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macos: new Build_Instructions.md
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Eric Wasylishen
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# Building QuakeSpasm
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# macOS Build
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## Prerequisites
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Since Apple has dropped support for Mac OS 10.4 and PowerPC from XCode 4, you need to hack your developer tools a bit. You need XCode 3.2.6 from here:
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http://connect.apple.com/cgi-bin/WebObjects/MemberSite.woa/wa/getSoftware?bundleID=20792
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Tested on macOS 10.15.7, Xcode 12.4, x86_64.
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Then, you need the XCode 4.2 installer from the Mac App Store. Don't start the installation yet.
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1. Run `setup-vcpkg.sh` (fetches + builds vorbis, opus, zlib from vcpkg, as static libraries.)
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If you already have XCode 4 installed, you must uninstall it using the following command from a terminal:
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The Opus .dylibs included with QuakeSpasm lack the encoder, which is needed by `snd_voip.c`, necessitating building it from source.
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sudo /<XCode 4 path>/Library/uninstall-devtools --mode=all
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2. For a release build, run `xcodebuild -project QuakeSpasm.xcodeproj -target QuakeSpasm-Spiked-SDL2`
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You must reboot your machine after that.
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Now you need to first install XCode 3.2.6 and then XCode 4.2. Then, you will add support for Mac OS 10.4 and 10.5 as well as PowerPC from XCode 3 to XCode 4. But first things first:
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## Limitations
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### Install XCode 3
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- SDL 1.2 is no longer supported
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If you are on Mac OS 10.7 (Lion), you must launch the XCode 3.2.6 installer from the terminal like so:
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- Some code assumes SDL 2.0+ (e.g. `VID_UpdateCursor`)
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- Only x86_64 is currently supported
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export COMMAND_LINE_INSTALL=1
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- arm64 should be possible in theory, just needs someone with an M1 mac to implement and test it.
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open "/Volumes/Xcode and iOS SDK/Xcode and iOS SDK.mpkg"
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- Minimum macOS version raised to 10.9; PowerPC and i386 dropped
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- This is the lowest version I can target with macOS 10.15.7, Xcode 12.4
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Otherwise, the installation will fail. Do not install "System Tools" or "Unix Development". You probably don't want to install the iOS SDKs either. You do want to install "Mac OS X 10.4 SDK" however - this is essential. Set "/XCode3" as the destination folder.
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### Install XCode 4
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Launch the installer from the App Store. Be aware that on some systems, you need to launch the installer manually: Right Click on "Install Xcode" and select Show Package Contents. Then navigate to "Contents/Resources" and double click on "Xcode.mpkg". Select "/XCode4" as the destination folder.
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### Restore 10.4 and 10.5 SDK support
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Open a terminal and run the following commands:
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cd /XCode4/SDKs
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sudo ln -s /Xcode3/SDKs/MacOSX10.4u.sdk .
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sudo ln -s /Xcode3/SDKs/MacOSX10.5.sdk .
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### Restore GCC 4.0 support (which gives you PowerPC support)
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In your terminal, run the following commands:
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cd /XCode4/usr/bin
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sudo ln -s /Xcode3/usr/bin/*4.0* .
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sudo ln -s "/XCode3/Library/Xcode/Plug-ins/GCC 4.0.xcplugin" "/XCode4/Library/Xcode/PrivatePlugIns/Xcode3Core.ideplugin/Contents/SharedSupport/Developer/Library/Xcode/Plug-ins"
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sudo mkdir -p /XCode4/usr/libexec/gcc
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sudo ln -sf /XCode3/usr/libexec/gcc/powerpc-apple-darwin10 /XCode4/usr/libexec/gcc/powerpc-apple-darwin10
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sudo mkdir -p /XCode4/usr/lib/gcc
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sudo ln -sf /XCode3/usr/lib/gcc/powerpc-apple-darwin10 /XCode4/usr/lib/gcc/powerpc-apple-darwin10
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This should be it. The guides in the link collection at the end of this documents contain information about changing the "as" command also, but I didn't have to do this on my systems. If you run into problems, let me know: kristian.duske@gmail.com
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## Building QuakeSpasm
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Now you can build QuakeSpasm. Simply open the project file using XCode 4.2 and make sure that "QuakeSpasm > My Mac 64-bit" is selected as the scheme in the toolbar. Select "Product > Run" from the menu to run and debug QuakeSpasm. This will not produce a universal binary however. To produce a universal binary for Intel 64bit, Intel 32bit and PowerPC 32bit, you need to select "Product > Archive" from the menu. This will create an application archive that contains the universal binary.
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# Useful Links
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- XCode 3.2.6:
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http://connect.apple.com/cgi-bin/WebObjects/MemberSite.woa/wa/getSoftware?bundleID=20792
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- Install XCode 3 on 10.7:
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http://anatomicwax.tumblr.com/post/8064949186/installing-xcode-3-2-6-on-lion-redux
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- Restore support for 10.4, 10.5 and PPC to XCode 4.0:
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http://stackoverflow.com/questions/5333490/how-can-we-restore-ppc-ppc64-as-well-as-full-10-4-10-5-sdk-support-to-xcode-4
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- Scripts that automate the above:
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https://github.com/thinkyhead/Legacy-XCode-Scripts
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# Author
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Kristian Duske, kristian.duske@gmail.com
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