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Patch: document GCJ_PROPERTIES


This patch adds documentation for the GCJ_PROPERTIES environment
variable.  I think this support for this was added before we had any
documentation at all.

Ok to commit?  I'd like to put it in 3.4 as well.

Tom

Index: ChangeLog
from  Tom Tromey  <tromey@redhat.com>

	* gcj.texi (Extensions): Document GCJ_PROPERTIES.

Index: gcj.texi
===================================================================
RCS file: /cvs/gcc/gcc/gcc/java/gcj.texi,v
retrieving revision 1.57
diff -u -r1.57 gcj.texi
--- gcj.texi 28 Aug 2003 22:11:51 -0000 1.57
+++ gcj.texi 28 Feb 2004 22:14:22 -0000
@@ -563,6 +563,17 @@
 libraries will be mapped privately.
 @end itemize
 
+A program compiled by @code{gcj} will examine the
+@code{GCJ_PROPERTIES} environment variable and change its behavior in
+some ways.  In particular @code{GCJ_PROPERTIES} holds a list of
+assignments to global properties, such as would be set with the
+@code{-D} option to @code{java}.  For instance,
+@samp{java.compiler=gcj} is a valid (but currently meaningless)
+setting.
+@cindex GCJ_PROPERTIES
+@vindex GCJ_PROPERTIES
+
+
 @node Invoking gcjh
 @chapter Invoking gcjh
 


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