case sensitivity in patterns

[James]

(OS = Windows XP and 7)

 

In my makefiles, I have a pattern rule such as the following.  (This is for latex, where creating a DVI wants EPS files, and a PDF wants JPG (or similar).)

 

----------

JPG_FILES =  $(wildcard ./*.jpg)

EPS_FILES = $(JPG_FILES:.jpg=.eps)

 

%.eps : %.jpg
 bmeps -c -t jpg $< $@

 

----------

 

This all works fine when the file suffix is really lowercase "jpg".  Some of my files had a mixture such as "Jpg", "JPg", etc.  The substitution operation is case sensitive: "jpg" changes to "eps", but "Jpg" or "JPg", etc., do not. 

 

Is this the intended behavior, or am I doing something wrong?  On Windows, the filenames are (not usually) case sensitive.  Is there a way to have it to operate in an case-insensitive manner?

 

Thanks

James