October 2024 - Darwin-kernel

Re: Looking for building instructions for xnu repo
by Jaikiran Pai via Darwin-kernel 17 Oct '24

17 Oct '24

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729171200; x=1729776000; darn=lists.apple.com; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=lm+1sHfpPHuXzEg0j0s7ZiuKgCld1xau+pTotK8wC5E=; b=Up4ezYcyKTJ0crMNMR/fq1f92mmBX0KT5NLqWmmnNt+yf4CqnYexMYe/UlWFCN4XrG j0irtt/D9TNYdjBMtrhbim2ALnnroa+ZqDrbBgVFVRF+EE6pn6rdBIMK/SxxUFI2KNxV OiO6wWCChsfAoc0/3VksRfC3b5IJmiUIFediI3PNkNS87eo2edBzrnPlE+J/CZJ45vl3 8UQMioyqezOkN5313KwuUYTh0THDQgxzefPmYiSOycr8CZO3679nHVPzC4k82wfPLsic UceJkAWmDA62sJvJV+/mc1iVW4pSXVq77rQvxY2AcaVK2QTf350E+S0Sxayt7aKLxW4H RbAw== User-agent: Mozilla Thunderbird Hello Ken, On 16/10/24 8:19 pm, Ken Hornstein wrote: I am looking for some inputs on building the xnu source that's published at https://github.com/apple-oss-distributions/xnu/. The README.md in that repo seems to indicate that it should be buidable locally https://github.com/apple-oss-distributions/xnu/blob/main/README.md. However, I have tried various times to get the build to work on my local macosx M1 but haven't been able to. It's been my experience that Apple isn't so great at updating that sort of documentation and you have to be prepared to do some grunt work in figuring out the missing pieces. But ... forgive me for chiding you for not at least trying a basic Google search, as the error you're getting about the missing "availability.pl" script seems relatively straightforward. A quick search (using "macos kernel availability.pl") for me finds the following recipies which should get you much closer: https://github.com/upx/upx/issues/612 https://kernelshaman.blogspot.com/2021/02/building-xnu-for-macos-112-intel-… Thank you both Ken and Shon for your inputs so far. -Jaikiran _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com I had actually searched when I run into that error. But my search (in duckduckgo) was literally "Unable to locate /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk//usr/local/libexec/availability.pl" and that hadn't yielded anything useful. But point taken, I should have searched more. This is very useful indeed. I am going to try out those steps and experiment a bit and see how it goes. I'll provide an update (hopefully about a successful build).

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Re: Looking for building instructions for xnu repo
by Ken Hornstein via Darwin-kernel 16 Oct '24

16 Oct '24

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com >I am looking for some inputs on building the xnu source that's published >at https://github.com/apple-oss-distributions/xnu/. The README.md >in that repo seems to indicate that it should be buidable locally >https://github.com/apple-oss-distributions/xnu/blob/main/README.md. >However, I have tried various times to get the build to work on my local >macosx M1 but haven't been able to. It's been my experience that Apple isn't so great at updating that sort of documentation and you have to be prepared to do some grunt work in figuring out the missing pieces. But ... forgive me for chiding you for not at least trying a basic Google search, as the error you're getting about the missing "availability.pl" script seems relatively straightforward. A quick search (using "macos kernel availability.pl") for me finds the following recipies which should get you much closer: https://github.com/upx/upx/issues/612 https://kernelshaman.blogspot.com/2021/02/building-xnu-for-macos-112-intel-… --Ken _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Looking for building instructions for xnu repo
by Shon Frazier via Darwin-kernel 16 Oct '24

