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247 lines
8.1 KiB
Groff
247 lines
8.1 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "GCJ-DBTOOL 1"
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.TH GCJ-DBTOOL 1 "2015-06-23" "gcc-4.8.5" "GNU"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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gcj\-dbtool \- Manipulate class file mapping databases for libgcj
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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gcj-dbtool \fB\s-1OPTION\s0\fR \fI\s-1DBFILE\s0\fR [\fB\s-1MORE\s0\fR] ...
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.PP
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gcj-dbtool [\fB\-0\fR] [\fB\-\fR] [\fB\-n\fR] [\fB\-a\fR] [\fB\-f\fR]
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[\fB\-t\fR] [\fB\-l\fR] [\fB\-p\fR [\fI\s-1LIBDIR\s0\fR]]
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[\fB\-v\fR] [\fB\-m\fR] [\fB\-\-version\fR] [\fB\-\-help\fR]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\f(CW\*(C`gcj\-dbtool\*(C'\fR is a tool for creating and manipulating class file
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mapping databases. \f(CW\*(C`libgcj\*(C'\fR can use these databases to find a
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shared library corresponding to the bytecode representation of a
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class. This functionality is useful for ahead-of-time compilation of
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a program that has no knowledge of \f(CW\*(C`gcj\*(C'\fR.
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.PP
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\&\f(CW\*(C`gcj\-dbtool\*(C'\fR works best if all the jar files added to it are
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compiled using \f(CW\*(C`\-findirect\-dispatch\*(C'\fR.
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.PP
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Note that \f(CW\*(C`gcj\-dbtool\*(C'\fR is currently available as \*(L"preview
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technology\*(R". We believe it is a reasonable way to allow
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application-transparent ahead-of-time compilation, but this is an
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unexplored area. We welcome your comments.
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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.IP "\fB\-n\fR \fI\s-1DBFILE\s0\fR \fB[\fR\fI\s-1SIZE\s0\fR\fB]\fR" 4
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.IX Item "-n DBFILE [SIZE]"
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This creates a new database. Currently, databases cannot be resized;
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you can choose a larger initial size if desired. The default size is
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32,749.
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.IP "\fB\-a\fR \fI\s-1DBFILE\s0\fR\fB \fR\fI\s-1JARFILE\s0\fR\fB \fR\fI\s-1LIB\s0\fR" 4
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.IX Item "-a DBFILE JARFILE LIB"
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.PD 0
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.IP "\fB\-f\fR \fI\s-1DBFILE\s0\fR\fB \fR\fI\s-1JARFILE\s0\fR\fB \fR\fI\s-1LIB\s0\fR" 4
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.IX Item "-f DBFILE JARFILE LIB"
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.PD
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This adds a jar file to the database. For each class file in the jar,
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a cryptographic signature of the bytecode representation of the class
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is recorded in the database. At runtime, a class is looked up by its
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signature and the compiled form of the class is looked for in the
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corresponding shared library. The \fB\-a\fR option will verify
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that \fI\s-1LIB\s0\fR exists before adding it to the database; \fB\-f\fR
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skips this check.
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.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
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.IX Item "[-][-0] -m DBFILE DBFILE,[DBFILE]"
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Merge a number of databases. The output database overwrites any
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existing database. To add databases into an existing database,
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include the destination in the list of sources.
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.Sp
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If \fB\-\fR or \fB\-0\fR are used, the list of files to read is
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taken from standard input instead of the command line. For
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\&\fB\-0\fR, Input filenames are terminated by a null character
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instead of by whitespace. Useful when arguments might contain white
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space. The \s-1GNU\s0 find \-print0 option produces input suitable for this
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mode.
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.IP "\fB\-t\fR \fI\s-1DBFILE\s0\fR" 4
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.IX Item "-t DBFILE"
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Test a database.
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.IP "\fB\-l\fR \fI\s-1DBFILE\s0\fR" 4
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.IX Item "-l DBFILE"
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List the contents of a database.
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.IP "\fB\-p\fR" 4
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.IX Item "-p"
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Print the name of the default database. If there is no default
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database, this prints a blank line. If \fI\s-1LIBDIR\s0\fR is specified, use
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it instead of the default library directory component of the database
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name.
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.IP "\fB\-\-help\fR" 4
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.IX Item "--help"
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Print a help message, then exit.
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.IP "\fB\-\-version\fR" 4
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.IX Item "--version"
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.PD 0
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.IP "\fB\-v\fR" 4
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.IX Item "-v"
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.PD
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Print version information, then exit.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIgcc\fR\|(1), \fIgcj\fR\|(1), \fIgcjh\fR\|(1), \fIjcf\-dump\fR\|(1), \fIgfdl\fR\|(7),
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and the Info entries for \fIgcj\fR and \fIgcc\fR.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright (c) 2001\-2013 Free Software Foundation, Inc.
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.PP
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, the Front-Cover Texts being (a) (see below), and
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with the Back-Cover Texts being (b) (see below).
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A copy of the license is included in the
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man page \fIgfdl\fR\|(7).
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.PP
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(a) The \s-1FSF\s0's Front-Cover Text is:
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.PP
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.Vb 1
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\& A GNU Manual
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.Ve
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.PP
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(b) The \s-1FSF\s0's Back-Cover Text is:
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.PP
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.Vb 3
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\& You have freedom to copy and modify this GNU Manual, like GNU
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\& software. Copies published by the Free Software Foundation raise
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\& funds for GNU development.
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.Ve
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