How to install Qt5 on MacOS Catalina

Question

I am trying to install Geant4 dependencies and one of them is Qt5. I used Homebrew to install it.

brew install qt@5

After waiting 2 hours, brew didn't install Qt5.

==> /usr/local/opt/[email protected]/libexec/bin/python -m pip install .
Last 15 lines from /Users/kaan/Library/Logs/Homebrew/python-packaging/03.python:
  File "/usr/local/Cellar/[email protected]/3.12.0/Frameworks/Python.framework/Versions/3.12/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1381, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1354, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1304, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1381, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1354, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1318, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'flit_core'


[notice] A new release of pip is available: 23.2.1 -> 23.3.1
[notice] To update, run: python3.12 -m pip install --upgrade pip

Do not report this issue to Homebrew/brew or Homebrew/homebrew-core!


Error: You are using macOS 10.15.
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I tried MacPorts for installation:

sudo port install qt5

But it didn't work either, and I got this error:

Continue? [Y/n]: Y
--->  Fetching archive for qt5-qtsvg
--->  Attempting to fetch qt5-qtsvg-5.15.8_0.darwin_19.x86_64.tbz2 from https://packages.macports.org/qt5-qtsvg
--->  Attempting to fetch qt5-qtsvg-5.15.8_0.darwin_19.x86_64.tbz2 from https://fra.de.packages.macports.org/qt5-qtsvg
--->  Attempting to fetch qt5-qtsvg-5.15.8_0.darwin_19.x86_64.tbz2 from https://nue.de.packages.macports.org/qt5-qtsvg
--->  Configuring qt5-qtsvg
Error: Failed to configure qt5-qtsvg: configure failure: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_qt5/qt5-qtsvg/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there
is a bug.
Error: Processing of port qt5 failed

Answer 1

To install Qt5 on macOS Catalina, you can use Homebrew, a popular package manager for macOS. Follow these steps:

1. Install Homebrew: Open Terminal and run the following command:

   bash /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

2. Tap the Qt Tap: Tap the Qt tap to get access to the Qt formulas:

   bash brew tap cartr/qt5

3. Install Qt5: Install Qt5 using the following command:

   bash brew install qt@5

4. Set Environment Variables: Homebrew will provide instructions on how to set the necessary environment variables. Follow those instructions, or you can add the following lines to your shell profile file (e.g., ~/.bash_profile or ~/.zshrc): bash

   export PATH="/usr/local/opt/qt@5/bin:$PATH" export LDFLAGS="-L/usr/local/opt/qt@5/lib" export CPPFLAGS="-I/usr/local/opt/qt@5/include"

   After updating your profile, either restart your terminal or run source ~/.bash_profile (or the respective file for your shell).

5. Verify Installation: Check if Qt5 is installed successfully by running: bash

   qmake --version

This should display the version information of the installed Qt.

Remember to adapt the instructions if you're using a different shell or have a different setup.