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Re: Building XNU for ARM64
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Re: Building XNU for ARM64

  • Subject: Re: Building XNU for ARM64
  • From: Ethan Sherriff <email@hidden>
  • Date: Tue, 31 Oct 2017 20:44:11 +0000
  • Thread-topic: Building XNU for ARM64
I came up with this patch of the makefiles, it gets the build going but it
exits very early due to missing declarations and headers for ARM, and I haven’t
had the time to look at those yet.

Here are the contents of the patch:

--- xnu-4570.1.46/makedefs/MakeInc.def
+++ xnu-4570.1.46/makedefs/MakeInc.def
@@ -7,11 +7,11 @@
#

#
# Architecture Configuration options
#
-SUPPORTED_ARCH_CONFIGS := X86_64 X86_64H
+SUPPORTED_ARCH_CONFIGS := X86_64 X86_64H ARM64 ARM64

#
# Kernel Configuration options
#
SUPPORTED_KERNEL_CONFIGS = RELEASE DEVELOPMENT DEBUG PROFILE KASAN
@@ -20,10 +20,12 @@
# Machine Configuration options
#

SUPPORTED_X86_64_MACHINE_CONFIGS = NONE
SUPPORTED_X86_64H_MACHINE_CONFIGS = NONE
+SUPPORTED_ARM_MACHINE_CONFIGS = NONE
+SUPPORTED_ARM64_MACHINE_CONFIGS = NONE


#
# Setup up *_LC variables during recursive invocations
#
diff -rU5 xnu-4570.1.46/makedefs/MakeInc.top xnu-4570.1.46/makedefs/MakeInc.top
--- xnu-4570.1.46/makedefs/MakeInc.top
+++ xnu-4570.1.46/makedefs/MakeInc.top
@@ -85,11 +85,12 @@
#

override DEFAULT_I386_MACHINE_CONFIG := NONE
override DEFAULT_X86_64_MACHINE_CONFIG := NONE
override DEFAULT_X86_64H_MACHINE_CONFIG := NONE
+override DEFAULT_ARM_MACHINE_CONFIG := NONE
+override DEFAULT_ARM64_MACHINE_CONFIG := NONE
-

# This is typically never specified (TARGET_CONFIGS is used)
ifndef MACHINE_CONFIGS
MACHINE_CONFIGS        := DEFAULT
endif


I hope this helps, and good luck with building the rest!

Ethan
PureDarwin Developer

> On 31 Oct 2017, at 18:54, Terry Thibault <email@hidden> wrote:
>
> Hi all,
>
> Apple recently released the source for Darwin on ARM on their Github
> (https://github.com/apple/darwin-xnu). Going through and building the kernel
> as normal, using `make SDKROOT=macosx ARCH_CONFIGS=X86_64
> KERNEL_CONFIGS="RELEASE DEVELOPMENT DEBUG"` works fine. It'll build a kernel
> for the X86_64 architecture. However, when I specify ARCH_CONFIGS=ARM64, I
> get an error "Unsupported CURRENT_MACHINE_CONFIG".
>
> Has anyone else been able to build the XNU for ARM64?
>
> Thanks!
> Terry


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 >Building XNU for ARM64 (From: Terry Thibault <email@hidden>)

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