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| Started by | Joel Fernandes <joelaf@google.com> |
|---|---|
| First post | 2017-09-20 18:20 +0200 |
| Last post | 2017-09-20 23:30 +0200 |
| Articles | 2 — 2 participants |
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[PATCH v4 2/4] samples/bpf: Enable cross compiler support Joel Fernandes <joelaf@google.com> - 2017-09-20 18:20 +0200
Re: [PATCH v4 2/4] samples/bpf: Enable cross compiler support Daniel Borkmann <daniel@iogearbox.net> - 2017-09-20 23:30 +0200
| From | Joel Fernandes <joelaf@google.com> |
|---|---|
| Date | 2017-09-20 18:20 +0200 |
| Subject | [PATCH v4 2/4] samples/bpf: Enable cross compiler support |
| Message-ID | <urPTb-5ov-9@gated-at.bofh.it> |
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
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| From | Daniel Borkmann <daniel@iogearbox.net> |
|---|---|
| Date | 2017-09-20 23:30 +0200 |
| Message-ID | <urUJc-8w7-17@gated-at.bofh.it> |
| In reply to | #1735878 |
On 09/20/2017 06:11 PM, Joel Fernandes wrote: > 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> Acked-by: Daniel Borkmann <daniel@iogearbox.net>
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