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Message-Id: <5.2.0.9.2.20030104161638.01fbee88@pop3.cris.com>
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Date: Sat, 04 Jan 2003 16:20:36 -0800
To: cygwin AT cygwin DOT com
From: Randall R Schulz <rrschulz AT cris DOT com>
Subject: Re: javac on cygwin
In-Reply-To: <3E175D96.2030303@cotagesoft.com>
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 <5 DOT 2 DOT 0 DOT 9 DOT 2 DOT 20030104080555 DOT 01e83058 AT pop3 DOT cris DOT com>
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Shankar,

At 14:17 2003-01-04, Shankar Unni wrote:
>Randall R Schulz wrote:
>
>>Javac is not particularly special. It is a Windows-native program, and as 
>>such requires absolute file and directory names be provided in Windows 
>>format (forward slashes are OK, but drive letters are required and the 
>>Cygwin notion of root is completely unknown to such programs).
>
>Javac is a pure java program. The "windows executable" is only there as a 
>thin native wrapper that launches sun.tools.javac.Main.

That may be true, but it's irrelevant. Its external interface via its 
command line options follows the Windows conventions. That's all that 
matters. It is a Windows executable for all intents and purposes.


>The bigger problem is that Sun JRE is compiled to the native Win32 API, 
>not to cygwin, so *any* Java programs running in the Sun JRE will never 
>understand cygwin mount points.

Yes, of course. That's hardly surprising.


>In theory, someone could invest in the effort to port, say, the Linux port 
>of the Sun JRE to cygwin, but it would be a huge effort.
>
>Igor's idea (wrappers that run cygpath -m on the paths being passed to 
>Java) would be the best approach in this situation, especially for 
>well-known Java programs like "javac".

That's what I do. I have a generic one that converts anything that "looks 
like" a file name via cygpath. It's not fool-proof, but the criteria for 
converting names could be refined.

The alternative is a target-specific script that understands what all the 
arguments options and option arguments are and converts them as needed.

Randall Schulz 


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