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Mention command for disabling tracing when building

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Signed-off-by: Christophe Bedard <bedard.christophe@gmail.com>
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Christophe Bedard 2020-03-04 08:53:19 -08:00
parent 0125b73895
commit 608ae8517d
1 changed files with 9 additions and 1 deletions
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README.md
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@ -6,7 +6,7 @@ Tracing tools for ROS 2.
## Building ## Building
If the `TRACETOOLS_DISABLED` option is enabled during build or if LTTng is not found, then this package will not do anything. If LTTng is not found during build, or if the [`TRACETOOLS_DISABLED` option is enabled](#disabling-tracing), then this package will not do anything.
To enable tracing: To enable tracing:
@ -26,6 +26,14 @@ To enable tracing:
$ ros2 run tracetools status $ ros2 run tracetools status
``` ```
### Disabling tracing
Alternatively, to build and disable tracing, use `TRACETOOLS_DISABLED`:
```
$ colcon build --cmake-args " -DTRACETOOLS_DISABLED=ON"
```
## Tracing ## Tracing
The steps above will not lead to trace data being generated, and thus they will have no impact on execution. LTTng has to be enabled. The packages in this repo provide two options. The steps above will not lead to trace data being generated, and thus they will have no impact on execution. LTTng has to be enabled. The packages in this repo provide two options.