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@@ -55,6 +55,22 @@ editing `BIT_RATE_DEFAULT` in `app/include/user_config.h`:
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Note that, by default, the firmware runs an auto-baudrate detection algorithm so that typing a few characters at boot time will cause
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the firmware to lock onto that baud rate (between 1200 and 230400).
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+### Integer build
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+By default a build will be generated supporting floating-point variables.
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+To reduce memory size an integer build can be created. You can change this
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+either by uncommenting `LUA_NUMBER_INTEGRAL` in `app/include/user_config.h`:
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+
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+```c
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+#define LUA_NUMBER_INTEGRAL
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+```
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+
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+OR by overriding this with the `make` command as it's [done during the CI
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+build](https://github.com/nodemcu/nodemcu-firmware/blob/master/.travis.yml#L30):
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+
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+```
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+make EXTRA_CCFLAGS="-DLUA_NUMBER_INTEGRAL ....
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+```
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+
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### Tag Your Build
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Identify your firmware builds by editing `app/include/user_version.h`
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