Target-specific files and prerequisites.

[Angel Tsankov]

I have two targets: dvi and pdf. They depends on disjoint sets of 
input graphics files: *.pstex_t and *.pdftex_t respectively. I also 
have a function GET_ALL_FILES that returns a list of all files at a 
specified root path. By filtering this list I get a list of master 
files (*.fig) that may need to be converted to either *.pstex_t or 
*.pdftex_t to get the input graphics files.
It seems that target-specific variables won't do since they do not get 
their values until execution of the target command script begins.

How do I define the relationship between dvi/pdf and the input 
graphics files?

Angel Tsankov
address@hidden