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Update documentation about how to use clang toolchain 

Change-Id: Ie65eb779b048940cf32ed5744ff40610b3c5499d
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
This commit is contained in:
Roberto Vargas 2018-04-23 08:38:12 +01:00
parent 7040155e58
commit 4a98f0ef4c
1 changed files with 8 additions and 4 deletions
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12
docs/user-guide.rst
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@ -103,10 +103,14 @@ Building TF-A
export CROSS_COMPILE=<path-to-aarch32-gcc>/bin/arm-linux-gnueabihf-
It is possible to build TF-A using clang or Arm Compiler 6. To do so
``CC`` needs to point to the clang or armclang binary. Only the compiler
is switched; the assembler and linker need to be provided by the GNU
toolchain, thus ``CROSS_COMPILE`` should be set as described above.
It is possible to build TF-A using Clang or Arm Compiler 6. To do so
``CC`` needs to point to the clang or armclang binary, which will
also select the clang or armclang assembler. Be aware that the
GNU linker is used by default. In case of being needed the linker
can be overriden using the ``LD`` variable. Clang linker version 6 is
known to work with TF-A.
In both cases ``CROSS_COMPILE`` should be set as described above.
Arm Compiler 6 will be selected when the base name of the path assigned
to ``CC`` matches the string 'armclang'.