+++ /dev/null
-.\" Automatically generated by Pod::Man version 1.15
-.\" Tue Apr 22 07:07:36 2003
-.\"
-.\" Standard preamble:
-.\" ======================================================================
-.de Sh \" Subsection heading
-.br
-.if t .Sp
-.ne 5
-.PP
-\fB\\$1\fR
-.PP
-..
-.de Sp \" Vertical space (when we can't use .PP)
-.if t .sp .5v
-.if n .sp
-..
-.de Ip \" List item
-.br
-.ie \\n(.$>=3 .ne \\$3
-.el .ne 3
-.IP "\\$1" \\$2
-..
-.de Vb \" Begin verbatim text
-.ft CW
-.nf
-.ne \\$1
-..
-.de Ve \" End verbatim text
-.ft R
-
-.fi
-..
-.\" Set up some character translations and predefined strings. \*(-- will
-.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
-.\" double quote, and \*(R" will give a right double quote. | will give a
-.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used
-.\" to do unbreakable dashes and therefore won't be available. \*(C` and
-.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<>
-.tr \(*W-|\(bv\*(Tr
-.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
-.ie n \{\
-. ds -- \(*W-
-. ds PI pi
-. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
-. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
-. ds L" ""
-. ds R" ""
-. ds C` ""
-. ds C' ""
-'br\}
-.el\{\
-. ds -- \|\(em\|
-. ds PI \(*p
-. ds L" ``
-. ds R" ''
-'br\}
-.\"
-.\" If the F register is turned on, we'll generate index entries on stderr
-.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and
-.\" index entries marked with X<> in POD. Of course, you'll have to process
-.\" the output yourself in some meaningful fashion.
-.if \nF \{\
-. de IX
-. tm Index:\\$1\t\\n%\t"\\$2"
-..
-. nr % 0
-. rr F
-.\}
-.\"
-.\" For nroff, turn off justification. Always turn off hyphenation; it
-.\" makes way too many mistakes in technical documents.
-.hy 0
-.if n .na
-.\"
-.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
-.\" Fear. Run. Save yourself. No user-serviceable parts.
-.bd B 3
-. \" fudge factors for nroff and troff
-.if n \{\
-. ds #H 0
-. ds #V .8m
-. ds #F .3m
-. ds #[ \f1
-. ds #] \fP
-.\}
-.if t \{\
-. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
-. ds #V .6m
-. ds #F 0
-. ds #[ \&
-. ds #] \&
-.\}
-. \" simple accents for nroff and troff
-.if n \{\
-. ds ' \&
-. ds ` \&
-. ds ^ \&
-. ds , \&
-. ds ~ ~
-. ds /
-.\}
-.if t \{\
-. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
-. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
-. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
-. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
-. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
-. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
-.\}
-. \" troff and (daisy-wheel) nroff accents
-.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
-.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
-.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
-.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
-.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
-.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
-.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
-.ds ae a\h'-(\w'a'u*4/10)'e
-.ds Ae A\h'-(\w'A'u*4/10)'E
-. \" corrections for vroff
-.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
-.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
-. \" for low resolution devices (crt and lpr)
-.if \n(.H>23 .if \n(.V>19 \
-\{\
-. ds : e
-. ds 8 ss
-. ds o a
-. ds d- d\h'-1'\(ga
-. ds D- D\h'-1'\(hy
-. ds th \o'bp'
-. ds Th \o'LP'
-. ds ae ae
-. ds Ae AE
-.\}
-.rm #[ #] #H #V #F C
-.\" ======================================================================
-.\"
-.IX Title "GCJ 1"
-.TH GCJ 1 "gcc-3.2.3" "2003-04-22" "GNU"
-.UC
-.SH "NAME"
-gcj \- Ahead-of-time compiler for the Java language
-.SH "SYNOPSIS"
-.IX Header "SYNOPSIS"
-gcj [\fB\-I\fR\fIdir\fR...] [\fB\-d\fR \fIdir\fR...]
- [\fB\*(--CLASSPATH\fR=\fIpath\fR] [\fB\*(--classpath\fR=\fIpath\fR]
- [\fB\-f\fR\fIoption\fR...] [\fB\*(--encoding\fR=\fIname\fR]
- [\fB\*(--main\fR=\fIclassname\fR] [\fB\-D\fR\fIname\fR[=\fIvalue\fR]...]
