Short Question - About javac.c where is it?

[mr rupplin]

Hello.

I look and find that we start here:

http://hg.openjdk.java.net/jdk/jdk/file/b0fcf59be391/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Main.java

public Result compile(String[] argv, Context context)

and this leads to:

http://hg.openjdk.java.net/jdk/jdk/file/b0fcf59be391/src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java

comp.compile(args.getFileObjects(), args.getClassNames(), null, List.nil());


Which leads to genCode:

http://hg.openjdk.java.net/jdk/jdk/file/b0fcf59be391/src/jdk.compiler/share/classes/com/sun/tools/javac/main/JavaCompiler.java

 JavaFileObject genCode(Env<AttrContext> env, JCClassDecl cdef) throws IOException

Which calls:


return writer.writeClass(cdef.sym);

And so I think if I've understood you (without a debugger running on this end) the JavaCompiler (in Java) will do a C compile on various C source code documents and share libraries and this will make the native binary "javac".  Is that correct?

The file "javac" is a native binary that is produced with a JavaCompiler called from the "bash configure && make all" command?

Thanks!

😊 MR/
________________________________
From: Erik Joelsson <erik.joelsson at oracle.com>
Sent: Friday, July 20, 2018 6:56 PM
To: mr rupplin; build-dev at openjdk.java.net
Subject: Re: Short Question - About javac.c where is it?

Hello Max,

Javac, like most of the command line tools in the JDK is written in
Java, so to look at the actual program, I would recommend starting here
(assuming current mainline at http://hg.openjdk.java.net/jdk/jdk):

src/jdk.compiler/share/classes/com/sun/tools/javac/Main.java

Most of the executables in the JDK are built from the same launcher src
file with some different -D macro flags set to control which java class
gets invoked by that launcher. The source for the launchers is located here:

src/java.base/share/native/launcher/main.c

Does that answer your question?

/Erik


On 2018-07-20 15:31, mr rupplin wrote:
> In building the OpenJDK where may we find the source code file(s) for the javac output?
>
> In libjli we find the java.c but locate javac.c returns no results.  How curious.
>
> Would you be a friend and help us out.  We love reading.
>
> Thanks,
>
> Max
>
> /sr software developer