`js78-config --libs` output is incorrect. I modified my local copy by just copying the MOZ_JS_LIBS contents into the second-last line (the only line that uses it).
Also, the -std= bit does not actually work with the headers... -std=c++17 is now required, so if you're patching the config script, that should be fixed as well.
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/ports/commit/?id=6cd9df2791564cbeaf88824acd5570ef184f8b72 commit 6cd9df2791564cbeaf88824acd5570ef184f8b72 Author: Steve Wills <swills@FreeBSD.org> AuthorDate: 2021-08-29 00:12:38 +0000 Commit: Steve Wills <swills@FreeBSD.org> CommitDate: 2021-08-29 00:13:34 +0000 lang/spidermonkey78: bug fixes * fix js78-config --libs * fix js::SharedArrayRawBufferRefs public API PR: 255023 PR: 255024 Reported by: shurd lang/spidermonkey78/Makefile | 2 +- .../files/patch-js_public_StructuredClone.h (new) | 13 +++++++++++++ .../files/patch-js_src_build_js-config.in (new) | 18 ++++++++++++++++++ 3 files changed, 32 insertions(+), 1 deletion(-)
Fix committed, thanks for the report!