From: Joel Fernandes <joelaf@google.com>
To: linux-kernel@vger.kernel.org
Cc: Chenbo Feng <fengc@google.com>,
Alison Chaiken <alison@she-devel.com>,
Juri.Lelli@arm.com, Joel Fernandes <joelaf@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
netdev@vger.kernel.org (open list:BPF (Safe dynamic programs and
tools))
Subject: [PATCH RFC v2 5/5] samples/bpf: Add documentation on cross compilation
Date: Mon, 7 Aug 2017 06:06:02 -0700 [thread overview]
Message-ID: <20170807130602.31785-6-joelaf@google.com> (raw)
In-Reply-To: <20170807130602.31785-1-joelaf@google.com>
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
+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
--
2.14.0.rc1.383.gd1ce394fe2-goog
prev parent reply other threads:[~2017-08-07 13:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-07 13:05 [PATCH RFC v2 0/5] add arm64 cross compilation support to BPF samples Joel Fernandes
2017-08-07 13:05 ` [PATCH RFC v2 1/5] samples/bpf: Use getppid instead of getpgrp for array map stress Joel Fernandes
2017-08-07 13:05 ` [PATCH RFC v2 2/5] samples/bpf: Enable cross compiler support Joel Fernandes
2017-08-07 13:06 ` [PATCH RFC v2 3/5] samples/bpf: Fix inline asm issues building samples on arm64 Joel Fernandes
2017-08-07 13:15 ` Joel Fernandes
2017-08-07 18:28 ` David Miller
2017-08-08 1:20 ` Joel Fernandes
2017-08-09 3:35 ` David Miller
2017-08-18 6:55 ` Joel Fernandes
2017-08-07 13:06 ` [PATCH RFC v2 4/5] samples/bpf: Fix pt_regs issues when cross-compiling Joel Fernandes
2017-08-07 13:06 ` Joel Fernandes [this message]
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