add doxygen support

Makefile.am

 ACLOCAL_AMFLAGS = -I m4
-SUBDIRS = src
-EXTRA_DIST = autogen.sh
+SUBDIRS = \
+	src \
\ No newline at end of file
+	docs
+EXTRA_DIST = autogen.sh docs/html
\ No newline at end of file

configure.ac

@@ -12,6 +12,7 @@ AC_PROG_RANLIB
 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
 
+
 AM_INIT_AUTOMAKE
 
 AC_CHECK_LIB([m], [sin])
@@ -21,6 +22,23 @@ AC_CHECK_HEADERS([limits.h stdlib.h unistd.h])
 AC_FUNC_ERROR_AT_LINE
 AC_CHECK_FUNCS([floor pow sqrt])
 
+AC_CHECK_PROGS([DOXYGEN],[doxygen])
+
+if test "x$DOXYGEN" = "xtrue"; then
+	AC_MSG_WARN([Doxygen not found - continuing without Doxygen support])
+fi
+
+AC_CHECK_PROGS([DOT],[dot])
+
+if test "x$DOT" = "xtrue"; then
+	AC_MSG_WARN([dot not found - install graphviz for more fancier documentation])
+fi
+
+
+AM_CONDITIONAL([HAVE_DOXYGEN],[test -n "$DOXYGEN"])
+AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([docs/Doxyfile])])
+
+
 NOMAD_ENABLE_MPI
 MPI_ENABLE_VAL="`eval test x$mpi = xtrue && echo "ENABLED"||echo "DISABLED"`"
 AM_CONDITIONAL([MPI_ENABLED],[test "$MPI_ENABLE_VAL" = "ENABLED"])
@@ -34,5 +52,5 @@ fi
 NOMAD_ENABLE_MODULE([MPI],[mpi])
 
 AC_PROG_CPP
-AC_CONFIG_FILES([Makefile src/Makefile nomad.pc nomadmpi.pc])
+AC_CONFIG_FILES([Makefile src/Makefile docs/Makefile nomad.pc nomadmpi.pc])
 AC_OUTPUT

docs/Makefile.am

+if HAVE_DOXYGEN
+directory = $(top_srcdir)/docs
+
+$(directory)/html: doxyfile.stamp
+
+doxyfile.stamp:
+	$(DOXYGEN) Doxyfile
+	echo Timestamp > doxyfile.stamp
+
+CLEANFILES = doxyfile.stamp
+
+docsdir = $(datadir)/docs/@PACKAGE@/html
+docs_DATA = $(directory)/html/*.html \
+	$(directory)/html/*.png \
+	$(directory)/html/*.css \
+	$(directory)/html/*.jpg \
+	$(directory)/html/*.m* \
+	$(directory)/html/*.js
+
+sdocsdir = $(datadir)/docs/@PACKAGE@/html/search
+sdocs_DATA = $(directory)/html/search/*.html \
+	$(directory)/html/search/*.png \
+	$(directory)/html/search/*.css \
+	$(directory)/html/search/*.js
+
+
+all-local: doxyfile.stamp
+clean-local:
+	rm -rf $(top_srcdir)/docs/html
+endif
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