16 Oct '24

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:content-type:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:subject:subject:to :to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; t=1729090028; x=1729176428; bh=fH/TJGuj2t11e8atd4aEAnJPF7ZB l+Clg+R+aQKQ8hI=; b=jQCMKUKxPi5u61pET6Qf76gm1ExwPsaMgTnI1zjRm1y2 ARhb6XK3A1sfD0espegchmCaXhdveKHFn9z338XzjLwlK2+ZiQ1knpFcmju2BNOn kphY42Jfy8LETaAe5RwDM47l8rbLiaEdhIB26OYcEB6Bknj2WCiVUwmw1m/GdWY0 lRm+PZPt6FpGo49UJwEoKY5WuSE/POjfSz++tRfJQwJ92ClC39FoFjIarTUdjV5j ivbr3MywtpwrDF2gRfxVGtmUWaA6TgnRL8t+ppUvs69JAupHWfKI7R7fZ6D1CEa+ iEVw8E8YsPxABo19ysI7g5+2hPo7DLhRHXwyLLsTpg== Feedback-id: i414946fb:Fastmail Install Xcode and point the SDK root to a macOS SDK with the Xcode bundle. I can’t get a path this moment, but that should get you started. On Wed, Oct 16, 2024, at 9:43 AM, Jaikiran Pai via Darwin-kernel wrote: > Hello everyone, > > I am looking for some inputs on building the xnu source that's published > at https://github.com/apple-oss-distributions/xnu/. The README.md in > that repo seems to indicate that it should be buidable locally > https://github.com/apple-oss-distributions/xnu/blob/main/README.md. > However, I have tried various times to get the build to work on my local > macosx M1 but haven't been able to. > > I initially tried with: > > make SDKROOT=/ > > and that runs into a lot of errors, the last one saying: > > "Could not determine xnu version from SDK or KDK! Set > RC_DARWIN_KERNEL_VERSION environment variable.. Stop." > > So I then find out what the RC_DARWIN_KERNEL_VERSION value is in > /System/Library/Extensions/System.kext/Info.plist and then launch the > build as follows: > > RC_DARWIN_KERNEL_VERSION=23.6.0 make SDKROOT=/ > > That too fails with an error and surprising it seems to have picked up > x86_64 as the architecture even though I am on macosx M1 (arm64). That > seems to contradict the README.md which states that it defaults to the > architecture of the current system. The build errors are: > > > CC mkmakefile.o > GENERATE kasan-blacklist-x86_64 > GENERATE kasan-blacklist-arm64 > GENERATE kcov-blacklist-arm64 > GENERATE kcov-blacklist-x86_64 > GENERATE bsd/sys/_symbol_aliasing.h > Unable to locate > /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk//usr/local/libexec/availability.pl > > (or not executable) > make[5]: *** [_symbol_aliasing.h] Error 1 > make[4]: *** [build_setup] Error 2 > make[3]: *** [build_setup_recurse_into_sys] Error 2 > make[2]: *** [build_setup_recurse_into_bsd] Error 2 > make[2]: *** Waiting for unfinished jobs.... > /xnu/SETUP/config/mkmakefile.c:701:6: warning: variable 'lpos' set but > not used [-Wunused-but-set-variable] > int lpos, len = 0; /* dvw: init to 0 */ > ^ > 1 warning generated. > LD config > CODESIGN config > make[1]: *** [build_setup_bootstrap_DEVELOPMENT^X86_64^NONE] Error 2 > > So I then decide to explicitly set the arch as follows: > > RC_DARWIN_KERNEL_VERSION=23.6.0 make SDKROOT=/ ARCH_CONFIGS=arm64 > > but that too fails (although this time it seems to have picked up arm > architecture): > > GENERATE bsd/sys/_symbol_aliasing.h > Unable to locate > /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk//usr/local/libexec/availability.pl > > (or not executable) > make[5]: *** [_symbol_aliasing.h] Error 1 > make[4]: *** [build_setup] Error 2 > make[3]: *** [build_setup_recurse_into_sys] Error 2 > make[2]: *** [build_setup_recurse_into_bsd] Error 2 > make[2]: *** Waiting for unfinished jobs.... > make[1]: *** [build_setup_bootstrap_DEVELOPMENT^ARM64^VMAPPLE] Error 2 > make: *** [all] Error 2 > > > So, are the instructions in the README.md not up-to-date? Is there a way > I can build that repo locally? > > -Jaikiran > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/darwin-kernel/shon%40fyrestead.com > > This email sent to shon(a)fyrestead.com > _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Looking for building instructions for xnu repo
by Jaikiran Pai via Darwin-kernel 16 Oct '24

