On 04/02/2023 14:04, David Laight wrote:
> 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.
Ah great, thanks for the review. Will send a v2 with printf.
Guillaume
>> 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@xxxxxxxxxxxx>
>> Fixes: 3297a4df805d ("kselftests: Enable the echo command to print newlines in Makefile")
>> Signed-off-by: Guillaume Tucker <guillaume.tucker@xxxxxxxxxxxxx>
>> ---
>> 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"; \
>> $(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET COLLECTION=$$TARGET \
>> -C $$TARGET emit_tests >> $(TEST_LIST); \
>> done;
>> --
>> 2.30.2
>
> -
> Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
> Registration No: 1397386 (Wales)
>
>
