The file `global-config.mk` contain configuration informations about paths to sources, executables and to the building destinations. It details all the variables which can be set but shouldn’t be modified, as it can receive new variables in the future needed for the script to work. Moreover is handled by git for new versions and any changes you make would be erased by new pull of the script. If you want to specify a dedicated value to any variable, you should copy its line definition to a new file inf the same folder, called `local-config.mk`. Like this, you will keep your local configuration files in the future with new versions of the script.
This variable is needed to recognize the files created as bitmaps from the substance source, it must include all the identifiers used in all the graphs, separated by a pipe and no space. It is used as regexp rule in the script.
Theses are the places where the script will generate the final png files. It will be the main repository used as reference to fill hereafter all the targets needed in any package needed.
## Blender related
You have to define also a blender file directory where you will store the files used to generate previews of texturesets. They will be handled vie the `material_list.json` file indicated in the following section. They will have to be organized a special way to function, see later.
The `BLENDEREXEC` variable is the path to the binary used to generate the preview. It must be compatible with the version used to save the renders files.
## Logo file
Indicate any logo you would need as watermark in any of the content.
# Destination preview folder
Where you will save the renders of the previews of each textureset generated by Blender.
# Material list
The path to the json file used to manage all the metadata linked to texturesets and proper management of the content generated by the script. It must comply to a specific organisation and content to work properly.