AIX UnsatisfiedLinkError: Failed to load library libfontmanager.so

[pshipton]

OpenJDK jdk_imageio fails.

[2023-06-07T02:19:10.377Z] java.lang.UnsatisfiedLinkError: Failed to load library ("/home/jenkins/workspace/Test_openjdk17_j9_extended.openjdk_ppc64_aix/openjdkbinary/j2sdk-image/lib/libfontmanager.so") rtld: 0712-001 Symbol _ZNK2OT10postV2Tail6subsetEP19hb_subset_context_t was referenced
[2023-06-07T02:19:10.377Z]       from module /home/jenkins/workspace/Test_openjdk17_j9_extended.openjdk_ppc64_aix/openjdkbinary/j2sdk-image/lib/libfontmanager.so(), but a runtime definition
[2023-06-07T02:19:10.377Z]       of the symbol was not found.
[2023-06-07T02:19:10.377Z] 	at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)

Seems like an issue with Harfbuzz 7.0.1 and xlc 16.1.0.11
We can try a later xlc version 16.1.0.14, which also means upgrading the runtime to a minimum of 16.1.0.10

[keithc-ca]

This surprises me: I would have expected that only C linkage functions would be exported/imported across shared library boundaries. The reference doesn't cross the boundary of any shared library: the function definition is simply missing.

[keithc-ca]

I think the problem is in hb-subset.cc. By not including hb-ot-post-table-v2subset.hh there, we have no implementation of bool OT::postV2Tail::subset(hb_subset_context_t *)const.

[jdekonin]

Upgrading to 16.1.0.14 causes a failure in compile with libharfbuzz.

[keithc-ca]

Upgrading to 16.1.0.14 causes a failure in compile with libharfbuzz.

To clarify: It doesn't cause a failure, but if the necessary definitions are visible, compiles fail similarly as compared with the current compiler.

[pshipton]

The workaround for jdk20 is in ibmruntimes/openj9-openjdk-jdk20#71

[keithc-ca]

This should be resolved by the pull requests referenced above.