[RFC,bpf-next,06/10] samples: bpf: makefile: fix HDR_PROBE
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Message ID 20190830005037.24004-7-ivan.khoronzhuk@linaro.org
State New
Headers show
Series
  • improve/fix cross-compilation for bpf samples
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Commit Message

Ivan Khoronzhuk Aug. 30, 2019, 12:50 a.m. UTC
echo should be replace on echo -e to handle \n correctly, but instead,
replace it on printf as some systems can't handle echo -e.

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

Patch
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diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 9232efa2b1b3..043f9cc14cdd 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -208,7 +208,7 @@  endif
 
 # Don't evaluate probes and warnings if we need to run make recursively
 ifneq ($(src),)
-HDR_PROBE := $(shell echo "\#include <linux/types.h>\n struct list_head { int a; }; int main() { return 0; }" | \
+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)