you can no longer use mixed cygwin paths as dependancies in a makefile
any more. for example, the following lines in a makefile fail:
echo hello world
running "make" on the above 2-line makefile yields the error:
Makefile:1: *** target pattern contains no `%'. Stop.
this used to work in a previous version of make. arguably it it not
obliged to work because the colon is the delimitter between the target
name and the dependency list, but this "feature" breaks our entire build
system, so i have reverted to a previous version of make.