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+.\" ========================================================================
+.\"
+.IX Title "GCJ-DBTOOL 1"
+.TH GCJ-DBTOOL 1 "2010-01-21" "gcc-4.4.3" "GNU"
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+gcj\-dbtool \- Manipulate class file mapping databases for libgcj
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+gcj-dbtool \fB\s-1OPTION\s0\fR \fI\s-1DBFILE\s0\fR [\fB\s-1MORE\s0\fR] ...
+.PP
+gcj-dbtool [\fB\-0\fR] [\fB\-\fR] [\fB\-n\fR] [\fB\-a\fR] [\fB\-f\fR]
+  [\fB\-t\fR] [\fB\-l\fR] [\fB\-p\fR [\fI\s-1LIBDIR\s0\fR]]
+  [\fB\-v\fR] [\fB\-m\fR] [\fB\-\-version\fR] [\fB\-\-help\fR]
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\f(CW\*(C`gcj\-dbtool\*(C'\fR is a tool for creating and manipulating class file
+mapping databases.  \f(CW\*(C`libgcj\*(C'\fR can use these databases to find a
+shared library corresponding to the bytecode representation of a
+class.  This functionality is useful for ahead-of-time compilation of
+a program that has no knowledge of \f(CW\*(C`gcj\*(C'\fR.
+.PP
+\&\f(CW\*(C`gcj\-dbtool\*(C'\fR works best if all the jar files added to it are
+compiled using \f(CW\*(C`\-findirect\-dispatch\*(C'\fR.
+.PP
+Note that \f(CW\*(C`gcj\-dbtool\*(C'\fR is currently available as \*(L"preview
+technology\*(R".  We believe it is a reasonable way to allow
+application-transparent ahead-of-time compilation, but this is an
+unexplored area.  We welcome your comments.
+.SH "OPTIONS"
+.IX Header "OPTIONS"
+.IP "\fB\-n\fR \fI\s-1DBFILE\s0\fR \fB[\fR\fI\s-1SIZE\s0\fR\fB]\fR" 4
+.IX Item "-n DBFILE [SIZE]"
+This creates a new database.  Currently, databases cannot be resized;
+you can choose a larger initial size if desired.  The default size is
+32,749.
+.IP "\fB\-a\fR \fI\s-1DBFILE\s0\fR\fB \fR\fI\s-1JARFILE\s0\fR\fB \fR\fI\s-1LIB\s0\fR" 4
+.IX Item "-a DBFILE JARFILE LIB"
+.PD 0
+.IP "\fB\-f\fR \fI\s-1DBFILE\s0\fR\fB \fR\fI\s-1JARFILE\s0\fR\fB \fR\fI\s-1LIB\s0\fR" 4
+.IX Item "-f DBFILE JARFILE LIB"
+.PD
+This adds a jar file to the database.  For each class file in the jar,
+a cryptographic signature of the bytecode representation of the class
+is recorded in the database.  At runtime, a class is looked up by its
+signature and the compiled form of the class is looked for in the
+corresponding shared library.  The \fB\-a\fR option will verify
+that \fI\s-1LIB\s0\fR exists before adding it to the database; \fB\-f\fR
+skips this check.
+.IP "\fB[\fR\fB\-\fR\fB][\fR\fB\-0\fR\fB] \-m\fR \fI\s-1DBFILE\s0\fR\fB \fR\fI\s-1DBFILE\s0\fR\fB,[\fR\fI\s-1DBFILE\s0\fR\fB]\fR" 4
+.IX Item "[-][-0] -m DBFILE DBFILE,[DBFILE]"
+Merge a number of databases.  The output database overwrites any
+existing database.  To add databases into an existing database,
+include the destination in the list of sources.
+.Sp
+If \fB\-\fR or \fB\-0\fR are used, the list of files to read is
+taken from standard input instead of the command line.  For
+\&\fB\-0\fR, Input filenames are terminated by a null character
+instead of by whitespace.  Useful when arguments might contain white
+space.  The \s-1GNU\s0 find \-print0 option produces input suitable for this
+mode.
+.IP "\fB\-t\fR \fI\s-1DBFILE\s0\fR" 4
+.IX Item "-t DBFILE"
+Test a database.
+.IP "\fB\-l\fR \fI\s-1DBFILE\s0\fR" 4
+.IX Item "-l DBFILE"
+List the contents of a database.
+.IP "\fB\-p\fR" 4
+.IX Item "-p"
+Print the name of the default database.  If there is no default
+database, this prints a blank line.  If \fI\s-1LIBDIR\s0\fR is specified, use
+it instead of the default library directory component of the database
+name.
+.IP "\fB\-\-help\fR" 4
+.IX Item "--help"
+Print a help message, then exit.
+.IP "\fB\-\-version\fR" 4
+.IX Item "--version"
+.PD 0
+.IP "\fB\-v\fR" 4
+.IX Item "-v"
+.PD
+Print version information, then exit.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fIgcc\fR\|(1), \fIgcj\fR\|(1), \fIgcjh\fR\|(1), \fIjcf\-dump\fR\|(1), \fIgfdl\fR\|(7),
+and the Info entries for \fIgcj\fR and \fIgcc\fR.
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+.PP
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, the Front-Cover Texts being (a) (see below), and
+with the Back-Cover Texts being (b) (see below).
+A copy of the license is included in the
+man page \fIgfdl\fR\|(7).
+.PP
+(a) The \s-1FSF\s0's Front-Cover Text is:
+.PP
+.Vb 1
+\&     A GNU Manual
+.Ve
+.PP
+(b) The \s-1FSF\s0's Back-Cover Text is:
+.PP
+.Vb 3
+\&     You have freedom to copy and modify this GNU Manual, like GNU
+\&     software.  Copies published by the Free Software Foundation raise
+\&     funds for GNU development.
+.Ve