Re: Issue 1852 in lilypond: manuals needs more explicit dependencies

[lilypond]

Comment #36 on issue 1852 by address@hidden: manuals needs more  
explicit dependencies
http://code.google.com/p/lilypond/issues/detail?id=1852#c36

Build dependencies for .texi files (issue 1852).

Write .dep files containing make dependency rules for .texi and .itexi  
files. They allow to simply type `make' to process the doc after changing  
an included file and have the manuals updated with the minimum amount of  
processing.

These .dep files are generated by recursively scanning for lines starting  
with @include in the .texi files, and looking up these included files  
within the include directories that we pass to texinfo. The same is done  
for .itexi files. The .dep files are included into the build by  
stepmake/generic-targets.make.

With this we can clean up Documentation/GNUmakefile a bit:
  - Remove the previous apparently unsuccessfull attempt at tracking  
dependencies with a wildcard, and
  - Remove dependencies that are caught automatically: only generated files  
need an explicit dependency, which weblinks.itexi is an example, thus
  - Add the explicit dependency for weblinks.itexi.

http://codereview.appspot.com/5131045