On Wed, 06 Jan 2021 12:05:54 +0100 Ludovic Courtès <l...@gnu.org> wrote:
> Hi, > > Fabien SK <fa...@free.fr> skribis: > > > Regarding Java, I think (but I'm not sure) that it's loaded by > > "libawt_xawt.so". In fontpath.c [1], there is a dlopen of > > libfontconfig. But if I do a "ldd" on the shared library itself, it > > looks like it does not depend on libfontconfig.so. > > [1] > > https://github.com/openjdk/jdk16/blob/37043b05576c8b81b43ac41a8f06de0d0bbb3f5b/src/java.desktop/unix/native/common/awt/fontpath.c#L566 > > Also libfontconfig is not on its RUNPATH: > > Indeed, all the ‘openjdk’ packages have fontconfig has an input, but > ‘guix size openjdk | grep fontconfig’ shows it’s not there, meaning > that nothing actually linked against fontconfig. > > Perhaps we should patch this ‘fontpath.c’, with ‘substitute*’, so that > it refers to libfontconfig.so by its absolute file name? We do that for icedtea (i.e. OpenJDK until version 8), but not for OpenJDK. I applied the same trick for OpenJDK 9 and will no longer get the NullPointerException. Let me clean it up a bit and apply it to all later OpenJDKs as well (might be already done through inheritence, but let me check), then I will send out a patch. Björn
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