[libidn2] build failure on osx pipeline

[autoantwort]

Host Environment

• OS: macOS CI
• Compiler: unknown

To Reproduce
Steps to reproduce the behavior:
Run pipeline of #17049

Failure logs
https://dev.azure.com/vcpkg/c1ee48cb-0df2-4ab3-8384-b1df5a79fe53/_apis/build/builds/51476/artifacts?artifactName=failure%20logs%20for%20x64-osx&api-version=6.0&%24format=zip

autoconf-x64-osx-err.log:

autoreconf: export WARNINGS=
autoreconf: Entering directory '.'
autoreconf: running: autopoint --force
autoreconf: running: aclocal --force -I m4 -I unistring/m4
autoreconf: configure.ac: tracing
autoreconf: running: glibtoolize --copy --force
autoreconf: configure.ac: not using Intltool
autoreconf: running: gtkdocize --copy
Can't exec "gtkdocize": No such file or directory at /usr/local/Cellar/autoconf/2.71/share/autoconf/Autom4te/FileUtils.pm line 293.
autoreconf: error: gtkdocize failed with exit status: 2

Additional context
It seems to be similar to #16990

[autoantwort]

Maybe you have to run https://apple.stackexchange.com/questions/108513/cant-exec-glibtoolize-no-such-file-or-directory
on the build nodes

[NancyLi1013]

Hi @autoantwort

Thanks for posting this issue.
I noticed that all CI checks have passed on #17049 now. Does this issue also exist on your machine?

On my virtual box machine, the failures like this:

  autoreconf: Entering directory `.'
  autoreconf: running: autopoint --force
  Can't exec "autopoint": No such file or directory at /usr/local/Cellar/autoconf/2.69/share/autoconf/Autom4te/FileUtils.pm line 345.
  autoreconf: failed to run autopoint: No such file or directory
  autoreconf: autopoint is needed because this package uses Gettext

I investigated this error and found the reference https://dausruddin.com/autoreconf-failed-to-run-autopoint-no-such-file-or-directory/ and http://tutorialspots.com/how-to-fix-error-autoreconf-failed-to-run-autopoint-no-such-file-or-directory-on-centos-4724.html.

Seems need to install gettext. But I cannot install it without permission.

So I'm not sure if it can solve the problem. If possible, you can try on your local machine.

[autoantwort]

Does this issue also exist on your machine?

Yes

[autoantwort]

brew install gtk-doc solves the issue

[NancyLi1013]

Thanks for your reply. This seems be related our test environment. For me, gettext is required.

[dg0yt]

IMO this is a problem with the ports which rely on autoconf:
While some host dependencies (such as gettext, gtk-doc) could be disabled by parameters to configure, they are mandatory when running autoconf.

[strega-nil]

Seems like this should be solved by changing the array here to also include gettext (and perhaps gtk-doc?)

Once this is PR'd, I can do the actual updates.

[dg0yt]

gtk-doc is already waiting for your review at #17227. I will add gettext and comment there.

[NancyLi1013]

brew install gettext solves the issue on my machine. We may need to add message to reminder users to install required dependency library.

But I'm not sure if other users have the same required dependency as mine. For now, I cannot confirm which one is needed for this port. Such as gettext or gtk-doc.

[dg0yt]

#17419 got merged, so this should be solved.

[NancyLi1013]

Thanks for your information @dg0yt