Unable to build Client/Server variant for OpenJDK-11 on ARMv7-A

[David Holmes]

On 9/10/2021 3:58 pm, Aleksey Shipilev wrote:
> Hi,
> 
> This does not look a build issue per se, but rather a Hotspot bug.

The SIGILL in ThreadGroup.add looks to me like an issue with atomic 
operations as that is the first synchronized method that gets executed 
during VM initialization.

David
-----

> On 10/8/21 7:46 PM, John Cummings wrote:
>> I am using the source from https://hg.openjdk.java.net/jdk/jdk11. 
> 
> This is an extremely old JDK 11 tree. The most actual one is here:
>    https://github.com/openjdk/jdk11u-dev/
> 
> FWIW, ARM32 builds from that repo work for me on RPi 4:
>    https://builds.shipilev.net/openjdk-jdk11-dev/
> 
>> I am at the point where I am unsure where to proceed or what to 
>> change, and haven't been able to
>> find a solution anywhere thus far to build a client version of 
>> OpenJDK-11. If there's any
>> additional information I can/should provide, please let me know.
> 
> Additional things to try:
>   *) Build fastdebug, trying to see if any VM assert is triggered; pass 
> --with-debug-level=fastdebug to configure
>   *) Build/test the JDK mainline (https://github.com/openjdk/jdk/), 
> trying to see if this is a fixed issue that is missing a 11u backport
>   *) Trim down --with-extra-cflags and --with-extra-cxxflags, looking 
> for some special flag that triggers the bug
> 
> There were plenty of ARM32 bugs fixed (backported) in 11u, but I also 
> see some that are only fixed in later JDKs, for example:
>    https://bugs.openjdk.java.net/browse/JDK-8222825
>