On Wed, 27 Apr 2022 09:50:35 GMT, Pengfei Li <p...@openjdk.org> wrote:
> We are trying to cross build a RISC-V version of OpenJDK. We specified > `--openjdk-target=riscv64-linux-gnu` after `bash configure` but got an > error message. > > > configure: error: /usr/bin/bash > /home/ent-user/jdk_src/make/autoconf/build-aux/config.sub riscv64-linux-gnu > failed > configure exiting with result code 1 > > > It shows the processing of `riscv64-linux-gnu` in script `config.sub` > fails. We see `config.sub` calls another script `autoconf-config.sub` > to validate and canonicalize a configuration type. The validation fails > here because `autoconf-config.sub` is a quite old version and has no > RISC-V support inside. Comments in those scripts tell us patching the > autoconf script is not a good idea so we add a fix in `config.sub` in > this patch. > > We have verified RISC-V cross build succeeds after this change. As we > are not quite familiar with the build system, please let us know if this > is the best way to fix. This also works when doing a native build. Do you know why this issue is not there for other cpus likes aarch64? Just curious. BTW: I noticed there is an unnecessary new line at the end of file config.sub. Maybe we should remove it. ------------- PR: https://git.openjdk.java.net/jdk/pull/8420
