Guide Building XNU 16.7 (xnu-3789.70.16)

For Building XNU 16.7 from start to finish Requirements macOS 10.12.6 and Xcode 8.3.3

These must be done in order or it will not build

Open terminal.app // copy each command in as you go.

Creating workspace

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mkdir -p ~/Desktop/xnu_build

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cd ~/Desktop/xnu_build

Curling needed Sources

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curl -O https://opensource.apple.com/tarballs/dtrace/dtrace-209.50.12.tar.gz && 
curl -O https://opensource.apple.com/tarballs/AvailabilityVersions/AvailabilityVersions-26.50.4.tar.gz && 
curl -O https://opensource.apple.com/tarballs/xnu/xnu-3789.70.16.tar.gz && 
curl -O https://opensource.apple.com/tarballs/libdispatch/libdispatch-703.50.37.tar.gz && 
curl -O https://opensource.apple.com/tarballs/libplatform/libplatform-126.50.8.tar.gz

Extracting and Removing Tar.gz files

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for file in *.tar.gz; do tar -zxf $file; done && rm -f *.tar.gz

Building Dtrace's CTF"s Bianries

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cd dtrace-209.50.12

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mkdir -p obj sym dst

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xcodebuild install -target ctfconvert -target ctfdump -target ctfmerge ARCHS="x86_64" SRCROOT=$PWD OBJROOT=$PWD/obj SYMROOT=$PWD/sym DSTROOT=$PWD/dst

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sudo ditto $PWD/dst/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain   

Installing Availability

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cd ../AvailabilityVersions-26.50.4/ 

mkdir -p dst   

make install SRCROOT=$PWD DSTROOT=$PWD/dst

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sudo ditto $PWD/dst/usr/local `xcrun -sdk macosx -show-sdk-path`/usr/local

Installing Headers to build libfirehose_kernel.a for XNU

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cd ../xnu-3789.70.16/

mkdir -p BUILD.hdrs/obj BUILD.hdrs/sym BUILD.hdrs/dst

make installhdrs SDKROOT=macosx ARCH_CONFIGS=X86_64 SRCROOT=$PWD OBJROOT=$PWD/BUILD.hdrs/obj SYMROOT=$PWD/BUILD.hdrs/sym DSTROOT=$PWD/BUILD.hdrs/dst

sudo xcodebuild installhdrs -project libsyscall/Libsyscall.xcodeproj -sdk macosx ARCHS='x86_64 i386' SRCROOT=$PWD/libsyscall OBJROOT=$PWD/BUILD.hdrs/obj SYMROOT=$PWD/BUILD.hdrs/sym DSTROOT=$PWD/BUILD.hdrs/dst   

sudo ditto BUILD.hdrs/dst `xcrun -sdk macosx -show-sdk-path`  

Copying libplatform source needed for libfirehose_kernel.a

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cd ../libplatform-126.50.8

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sudo ditto $PWD/include `xcrun -sdk macosx -show-sdk-path`/usr/local/include   

Building libfirehose_kernel.a

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cd ../libdispatch-703.50.37

mkdir -p BUILD.hdrs/obj BUILD.hdrs/sym BUILD.hdrs/dst

sudo xcodebuild install -project libdispatch.xcodeproj -target libfirehose_kernel -sdk macosx ARCHS='x86_64 i386' SRCROOT=$PWD OBJROOT=$PWD/obj SYMROOT=$PWD/sym DSTROOT=$PWD/dst

sudo ditto $PWD/dst/usr/local `xcrun -sdk macosx -show-sdk-path`/usr/local

Building XNU

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cd ../xnu-3789.70.16/

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make SDKROOT=macosx ARCH_CONFIGS=X86_64 KERNEL_CONFIGS=RELEASE