Compile Error on MacOS: One of the LLVM feature flags must be provided: llvm-19 llvm-20 llvm-21

[yixinBC]

as documented on https://aya-rs.dev/book/start/development/#prerequisites, I've installed llvm via brew.Here's its output:

➜  bpf-linker git:(main) ✗ /opt/homebrew/opt/llvm/bin/clang -v          
Homebrew clang version 21.1.1
Target: arm64-apple-darwin24.4.0
Thread model: posix
InstalledDir: /opt/homebrew/Cellar/llvm/21.1.1/bin
Configuration file: /opt/homebrew/etc/clang/arm64-apple-darwin24.cfg
System configuration file directory: /opt/homebrew/etc/clang
User configuration file directory: /Users/yixinbc/.config/clang

Then I tried to run

LLVM_SYS_211_PREFIX=$(brew --prefix llvm) cargo install \
    --no-default-features bpf-linker

however still get errors below.

error: One of the LLVM feature flags must be provided: llvm-19 llvm-20 llvm-21 
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/lib.rs:22:9
   |
22 |           compile_error!(concat!("One of the LLVM feature flags must be provided: ", $($all, " "),*));
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
33 | / assert_unique_used_features! {
34 | |     "llvm-19",
35 | |     "llvm-20",
36 | |     "llvm-21"
37 | | }
   | |_- in this macro invocation
   |
   = note: this error originates in the macro `assert_used_features` which comes from the expansion of the macro `assert_unique_used_features` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:15:5
   |
15 | use llvm_sys::{
   |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
   |
   = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
 --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/iter.rs:3:5
  |
3 | use llvm_sys::{
  |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
  |
  = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
 --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:9:5
  |
9 | use llvm_sys::{
  |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
  |
  = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
 --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/ir.rs:7:5
  |
7 | use llvm_sys::{
  |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
  |
  = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/mod.rs:16:5
   |
16 | use llvm_sys::{
   |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
   |
   = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:10:5
   |
10 | use llvm_sys::{core::*, debuginfo::*, prelude::*};
   |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
   |
   = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0432]: unresolved import `llvm_sys`
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/mod.rs:16:5
   |
16 | use llvm_sys::{
   |     ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
   |
   = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:614:13
    |
614 |             llvm_sys::LLVMDiagnosticSeverity::LLVMDSError => {
    |             ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:622:13
    |
622 | ...   llvm_sys::LLVMDiagnosticSeverity::LLVMDSWarning => warn!("llvm: {...
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:623:13
    |
623 | ...   llvm_sys::LLVMDiagnosticSeverity::LLVMDSRemark => debug!("remark:...
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:624:13
    |
624 | ...   llvm_sys::LLVMDiagnosticSeverity::LLVMDSNote => debug!("note: {}"...
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0412]: cannot find type `LLVMContextRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:25:14
   |
25 |     context: LLVMContextRef,
   |              ^^^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMModuleRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:26:13
   |
26 |     module: LLVMModuleRef,
   |             ^^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMDIBuilderRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:27:14
   |
27 |     builder: LLVMDIBuilderRef,
   |              ^^^^^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMMetadataRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:29:36
   |
29 |     replace_operands: HashMap<u64, LLVMMetadataRef>,
   |                                    ^^^^^^^^^^^^^^^ not found in this scope
   |
help: you might be missing a type parameter
   |
24 | pub struct DISanitizer<LLVMMetadataRef> {
   |                       +++++++++++++++++

error[E0412]: cannot find type `LLVMContextRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:62:25
   |
62 |     pub fn new(context: LLVMContextRef, module: LLVMModuleRef) -> DISani...
   |                         ^^^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMModuleRef` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:62:49
   |
62 | ...extRef, module: LLVMModuleRef) -> DISanitizer {
   |                    ^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find value `LLVMDIFlagFwdDecl` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:93:57
   |
93 |                         if di_composite_type.flags() == LLVMDIFlagFwdDecl {
   |                                                         ^^^^^^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMMetadataRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:328:23
    |
328 |     ) -> HashMap<u64, LLVMMetadataRef> {
    |                       ^^^^^^^^^^^^^^^ not found in this scope
    |
help: you might be missing a type parameter
    |
 61 | impl<LLVMMetadataRef> DISanitizer {
    |     +++++++++++++++++

