Thanks!
I added these 2 lines to the texi file. Running "make" works fine:
Making all in doc
make[1]: Entering directory `/home/me/src/test/doc'
MAKEINFO
manual.info
make[1]: Leaving directory `/home/me/src/test/doc'
But running "make pdf" gives the following error:
Making pdf in doc
make[1]: Entering directory `/home/me/src/test/doc'
TEXI2PDF manual.pdf
/home/me/bin/texi2dvi: pdfetex exited with bad status, quitting.
make[1]: *** [manual.pdf] Error 1
make[1]: Leaving directory `/home/me/src/test/doc'
make: *** [pdf-recursive] Error 1