[patch] add --with-java-home configure option

[Bryce McKinlay]

Thomas Fitzsimmons wrote:

>Hi,
>
>This patch adds a --with-java-home configure option and sets the
>java.home and sun.boot.class.path system properties accordingly.  In the
>future, we plan to make libgcj's installation layout more SDK-like for
>compatibility reasons -- at that point, we can expand the meaning of
>this option.  For now a separate project, java-gcj-compat, can be
>installed to provide compatibility symlinks.  The --with-java-home
>option will allow us to symlink java directly to gij, where before we
>were wrapping gij with a hacky option-massaging shell script.
>  
>

--with-java-home needs to be documented in install.texi

>Index: java/lang/natRuntime.cc
>===================================================================
>RCS file: /cvs/gcc/gcc/libjava/java/lang/natRuntime.cc,v
>retrieving revision 1.53
>diff -u -r1.53 natRuntime.cc
>--- java/lang/natRuntime.cc	2 Apr 2005 02:26:51 -0000	1.53
>+++ java/lang/natRuntime.cc	4 Apr 2005 22:03:55 -0000
>@@ -398,7 +398,10 @@
>   // part we do this because most people specify only --prefix and
>   // nothing else when installing gcj.  Plus, people are free to
>   // redefine `java.home' with `-D' if necessary.
>-  SET ("java.home", PREFIX);
>+  if (! strcmp (JAVA_HOME, ""))
>+    SET ("java.home", PREFIX);
>+  else
>+    SET ("java.home", JAVA_HOME);
>  
>
It would be better to use something like "#ifdef JAVA_HOME" here rather 
than a runtime comparison.

Regards

Bryce