Here are some hints of what they are doing to process the original sources:
https://opensource.apple.com/source/hfs/hfs-366.1.1/make_ope...
# Check for remaining bad file names
BADFILES=`find . \( -name "*.arm*" -o -name "arm*" \) | xargs echo`;
...
# Check for remaining bad file contents
if grep -iEr '([^UD_]_?_OPEN_SOURCE_|XNU_HIDE_SEED|XNU_HIDE_HARDWARE|CONFIG_EMBEDDED)' .; then> MIRROR ONLY, UNOFFICIALLY
Someone took it and uploaded it to GitHub. This was not published by Apple. Also has not been updated in years.
../tdi/tcpip/tcp/tcpsend.c:// STUPID FUCKING COMPILER generates incorrect code for this.
../fastfat/allocsup.c:// God knows what state we left the disk allocation in.
../dd/histgram/cmd/perfhist/perfhist.c:// the heck? we are gods anyways!
../nthals/halntp/mips/xxinitnt.c:// to the HAL by the NT god. Hail Caesar!
../w32/ntgdi/client/dcquery.c:// if cjotma == 0, this is HONEST to God unicode font, can not convert
../w32/ntgdi/fondrv/tt/ttfd/fontfile.h:// honest to God msft unicode font
../w32/ntgdi/fondrv/tt/ttfd/tt.h:// uint16 reservedPad; // only God knows why
../se/ctlpcqos.c:// Appease the compiler Gods.
../cntfs/create.c:// Here is the "M A R K [REDACTED]" hack from hell.
../afd/disconn.c:// Hack-O-Rama. TDI has a fundamental flaw in that it is often impossible
../afd/disconn.c:// Yet another hack to keep it from crashing
../fastfat/read.c:// Deal with stupid people who open the volume DASD with
../afd/recvdg.c:// Bomb off if the user is trying to do something stupid, like
> to the HAL by the NT god. Hail Caesar!
/*
* Author: Avadis Tevanian, Jr. */
*/
But I'd argue that beyond code, probably his most important Apple role was establishing a steady release schedule. After the disasters of the Pink (later spun off as Taligent), Copland and Gershwin megaprojects, Avie managed to get Apple to focus on making small steady releases.
And while MacOS X was a megaproject, it too was released in steady steps: Rhapsody, Mac OS X Server 1.0, MacOS X Public Beta and then finally Mac OS X 10.0
Looks like they've only released the x86_64 and x86 versions of the code? I don't see any ARM in there.
Anyways, found gems like this [1]:
I hope to leave a legacy like this someday, hopefully someone will appreciate the author's comments 30 years later![1] https://opensource.apple.com/source/xnu/xnu-3789.1.32/osfmk/...