There are three general routes to Acrobat output: Adobe's original 'distillation' route (via PostScript output), conversion of a DVI file, and the use of a direct PDF generator such as PDFTeX (see the PDFTeX project) or MicroPress's VTeX (see commercial TeX implementations and 'free' TeX implementations)).
For simple documents (with no hyper-references), you can either
To translate all the LaTeX cross-referencing into Acrobat
links, you need a LaTeX package to suitably redefine
the internal commands. There are two of these for LaTeX, both
capable of conforming to the HyperTeX specification
(see Making hypertext documents from TeX):
Sebastian Rahtz's hyperref, and Michael Mehlich's
hyper. Hyperref
uses a configuration file to determine how it will generate hypertext;
it can operate using PDFTeX primitives, the hyperTeX
\
special
s, or DVI driver-specific \
special
commands.
Dvips
translates the DVI with these \
special
commands into
PostScript acceptable to Distiller, and dvipdfm has \
special
commands of its own.
There is no free implementation of all of Adobe Distiller's functionality, but recent versions of ghostscript provide pretty reliable distillation (but beware of the problems discussed in dvips output for distillation). In fact, Distiller itself is now remarkably cheap (for academics at least).
For viewing (and printing) the resulting files, Adobe's Acrobat Reader is available for a fair range of platforms; for those for which Adobe's reader is unavailable, remotely current versions of ghostscript combined with ghostview or GSview can display and print PDF files.
In many circumstances, ghostscript combined with a viewer
application is actually preferable to Acrobat Reader. For example, on
Windows Acrobat Reader locks the .pdf
file it's displaying: this
makes the traditional (and highly effective) (La)TeX development
cycle of "Edit-> Process-> Preview" become
incredibly clumsy - GSview doesn't make the same
mistake.
This question on the Web: http://www.tex.ac.uk/cgi-bin/texfaq2html?label=acrobat