\documentclass[twoside]{book}

% Packages required by doxygen
\usepackage{fixltx2e}
\usepackage{calc}
\usepackage{doxygen}
\usepackage[export]{adjustbox} % also loads graphicx
\usepackage{graphicx}
\usepackage[utf8]{inputenc}
\usepackage{makeidx}
\usepackage{multicol}
\usepackage{multirow}
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\usepackage[nointegrals]{wasysym}
\usepackage[table]{xcolor}

% NLS support packages
\usepackage[spanish]{babel}
% Font selection
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% Page & text layout
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% Headers & footers
\usepackage{fancyhdr}
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\fancyfoot[LE]{\fancyplain{}{}}
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\fancyfoot[RE]{\fancyplain{}{\bfseries\scriptsize Generado el Jueves, 18 de Junio de 2015 16\+:01\+:05 para My Project por Doxygen }}
\fancyfoot[LO]{\fancyplain{}{\bfseries\scriptsize Generado el Jueves, 18 de Junio de 2015 16\+:01\+:05 para My Project por Doxygen }}
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% Indices & bibliography
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\usepackage[titles]{tocloft}
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\makeindex

% Hyperlinks (required, but should be loaded last)
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% Custom commands
\newcommand{\clearemptydoublepage}{%
  \newpage{\pagestyle{empty}\cleardoublepage}%
}


%===== C O N T E N T S =====

\begin{document}

% Titlepage & ToC
\hypersetup{pageanchor=false,
             bookmarks=true,
             bookmarksnumbered=true,
             pdfencoding=unicode
            }
\pagenumbering{roman}
\begin{titlepage}
\vspace*{7cm}
\begin{center}%
{\Large My Project }\\
\vspace*{1cm}
{\large Generado por Doxygen 1.8.9.1}\\
\vspace*{0.5cm}
{\small Jueves, 18 de Junio de 2015 16:01:05}\\
\end{center}
\end{titlepage}
\clearemptydoublepage
\tableofcontents
\clearemptydoublepage
\pagenumbering{arabic}
\hypersetup{pageanchor=true}

%--- Begin generated contents ---
\chapter{Indice jerárquico}
\input{hierarchy}
\chapter{Índice de clases}
\input{annotated}
\chapter{Documentación de las clases}
\input{class_dialog}
\input{class_grid_widget}
%--- End generated contents ---

% Index
\backmatter
\newpage
\phantomsection
\clearemptydoublepage
\addcontentsline{toc}{chapter}{Índice}
\printindex

\end{document}