[PATCH] Update RPATH to make loading libjawt possible (was: Re: RPATHS in binaries) (original) (raw)

Omair Majid omajid at redhat.com
Wed Aug 8 23:08:10 UTC 2012

Hi Kumar,

On 07/23/2012 11:19 AM, Kumar Srinivasan wrote:

My suggestion is to see if System.loadLibrary can be used, this will bode well for the modularization effort.

I discussed this with the folks at awt-dev and they would prefer to avoid loading as much as possible. They are strongly against always preloading libjawt.so.

If this must be added to RPATH in which case, append this last to ensure we don't break anything.

Yes, the awt folks have asked me to use this approach. The attached patch updates the RPATH in the launchers to add the arch dir to RPATH.

A couple of questions:

  1. I am not sure if this problem exists on windows or on other operating systems and what sort of fixes are appropriate there. How do I deal with this?

  2. This patch uses RPATH (and not RUNPATH). This makes it impossible to use LD_LIBRARY_PATH to override the linker path. I don't see any potential dangerous effects (pretty much all libraries in the have an RPATH), and I suspect it's even intentional (so JDK6 can exec JDK7 with an LD_LIBRARY_PATH set and things will continue working). Does OpenJDK support platforms with RUNPATH (-Wl,--enable-new-dtags) ?

  3. I cant seem to get http://hg.openjdk.java.net/jdk8/build to build. It seems to be missing a number of fixes needed to build with newer versions of gcc and glibc. The patch applies to both jdk8/build and jdk7u/jdk7u-dev. I have only build with 7.

Thanks, Omair

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