The XC32 compiler is available in a free edition as either the legacy MPIDE compiler or the core compiler.

The core compiler is a requirement for newer chip families such as the PIC32MM but doesn't include the legacy microchip libraries to build older projects.

The legacy libraries are available for download but only as a binary installation. Newer device families such as the PIC32MM have no legacy backward compatibility.

apt-get install libc6-i386

cd /opt/
wget https://chipkit.s3.amazonaws.com/0150release/mpide-0150-linux64-20150820.tgz
tar zxvf mpide-0150-linux64-20150820.tgz
ln -sf mpide-0150-linux64-20150820/hardware/pic32/compiler/pic32-tools

Core compiler

cd /opt/
wget "https://chipkit.s3.amazonaws.com/chipkit-core/builds/linux64/chipkit-core-linux64.16778055.Branch_0299cad4-v2.0.6-2-g0299cad.zip"
unzip chipkit-core-linux64.16778055.Branch_0299cad4-v2.0.6-2-g0299cad.zip
ln -sf chipkit-core/pic32/compiler/pic32-tools

Legacy libraries

wget http://ww1.microchip.com/downloads/en/softwarelibrary/pic32%20peripheral%20library/pic32%20legacy%20peripheral%20libraries%20linux%20(2).tar
tar xvf pic32\ legacy\ peripheral\ libraries\ linux\ \(2\).tar
./PIC32\ Legacy\ Peripheral\ Libraries.run

When installing the libraries above use the following install directory.

/opt/pic32-tools

Finally, disable the legacy warnings from the legacy header files.

find /opt/pic32-tools/pic32mx/include/lega-c -name "*.h" -exec sed -i 's/#warning/\/\/#warning/g' {} \;
find /opt/pic32-tools/pic32mx/include/peripheral -name "*.h" -exec sed -i 's/#warning/\/\/#warning/g' {} \;

cd /opt/
wget https://chipkit.s3.amazonaws.com/0150release/mpide-0150-raspberrypi-20150820.tgz
tar zxvf mpide-0150-raspberrypi-20150820.tgz
ln -sf mpide-0150-raspberrypi-20150820/hardware/pic32/compiler/pic32-tools

Core compiler

cd /opt/
wget https://chipkit.s3.amazonaws.com/chipkit-core/builds/arm/chipkit-core-arm.16778055.Branch_0299cad4-v2.0.6-2-g0299cad.zip
unzip chipkit-core/builds/arm/chipkit-core-arm.16778055.Branch_0299cad4-v2.0.6-2-g0299cad.zip
ln -sf chipkit-core/pic32/compiler/pic32-tools

Legacy libraries

Perform the steps above for Linux AMD64 and afterwards copy plib.h and the lega-c and peripheral library and include files to the Pi.

For example, to archive and copy:

cd /opt/pic32-tools/pic32mx/include
tar cvf lega-c.tar lega-c
tar cvf peripheral.tar peripheral
scp plib.h *.tar pi@pi:
cd /opt/pic32-tools/pic32mx/lib
find -name "libmchp_peripheral*" | tar zcvf lib.tgz -T -
scp lib.tgz pi@pi:

To extract on the pi:

cd /opt/pic32-tools/pic32mx/include
mv ~/plib.h .
tar xvf ~/lega-c.tar
tar xvf ~/peripheral.tar
cd /opt/pic32-tools/pic32mx/lib
tar zxvf ~/lib.tgz

As per RPi above, with the following step.

cd /lib
ln -sf arm-linux-gnueabihf/ld-2.19.so ld-linux.so.3

Download and extract mpide-0023-windows-20140821.zip to c:\mpide-0023-windows-20140821

Run Cygwin terminal

mkdir -p /opt
ln -sf /cygdrive/c/mpide-0023-windows-20140821/hardware/pic32/compiler/pic32-tools /opt/pic32-tools

ChipKIT core download links

Legacy Libraries