From: Joel Fernandes <joelaf@google.com>
To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: kernel-team@android.com, Juri Lelli <juri.lelli@arm.com>,
Alison Chaiken <alison@she-devel.com>,
Chenbo Feng <fengc@google.com>,
Joel Fernandes <joelaf@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
David Miller <davem@davemloft.net>
Subject: [PATCH RFC v3 2/4] samples/bpf: Enable cross compiler support
Date: Sun, 3 Sep 2017 11:25:47 -0700 [thread overview]
Message-ID: <20170903182549.30866-2-joelaf@google.com> (raw)
In-Reply-To: <20170903182549.30866-1-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.
CC: Alexei Starovoitov <ast@kernel.org>
CC: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Miller <davem@davemloft.net>
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)/
--
2.14.1.581.gf28d330327-goog
next prev parent reply other threads:[~2017-09-03 18:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-03 18:25 [PATCH RFC v3 1/4] samples/bpf: Use getppid instead of getpgrp for array map stress Joel Fernandes
2017-09-03 18:25 ` Joel Fernandes [this message]
2017-09-03 18:25 ` [PATCH RFC v3 3/4] samples/bpf: Fix pt_regs issues when cross-compiling Joel Fernandes
2017-09-03 18:25 ` [PATCH RFC v3 4/4] samples/bpf: Add documentation on cross compilation Joel Fernandes
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