1. Download and install the following:
   • Qt Creator from the Qt project or your distribution packages.
   • Qt SDK version 5.15
   • Shotcut SDK (1.6 GB, current version 22.12.21, Intel build)
     Extract it to $HOME/Projects
2. Extract the Shotcut SDK .txz file from the folder $HOME/Projects.
3. Edit the includedir and libdir keys in the mltframework-7.pc and mlt++-7.pc files in $HOME/Projects/Shotcut/Contents/Frameworks/lib/pkgconfig to have the proper prefix: $HOME/Projects/Shotcut/Contents/Frameworks/ (you need to expand $HOME yourself).
4. Create a symbolic link $HOME/Projects/Shotcut.app pointing to $HOME/Projects/Shotcut.
5. In Qt Creator open $HOME/Projects/Shotcut/src/shotcut/CMakeLists.txt.
6. In the Shotcut project configuration screen find Build Settings.
7. Under Build Environment, add or edit the key/value pairs:
   • PKG_CONFIG_PATH = ${HOME}/Projects/Shotcut/Contents/Frameworks/lib/pkgconfig
8. Under CMake > Current Configuration add or edit the key/value pairs:
   • CMAKE_INSTALL_PREFIX = ~/Projects
   • CMAKE_INSTALL_RPATH = @executable_path/../Frameworks
   • CMAKE_INSTALL_RPATH_USE_LINK_PATH = ON

   Alternatively, in Addtional CMake options enter -DCMAKE_INSTALL_PREFIX=~/Projects -DCMAKE_INSTALL_RPATH=@executable_path/../Frameworks -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=ON and click Run CMake.

9. In the Shotcut project configuration screen find Run Settings.
   • Under Run > Run configuration click Add > Custom Executable > Executable add $HOME/Projects/Shotcut/Contents/MacOS/Shotcut
   • Under Run Environment > Details add the following environment variables:
   • Set QML2_IMPORT_PATH to ${QTDIR}/qml
   • Set QT_PLUGIN_PATH to ${QTDIR}/plugins

1. After clicking Run, you can confirm the newly built executable is the one that is running from the About dialog: the version will be today’s date.

Rebuilding Dependencies

You still might need to get some dependencies from MacPorts (or Homebrew, untested).

You can use the following command to revise all of the pkg-config files to your installation path:

for f in ~/Projects/Shotcut/Contents/Frameworks/lib/pkgconfig/*.pc; do sed -i .bak -e "s,/Users/ddennedy/shotcut-sdk/shotcut/build,$HOME/Projects/Shotcut/Contents/Frameworks," -e 's,Frameworks/lib,Frameworks,' -e 's,${exec_prefix}/lib,${exec_prefix},' $f ; done

You might want to put the following into ~/.profile or a setup script:

export PATH="$HOME/Projects/Shotcut/Contents/MacOS:$PATH"
export QTDIR="$HOME/Qt/5.15.2/clang_64"
export PKG_CONFIG_PATH="$HOME/Projects/Shotcut/Contents/Frameworks/lib/pkgconfig"
export CFLAGS="-I/opt/local/include -DRELOCATABLE"
export CXXFLAGS="$CFLAGS"
export LDFLAGS="-L/opt/local/lib/libomp"

Sometimes, you need to make distclean and re-run configure to make a clean in-tree (non-shadow) build. MLT has a ./reconfigure script that invokes the configure with the same arguments as the previous run.

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