[v3,bpf-next,03/14] samples: bpf: makefile: use --target from cross-compile
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Message ID 20190916105433.11404-4-ivan.khoronzhuk@linaro.org
State Superseded
Headers show
Series
  • samples: bpf: improve/fix cross-compilation
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Commit Message

Ivan Khoronzhuk Sept. 16, 2019, 10:54 a.m. UTC
For cross compiling the target triple can be inherited from
cross-compile prefix as it's done in CLANG_FLAGS from kernel makefile.
So copy-paste this decision from kernel Makefile.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
---
 samples/bpf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Andrii Nakryiko Sept. 16, 2019, 8:25 p.m. UTC | #1
On Mon, Sep 16, 2019 at 4:01 AM Ivan Khoronzhuk
<ivan.khoronzhuk@linaro.org> wrote:
>
> For cross compiling the target triple can be inherited from
> cross-compile prefix as it's done in CLANG_FLAGS from kernel makefile.
> So copy-paste this decision from kernel Makefile.
>
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
> ---

Acked-by: Andrii Nakryiko <andriin@fb.com>

>  samples/bpf/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
> index 43dee90dffa4..b59e77e2250e 100644
> --- a/samples/bpf/Makefile
> +++ b/samples/bpf/Makefile
> @@ -195,7 +195,7 @@ BTF_PAHOLE ?= pahole
>  # Detect that we're cross compiling and use the cross compiler
>  ifdef CROSS_COMPILE
>  HOSTCC = $(CROSS_COMPILE)gcc
> -CLANG_ARCH_ARGS = -target $(ARCH)
> +CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
>  endif
>
>  # Don't evaluate probes and warnings if we need to run make recursively
> --
> 2.17.1
>

Patch
diff mbox series

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 43dee90dffa4..b59e77e2250e 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -195,7 +195,7 @@  BTF_PAHOLE ?= pahole
 # Detect that we're cross compiling and use the cross compiler
 ifdef CROSS_COMPILE
 HOSTCC = $(CROSS_COMPILE)gcc
-CLANG_ARCH_ARGS = -target $(ARCH)
+CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
 endif
 
 # Don't evaluate probes and warnings if we need to run make recursively