MacOS Prerequisites:

You will need Xcode commandline tools installed. Xcode can be downloaded from the Apple Store for your Mac, or you can install just the command line tools by opening Terminal and typing xcode-select –install. For this example I used Xcode 16.2 on MacOS 15 Sequoia

Obtain cmake v4.03 from https://github.com/Kitware/CMake/releases/download/v4.0.3/cmake-4.0.3.tar.gz Unpack the cmake source archive with Finder and follow the instructions in the README.rst to build and install cmake on MacOS. This will be in Terminal by using cd to change into the cmake-4.0.3 directory and running the following command:

./bootstrap && make && sudo make install

NOTE: you can also install cmake with homebrew. Check the homebrew documentation on how to get homebrew and do this, if desired.

Getting the Libraries on MacOS (updated for building master)

Below are the required libraries and tested versions for a JS8Call-improved build on MacOS

libusb-1.0.29 (NOTE: requires a version patched for MacOS 26, which is available in our pre-built libraries)
Hamlib-4.7.0
fftw-3.3.10
boost_1_88_0
Qt 6.9.3 - this one is non-trivial and is a monster. Failed builds are common and will likely discourage you from trying a JS8Call build. Recommendations below......
There is two ways to obtain the libraries and frameworks to compile JS8Call; either build them yourself or fetch the pre-built libraries.

If you wish to build the libraries yourself you can clone this repository and follow the developer instructions. You can check out one of the MacOS branches with git switch branch-name and follow the instructions to build your libraries. It's optional to build Qt with the developer library. I recommend building the base libraries and obtaining Qt 6.9.3 with the Online Installer from the Qt Group for Intel builds. For Apple silicon builds you must build the Qt libraries yourself.

Pre-built libraries without Qt6 can be downloaded here
In Terminal create the directory structure to build JS8Call-improved with the following command. mkdir ~/development && mkdir ~/development/JS8Call
Download the library for your architecture with the above link and drag it to the project root ~development/JS8Call in Finder. Double click on the archive to unpack it. It will create a folder called js8lib.

Building JS8Call-improved on MacOS

We'll now fetch the JS8Call-improved sourcecode with git:

cd ~/development/JS8Call && git clone https://github.com/JS8Call-improved/JS8Call-improved.git src

Your libraries are now in ~/development/JS8Call/js8lib and the JS8Call source code is in ~/development/JS8Call/src. You need to copy the library folder to /usr/local/ before you proceed. To do this at the command prompt cd ~/development/JS8Call and use

sudo cp -r js8lib /usr/local/

If you obtain Qt using the online installer for an Intel build it is recommended to install it in ~/development/Qt and use Qt 6.9.3. Other versions of Qt may cause audio issues or inject other undesireable bugs. To prevent issues with missing libraries I recommend selecting the checkbox for Qt 6.9.3 and download everything for it. After JS8Call is built you don't need to keep this library on your system and it can be removed with the Qt Maintenance Tool which is found inside the Qt folder.

Building Qt6 from source for Apple silicon is non-trivial. Consult the Qt documentation on how to build it with FFmpeg audio support. This will require building and installing FFmpeg first, as per the Qt documentation here. Once FFmpeg is compiled and installed, you can then clone the Qt repository with a series of commands:

mkdir ~/development/Qt6.9.3 && mkdir ~/development/Qt6_build

Then fetch Qt 6 with:

cd ~/development/Qt6_build && git clone https://github.com/qt/qt5.git Qt6

Now you need to initialize your Qt6 repository:

cd ~/development/Qt6_build/Qt6 && git checkout 6.9.3

./init-repository --module-subset=qtbase,qtshadertools,qtmultimedia,qtimageformats,qtserialport,qtsvg

Now you must configure and set up your Qt6 build with:

cd .. && mkdir qt6-build && cd qt6-build

Configure the build:

../Qt6/configure -prefix ~/development/Qt6.9.3 -submodules qtbase,qtshadertools,qtimageformats,qtserialport,qtsvg,qtmultimedia -ffmpeg-dir /usr/local/ffmpeg -ffmpeg-deploy

Now build it and install it. This will install Qt in ~/development/Qt6.9.3

cmake --build . --parallel && cmake --install .

The Qt6.9.3 library that you just built can be used over and over again to build JS8Call. Since the Qt sources are huge, you can delete the ~/development/Qt6-build source directory for Qt6.

Now we can finally proceed with building JS8Call. The following command set will have to be modified depending on if you are doing and Intel build using Qt from the online installer, or are doing an Apple silicon build with Qt built from source code. The command as shown is for the Apple silicon build - note the location of the Qt library and adjust accordingly for an Intel build.

cd ~/development/JS8Call/src && mkdir build && cd build \
&& cmake -DCMAKE_PREFIX_PATH="/usr/local/js8lib;~/development/JS8Call/Qt6.9.3" -DCMAKE_BUILD_TYPE=Release .. \
&& cmake --build .

An issue you may run into is that MacOS apps do not request permissions to use audio input correctly unless the app and libraries are signed with an Apple developer certificate. There is really no way around this. If your build keeps continually asking for permissions to use audio input you can create a free signing certificate that will allow the app to run on your local computer, or other computers with the same AppleID. This free signing certificate can be created from within Xcode if you have an AppleID that uses an icloud email account. Consult Apple's developer documentation here on how to do this.

If all goes well, you should end up with a JS8Call.app application in the build directory. Test by typing open ./JS8Call.app. Once you're satisfied with the test results, drag JS8Call.app to /Applications.