- [\fB\-C\fR] [\fB\*(--resource\fR \fIresource-name\fR] [\fB\-d\fR \fIdirectory\fR]
- [\fB\-W\fR\fIwarn\fR...]
- \fIsourcefile\fR...
-.SH "DESCRIPTION"
-.IX Header "DESCRIPTION"
-As \fBgcj\fR is just another front end to \fBgcc\fR, it supports many
-of the same options as gcc. This manual only documents the
-options specific to \fBgcj\fR.
-.SH "OPTIONS"
-.IX Header "OPTIONS"
-.Sh "Input and output files"
-.IX Subsection "Input and output files"
-A \fBgcj\fR command is like a \fBgcc\fR command, in that it
-consists of a number of options and file names. The following kinds
-of input file names are supported:
-.Ip "\fIfile\fR\fB.java\fR" 4
-.IX Item "file.java"
-Java source files.
-.Ip "\fIfile\fR\fB.class\fR" 4
-.IX Item "file.class"
-Java bytecode files.
-.Ip "\fIfile\fR\fB.zip\fR" 4
-.IX Item "file.zip"
-.PD 0
-.Ip "\fIfile\fR\fB.jar\fR" 4
-.IX Item "file.jar"
-.PD
-An archive containing one or more \f(CW\*(C`.class\*(C'\fR files, all of
-which are compiled. The archive may be compressed.
-.Ip "\fB@\fR\fIfile\fR" 4
-.IX Item "@file"
-A file containing a whitespace-separated list of input file names.
-(Currently, these must all be \f(CW\*(C`.java\*(C'\fR source files, but that
-may change.)
-Each named file is compiled, just as if it had been on the command line.
-.Ip "\fIlibrary\fR\fB.a\fR" 4
-.IX Item "library.a"
-.PD 0
-.Ip "\fIlibrary\fR\fB.so\fR" 4
-.IX Item "library.so"
-.Ip "\fB\-l\fR\fIlibname\fR" 4
-.IX Item "-llibname"
-.PD
-Libraries to use when linking. See the \fBgcc\fR manual.
-.PP
-You can specify more than one input file on the \fBgcj\fR command line,
-in which case they will all be compiled. If you specify a
-\&\f(CW\*(C`\-o \f(CI\s-1FILENAME\s0\f(CW\*(C'\fR
-option, all the input files will be compiled together, producing a
-single output file, named \fI\s-1FILENAME\s0\fR.
-This is allowed even when using \f(CW\*(C`\-S\*(C'\fR or \f(CW\*(C`\-c\*(C'\fR,
-but not when using \f(CW\*(C`\-C\*(C'\fR or \f(CW\*(C`\-\-resource\*(C'\fR.
-(This is an extension beyond the what plain \fBgcc\fR allows.)
-(If more than one input file is specified, all must currently
-be \f(CW\*(C`.java\*(C'\fR files, though we hope to fix this.)
-.Sh "Input Options"
-.IX Subsection "Input Options"
-\&\fBgcj\fR has options to control where it looks to find files it needs.
-For instance, \fBgcj\fR might need to load a class that is referenced
-by the file it has been asked to compile. Like other compilers for the
-Java language, \fBgcj\fR has a notion of a \fIclass path\fR. There are
-several options and environment variables which can be used to
-manipulate the class path. When \fBgcj\fR looks for a given class, it
-searches the class path looking for matching \fI.class\fR or
-\&\fI.java\fR file. \fBgcj\fR comes with a built-in class path which
-points at the installed \fIlibgcj.jar\fR, a file which contains all the
-standard classes.
-.PP
-In the below, a directory or path component can refer either to an
-actual directory on the filesystem, or to a \fI.zip\fR or \fI.jar\fR
-file, which \fBgcj\fR will search as if it is a directory.
-.Ip "\fB\-I\fR\fIdir\fR" 4
-.IX Item "-Idir"
-All directories specified by \f(CW\*(C`\-I\*(C'\fR are kept in order and prepended
-to the class path constructed from all the other options. Unless
-compatibility with tools like \f(CW\*(C`javac\*(C'\fR is imported, we recommend
-always using \f(CW\*(C`\-I\*(C'\fR instead of the other options for manipulating the
-class path.
