This code fixes a bug in STM32CubeMX which only appears on non-Windows platforms as described here

• Install STM32CubeMX as described here
• Download stm32cubemx-patch-1.0.jar

• Run the following

  STM32CUBEMXDIR=<stm32cubedir> # /opt/STM32CubeMX/
  cp ${STM32CUBEMXDIR}/plugins/ip/gpio.jar ${STM32CUBEMXDIR}/plugins/ip/gpio.jar.orig
  mkdir /tmp/gpio
  cd /tmp/gpio
  jar xf ${STM32CUBEMXDIR}/plugins/ip/gpio.jar.orig
  java -jar ~/Downloads/stm32cubemx-patch-1.0.jar /tmp/gpio
  jar cf ${STM32CUBEMXDIR}/plugins/ip/gpio.jar *