linux-kernel - [PATCH v4 bpf-next 10/15] samples/bpf: use target CC environment for HDR

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Message-Id: <20191009204134.26960-11-ivan.khoronzhuk@linaro.org>
Date:   Wed,  9 Oct 2019 23:41:29 +0300
From:   Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
To:     ast@...nel.org, daniel@...earbox.net, yhs@...com,
        davem@...emloft.net, jakub.kicinski@...ronome.com, hawk@...nel.org,
        john.fastabend@...il.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, clang-built-linux@...glegroups.com,
        ilias.apalodimas@...aro.org, sergei.shtylyov@...entembedded.com,
        Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
Subject: [PATCH v4 bpf-next 10/15] samples/bpf: use target CC environment for HDR_PROBE

No need in hacking HOSTCC to be cross-compiler any more, so drop
this trick and use target CC for HDR_PROBE.

Acked-by: Andrii Nakryiko <andriin@...com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>
---
 samples/bpf/Makefile | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 57a15ff938a6..a6c33496e8ca 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -205,15 +205,14 @@ BTF_PAHOLE ?= pahole
 
 # Detect that we're cross compiling and use the cross compiler
 ifdef CROSS_COMPILE
-HOSTCC = $(CROSS_COMPILE)gcc
 CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
 endif
 
 # Don't evaluate probes and warnings if we need to run make recursively
 ifneq ($(src),)
 HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
-	$(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \
-	echo okay)
+	$(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \
+	-o /dev/null 2>/dev/null && echo okay)
 
 ifeq ($(HDR_PROBE),)
 $(warning WARNING: Detected possible issues with include path.)
-- 
2.17.1