\subsection*{Installation}

Installation is {\itshape same as \hyperlink{namespacegt4f90io}{gt4f90io}.} See \hyperlink{INSTALL}{gtool5 Installation Guide} for details.

Note that a default install destination is changed from `/usr/local/gt4f90io\textquotesingle{} to `/usr/local/gtool5\textquotesingle{}.

\subsection*{Usage}

\subsubsection*{About your Fortran programs}

Names of some of modules are changed as follows along with transition from \char`\"{}gt4f90io\char`\"{} to \char`\"{}gtool5\char`\"{}. However, {\itshape you need not change your programs} because old names are available in \char`\"{}gtool5\char`\"{}.

\tabulinesep=1mm
\begin{longtabu} spread 0pt [c]{*{2}{|X[-1]}|}
\hline
\rowcolor{\tableheadbgcolor}\textbf{ Names of modules in \hyperlink{namespacegt4f90io}{gt4f90io} }&\textbf{ Names of modules in \hyperlink{namespacegtool5}{gtool5}  }\\\cline{1-2}
\endfirsthead
\hline
\endfoot
\hline
\rowcolor{\tableheadbgcolor}\textbf{ Names of modules in \hyperlink{namespacegt4f90io}{gt4f90io} }&\textbf{ Names of modules in \hyperlink{namespacegtool5}{gtool5}  }\\\cline{1-2}
\endhead
{\ttfamily \hyperlink{namespacegt4f90io}{gt4f90io}} &{\ttfamily \hyperlink{namespacegtool5}{gtool5}} \\\cline{1-2}
{\ttfamily \hyperlink{namespacegt4__history}{gt4\+\_\+history}} &{\ttfamily \hyperlink{namespacegtool__history}{gtool\+\_\+history}} \\\cline{1-2}
\end{longtabu}


\subsubsection*{Compilation of programs}

{\itshape gt4frt}, {\itshape gt4config} are provided by \char`\"{}gt4f90io\char`\"{} for compilation of programs, and display of options for compilation. These are changed to {\itshape gt5frt}, {\itshape gt5config} in \char`\"{}gtool5\char`\"{}.

A library name is changed from {\itshape libgt4f90io.\+a} to {\itshape libgtool5.\+a}, so if you specified a library name explicitly for complication, change the name. 