diff mbox series

[v4,4/4] samples/bpf: Add documentation on cross compilation

Message ID 20170920161159.25747-4-joelaf@google.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series Add cross-compilation support to eBPF samples | expand

Commit Message

Joel Fernandes Sept. 20, 2017, 4:11 p.m. UTC 
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Joel Fernandes <joelaf@google.com>
---
 samples/bpf/README.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Randy Dunlap Sept. 20, 2017, 4:50 p.m. UTC | #1 
On 09/20/17 09:11, Joel Fernandes wrote:
> Acked-by: Alexei Starovoitov <ast@kernel.org>
> Signed-off-by: Joel Fernandes <joelaf@google.com>
> ---
>  samples/bpf/README.rst | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst
> index 79f9a58f1872..2b906127ef54 100644
> --- a/samples/bpf/README.rst
> +++ b/samples/bpf/README.rst
> @@ -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
> +-----------------------
> +Inorder to cross-compile, say for arm64 targets, export CROSS_COMPILE and ARCH

   In order to

> +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
>
Daniel Borkmann Sept. 20, 2017, 9:25 p.m. UTC | #2 
On 09/20/2017 06:11 PM, Joel Fernandes wrote:
> Acked-by: Alexei Starovoitov <ast@kernel.org>
> Signed-off-by: Joel Fernandes <joelaf@google.com>

(Minor typo pointed out by Randy, but rest looks fine.)

Acked-by: Daniel Borkmann <daniel@iogearbox.net>
diff mbox series

Patch

diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst
index 79f9a58f1872..2b906127ef54 100644
--- a/samples/bpf/README.rst
+++ b/samples/bpf/README.rst
@@ -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
+-----------------------
+Inorder 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