1HOWTO create an LLVM crosstool from x86_64/Linux to ARM/Linux
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41. % llvm/utils/crosstool/create-snapshots.sh
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6   This will create llvm-[REV_L].tar.bz2 and llvm-gcc-4.2-[REV_G].tar.bz2,
7   where:
8     REV_L is the revision at which "llvm" was checked out, and
9     REV_G is the revision at which "llvm-gcc-4.2" was checked out
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11   Note that REV_L might REV_G might not be the same revision.
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132. Download CodeSourcery toolchain.  The exact location depends on your
14   $CROSS_TARGET but the script will tell you what the location of the file is
15   if you run it without having the file available.
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17   For example, if you're using $CROSS_TARGET == "arm-none-linux-gnueabi" then
18   you need to download:
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20   http://www.codesourcery.com/sgpp/lite/arm/portal/package1787/public/arm-none-linux-gnueabi/arm-2007q3-51-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
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22   NOTE: simply changing $CROSS_TARGET and modifying the URL accordingly will
23   not work -- you'll need to go to http://www.codesourcery.com and find the
24   correct file, as the release number in the file will also be different (e.g.,
25   in the file above, the release number is "51").
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273. You can override most values in the script without modifying it, e.g.
28   $INSTALL_ROOT (if you want to install in directory other than /usr/local).
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30   Run the script as:
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32   % env INSTALL_ROOT=[dir to install in] \
33         CODE_SOURCERY_PKG_PATH=[dir where you downloaded CodeSourcery tarball] \
34         LLVM_PKG_PATH=[dir where you stored your LLVM and LLVM-GCC snapshots] \
35         LLVM_SVN_REV=${REV_L} \
36         LLVMGCC_SVN_REV=${REV_G} \
37         build-install-linux.sh
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