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74 lines
3.7 KiB
Markdown
74 lines
3.7 KiB
Markdown
# Build MacOS
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*Last Updated on October 19, 2021*
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Please read the [general build guide](BUILD.md) for information on dependencies required for all platforms. This will include the necessary environment variables to customize your build. Only macOS specific instructions are found in this document.
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## Prerequisites
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### CMake, OpenSSL, and NPM
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[Homebrew](https://brew.sh/) is an excellent package manager for macOS. It makes the installation of some Vircadia dependencies very simple.
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```bash
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brew install cmake openssl npm
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```
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**Note:** You can also download alternative CMake versions from [Github](https://github.com/Kitware/CMake/releases) if needed.
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### Python 3
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Download an install Python 3.6.6 or higher from [here](https://www.python.org/downloads/).
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Execute the `Update Shell Profile.command` script that is provided with the installer.
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### MacOS SDK
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You will need version `10.12` of the macOS SDK for building, otherwise you may have crashing or other unintended issues due to the deprecation of OpenGL on macOS. You can get that SDK from [here](https://github.com/phracker/MacOSX-SDKs). You must copy it in to your Xcode SDK directory, e.g.
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```bash
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cp -rp ~/Downloads/MacOSX10.12.sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
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```
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### OpenSSL
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Assuming you've installed OpenSSL using the homebrew instructions above, you'll need to set `OPENSSL_ROOT_DIR` so CMake can find your installations.
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For OpenSSL installed via homebrew, set `OPENSSL_ROOT_DIR` via `export OPENSSL_ROOT_DIR=/usr/local/opt/openssl` or by appending `-DOPENSSL_ROOT_DIR=/usr/local/opt/openssl` to `cmake`.
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## Generate and Build
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You can choose to use either Unix Makefiles or Xcode.
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### Xcode
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You can ask CMake to generate Xcode project files instead of Unix Makefiles using the `-G Xcode` parameter after CMake. You will need to select the Xcode installation in the terminal first if you have not done so already.
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```bash
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sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
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cmake ../ -DCMAKE_OSX_SYSROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk" -DCMAKE_OSX_DEPLOYMENT_TARGET=10.12 -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl -G Xcode -DOSX_SDK=10.12 ..
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```
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After running CMake, you will have the make files or Xcode project file necessary to build all of the components. Open the `vircadia.xcodeproj` file, choose `ALL_BUILD` from the Product > Scheme menu (or target drop down), and click Run.
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If the build completes successfully, you will have built targets for all components located in the `build/${target_name}/Debug` directories.
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### make
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Run CMake.
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```bash
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cmake -DCMAKE_OSX_SYSROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk" -DCMAKE_OSX_DEPLOYMENT_TARGET=10.12 -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl -DOSX_SDK=10.12 ..
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```
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You can append `-j4` to assign more threads to build with. The number indicates the number of threads, e.g. 4.
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To package the installation, you can simply run `make package` afterwards.
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## FAQ
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1. **Problem:** Running the scheme `interface.app` from Xcode causes a crash for Interface related to `libgl`.
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1. **Cause:** The target `gl` generates a binary called `libgl`. A macOS `libGL.framework` item gets loaded instead by Xcode.
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2. **Solution:** In the Xcode target settings for `libgl`, set the version to `1.0.0`.
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2. **Problem:** CMake complains about Python 3 being missing.
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1. **Cause:** CMake might be out of date.
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2. **Solution:** Try updating your CMake binary with command `brew upgrade cmake`, or by downloading and running a newer CMake installer, depending on how you originally installed CMake. Please keep in mind the recommended CMake versions noted above.
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