-.Ip "\fB\*(--classpath=\fR\fIpath\fR" 4
-.IX Item "classpath=path"
-This sets the class path to \fIpath\fR, a colon-separated list of paths
-(on Windows-based systems, a semicolon-separate list of paths).
-This does not override the builtin (``boot'') search path.
-.Ip "\fB\*(--CLASSPATH=\fR\fIpath\fR" 4
-.IX Item "CLASSPATH=path"
-Deprecated synonym for \f(CW\*(C`\-\-classpath\*(C'\fR.
-.Ip "\fB\*(--bootclasspath=\fR\fIpath\fR" 4
-.IX Item "bootclasspath=path"
-Where to find the standard builtin classes, such as \f(CW\*(C`java.lang.String\*(C'\fR.
-.Ip "\fB\*(--extdirs=\fR\fIpath\fR" 4
-.IX Item "extdirs=path"
-For each directory in the \fIpath\fR, place the contents of that
-directory at the end of the class path.
-.Ip "\fB\s-1CLASSPATH\s0\fR" 4
-.IX Item "CLASSPATH"
-This is an environment variable which holds a list of paths.
-.PP
-The final class path is constructed like so:
-.Ip "\(bu" 4
-First come all directories specified via \f(CW\*(C`\-I\*(C'\fR.
-.Ip "\(bu" 4
-If \fB\*(--classpath\fR is specified, its value is appended.
-Otherwise, if the \f(CW\*(C`CLASSPATH\*(C'\fR environment variable is specified,
-then its value is appended.
-Otherwise, the current directory (\f(CW\*(C`"."\*(C'\fR) is appended.
-.Ip "\(bu" 4
-If \f(CW\*(C`\-\-bootclasspath\*(C'\fR was specified, append its value.
-Otherwise, append the built-in system directory, \fIlibgcj.jar\fR.
-.Ip "\(bu" 4
-Finaly, if \f(CW\*(C`\-\-extdirs\*(C'\fR was specified, append the contents of the
-specified directories at the end of the class path. Otherwise, append
-the contents of the built-in extdirs at \f(CW\*(C`$(prefix)/share/java/ext\*(C'\fR.
-.PP
-The classfile built by \fBgcj\fR for the class \f(CW\*(C`java.lang.Object\*(C'\fR
-(and placed in \f(CW\*(C`libgcj.jar\*(C'\fR) contains a special zero length
-attribute \f(CW\*(C`gnu.gcj.gcj\-compiled\*(C'\fR. The compiler looks for this
-attribute when loading \f(CW\*(C`java.lang.Object\*(C'\fR and will report an error
-if it isn't found, unless it compiles to bytecode (the option
-\&\f(CW\*(C`\-fforce\-classes\-archive\-check\*(C'\fR can be used to override this
-behavior in this particular case.)
-.Ip "\fB\-fforce-classes-archive-check\fR" 4
-.IX Item "-fforce-classes-archive-check"
-This forces the compiler to always check for the special zero length
-attribute \f(CW\*(C`gnu.gcj.gcj\-compiled\*(C'\fR in \f(CW\*(C`java.lang.Object\*(C'\fR and
-issue an error if it isn't found.
-.Sh "Encodings"
-.IX Subsection "Encodings"
-The Java programming language uses Unicode throughout. In an effort to
-integrate well with other locales, \fBgcj\fR allows \fI.java\fR files
-to be written using almost any encoding. \fBgcj\fR knows how to
-convert these encodings into its internal encoding at compile time.
-.PP
-You can use the \f(CW\*(C`\-\-encoding=\f(CI\s-1NAME\s0\f(CW\*(C'\fR option to specify an
-encoding (of a particular character set) to use for source files. If
-this is not specified, the default encoding comes from your current
-locale. If your host system has insufficient locale support, then
-\&\fBgcj\fR assumes the default encoding to be the \fB\s-1UTF-8\s0\fR encoding
-of Unicode.
-.PP
-To implement \f(CW\*(C`\-\-encoding\*(C'\fR, \fBgcj\fR simply uses the host
-platform's \f(CW\*(C`iconv\*(C'\fR conversion routine. This means that in practice
-\&\fBgcj\fR is limited by the capabilities of the host platform.
