Cross Compiling Monarch - nthallen/monarch GitHub Wiki

There are a couple example toolchain files in the root of the source tree. The build.sh script will need to be modified to support a new architecture.

When first building for the the iMX7, I discovered that the linaro toolchain did not include ncurses, which we require, so I needed to build that from source. To do that, I

• Downloaded the source
• Translated the toolchain file into a setup shell script
• Wrote a build script that got everything going into the right places. In particular, installation was directed to:
  • PREFIX=/usr
  • DESTDIR=extinst

I did not want to install directly into the toolchain's sysroot, to avoid corrupting it, but it was necessary to combine the two when compiling. To do that, I used linux's overlay to map both into a single read-only sysroot at /mnt/sysroot.