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This page is a translated version of the page Development/BuildingOnMac and the translation is 0% complete.

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This page describes how to set up a build environment for LibreOffice on macOS 10.14.4. Building master requires Xcode 11.3 or later, which requires macOS 10.14.4 or later.


  1. Install Xcode. The latest version of Xcode is available as a free purchase in the Mac App Store. Previous and development versions of Xcode can be downloaded from
    • Download the 11.3 .xip file from here
    • Unpack to
    • Rename it to
    • Run: sudo xcode-select --switch ~/Downloads/ ( To switch back the the normal Xcode, run: sudo xcode-select --switch /Applications/ )
  2. Select the Xcode's active developer directory:
    sudo xcode-select -switch /Applications/
  3. You need to first accept the Xcode EULA by either launching Xcode or running the following command:
    sudo xcodebuild -license
  4. Install Apple's Command Line Developer Tools by running the following command:
    sudo xcode-select --install
  5. Download and install a JDK (Java SE Development Kit): Oracle's Java SE Development Kit

Quick Setup

See Development/lode.

Building Tips

See platform-independent tips at Development/GenericBuildingHints

Building in a ssh session

In some cases it seems that if you are building in a ssh session, some unit tests fail unless you also have a windowing session open to the machine, either on the physical console or through Screen Sharing.


Building LibreOffice takes time, a lot of time. Exactly how much depends on how powerful your machine is. But there are tools you can use to speed-up things.


ccache is short for compiler cache - and it is exactly that. It saves tons of time by not running the actual compiler when little has changed in the source codebetween two builds. But note that unless you explicitly do "make clean" often, that is not typically the case, and using ccache just because you think it maybe helps is not a good idea.

Get it here: [1]

Build it like this:

make install

You will also need to ensure the following is defined, e.g. in .bashrc, if using ccache (see Development/Building LibreOffice with Clang for full details), otherwise clang will report errors and show unnecessary warnings:


The default cache limit (5 GB) is not large enough to be useful for a LibreOffice build, but you can increase it:

ccache --max-size 16 G && ccache -s

Upgrading to a recent macOS on unsupported machines

With macOS Mojave Patcher and Catalina Patcher tools it is possible to install current macOSes on older, unsupported machines, see this video for details. Read Known issues on the tool's site, and try at your own risk.

Build the UNO SDK

As of the master, to build the UNO SDK (i.e., drop the --disable-odk configure switch), you need to have Doxygen installed so that HTML documentation for the C++ UNO interface can be generated.

One option is to install Doxygen from its website and make sure the doxygen executable is found on the PATH, or specify its exact location via --with-doxygen=pathname configure switch.

Another option is to configure --without-doxygen, in which case the HTML documentation for the C++ UNO interface will be missing from the UNO SDK being built.

See also