16 Oct '24

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729086207; x=1729691007; darn=lists.apple.com; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=T+tEFwuEHDy5v2p+00pTQ2hxCJp/syZ5sQwSsnB1Lz4=; b=G9dV/dYUnb3rzLoIb+ZA5s5fxuh3Ga3ggXYrt8CWv9Tsyq5LrWrQ17ylqMigTP1quH 8fxZ7BwObsi7Qg2LhPlJSiRoNkQtAoGpBj8UMLclrKmRxFuwwBt2TGVm9xg/Zhvg2l2n SO7Y5ZsU/fu4n45TGzBH+4vbgfAmixNFrMNUMxwB7w38w3n33scou4vGWs0YTl4Rf2Rc 5KXqXVuQMePdBNcfxHtaStA2Yp7Ynj8UdAbfgFHP2WecNIi9t9Y9uo6cm6qjGDg96mL7 0s8o7VPqKez73J5J6L38VVcauRKnWOBYxgYxqoNuJMGYYu3plBJao0bqkSSnFpVWiW2W W7BA== User-agent: Mozilla Thunderbird Hello everyone, I initially tried with: make SDKROOT=/ and that runs into a lot of errors, the last one saying: RC_DARWIN_KERNEL_VERSION=23.6.0 make SDKROOT=/ CC mkmakefile.o GENERATE kasan-blacklist-x86_64 GENERATE kasan-blacklist-arm64 GENERATE kcov-blacklist-arm64 GENERATE kcov-blacklist-x86_64 GENERATE bsd/sys/_symbol_aliasing.h make[5]: *** [_symbol_aliasing.h] Error 1 make[4]: *** [build_setup] Error 2 make[3]: *** [build_setup_recurse_into_sys] Error 2 make[2]: *** [build_setup_recurse_into_bsd] Error 2 make[2]: *** Waiting for unfinished jobs.... int lpos, len = 0; /* dvw: init to 0 */ ^ 1 warning generated. LD config CODESIGN config make[1]: *** [build_setup_bootstrap_DEVELOPMENT^X86_64^NONE] Error 2 So I then decide to explicitly set the arch as follows: RC_DARWIN_KERNEL_VERSION=23.6.0 make SDKROOT=/ ARCH_CONFIGS=arm64 GENERATE bsd/sys/_symbol_aliasing.h make[5]: *** [_symbol_aliasing.h] Error 1 make[4]: *** [build_setup] Error 2 make[3]: *** [build_setup_recurse_into_sys] Error 2 make[2]: *** [build_setup_recurse_into_bsd] Error 2 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [build_setup_bootstrap_DEVELOPMENT^ARM64^VMAPPLE] Error 2 make: *** [all] Error 2 -Jaikiran _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com I am looking for some inputs on building the xnu source that's published at https://github.com/apple-oss-distributions/xnu/. The README.md in that repo seems to indicate that it should be buidable locally https://github.com/apple-oss-distributions/xnu/blob/main/README.md. However, I have tried various times to get the build to work on my local macosx M1 but haven't been able to. "Could not determine xnu version from SDK or KDK! Set RC_DARWIN_KERNEL_VERSION environment variable.. Stop." So I then find out what the RC_DARWIN_KERNEL_VERSION value is in /System/Library/Extensions/System.kext/Info.plist and then launch the build as follows: That too fails with an error and surprising it seems to have picked up x86_64 as the architecture even though I am on macosx M1 (arm64). That seems to contradict the README.md which states that it defaults to the architecture of the current system. The build errors are: Unable to locate /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk//usr/local/libexec/availability.pl (or not executable) /xnu/SETUP/config/mkmakefile.c:701:6: warning: variable 'lpos' set but not used [-Wunused-but-set-variable] but that too fails (although this time it seems to have picked up arm architecture): Unable to locate /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk//usr/local/libexec/availability.pl (or not executable) So, are the instructions in the README.md not up-to-date? Is there a way I can build that repo locally?

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