support for new pnacl native toolchain driver

ports/perl/build.sh

 # Copyright (c) 2015 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.
 
 # falling back to cc for generating build time artifacts
 export BUILD_CC=cc
 export BUILD_LD=cc
 # use -Wno-return-type to suppress return-type errors encountered
 # with pnacl, arm's clang-newlib (microperl)
 NACLPORTS_CFLAGS_MICRO=$NACLPORTS_CFLAGS
 NACLPORTS_CFLAGS_MICRO+=" -Wno-return-type "
-NACLPORTS_CFLAGS+=" -I${NACL_SDK_ROOT}/include -I${NACLPORTS_INCLUDE} \
+NACLPORTS_CFLAGS+=" -I${NACL_SDK_ROOT}/include -isystem${NACLPORTS_INCLUDE} \
   -Wno-return-type"
 BUILD_DIR=${SRC_DIR}
 # keeping microperl for now
 EXECUTABLES="perl microperl"
 # we need a working perl on host to build things for target
 HOST_BUILD=${WORK_DIR}/build_host
 ARCH_DIR=${PUBLISH_DIR}/${NACL_ARCH}
 # PNaCl and newlib dont have dynamic loading, so
 # using Perl's internal stub file dl_none.xs
 # specifically for systems which do not support it
 # Also, FILE pointer is structured a bit differently
 # Relevant stdio parameters found via sel_ldr on Linux
-if [ "${NACL_LIBC}" = "newlib" -o "${NACL_ARCH}" = "pnacl" ] ; then
+if [ "${NACL_LIBC}" = "newlib" -o "${NACL_ARCH}" = "pnacl" \
+  -o "${NACL_ARCH}" = "le32" ] ; then
   NACLPORTS_LIBS+=" -lm -ltar"
   DYNAMIC_EXT=""
   NACL_GLIBC_DEF="undef"
   PERL_STDIO_BASE="(((fp)->_bf)._base)"
   PERL_STDIO_BUFSIZ="(((fp)->_bf)._size)"
   PERL_STDIO_CNT=""
   PERL_STDIO_PTR="((fp)->_p)"
   PERL_DLSRC="dl_none.xs"
   NACLPORTS_CCDLFLAGS=""
 else
@@ skipping 11 matching lines @@
   NACL_GLIBC_DEF="define"
   PERL_STDIO_BASE="((fp)->_IO_read_base)"
   PERL_STDIO_BUFSIZ="((fp)->_IO_read_end - (fp)->_IO_read_base)"
   PERL_STDIO_CNT="((fp)->_IO_read_end - (fp)->_IO_read_ptr)"
   PERL_STDIO_PTR="((fp)->_IO_read_ptr)"
   PERL_DLSRC="dl_dlopen.xs"
   NACLPORTS_CCDLFLAGS="-Wl,-E"
 fi
 # include Errno in pnacl
 NONXS_EXT=""
-if [ "${NACL_ARCH}" = "pnacl" ] ; then
+if [ "${NACL_ARCH}" = "pnacl" -o "${NACL_ARCH}" = "le32" ] ; then
   NONXS_EXT="Errno"
 fi
 
 EnableCliMain
 EnableGlibcCompat
 
 # BuildHostMiniperl builds miniperl for host, which is needed for
 # building Perl for the target
 BuildHostMiniperl() {
   if [ ! -x ${HOST_BUILD}/miniperl ]; then
@@ skipping 90 matching lines @@
     MakeDir ${DESTDIR_BIN}
     LogExecute cp -f ${SRC_DIR}/{perl,microperl} ${DESTDIR_BIN}/
   fi
 }
 
 TestStep() {
   export NACL_SDK_ROOT
   export TOOLCHAIN
 
   # skip for pnacl
-  if [ "${NACL_ARCH}" = "pnacl" ] ; then
+  if [ "${NACL_ARCH}" = "pnacl" -o "${NACL_ARCH}" = "le32" ] ; then
     return
   fi
 
   # ignore error messages for now
   echo "Running ${START_DIR}/tests.sh"
   ${START_DIR}/tests.sh 2>tests_err.txt 1>tests_out.txt
   EXPECTED=${START_DIR}/expected_${TOOLCHAIN}.txt
   if ! cmp tests_out.txt ${EXPECTED}; then
     echo "Test output did not match expected output"
     echo "See ${PWD}/tests_err.txt"
     diff -u tests_out.txt ${EXPECTED}
     exit 1
   fi
 
   echo "PASSED"
 }