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. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20191011002808.28206-11-ivan.khoronzhuk@linaro.org
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@ -205,15 +205,14 @@ BTF_PAHOLE ?= pahole
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# Detect that we're cross compiling and use the cross compiler
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ifdef CROSS_COMPILE
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HOSTCC = $(CROSS_COMPILE)gcc
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CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_COMPILE:%-=%))
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endif
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# Don't evaluate probes and warnings if we need to run make recursively
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ifneq ($(src),)
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HDR_PROBE := $(shell printf "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
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$(HOSTCC) $(KBUILD_HOSTCFLAGS) -x c - -o /dev/null 2>/dev/null && \
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echo okay)
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$(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAGS) -x c - \
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-o /dev/null 2>/dev/null && echo okay)
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ifeq ($(HDR_PROBE),)
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$(warning WARNING: Detected possible issues with include path.)
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