macOS 15.0.1 can't build Qt (Intel, without Xcode) #31054

Is there an existing issue for this?

• I have searched the existing issues

Current behaviour

make in depends fails

This is very recent, will try to find an earlier commit where it works.

Expected behaviour

To work.

Steps to reproduce

cd depends
make NO_WALLET=1 NO_UPNP=1 NO_ZMQ=1 

Relevant log output

...
Configuring qt...
Creating qmake...
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/qmake/main.cpp:30:
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/qmake/project.h:32:
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/qmake/library/qmakeevaluator.h:36:
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/qmake/library/qmakeparser.h:32:
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/qmake/library/qmake_global.h:32:
In file included from /Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/include/QtCore/qglobal.h:1:
/Users/sjors/dev/bitcoin2/depends/work/build/x86_64-apple-darwin24.0.0/qt/5.15.14-3f2e53999e5/qtbase/include/QtCore/../../src/corelib/global/qglobal.h:45:12: fatal error: 'type_traits' file not found
   45 | #  include <type_traits>
      |            ^~~~~~~~~~~~~
1 error generated.
make[1]: *** [main.o] Error 1
make: *** [/Users/sjors/dev/bitcoin2/depends/x86_64-apple-darwin24.0.0/.qt_stamp_configured] Error 2

I also still get #30978, in case that's related.

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

master@62e4516722115c2d5aeb6c197abc73ca7c078b23

Operating system and version

macOS 15.0.1

clang --version
Apple clang version 16.0.0 (clang-1600.0.26.3)
Target: x86_64-apple-darwin24.0.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

xcode-select -p
/Library/Developer/CommandLineTools

Machine specifications

Intel MBP from 2019.

It happens even on d71ac768424333b65a6d88c9752cc9c7fdb276f3, so it's not a recent change in the code. Will try some variations with Xcode, etc.

When I install XCode 16 and build depends for master @ 62e4516722115c2d5aeb6c197abc73ca7c078b23 it's happy.

brew install llvm (currently at 19.1.1) does not help. I used:

export PATH="$(brew --prefix llvm)/bin:$PATH"
export LDFLAGS="-L$(brew --prefix llvm)/lib"
export CPPFLAGS="-I$(brew --prefix llvm)/include"

Doesn't work on d71ac768424333b65a6d88c9752cc9c7fdb276f3 either.

I went back as far as ef20add4c98674183720d9631ac780f9a248b487 and still getting this error.

I always had Xcode installed on that machine, so it's possible I just never noticed it. But it's also possible this machine is just in a weird state.

I cannot neither confirm nor reproduce the issue on my MacBook Pro (2019, Intel).

The following scenarios were tested:

• Sonoma 14.6.1 + Command-Line Tools 15.0.
• Sonoma 14.7 + Command-Line Tools 16.0.
• Sequoia 15.0.1 + Command-Line Tools 16.0.
• Sequoia 15.0.1 + Xcode 16.0.
• Sequoia 15.0.1 + Xcode 16.0 installed and then deleted.

For all scenarios, here is the list of the installed Homebrew's packages:

% brew list
==> Formulae
cmake		pkg-config

==> Casks

But it's also possible this machine is just in a weird state.

It seems like that.

Did you try to reinstall command-line tools?

Going to close this for now, since you can't reproduce on Intel.

Once I have a new laptop, I might wipe and reinstall the 2019 device and try this stuff again.