-.PP
-The names allowed for the argument \f(CW\*(C`\-\-encoding\*(C'\fR vary from platform
-to platform (since they are not standardized anywhere). However,
-\&\fBgcj\fR implements the encoding named \fB\s-1UTF-8\s0\fR internally, so if
-you choose to use this for your source files you can be assured that it
-will work on every host.
-.Sh "Warnings"
-.IX Subsection "Warnings"
-\&\fBgcj\fR implements several warnings. As with other generic
-\&\fBgcc\fR warnings, if an option of the form \f(CW\*(C`\-Wfoo\*(C'\fR enables a
-warning, then \f(CW\*(C`\-Wno\-foo\*(C'\fR will disable it. Here we've chosen to
-document the form of the warning which will have an effect \*(-- the
-default being the opposite of what is listed.
-.Ip "\fB\-Wredundant-modifiers\fR" 4
-.IX Item "-Wredundant-modifiers"
-With this flag, \fBgcj\fR will warn about redundant modifiers. For
-instance, it will warn if an interface method is declared \f(CW\*(C`public\*(C'\fR.
-.Ip "\fB\-Wextraneous-semicolon\fR" 4
-.IX Item "-Wextraneous-semicolon"
-This causes \fBgcj\fR to warn about empty statements. Empty statements
-have been deprecated.
-.Ip "\fB\-Wno-out-of-date\fR" 4
-.IX Item "-Wno-out-of-date"
-This option will cause \fBgcj\fR not to warn when a source file is
-newer than its matching class file. By default \fBgcj\fR will warn
-about this.
-.Ip "\fB\-Wunused\fR" 4
-.IX Item "-Wunused"
-This is the same as \fBgcc\fR's \f(CW\*(C`\-Wunused\*(C'\fR.
-.Ip "\fB\-Wall\fR" 4
-.IX Item "-Wall"
-This is the same as \f(CW\*(C`\-Wredundant\-modifiers \-Wextraneous\-semicolon
-\&\-Wunused\*(C'\fR.
-.Sh "Code Generation"
-.IX Subsection "Code Generation"
-In addition to the many \fBgcc\fR options controlling code generation,
-\&\fBgcj\fR has several options specific to itself.
-.Ip "\fB\*(--main=\fR\fI\s-1CLASSNAME\s0\fR" 4
-.IX Item "main=CLASSNAME"
-This option is used when linking to specify the name of the class whose
-\&\f(CW\*(C`main\*(C'\fR method should be invoked when the resulting executable is
-run. [1]
-.Ip "\fB\-D\fR\fIname\fR\fB[=\fR\fIvalue\fR\fB]\fR" 4
-.IX Item "-Dname[=value]"
-This option can only be used with \f(CW\*(C`\-\-main\*(C'\fR. It 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\-C\fR" 4
-.IX Item "-C"
-This option is used to tell \fBgcj\fR to generate bytecode
-(\fI.class\fR files) rather than object code.
-.Ip "\fB\*(--resource\fR \fIresource-name\fR" 4
-.IX Item "resource resource-name"
-This option is used to tell \fBgcj\fR to compile the contents of a
-given file to object code so it may be accessed at runtime with the core
-protocol handler as \fBcore:/\fR\fIresource-name\fR. Note that
-\&\fIresource-name\fR is the name of the resource as found at runtime; for
-instance, it could be used in a call to \f(CW\*(C`ResourceBundle.getBundle\*(C'\fR.
-The actual file name to be compiled this way must be specified
-separately.
-.Ip "\fB\-d\fR \fIdirectory\fR" 4
-.IX Item "-d directory"
-When used with \f(CW\*(C`\-C\*(C'\fR, this causes all generated \fI.class\fR files
-to be put in the appropriate subdirectory of \fIdirectory\fR. By
-default they will be put in subdirectories of the current working
-directory.
-.Ip "\fB\-fno-bounds-check\fR" 4
-.IX Item "-fno-bounds-check"
-By default, \fBgcj\fR generates code which checks the bounds of all
-array indexing operations. With this option, these checks are omitted, which
-can improve performance for code that uses arrays extensively. Note that this
-can result in unpredictable behavior if the code in question actually does
-violate array bounds constraints. It is safe to use this option if you are
-sure that your code will never throw an \f(CW\*(C`ArrayIndexOutOfBoundsException\*(C'\fR.
