Issue
Consider this Makfile:
all:
test 1 -eq 2 | cat
echo 'done'
It will be executed with no error.
I've heard of set -o pipefail
that I may use like this:
all:
set -o pipefail; \
test 1 -eq 2 | cat; \
echo 'done'
Apart that it does not work, this writing is very painful.
Another solution would be to use temporary files. I would like to avoid it.
What other solution can I use?
Solution
For anything more complicated than single commands I generally prefer using a script. That way you control the interpreter completely (via the shebang line), and you can put more complicated commands together rather than trying to shoe-horn it into effectively a single line. For example:
Makefile
:
all:
./my.sh
my.sh
:
#!/usr/bin/env bash
set -o errexit -o pipefail
test 1 -eq 2 | cat
echo 'done'
That said, the exit code of a Makefile command block like the one you have is the exit code of the last command since you separate the commands with ;
. You can use &&
to execute only until you get an error (equivalent to errexit
), like this:
set -o pipefail && test 1 -eq 2 | cat && echo 'done'
Answered By - l0b0 Answer Checked By - Gilberto Lyons (PHPFixing Admin)
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