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Subject[PATCH v2] selftests: use printf instead of echo -ne
Date
On some systems, the default echo command doesn't handle the -e option
and the output looks like this (arm64 build):

-ne Emit Tests for alsa

-ne Emit Tests for amd-pstate

-ne Emit Tests for arm64

This is for example the case with the KernelCI Docker images
e.g. kernelci/gcc-10:x86-kselftest-kernelci. To avoid this issue, use
printf which handles escape characters as a standard feature and is
more widespread among modern shells.

The output is now formatted as expected (x86 build this time):

Emit Tests for alsa
Emit Tests for amd-pstate
Skipping non-existent dir: arm64

Reported-by: "kernelci.org bot" <bot@kernelci.org>
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Fixes: 3297a4df805d ("kselftests: Enable the echo command to print newlines in Makefile")
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
---

Notes:
v2: use printf insead of $(which echo)

tools/testing/selftests/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 41b649452560..06578963f4f1 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -236,8 +236,8 @@ ifdef INSTALL_PATH
@# included in the generated runlist.
for TARGET in $(TARGETS); do \
BUILD_TARGET=$$BUILD/$$TARGET; \
- [ ! -d $(INSTALL_PATH)/$$TARGET ] && echo "Skipping non-existent dir: $$TARGET" && continue; \
- echo -ne "Emit Tests for $$TARGET\n"; \
+ [ ! -d $(INSTALL_PATH)/$$TARGET ] && printf "Skipping non-existent dir: $$TARGET\n" && continue; \
+ printf "Emit Tests for $$TARGET\n"; \
$(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET COLLECTION=$$TARGET \
-C $$TARGET emit_tests >> $(TEST_LIST); \
done;
--
2.30.2
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