Added support for generating Doxygen source documentation.

.gitignore

@@ -4,6 +4,8 @@
 *.la
 *.lo
 *.o
+*.tar.bz2
+*.tar.gz
 *~
 .deps/
 .libs/
@@ -14,6 +16,7 @@
 /AUTHORS
 /COPYING
 /ChangeLog
+/Doxyfile.gen
 /Makefile
 /Makefile.in
 /RegressionTests
@@ -31,6 +34,10 @@
 /configure
 /configure.in
 /depcomp
+/doc/Doxyfile.bak
+/doc/Doxyfile.gen
+/doc/html
+/doc/latex
 /elc-stamp
 /elisp-comp
 /install-sh
@@ -71,5 +78,3 @@ ltmain.sh
 missing
 stamp-h1
 texinfo.tex
-*.tar.gz
-*.tar.bz2

Makefile.am

@@ -263,12 +263,12 @@ DISTCLEANFILES += Doxyfile.gen
 
 alldocs: doc/ledger.info doc/ledger.pdf doxygen-docs
 
-$(top_builddir)/doc/Doxyfile.gen: $(srcdir)/doc/Doxyfile
+$(top_builddir)/Doxyfile.gen: $(srcdir)/doc/Doxyfile
 	cat $(srcdir)/doc/Doxyfile \
 	    | sed "s/%srcdir%/$(ESC_srcdir)/g" \
 	    | sed "s/%builddir%/$(ESC_builddir)/g" > $@
 
-doxygen-docs: $(top_builddir)/doc/Doxyfile.gen
-	doxygen $(top_builddir)/doc/Doxyfile.gen
+doxygen: $(top_builddir)/Doxyfile.gen
+	doxygen $(top_builddir)/Doxyfile.gen
 
 # Makefile.am ends here