RFR: 8366777: Build fails unknown pseudo-op with old AS on linux-aarch64

[SendaoYan]

On Wed, 3 Sep 2025 14:51:31 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> In our case, it was the old crosstools-ng generated toolchain. Have you seen this on some standard toolchain?

I observed this failure on ubuntu18 with gcc10 and the system-native bintuils toolchain. The gcc10 was installed from ppa:ubuntu-toolchain-r soure by apt install. Gcc10 and binutils are all native: jdk build on linux-aarch64 mahchine, the build target is linux-aarch64 . We choose this combination because this will make jdk build depencies lower glibc version.

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PR Comment: https://git.openjdk.org/jdk/pull/27073#issuecomment-3252181354