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| .\" |
| .IX Title "GIJ 1" |
| .TH GIJ 1 "2011-04-28" "gcc-4.5.3" "GNU" |
| .\" For nroff, turn off justification. Always turn off hyphenation; it makes |
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| .if n .ad l |
| .nh |
| .SH "NAME" |
| gij \- GNU interpreter for Java bytecode |
| .SH "SYNOPSIS" |
| .IX Header "SYNOPSIS" |
| gij [\fB\s-1OPTION\s0\fR] ... \fI\s-1JARFILE\s0\fR [\fI\s-1ARGS\s0\fR...] |
| .PP |
| gij [\fB\-jar\fR] [\fB\s-1OPTION\s0\fR] ... \fI\s-1CLASS\s0\fR [\fI\s-1ARGS\s0\fR...] |
| [\fB\-cp\fR \fIpath\fR] [\fB\-classpath\fR \fIpath\fR] |
| [\fB\-D\fR\fIname\fR[=\fIvalue\fR]...] |
| [\fB\-ms=\fR\fInumber\fR] [\fB\-mx=\fR\fInumber\fR] |
| [\fB\-X\fR\fIargument\fR] [\fB\-verbose\fR] [\fB\-verbose:class\fR] |
| [\fB\-\-showversion\fR] [\fB\-\-version\fR] [\fB\-\-help\fR][\fB\-?\fR] |
| .SH "DESCRIPTION" |
| .IX Header "DESCRIPTION" |
| \&\f(CW\*(C`gij\*(C'\fR is a Java bytecode interpreter included with \f(CW\*(C`libgcj\*(C'\fR. |
| \&\f(CW\*(C`gij\*(C'\fR is not available on every platform; porting it requires a |
| small amount of assembly programming which has not been done for all the |
| targets supported by \fBgcj\fR. |
| .PP |
| The primary argument to \f(CW\*(C`gij\*(C'\fR is the name of a class or, with |
| \&\f(CW\*(C`\-jar\*(C'\fR, a jar file. Options before this argument are interpreted |
| by \f(CW\*(C`gij\*(C'\fR; remaining options are passed to the interpreted program. |
| .PP |
| If a class name is specified and this class does not have a \f(CW\*(C`main\*(C'\fR |
| method with the appropriate signature (a \f(CW\*(C`static void\*(C'\fR method with |
| a \f(CW\*(C`String[]\*(C'\fR as its sole argument), then \f(CW\*(C`gij\*(C'\fR will print an |
| error and exit. |
| .PP |
| If a jar file is specified then \f(CW\*(C`gij\*(C'\fR will use information in it to |
| determine which class' \f(CW\*(C`main\*(C'\fR method will be invoked. |
| .PP |
| \&\f(CW\*(C`gij\*(C'\fR will invoke the \f(CW\*(C`main\*(C'\fR method with all the remaining |
| command-line options. |
| .PP |
| Note that \f(CW\*(C`gij\*(C'\fR is not limited to interpreting code. Because |
| \&\f(CW\*(C`libgcj\*(C'\fR includes a class loader which can dynamically load shared |
| objects, it is possible to give \f(CW\*(C`gij\*(C'\fR the name of a class which has |
| been compiled and put into a shared library on the class path. |
| .SH "OPTIONS" |
| .IX Header "OPTIONS" |
| .IP "\fB\-cp\fR \fIpath\fR" 4 |
| .IX Item "-cp path" |
| .PD 0 |
| .IP "\fB\-classpath\fR \fIpath\fR" 4 |
| .IX Item "-classpath path" |
| .PD |
| Set the initial class path. The class path is used for finding |
| class and resource files. If specified, this option overrides the |
| \&\f(CW\*(C`CLASSPATH\*(C'\fR environment variable. Note that this option is |
| ignored if \f(CW\*(C`\-jar\*(C'\fR is used. |
| .IP "\fB\-D\fR\fIname\fR\fB[=\fR\fIvalue\fR\fB]\fR" 4 |
