Re: Patch: java/lang/natRuntime.cc

[Ranjit Mathew <rmathew at hotmail dot com>]

Andrew Haley wrote:
> Michael Koch writes:
>  > > > +      char* libraryPath = ::getenv ("LD_LIBRARY_PATH");
>  > >
>  > > Sorry, but I don't think this is portable. For example,
>  > > on Windows, PATH is used to search for DLLs. My memory
>  > > is a bit hazy now, but on AIX it was something like
>  > > LD_LOAD_LIBRARY_PATH.
>  > 
>  > Well, getenv() is used in one other place in this file too. Thats why 
>  > I decided to use this. I can write a patch included the AIX variable 
>  > later today
> 
> If I recall correctly, Darwin uses something different again.  

It seems to use "DYLD_LIBRARY_PATH":

http://developer.apple.com/documentation/Darwin/Reference/ManPages/html/dyld.1.html


> Well, I have to ask what this is for.  Any gcj application that uses
> this will be fragile and have reduced portability.  The shared library
> loader searches its path using its own algorithms.  Why does a gcj
> program need to know this stuff as well?

For one, this is one of those mandatory System properties
that a JRE should be able to return (see JavaDoc for
System.getProperties( )). Maybe it is used by Sun's
implementation of System.loadLibrary( ) and for some
reason they thought it a useful property to expose. (For
example, if a Java application is not able to load its
JNI library, it can crib usefully asking the user to
put the library in one of the folders in this path...)

Ranjit.

-- 
Ranjit Mathew          Email: rmathew AT hotmail DOT com

Bangalore, INDIA.      Web: http://ranjitmathew.tripod.com/