diff options
Diffstat (limited to 'docs/HowToBuildOnARM.rst')
| -rw-r--r-- | docs/HowToBuildOnARM.rst | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/docs/HowToBuildOnARM.rst b/docs/HowToBuildOnARM.rst new file mode 100644 index 0000000..d786a7d --- /dev/null +++ b/docs/HowToBuildOnARM.rst @@ -0,0 +1,47 @@ +.. _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 |
