In this talk, we will provide a brief introduction to the State-of-the-Art ofHigh Level Synthesis for FPGA, utterly dominated by privative & vendorspecific solutions but quietly becoming mainstream as algorithm accelerationbecomes a must to reach the computational power we need to move systemintelligence right to the edge. As an example of how this can be tackled from a FLOSS approach, we willprovide a practical example on how to use[HDLMake] to merge the FPGA bitstreaminto the Operating System, handling everything as a single Embedded Linuxruntime and providing a convenient abstraction to build & manage productiongrade Cyber-Physical Systems.