RFR: 8370438: Offer link time optimization support on library level

[Matthias Baesken]

On Tue, 4 Nov 2025 01:07:28 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> > When introducing new compiler flags, you need to do one of:
> 
> Just an idea to think about: would it be possible to share the same variable between the JDK and HotSpot to store these parameters? Even in this discussion, it would highlight that these parameters are not new. Or is it not worth the effort?


For the HS build, we set them directly in the makefile and not in the configure m4 files, see
https://github.com/openjdk/jdk/blob/e4aed95cac343f1339b9bc87721561bdc4c2f5ad/make/hotspot/lib/JvmFeatures.gmk#L179
Might indeed make sense to refactor this.

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PR Comment: https://git.openjdk.org/jdk/pull/27976#issuecomment-3484828679