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lvzhengyang
riscv-gcc-1
Commits
45fdd405
Commit
45fdd405
authored
Jul 07, 2004
by
Per Bothner
Committed by
Per Bothner
Jul 07, 2004
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* gcj.texi (Linking): New node. Document -lgij usage.
From-SVN: r84252
parent
fedf5454
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51 additions
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9 deletions
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-9
gcc/java/ChangeLog
+2
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gcc/java/gcj.texi
+49
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gcc/java/ChangeLog
View file @
45fdd405
...
@@ -2,6 +2,8 @@
...
@@ -2,6 +2,8 @@
*
gcj
.
texi
(
Invoking
gij
):
Document
new
-
verbose
:
class
flag
.
*
gcj
.
texi
(
Invoking
gij
):
Document
new
-
verbose
:
class
flag
.
*
gcj
.
texi
(
Linking
):
New
node
.
Document
-
lgij
usage
.
2004
-
07
-
07
Nathan
Sidwell
<
nathan
@
codesourcery
.
com
>
2004
-
07
-
07
Nathan
Sidwell
<
nathan
@
codesourcery
.
com
>
*
java
-
tree
.
h
(
CLASSTYPE_SPUER
):
Adjust
BINFO
macros
.
*
java
-
tree
.
h
(
CLASSTYPE_SPUER
):
Adjust
BINFO
macros
.
...
...
gcc/java/gcj.texi
View file @
45fdd405
...
@@ -161,6 +161,7 @@ options specific to @command{gcj}.
...
@@ -161,6 +161,7 @@ options specific to @command{gcj}.
* Input Options:: How gcj finds files
* Input Options:: How gcj finds files
* Encodings:: Options controlling source file encoding
* Encodings:: Options controlling source file encoding
* Warnings:: Options controlling warnings specific to gcj
* Warnings:: Options controlling warnings specific to gcj
* Linking:: Options for making an executable
* Code Generation:: Options controlling the output of gcj
* Code Generation:: Options controlling the output of gcj
* Configure-time Options:: Options you won'
t
use
* Configure-time Options:: Options you won'
t
use
@
end
menu
@
end
menu
...
@@ -353,21 +354,45 @@ This is the same as @code{-Wredundant-modifiers -Wextraneous-semicolon
...
@@ -353,21 +354,45 @@ This is the same as @code{-Wredundant-modifiers -Wextraneous-semicolon
@
end
table
@
end
table
@
node
Code
Generation
@
node
Linking
@
section
Code
Generation
@
section
Linking
In
addition
to
the
many
@
command
{
gcc
}
options
controlling
code
generation
,
To
turn
a
Java
application
into
an
executable
program
,
@
command
{
gcj
}
has
several
options
specific
to
itself
.
you
need
to
link
it
with
the
needed
libraries
,
just
as
for
C
or
C
++.
The
linker
by
default
looks
for
a
global
function
named
@
code
{
main
}.
Since
Java
does
not
have
global
functions
,
and
a
collection
of
Java
classes
may
have
more
than
one
class
with
a
@
code
{
main
}
method
,
you
need
to
let
the
linker
know
which
of
those
@
code
{
main
}
methods
it
should
invoke
when
starting
the
application
.
You
can
do
that
in
any
of
these
ways
:
@
itemize
@
bullet
@
item
Specify
the
class
containing
the
desired
@
code
{
main
}
method
when
you
link
the
application
,
using
the
@
code
{--
main
}
flag
,
described
below
.
@
item
Link
the
Java
package
(
s
)
into
a
shared
library
(
dll
)
rather
than
an
executable
.
Then
invoke
the
application
using
the
@
code
{
gij
}
program
,
making
sure
that
@
code
{
gij
}
can
find
the
libraries
it
needs
.
@
item
Link
the
Java
packages
(
s
)
with
the
flag
@
code
{-
lgij
},
which
links
in
the
@
code
{
main
}
routine
from
the
@
code
{
gij
}
command
.
This
allows
you
to
select
the
class
whose
@
code
{
main
}
method
you
want
to
run
when
you
run
the
application
.
You
can
also
use
other
@
code
{
gij
}
flags
,
such
as
@
code
{-
D
}
flags
to
set
properties
.
Using
the
@
code
{-
lgij
}
library
(
rather
than
the
@
code
{
gij
}
program
of
the
previous
mechanism
)
has
some
advantages
:
it
is
compatible
with
static
linking
,
and
does
not
require
configuring
or
installing
libraries
.
@
end
itemize
These
@
code
{
gij
}
options
relate
to
linking
an
execitable
:
@
table
@
gcctabopt
@
table
@
gcctabopt
@
item
--
main
=@
var
{
CLASSNAME
}
@
item
--
main
=@
var
{
CLASSNAME
}
This
option
is
used
when
linking
to
specify
the
name
of
the
class
whose
This
option
is
used
when
linking
to
specify
the
name
of
the
class
whose
@
code
{
main
}
method
should
be
invoked
when
the
resulting
executable
is
@
code
{
main
}
method
should
be
invoked
when
the
resulting
executable
is
run
.
@
footnote
{
The
linker
by
default
looks
for
a
global
function
named
run
.
@
code
{
main
}.
Since
Java
does
not
have
global
functions
,
and
a
collection
of
Java
classes
may
have
more
than
one
class
with
a
@
code
{
main
}
method
,
you
need
to
let
the
linker
know
which
of
those
@
code
{
main
}
methods
it
should
invoke
when
starting
the
application
.}
@
item
-
D
@
var
{
name
}[=@
var
{
value
}]
@
item
-
D
@
var
{
name
}[=@
var
{
value
}]
This
option
can
only
be
used
with
@
code
{--
main
}.
It
defines
a
system
This
option
can
only
be
used
with
@
code
{--
main
}.
It
defines
a
system
...
@@ -376,6 +401,21 @@ specified then it defaults to the empty string. These system properties
...
@@ -376,6 +401,21 @@ specified then it defaults to the empty string. These system properties
are
initialized
at
the
program
's startup and can be retrieved at runtime
are
initialized
at
the
program
's startup and can be retrieved at runtime
using the @code{java.lang.System.getProperty} method.
using the @code{java.lang.System.getProperty} method.
@item -lgij
Create an application whose command-line processing is that
of the @code{gij} command.
This option is an alternative to using @code{--main}; you cannot use both.
@end table
@node Code Generation
@section Code Generation
In addition to the many @command{gcc} options controlling code generation,
@command{gcj} has several options specific to itself.
@table @gcctabopt
@item -C
@item -C
This option is used to tell @command{gcj} to generate bytecode
This option is used to tell @command{gcj} to generate bytecode
(@file{.class} files) rather than object code.
(@file{.class} files) rather than object code.
...
...
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