nettle @3.9.1_0+universal: xcode-select: Failed to locate 'm4'

[thefinalcutbg (Hristo Konstantinov)]

Trying to install nettle +universal fails. During the installation a dialog with the following message pops-up: "The "m4" command requires the command line developer tools". However I already have CL dev tools installed, but even if I reinstall it through the dialog, the m4 command is still not found, next time I try to install nettle again. Calling m4 in the terminal by itself works just fine. I need nettle universal version, since it is a dependency of xmlsec (which is the actual universal binary I need, and I can't install it without nettle).

[thefinalcutbg (Hristo Konstantinov)]

the log from the install process

[ryandesign (Ryan Carsten Schmidt)]

The error in the log is:

xcode-select: Failed to locate 'm4', requesting installation of command line developer tools.

It seems Apple forgot to put m4 into the 15.3 version of the command line tools. This is the same problem as #69467 and #69481. It will be fixed by ​https://github.com/macports/macports-ports/pull/22984.

[ryandesign (Ryan Carsten Schmidt)]

In 48589c81916ab6bd8fa2d696a8b7a49d8c751dd6/macports-ports (master):

libtool: Use MacPorts m4

Fixes build of many ports that use libtool when using Xcode 15.3 in
which m4 is not included.

Closes: #69467
Closes: #69481
Closes: #69493
See: #69471

Reverses a previous decision not to use MacPorts m4 except on Tiger:

See: #47545

as it was already reversed in autoconf:

See: #62411

[ryandesign (Ryan Carsten Schmidt)]

Replying to ryandesign:

It seems Apple forgot to put m4 into the 15.3 version of the command line tools.

Apple notified me that they fixed it in Xcode CLT 16 beta 3 and I verified it seems to be fixed in 16 beta, 16 beta 2, and 16 beta 3.