From: Guillaume Tucker
Sent: 03 February 2023 15:26
Find the actual echo binary using $(which echo) and use it for formatted output with -ne. 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
Nack. There is no reason to suppose that /bin/echo is any different from the version of echo builtin to the shell that make uses.
Not only that 'which' is a horrid shell script that is trying to emulate csh builtin. The bourne shell equivalent is 'type' and the posix one 'command'.
In any case the portable way to fix this is to use printf. This is a well defined program and is bultin to all modern shells.
David
This is for example the case with the KernelCI Docker images e.g. kernelci/gcc-10:x86-kselftest-kernelci. With the actual echo binary (e.g. in /bin/echo), the output is formatted as expected (x86 build this time):
Emit Tests for alsa Emit Tests for amd-pstate Skipping non-existent dir: arm64
Only the install target is using "echo -ne" so keep the $ECHO variable local to it.
Reported-by: "kernelci.org bot" bot@kernelci.org Fixes: 3297a4df805d ("kselftests: Enable the echo command to print newlines in Makefile") Signed-off-by: Guillaume Tucker guillaume.tucker@collabora.com
tools/testing/selftests/Makefile | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index 41b649452560..9619d0f3b2ff 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -234,10 +234,11 @@ ifdef INSTALL_PATH @# While building kselftest-list.text skip also non-existent TARGET dirs: @# they could be the result of a build failure and should NOT be @# included in the generated runlist.
- ECHO=`which echo`; \ 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 ] && $$ECHO "Skipping non-existent dir: $$TARGET" &&continue; \
$$ECHO -ne "Emit Tests for $$TARGET\n"; \-- 2.30.2
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