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Add explanation for building on RPi Zero 2 W
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@ -111,24 +111,33 @@ $ sudo apt-get install build-essential libelf-dev linux-headers-`uname -r`
$ sudo apt-get install raspberrypi-kernel-headers
```
Then run this step to change platform in Makefile, For RPI 1/2/3/ & 0/Zero:
Then change the platform in Makefile to 32-bit `ARM` architecture (RPi 1/2/3/ & 0/Zero):
```
$ sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile
$ sed -i 's/CONFIG_PLATFORM_ARM_RPI = n/CONFIG_PLATFORM_ARM_RPI = y/g' Makefile
```
But for RPI 3B+ & 4B you will need to run those below which builds the ARM64 arch driver:
Or, for `ARM64` (RPI 3B+, 4B and Zero2) you will need to run:
```
$ sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile
$ sed -i 's/CONFIG_PLATFORM_ARM64_RPI = n/CONFIG_PLATFORM_ARM64_RPI = y/g' Makefile
```
In addition, if you receive an error message about `unrecognized command line option ‘-mgeneral-regs-only’` (i.e., Raspbian Buster), you will need to run the following commands, then retry building and installing:
In addition, if you receive an error message about `unrecognized command line option ‘-mgeneral-regs-only’` (i.e., Raspbian Buster), you will need to run the following commands for `ARM` architecture, then retry building and installing:
```
$ export ARCH=arm
$ sed -i 's/^MAKE="/MAKE="ARCH=arm\ /' dkms.conf
```
Or, for `ARM64` run the following before re-building:
```
$ export ARCH=arm64
$ sed -i 's/^MAKE="/MAKE="ARCH=arm64\ /' dkms.conf
```
Building the driver may exceed RAM on some RPi's resulting in a `gcc: fatal error: Killed signal terminated program cc1` error. Swap space can be increased in `/etc/dphys-swapfile` e.g. to `2000` megabytes, followed by `/etc/init.d/dphys-swapfile restart`. Building on swap is very slow, however.
For setting monitor mode
1. Fix problematic interference in monitor mode.
```