<commit_before>External Native Client SDK Packages

The libraries directory contains bash scripts and patch files to build
common libraries for Native Client. The bash scripts will download, patch
build and copy the binary library and developer header files into your
Native Client SDK.

Before you can use the Makefile in this directory, you must set the
NACL_SDK_ROOT environment variable to top directory of a version of the
Native Client SDK (the directory containing toolchain/).
This path should be absolute.

The Makefile can build all of the libraries. Package dependencies are 
built into the Makefile. For example, 'make vorbis' will build
libvorbis-1.2.3 and libogg-1.1.4.  'make all' will build all of the libraries.

Headers and libraries are installed where nacl-gcc and nacl-g++ will
be able to automatically find them without having to add extra -I or -L<commit_msg>List build dependencies in README.txt. Review URL: http://codereview.chromium.org/8690001<commit_after>External Native Client SDK Packages

The libraries directory contains bash scripts and patch files to build
common libraries for Native Client. The bash scripts will download, patch
build and copy the binary library and developer header files into your
Native Client SDK.

The scripts require that centain tools are present in the host system.
You will need at least these (but probably more):
- autoconf, automake
- pkg-config
- gettext
- libglib2.0-dev >= 2.26.0 (if you want to build nacl-glib)

Before you can use the Makefile in this directory, you must set the
NACL_SDK_ROOT environment variable to top directory of a version of the
Native Client SDK (the directory containing toolchain/).
This path should be absolute.

The Makefile can build all of the libraries. Package dependencies are 
built into the Makefile. For example, 'make vorbis' will build
libvorbis-1.2.3 and libogg-1.1.4.  'make all' will build all of the libraries.

Headers and libraries are installed where nacl-gcc and nacl-g++ will
be able to automatically find them without having to add extra -I or -L
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