I checked the second link and it seems to be a gmake 4.4.x problem.

The last sentence in that link is

"A workaround is to always provide (an empty) GNUMAKEFLAGS environment variable."

so before the make command I entered

export GNUMAKEFLAGS=

and it compiles without warnings.

I will not put the environment variable in my profile, so I can watch the further development in updates of gmake.

Regards

Chris

Am Dienstag, dem 26.08.2025 um 13:33 -0700 schrieb Craig Leres:
On 8/26/25 12:17, Chris van der Meijden via OvmsDev wrote:
After some time I today compiled the newest code. For the first time on
Debian Trixie.

I got loads of warnings about a missing variable "GNUMAKEFLAGS" .

I've first saw this more than a year ago.

     http://lists.openvehicles.com/pipermail/ovmsdev/2024-June/016464.html

I think it's a regression in gmake itself.

     https://savannah.gnu.org/bugs/?63439

I put a little effort into finding a workaround but did not.

Craig