Sage build failure on MacOS Sequoia 15.4

[Zeke]

I'm having trouble building sage, encountering errors for the below packages. 

1. for both singular and gfan

Error arises from ./gfanlib_matrix.h 

a.vectormultiply(b.column(i))

2. for lcalc 

error: reference to 'complex' is ambiguous

3. for fflas_ffpack

no member named 'Low' in 'rint<K>'

1. seems to be a clang issue -- https://cgit.freebsd.org/ports/commit/?id=9020eeb540c2246c678a06098b916282e7251c11

3. seems to be 

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=98d3767a309723611fc0d554132ccd8535c6d467

2. seems to be a namespace issue? not sure about this. 

[Dima Pasechnik]

This looks like the report from
https://groups.google.com/g/sage-release/c/fbtK6VeIikE/m/zhJp0MtgCQAJ
(which also suggests fixes etc)

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[Michael Orlitzky]

On 2025-04-08 03:29:40, Zeke wrote:
> I'm having trouble building sage, encountering errors for the below
> packages.
>
> 1. for both singular and gfan
>
> Error arises from ./gfanlib_matrix.h
>
> a.vectormultiply(b.column(i))

For singular, this is:

https://github.com/Singular/Singular/issues/1242

Gfan needs the same fix (whatever it will be), but gfan has no bug
tracker, and anyway the latest v0.7 is unbuildable for me because it
uses nonstandard integer types...