Compiling with Samsung NaCl Pepper 42

[mrrunner]

I'm not able to compile Samsung fork of webports with current Samsung NaCl SDK.
I switched to master_42 branch after having the following error:

naclports: This version of naclports requires at least version 46 of
the NaCl SDK. The version in $NACL_SDK_ROOT is 42. If you want
to use naclports with an older version of the SDK please checkout
one of the pepper_XX branches (or run with
--skip-sdk-version-check).

Now, I get the following error when building boost lib for instance:

_$ TOOLCHAIN=pnacl ./make_all.sh boost

• set -e
• TARGETS=boost
• TARGETS=boost
• BUILD_FLAGS=--ignore-disabled
• export TOOLCHAIN
• export NACL_ARCH
• export BUILD_FLAGS
• NACL_ARCH=x86_64
• TOOLCHAIN=clang-newlib
• make boost
  bin/naclports install boost --ignore-disabled
  naclports: boost: cannot be built with clang-newlib
• TOOLCHAIN=glibc
• make boost
  bin/naclports install boost --ignore-disabled
  Building 'glibc-compat' [x86_64/glibc/release]
  Skipping extract; No upstream archive: 'glibc-compat' [x86_64/glibc/release]
  Toolchain not found: /Users/xxx/Documents/work/SamsungSmartTV/nacl_sdk/pepper_42/toolchain/mac_x86_glibc
  naclports: Building glibc-compat: failed.
  make: *** [boost] Error 1_

Am i missing something? Could someone shed some light on this?