RFR: 8343883: Cannot resolve user specified toolchain-path for lld after JDK-8338304 [v2]

[Magnus Ihse Bursie]

On Tue, 12 Nov 2024 15:08:02 GMT, SendaoYan <syan at openjdk.org> wrote:

>> After I remove the lld binary from `$TOOLCHAIN_PATH`, such as `mv /home/yansendao/software/acc/x86_64/bin/lld /tmp/`, the configure command generate `configure: error: Could not find required tool for LLD` as expected.
>
> If the statement `UTIL_REQUIRE_PROGS(LLD, lld)`lookup in `$PATH`, the line 77 condition statement in this PR has make sure that, and if the configure command doesn't received option `--with-toolchain-path`, the normal lookup in `$PATH` still work.

I meant, if you have lld in your PATH but not in TOOLCHAIN_PATH and you specify a toolchain path, then your patch will introduce a regression.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21999#discussion_r1838312868