From: Joel Fernandes <joelaf@google.com>
To: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org, alison@she-devel.com, juri.lelli@arm.com,
fengc@google.com, daniel@iogearbox.net, davem@davemloft.net,
ast@kernel.org, kernel-team@android.com,
Joel Fernandes <joelaf@google.com>
Subject: [PATCH v4 2/4] samples/bpf: Enable cross compiler support
Date: Wed, 20 Sep 2017 09:11:57 -0700 [thread overview]
Message-ID: <20170920161159.25747-2-joelaf@google.com> (raw)
In-Reply-To: <20170920161159.25747-1-joelaf@google.com>
When cross compiling, bpf samples use HOSTCC for compiling the non-BPF part of
the sample, however what we really want is to use the cross compiler to build
for the cross target since that is what will load and run the BPF sample.
Detect this and compile samples correctly.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Joel Fernandes <joelaf@google.com>
---
samples/bpf/Makefile | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index cf17c7932a6e..13f74b67ca44 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -177,6 +177,11 @@ HOSTLOADLIBES_syscall_tp += -lelf
LLC ?= llc
CLANG ?= clang
+# Detect that we're cross compiling and use the cross compiler
+ifdef CROSS_COMPILE
+HOSTCC = $(CROSS_COMPILE)gcc
+endif
+
# Trick to allow make to be run from this directory
all:
$(MAKE) -C ../../ $(CURDIR)/
--
2.14.1.821.g8fa685d3b7-goog
next prev parent reply other threads:[~2017-09-20 16:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 16:11 [PATCH v4 1/4] samples/bpf: Use getppid instead of getpgrp for array map stress Joel Fernandes
2017-09-20 16:11 ` Joel Fernandes [this message]
2017-09-20 21:24 ` [PATCH v4 2/4] samples/bpf: Enable cross compiler support Daniel Borkmann
2017-09-20 16:11 ` [PATCH v4 3/4] samples/bpf: Fix pt_regs issues when cross-compiling Joel Fernandes
2017-09-20 21:25 ` Daniel Borkmann
2017-09-20 16:11 ` [PATCH v4 4/4] samples/bpf: Add documentation on cross compilation Joel Fernandes
2017-09-20 16:50 ` Randy Dunlap
2017-09-20 21:25 ` Daniel Borkmann
2017-09-20 21:24 ` [PATCH v4 1/4] samples/bpf: Use getppid instead of getpgrp for array map stress Daniel Borkmann
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