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36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
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## Logging
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Use `sway_log(importance, fmt, ...)` to log. The following importances are
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available:
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* `L_DEBUG`: Debug messages, only shows with `sway -d`
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* `L_INFO`: Informational messages
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* `L_ERROR`: Error messages
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`sway_log` is a macro that calls `_sway_log` with the current filename and line
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number, which are written into the log with your message.
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## Assertions
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In the compositor, assertions *must not* be fatal. All error cases must be
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handled as gracefully as possible - crashing the compositor will make the user
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lose all of their work.
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Use `sway_assert(condition, fmt, ...)` to perform an assertion. This returns
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`condition`, which you must handle if false. An error will be logged if the
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assertion fails.
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Outside of the compositor (swaymsg, swaybar, etc), using `assert.h` is
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permitted.
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## Building against a local wlc
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1. Build wlc as described [here](https://github.com/Cloudef/wlc#building)
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2. Inside your sway source folder, tell `cmake` to use your local version of wlc:
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```bash
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cmake \
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-DWLC_LIBRARIES=path/to/wlc/target/src/libwlc.so \
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-DWLC_INCLUDE_DIRS=path/to/wlc/include .
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```
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