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How to build - Mac OS.md

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Building PrusaSlicer on Mac OS

To build PrusaSlicer on Mac OS, you will need the following software:

  • XCode
  • CMake
  • git
  • gettext

XCode is available through Apple's App Store, the other three tools are available on brew (use brew install cmake git gettext to install them).

Dependencies

PrusaSlicer comes with a set of CMake scripts to build its dependencies, it lives in the deps directory. Open a terminal window and navigate to PrusaSlicer sources directory and then to deps. Use the following commands to build the dependencies:

mkdir build
cd build
cmake ..
make

This will create a dependencies bundle inside the build/destdir directory. You can also customize the bundle output path using the -DDESTDIR=<some path> option passed to cmake.

Warning: Once the dependency bundle is installed in a destdir, the destdir cannot be moved elsewhere. (This is because wxWidgets hardcodes the installation path.)

FIXME The Cereal serialization library needs a tiny patch on some old OSX clang installations USCiLab/cereal#339 (comment)

Building PrusaSlicer

If dependencies are built without errors, you can proceed to build PrusaSlicer itself. Go back to top level PrusaSlicer sources directory and use these commands:

mkdir build
cd build
cmake .. -DCMAKE_PREFIX_PATH="$PWD/../deps/build/destdir/usr/local"

The CMAKE_PREFIX_PATH is the path to the dependencies bundle but with /usr/local appended - if you set a custom path using the DESTDIR option, you will need to change this accordingly. Warning: the CMAKE_PREFIX_PATH needs to be an absolute path.

The CMake command above prepares PrusaSlicer for building from the command line. To start the build, use

make -jN

where N is the number of CPU cores, so, for example make -j4 for a 4-core machine.

Alternatively, if you would like to use XCode GUI, modify the cmake command to include the -GXcode option:

cmake .. -GXcode -DCMAKE_PREFIX_PATH="$PWD/../deps/build/destdir/usr/local"

and then open the PrusaSlicer.xcodeproj file. This should open up XCode where you can perform build using the GUI or perform other tasks.

Note on Mac OS X SDKs

By default PrusaSlicer builds against whichever SDK is the default on the current system.

This can be customized. The CMAKE_OSX_SYSROOT option sets the path to the SDK directory location and the CMAKE_OSX_DEPLOYMENT_TARGET option sets the target OS X system version (eg. 10.14 or similar). Note you can set just one value and the other will be guessed automatically. In case you set both, the two settings need to agree with each other. (Building with a lower deployment target is currently unsupported because some of the dependencies don't support this, most notably wxWidgets.)

Please note that the CMAKE_OSX_DEPLOYMENT_TARGET and CMAKE_OSX_SYSROOT options need to be set the same on both the dependencies bundle as well as PrusaSlicer itself.

Official macOS PrusaSlicer builds are currently (as of PrusaSlicer 2.5) built against SDK 10.12 to ensure compatibility with older Macs.

Warning: XCode may be set such that it rejects SDKs bellow some version (silently, more or less). This is set in the property list file

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Info.plist

To remove the limitation, simply delete the key MinimumSDKVersion from that file.

TL; DR

Works on a fresh installation of MacOS Catalina 10.15.6

  • Install brew:

  • Open Terminal

  • Enter:

brew update
brew install cmake git gettext
brew upgrade
git clone https://github.com/prusa3d/PrusaSlicer/
cd PrusaSlicer/deps
mkdir build
cd build
cmake ..
make
cd ../..
mkdir build
cd build
cmake .. -DCMAKE_PREFIX_PATH="$PWD/../deps/build/destdir/usr/local"
make
src/prusa-slicer