Simplify cli_main

ports/mingn/build.sh

 # Copyright (c) 2014 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.
 
 BuildStep() {
   # Nothing to build.
   return
 }
 
 CreateMingnPackage() {
@@ skipping 104 matching lines @@
     else
       local ld_format="elf64-x86-64-nacl"
     fi
 
     # Merge libraries made from native_client_sdk so that you do not
     # need to specify -L option for them.
     cp ${NACL_SDK_ROOT}/lib/glibc_${arch_alt}/Release/* ${usr_lib_dir}
     # But also copy the debug ones.
     cp ${NACL_SDK_ROOT}/lib/glibc_${arch_alt}/Debug/* ${usr_lib_dir}/debug
 
-    local mingn_ldflags="-lcli_main -lppapi_simple -lnacl_spawn -lnacl_io"
+    local mingn_ldflags="${NACL_CLI_MAIN_LIB} -lppapi_simple -lnacl_io"
     mingn_ldflags+=" -lppapi -lppapi_cpp -lstdc++ -lm"
     # Create libmingn.so ldscripts.
     cat <<EOF > ${TOOLCHAIN_OUT_DIR}/${arch}-nacl/usr/lib/libmingn.so
 OUTPUT_FORMAT(${ld_format})
 GROUP(${mingn_ldflags})
 EOF
   done
 
   # Copy in SDK includes.
   LogExecute cp -r ${NACL_SDK_ROOT}/include mingn/
 
   # Remove shared objects which are symlinked after we resolve them.
   find mingn -name '*.so.*.*' -exec rm -f {} \;
 
   # Modify GCC's specs file. E.g.,
   # /path/to/nacl_sdk/pepper_canary/toolchain/linux_x86_glibc
   # => /mnt/html5/mingn/toolchain/nacl_x86_glibc.
   sed -i.bak 's@/\S*/pepper_[^/]*/toolchain/[^/]*_x86_glibc@/mnt/html5/mingn/toolchain/nacl_x86_glibc@g' \
       ${TOOLCHAIN_OUT_DIR}/lib/gcc/x86_64-nacl/4.4.3/specs
 
   CreateMingnPackage lib all
 }