llvm/docs/HowToBuildOnARM.rst
Chris Lattner 2ba4bd97d1 remove the rest of the "written by" lines in the documentation. It is
against the developer policy to include this sort of thing as SVN blame
already captures this in a far more fine-grained way.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172109 91177308-0d34-0410-b5e6-96231b3b80d8
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.. _how_to_build_on_arm:
===================================================================
How To Build On ARM
===================================================================
Introduction
============
This document contains information about building/testing LLVM and
Clang on ARM.
Notes On Building LLVM/Clang on ARM
=====================================
Here are some notes on building/testing LLVM/Clang on ARM. Note that
ARM encompasses a wide variety of CPUs; this advice is primarily based
on the ARMv6 and ARMv7 architectures and may be inapplicable to older chips.
#. If you are building LLVM/Clang on an ARM board with 1G of memory or less,
please use ``gold`` rather then GNU ``ld``.
Building LLVM/Clang with ``--enable-optimized``
is prefered since it consumes less memory. Otherwise, the building
process will very likely fail due to insufficient memory. In any
case it is probably a good idea to set up a swap partition.
#. If you want to run ``make
check-all`` after building LLVM/Clang, to avoid false alarms (eg, ARCMT
failure) please use at least the following configuration:
.. code-block:: bash
$ ../$LLVM_SRC_DIR/configure --with-abi=aapcs-vfp
#. The most popular linaro/ubuntu OS's for ARM boards, eg, the
Pandaboard, have become hard-float platforms. The following set
of configuration options appears to be a good choice for this
platform:
.. code-block:: bash
./configure --build=armv7l-unknown-linux-gnueabihf
--host=armv7l-unknown-linux-gnueabihf
--target=armv7l-unknown-linux-gnueabihf --with-cpu=cortex-a9
--with-float=hard --with-abi=aapcs-vfp --with-fpu=neon
--enable-targets=arm --disable-optimized --enable-assertions