| .IX Item "-Dname[=value]" |
| This defines a system property named \fIname\fR with value \fIvalue\fR. |
| If \fIvalue\fR is not specified then it defaults to the empty string. |
| These system properties are initialized at the program's startup and can |
| be retrieved at runtime using the \f(CW\*(C`java.lang.System.getProperty\*(C'\fR |
| method. |
| .IP "\fB\-ms=\fR\fInumber\fR" 4 |
| .IX Item "-ms=number" |
| Equivalent to \f(CW\*(C`\-Xms\*(C'\fR. |
| .IP "\fB\-mx=\fR\fInumber\fR" 4 |
| .IX Item "-mx=number" |
| Equivalent to \f(CW\*(C`\-Xmx\*(C'\fR. |
| .IP "\fB\-noverify\fR" 4 |
| .IX Item "-noverify" |
| Do not verify compliance of bytecode with the \s-1VM\s0 specification. In addition, |
| this option disables type verification which is otherwise performed on BC-ABI |
| compiled code. |
| .IP "\fB\-X\fR" 4 |
| .IX Item "-X" |
| .PD 0 |
| .IP "\fB\-X\fR\fIargument\fR" 4 |
| .IX Item "-Xargument" |
| .PD |
| Supplying \f(CW\*(C`\-X\*(C'\fR by itself will cause \f(CW\*(C`gij\*(C'\fR to list all the |
| supported \f(CW\*(C`\-X\*(C'\fR options. Currently these options are supported: |
| .RS 4 |
| .IP "\fB\-Xms\fR\fIsize\fR" 4 |
| .IX Item "-Xmssize" |
| Set the initial heap size. |
| .IP "\fB\-Xmx\fR\fIsize\fR" 4 |
| .IX Item "-Xmxsize" |
| Set the maximum heap size. |
| .IP "\fB\-Xss\fR\fIsize\fR" 4 |
| .IX Item "-Xsssize" |
| Set the thread stack size. |
| .RE |
| .RS 4 |
| .Sp |
| Unrecognized \f(CW\*(C`\-X\*(C'\fR options are ignored, for compatibility with |
| other runtimes. |
| .RE |
| .IP "\fB\-jar\fR" 4 |
| .IX Item "-jar" |
| This indicates that the name passed to \f(CW\*(C`gij\*(C'\fR should be interpreted |
| as the name of a jar file, not a class. |
| .IP "\fB\-\-help\fR" 4 |
| .IX Item "--help" |
| .PD 0 |
| .IP "\fB\-?\fR" 4 |
| .IX Item "-?" |
| .PD |
| Print help, then exit. |
| .IP "\fB\-\-showversion\fR" 4 |
| .IX Item "--showversion" |
| Print version number and continue. |
| .IP "\fB\-\-fullversion\fR" 4 |
| .IX Item "--fullversion" |
| Print detailed version information, then exit. |
| .IP "\fB\-\-version\fR" 4 |
| .IX Item "--version" |
| Print version number, then exit. |
| .IP "\fB\-verbose\fR" 4 |
| .IX Item "-verbose" |
| .PD 0 |
| .IP "\fB\-verbose:class\fR" 4 |
| .IX Item "-verbose:class" |
| .PD |
| Each time a class is initialized, print a short message on standard error. |
| .PP |
| \&\f(CW\*(C`gij\*(C'\fR also recognizes and ignores the following options, for |
| compatibility with existing application launch scripts: |
| \&\f(CW\*(C`\-client\*(C'\fR, \f(CW\*(C`\-server\*(C'\fR, \f(CW\*(C`\-hotspot\*(C'\fR, \f(CW\*(C`\-jrockit\*(C'\fR, |
| \&\f(CW\*(C`\-agentlib\*(C'\fR, \f(CW\*(C`\-agentpath\*(C'\fR, \f(CW\*(C`\-debug\*(C'\fR, \f(CW\*(C`\-d32\*(C'\fR, |
| \&\f(CW\*(C`\-d64\*(C'\fR, \f(CW\*(C`\-javaagent\*(C'\fR, \f(CW\*(C`\-noclassgc\*(C'\fR, \f(CW\*(C`\-verify\*(C'\fR, |
| and \f(CW\*(C`\-verifyremote\*(C'\fR. |
| .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 |