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How to build Mozc on OS X

System Requirements

Only 64-bit macOS 10.9 and later versions are supported.

Software Requirements

Building on Mac requires the following software.

If you don't need to run gui tools like about dialog, config dialog, or dictionary tool, you can omit installing Qt. Candidate window still shows without Qt. See below for the detailed information.

Get the Code

You can download Mozc source code as follows:

mkdir -p ~/work
cd ~/work
git clone https://github.com/google/mozc.git -b master --single-branch --recursive

Compilation

First, you'll need to generate Xcode project using a tool called GYP.

cd ~/work/mozc/src
GYP_DEFINES="mac_sdk=10.11 mac_deployment_target=10.9" python build_mozc.py gyp --noqt

You can customize the SDK version and target OS version here. Then, build Mozc.app and necessary files:

python build_mozc.py build -c Release mac/mac.gyp:GoogleJapaneseInput mac/mac.gyp:gen_launchd_confs

Executables

Executables are written in ~/work/mozc/src/out_mac/Release for Release builds, and ~/work/mozc/src/out_mac/Debug for Debug builds. For instance, you'll have ~/work/mozc/src/out_mac/Release/Mozc.app once the build finishes successfully in the Release mode.

GUI tools

To build GUI tools, you need to specify --qtdir instead of --noqt.

GYP_DEFINES="mac_sdk=10.11 mac_deployment_target=10.9" python build_mozc.py gyp --qtdir ~/myqt

In the above case, ~/myqt should contain Qt's sources, headers and libraries built from configure and make.

Then you can build executables defined in gui/gui.gyp. Here is an example to build the config dialog.

python build_mozc.py build -c Release gui/gui.gyp:config_dialog_main

These executables are linked with the libraries in ~/myqt. You might want to change it with install_name_tool.

Clean up the Tree

To clean up the tree, execute the following. This will remove executables and intermediate files like object files, generated source files, project files, etc.

python build_mozc.py clean

Install built packages

Mozc doesn't have installer mpkg files. You can just place the created Mozc.app into /Library/Input Methods, and out_mac/DerivedSources/Release/mac/org.mozc.inputmethod.Japanese.Converter.plist and org.mozc.inputmethod.Japanese.Renderer.plist into /Library/LaunchAgents, and then log in again. Then it works well.

sudo cp -r out_mac/Release/Mozc.app /Library/Input\ Methods/
sudo cp out_mac/DerivedSources/Release/mac/org.mozc.inputmethod.Japanese.Converter.plist /Library/LaunchAgents
sudo cp out_mac/DerivedSources/Release/mac/org.mozc.inputmethod.Japanese.Renderer.plist /Library/LaunchAgents