mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 15:11:24 +00:00
6f20194cdb
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166769 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.8 KiB
ReStructuredText
48 lines
1.8 KiB
ReStructuredText
.. _how_to_build_on_arm:
|
|
|
|
===================================================================
|
|
How To Build On ARM
|
|
===================================================================
|
|
|
|
.. sectionauthor:: Wei-Ren Chen (陳韋任) <chenwj@iis.sinica.edu.tw>
|
|
|
|
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
|