On Mon, 27 Jul 2026 21:29:43 GMT, Ashay Rane <[email protected]> wrote:
> This patch enables the `--enable-sccache` flag to enable build caching
> using sccache. Specifically, if the toolchain is one among gcc, clang,
> or MSVC and if the sccache version is 0.10 and above, then the build
> prefixes all compiler invocations with the path to the sccache binary.
>
> Since sccache is incompatible with ccache and precompiled headers, this
> patch makes the build fail if either ccache or precompiled headers are
> enabled in addition to sccache at the same time.
>
> Validated this patch on {Linux, Windows, macOS} x {x64, aarch64}
> machines. In the best-case scenario (i.e. when there are no changes to
> the source files), the time required to run the "make images" step is
> roughly cut in half. Side note: the individual machines have very
> different configurations, so build times _across_ machines aren't
> comparable.
>
> - Windows/x64: 2,107s -> 848s
> - Windows/ARM64: 1,264s -> 748s
> - macOS/x64: 808s -> 243s
> - macOS/AArch64: 480s -> 142s
> - Linux/x64: 225s -> 111s
> - Linux/AArch64: 364s -> 246s
>
> ---------
> - [x] I confirm that I make this contribution in accordance with the [OpenJDK
> Interim AI Policy](https://openjdk.org/legal/ai).
This pull request has now been integrated.
Changeset: 5a912628
Author: Ashay Rane <[email protected]>
Committer: Erik Joelsson <[email protected]>
URL:
https://git.openjdk.org/jdk/commit/5a912628cd1e446251cada96fe67d92c9bfaa7ff
Stats: 137 lines in 6 files changed: 134 ins; 0 del; 3 mod
8389209: Add sccache support to the build
Reviewed-by: erikj
-------------
PR: https://git.openjdk.org/jdk/pull/32059
