Commit 8bf2ac25 authored by Joel Fernandes's avatar Joel Fernandes Committed by David S. Miller
Browse files

samples/bpf: Add documentation on cross compilation 



Acked-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarJoel Fernandes <joelaf@google.com>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b655fc1c

samples/bpf/README.rst

+10 −0
Original line number Diff line number Diff line
@@ -64,3 +64,13 @@ It is also possible to point make to the newly compiled 'llc' or 
'clang' command via redefining LLC or CLANG on the make command line::



 make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang



Cross compiling samples

-----------------------

In order to cross-compile, say for arm64 targets, export CROSS_COMPILE and ARCH

environment variables before calling make. This will direct make to build

samples for the cross target.



export ARCH=arm64

export CROSS_COMPILE="aarch64-linux-gnu-"

make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang