From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
shuah@kernel.org, nathan@kernel.org, ndesaulniers@google.com
Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com,
john.fastabend@gmail.com, kpsingh@kernel.org,
bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
llvm@lists.linux.dev,
Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: [PATCH bpf-next 5/6] tools/runqslower: Enable cross-building with clang
Date: Mon, 22 Nov 2021 19:20:19 +0000 [thread overview]
Message-ID: <20211122192019.1277299-6-jean-philippe@linaro.org> (raw)
In-Reply-To: <20211122192019.1277299-1-jean-philippe@linaro.org>
Cross-building using clang requires passing the "-target" flag rather
than using the CROSS_COMPILE prefix. Makefile.include transforms
CROSS_COMPILE into CLANG_CROSS_FLAGS. Add them to CFLAGS, and erase
CROSS_COMPILE for the bpftool build, since it needs to be executed on
the host.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
tools/bpf/runqslower/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile
index 8791d0e2762b..da6de16a3dfb 100644
--- a/tools/bpf/runqslower/Makefile
+++ b/tools/bpf/runqslower/Makefile
@@ -12,7 +12,7 @@ BPFOBJ := $(BPFOBJ_OUTPUT)libbpf.a
BPF_DESTDIR := $(BPFOBJ_OUTPUT)
BPF_INCLUDE := $(BPF_DESTDIR)/include
INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../include/uapi)
-CFLAGS := -g -Wall
+CFLAGS := -g -Wall $(CLANG_CROSS_FLAGS)
# Try to detect best kernel BTF source
KERNEL_REL := $(shell uname -r)
@@ -88,4 +88,4 @@ $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(BPFOBJ_OU
$(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT)
$(Q)$(MAKE) $(submake_extras) -C ../bpftool OUTPUT=$(BPFTOOL_OUTPUT) \
- CC=$(HOSTCC) LD=$(HOSTLD)
+ ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD)
--
2.33.1
next prev parent reply other threads:[~2021-11-22 19:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-22 19:20 [PATCH bpf-next 0/6] tools/bpf: Enable cross-building with clang Jean-Philippe Brucker
2021-11-22 19:20 ` [PATCH bpf-next 1/6] tools: Help " Jean-Philippe Brucker
2021-11-22 19:20 ` [PATCH bpf-next 2/6] tools/resolve_btfids: Support cross-building the kernel " Jean-Philippe Brucker
2021-11-22 19:20 ` [PATCH bpf-next 3/6] tools/libbpf: Enable cross-building " Jean-Philippe Brucker
2021-11-29 23:51 ` Andrii Nakryiko
2021-11-22 19:20 ` [PATCH bpf-next 4/6] bpftool: " Jean-Philippe Brucker
2021-11-29 23:53 ` Andrii Nakryiko
2021-11-22 19:20 ` Jean-Philippe Brucker [this message]
2021-11-22 19:20 ` [PATCH bpf-next 6/6] selftests/bpf: " Jean-Philippe Brucker
2021-11-26 20:36 ` [PATCH bpf-next 0/6] tools/bpf: " Quentin Monnet
2021-11-26 21:15 ` Daniel Borkmann
2021-11-29 9:42 ` Jean-Philippe Brucker
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