smeng9andClaude Opus 5.5
6dc20ebe08
scripts/linux/setup-toolchain.py, run once as root, builds into /opt/unixnu-linux (or PREFIX, or $UNIXNU_TOOLCHAIN): - clang from llvm-project 58c46bae2118 with llvm-xnu-builtin-type.patch, which adds __builtin_xnu_type_signature, __builtin_xnu_type_summary, __builtin_xnu_types_compatible and xnu_usage_semantics; kalloc.h uses the builtins with no fallback; - cctools-port 1030.6.3-ld64-956.6 (its master, ld64-609, corrupts the kernel link), with libdispatch for ld64; - mig and migcom from bootstrap_cmds-138; - iig-port, with iig-port-darwin-target.patch; - xnu-host-cc, the host compiler for xnu's SETUP tools; - lzfse for the kernelcache. It installs the Command Line Tools shims (clang, clang++, cc, install, gm4) under the prefix and xcrun, plutil and codesign in /usr/bin, where xnu's makefiles call them. libmacho.a and libstuff.a go to /usr/lib and libdispatch to /usr/local. Each step is skipped when its output exists. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
35 lines
1.9 KiB
Bash
Executable File
35 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# clang in the CLT's usr/bin: the Darwin cross compiler xnu's makefiles get
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# from `xcrun -find clang` (and through it LD = $(KC++) and MIGCC := $(CC)).
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# It runs $CROSS_CLANG, the clang setup-toolchain.py builds with
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# llvm-xnu-builtin-type.patch, with what Apple's clang does by itself for this
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# target:
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#
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# -target $DARWIN_TRIPLE -arch alone does not switch clang off the Linux
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# host triple, and xnu never passes -target for MacOSX
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# (MakeInc.def uses -mmacosx-version-min).
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# $CROSS_EXTRA_FLAGS -fptrauth-function-pointer-type-discrimination (on for
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# -mkernel in Apple clang, opt-in upstream);
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# -mllvm -disable-atexit-based-global-dtor-lowering, so C++
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# static destructors land in __mod_term_func as the
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# kernel expects; the __ARM_ARCH_8_2__..8_5__ Apple clang
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# predefines for -mcpu=apple-a14.
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# $XNU_CLANG_DROP_FLAGS removed: -mno-implicit-sme, Apple-only, which
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# MakeInc.def passes; upstream never emits SME implicitly
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# here, so dropping it is a no-op.
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#
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# The build driver (scripts/unixnu/kernel.py) sets CROSS_CLANG, DARWIN_TRIPLE
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# and CROSS_EXTRA_FLAGS for UniXNU's plain arm64 iOS 17 kernel; the defaults are
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# an arm64e macOS 26 target.
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real="${CROSS_CLANG:-/opt/unixnu-linux/llvm/bin/clang}"
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drop=(${XNU_CLANG_DROP_FLAGS--mno-implicit-sme})
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args=()
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for a in "$@"; do
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skip=0
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for d in "${drop[@]}"; do [ "$a" = "$d" ] && skip=1 && break; done
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[ "$skip" = 1 ] || args+=("$a")
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done
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exec "${real}" -target "${DARWIN_TRIPLE:-arm64e-apple-macos26.0}" \
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${CROSS_EXTRA_FLAGS--fptrauth-function-pointer-type-discrimination -mllvm -disable-atexit-based-global-dtor-lowering -D__ARM_ARCH_8_2__=1 -D__ARM_ARCH_8_3__=1 -D__ARM_ARCH_8_4__=1 -D__ARM_ARCH_8_5__=1} \
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"${args[@]}"
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