-.Ip "\fB\-fno-store-check\fR" 4
-.IX Item "-fno-store-check"
-Don't generate array store checks. When storing objects into arrays, a runtime
-check is normally generated in order to ensure that the object is assignment
-compatible with the component type of the array (which may not be known
-at compile-time). With this option, these checks are omitted. This can
-improve performance for code which stores objects into arrays frequently.
-It is safe to use this option if you are sure your code will never throw an
-\&\f(CW\*(C`ArrayStoreException\*(C'\fR.
-.Ip "\fB\-fjni\fR" 4
-.IX Item "-fjni"
-With \fBgcj\fR there are two options for writing native methods: \s-1CNI\s0
-and \s-1JNI\s0. By default \fBgcj\fR assumes you are using \s-1CNI\s0. If you are
-compiling a class with native methods, and these methods are implemented
-using \s-1JNI\s0, then you must use \f(CW\*(C`\-fjni\*(C'\fR. This option causes
-\&\fBgcj\fR to generate stubs which will invoke the underlying \s-1JNI\s0
-methods.
-.Ip "\fB\-fno-optimize-static-class-initialization\fR" 4
-.IX Item "-fno-optimize-static-class-initialization"
-When the optimization level is greather or equal to \f(CW\*(C`\-O2\*(C'\fR,
-\&\fBgcj\fR will try to optimize the way calls into the runtime are made
-to initialize static classes upon their first use (this optimization
-isn't carried out if \f(CW\*(C`\-C\*(C'\fR was specified.) When compiling to native
-code, \f(CW\*(C`\-fno\-optimize\-static\-class\-initialization\*(C'\fR will turn this
-optimization off, regardless of the optimization level in use.
-.Sh "Configure-time Options"
-.IX Subsection "Configure-time Options"
-Some \fBgcj\fR code generations options affect the resulting \s-1ABI\s0, and
-so can only be meaningfully given when \f(CW\*(C`libgcj\*(C'\fR, the runtime
-package, is configured. \f(CW\*(C`libgcj\*(C'\fR puts the appropriate options from
-this group into a \fBspec\fR file which is read by \fBgcj\fR. These
-options are listed here for completeness; if you are using \f(CW\*(C`libgcj\*(C'\fR
-then you won't want to touch these options.
-.Ip "\fB\-fuse-boehm-gc\fR" 4
-.IX Item "-fuse-boehm-gc"
-This enables the use of the Boehm \s-1GC\s0 bitmap marking code. In particular
-this causes \fBgcj\fR to put an object marking descriptor into each
-vtable.
-.Ip "\fB\-fhash-synchronization\fR" 4
-.IX Item "-fhash-synchronization"
-By default, synchronization data (the data used for \f(CW\*(C`synchronize\*(C'\fR,
-\&\f(CW\*(C`wait\*(C'\fR, and \f(CW\*(C`notify\*(C'\fR) is pointed to by a word in each object.
-With this option \fBgcj\fR assumes that this information is stored in a
-hash table and not in the object itself.
-.Ip "\fB\-fuse-divide-subroutine\fR" 4
-.IX Item "-fuse-divide-subroutine"
-On some systems, a library routine is called to perform integer
-division. This is required to get exception handling correct when
-dividing by zero.
-.Ip "\fB\-fcheck-references\fR" 4
-.IX Item "-fcheck-references"
-On some systems it's necessary to insert inline checks whenever
-accessing an object via a reference. On other systems you won't need
-this because null pointer accesses are caught automatically by the
-processor.
-.SH "FOOTNOTES"
-.IX Header "FOOTNOTES"
-.Ip "1." 4
-The linker by default looks for a global function named
-\&\f(CW\*(C`main\*(C'\fR. Since Java does not have global functions, and a
-collection of Java classes may have more than one class with a
-\&\f(CW\*(C`main\*(C'\fR method, you need to let the linker know which of those
-\&\f(CW\*(C`main\*(C'\fR methods it should invoke when starting the application.
-.SH "SEE ALSO"
-.IX Header "SEE ALSO"
-\&\fIgcc\fR\|(1), \fIgcjh\fR\|(1), \fIgij\fR\|(1), \fIjv-scan\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 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 1.1 or
-any later version published by the Free Software Foundation; with the
-Invariant Sections being ``\s-1GNU\s0 General Public License'', 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).
projects / msp430-gcc.git / blobdiff