Stop build if one executable() target fails

[Phil67ago]

In this test, A and B are built one after the other.
How can I stop ninja from building B if A fails.

meson.build

[eli-schwartz]

This should already be the case. ninja (and make too) will error out if one target fails to build, unless you pass the -k0.

[Phil67ago]

I my case ninja builds A and B so what could be wrong?
ninja --version: 1.11.1
meson --version: 1.0.1
I run ninja without any arguments

[Phil67ago]

just tested exit code from cc and it is 0=ok, 1=error

[eli-schwartz]

One thing that could be "wrong" is that ninja could have started building B first, or at the same time, so it was already built by the time A failed.

By default ninja builds in parallel, equivalent to make -j$(nproc). You can force ninja to build only one thing at a time with ninja -j1 but it's not obvious that that's better than just failing as soon as one target fails to build.

[Phil67ago]

Your right ninja -j1 only build A!
Thanks!!!