Adds an IPython kernel running in NaCl, and a wrapper as a Chrome extension.

ports/ipython_extension/build.sh

Index: ports/ipython_extension/build.sh
diff --git a/ports/ipython_extension/build.sh b/ports/ipython_extension/build.sh
new file mode 100644
index 0000000000000000000000000000000000000000..461c19096905d9f4acf4fbff3b0219deb4fff877
--- /dev/null
+++ b/ports/ipython_extension/build.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# Copyright (c) 2013 The Native Client Authors. All rights reserved.

[Sam Clegg, 2014/02/18 23:39:31]

2014

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+BUILD_DIR=${START_DIR}
+
+BuildStep() {
+  # The sample is built using the NaCl SDK common.mk system.
+  # We override $(OUTBASE) to force the build system to put
+  # all its artifacts in ${NACL_PACKAGES_REPOSITORY} rather
+  # than alongside the Makefile.
+  export OUTBASE=${SRC_DIR}
+  export NACLPORTS_INCLUDE
+  export NACLPORTS_PREFIX
+  export NACL_PACKAGES_PUBLISH
+  export NACL_SRC
+  export CFLAGS=${NACLPORTS_CFLAGS}
+  export CXXFLAGS=${NACLPORTS_CXXFLAGS}
+  export LDFLAGS=${NACLPORTS_LDFLAGS}
+
+  MakeDir ${OUTBASE}
+  if [ "${NACL_GLIBC}" = "1" ]; then
+    MAKEFLAGS+=" TOOLCHAIN=glibc"
+  elif [ "${NACL_ARCH}" = "pnacl" ]; then
+    MAKEFLAGS+=" TOOLCHAIN=pnacl"
+  else
+    MAKEFLAGS+=" TOOLCHAIN=newlib"
+  fi
+  if [ "${NACL_DEBUG}" = "1" ]; then
+    MAKEFLAGS+=" CONFIG=Debug"
+  else
+    MAKEFLAGS+=" CONFIG=Release"
+  fi
+  if [ "${NACL_ARCH}" != "pnacl" ]; then
+    MAKEFLAGS+=" NACL_ARCH=${NACL_ARCH_ALT}"
+  fi
+  MAKEFLAGS+=" V=1"
+  export MAKEFLAGS
+  ChangeDir ${START_DIR}
+  DefaultBuildStep

[Sam Clegg, 2014/02/18 23:39:31]

You should be able to just call BuildStep_SDKBuildSystem
here.  It was recently added.

+}