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-HOWTO create an LLVM crosstool from x86_64/Linux to ARM/Linux
-=============================================================
-
-1. % llvm/utils/crosstool/create-snapshots.sh
-
- This will create llvm-[REV_L].tar.bz2 and llvm-gcc-4.2-[REV_G].tar.bz2,
- where:
- REV_L is the revision at which "llvm" was checked out, and
- REV_G is the revision at which "llvm-gcc-4.2" was checked out
-
- Note that REV_L might REV_G might not be the same revision.
-
-2. Download CodeSourcery toolchain. The exact location depends on your
- $CROSS_TARGET but the script will tell you what the location of the file is
- if you run it without having the file available.
-
- For example, if you're using $CROSS_TARGET == "arm-none-linux-gnueabi" then
- you need to download:
-
- 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
-
- NOTE: simply changing $CROSS_TARGET and modifying the URL accordingly will
- not work -- you'll need to go to http://www.codesourcery.com and find the
- correct file, as the release number in the file will also be different (e.g.,
- in the file above, the release number is "51").
-
-3. You can override most values in the script without modifying it, e.g.
- $INSTALL_ROOT (if you want to install in directory other than /usr/local).
-
- Run the script as:
-
- % env INSTALL_ROOT=[dir to install in] \
- CODE_SOURCERY_PKG_PATH=[dir where you downloaded CodeSourcery tarball] \
- LLVM_PKG_PATH=[dir where you stored your LLVM and LLVM-GCC snapshots] \
- LLVM_SVN_REV=${REV_L} \
- LLVMGCC_SVN_REV=${REV_G} \
- build-install-linux.sh
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