I use inkscape but not to generate code.
I do my drawing then save as .dxf (I also save as .svg for future editing tweaking)
I then import into Sheetcam (free BTW) and let it generate the code for my machine.
Sheetcam has a large number of post processor options.
The free version is limited to the amount of code it will let you generate, if I exceed the limit I break apart my inkscape drawing and save it as two three or sometimes four or five files.
The purchase price for the full version of Sheetcam is under $200.00 a bargain for a CAM software. that will eliminate the multiple files. Note that Sheetcam is primarily for Plasma and Laser, But I'm guessing if you are using Inkscape you are
you probably have a plasma cutter. Also Sheetcam will let you know what is wrong with your drawing so you can go back and edit or delete nodes to clean it up and make it G-code friendly.
If you are not familiar with Sheetcam a website called arclight dynamics has video tutorials for it, they also have tutorials for Inkscape, well worth checking out.
Tell me what engraver you have and I can look to see if Sheetcam has a postprocessor for it