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:411:20
    |
411 |     GlobalVariable(LLVMValueRef),
    |                    ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:412:17
    |
412 |     GlobalAlias(LLVMValueRef),
    |                 ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:413:14
    |
413 |     Function(LLVMValueRef),
    |              ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:414:19
    |
414 |     FunctionParam(LLVMValueRef),
    |                   ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:415:17
    |
415 |     Instruction(LLVMValueRef),
    |                 ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:417:19
    |
417 |     MetadataEntry(LLVMValueRef, u32, usize),
    |                   ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:411:20
    |
411 |     GlobalVariable(LLVMValueRef),
    |                    ^^^^^^^^^^^^ not found in this scope
    |
help: you might be missing a type parameter
    |
410 | enum Item<LLVMValueRef> {
    |          ++++++++++++++

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:422:13
    |
422 |     parent: LLVMValueRef,
    |             ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:423:12
    |
423 |     value: LLVMValueRef,
    |            ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:422:13
    |
422 |     parent: LLVMValueRef,
    |             ^^^^^^^^^^^^ not found in this scope
    |
help: you might be missing a type parameter
    |
421 | struct Operand<LLVMValueRef> {
    |               ++++++++++++++

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:428:34
    |
428 |     fn replace(&mut self, value: LLVMValueRef) {
    |                                  ^^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `LLVMValueRef` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:441:28
    |
441 |     fn value_ref(&self) -> LLVMValueRef {
    |                            ^^^^^^^^^^^^ not found in this scope

error[E0084]: unsupported representation for zero-variant enum
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:150:8
    |
150 | #[repr(u32)]
    |        ^^^
151 | enum DIDerivedTypeOperand {
    | ------------------------- zero-variant enum

error[E0084]: unsupported representation for zero-variant enum
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:219:8
    |
219 | #[repr(u32)]
    |        ^^^
220 | enum DICompositeTypeOperand {
    | --------------------------- zero-variant enum

error[E0599]: no variant or associated item named `Elements` found for enum `DICompositeTypeOperand` in the current scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:264:77
    |
220 | enum DICompositeTypeOperand {
    | --------------------------- variant or associated item `Elements` not found for this enum
...
264 |             unsafe { LLVMGetOperand(self.value_ref, DICompositeTypeOperand::Elements as...
    |                                                                             ^^^^^^^^ variant or associated item not found in `DICompositeTypeOperand`

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMCreateDIBuilder` in this scope
  --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:66:31
   |
66 |             builder: unsafe { LLVMCreateDIBuilder(module) },
   |                               ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMMetadataAsValue` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:240:42
    |
240 | ...ce(unsafe { LLVMMetadataAsValue(self.context, *new_metadata) })
    |                ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMMetadataAsValue` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:266:47
    |
266 | ... = unsafe { LLVMMetadataAsValue(self.context, metadata) };
    |                ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMDisposeDIBuilder` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:309:18
    |
309 |         unsafe { LLVMDisposeDIBuilder(self.builder) };
    |                  ^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMDIBuilderCreateFunction` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:352:35
    |
352 |                 let new_program = LLVMDIBuilderCreateFunction(
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMDIBuilderFinalizeSubprogram` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:371:17
    |
371 | ...   LLVMDIBuilderFinalizeSubprogram(self.builder, new_program);
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMMetadataAsValue` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:373:46
    |
373 | ...m_value_ref(LLVMMetadataAsValue(self.context, new_program))
    |                ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMMDNodeInContext2` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:396:26
    |
396 | ...   unsafe { LLVMMDNodeInContext2(self.context, core::ptr::null_mut()...
    |                ^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMValueAsMetadata` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:400:17
    |
400 |                 LLVMValueAsMetadata(new_program.value_ref)
    |                 ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMIsAMDNode` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:430:17
    |
430 |             if !LLVMIsAMDNode(self.parent).is_null() {
    |                 ^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMValueAsMetadata` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:431:29
    |
431 |                 let value = LLVMValueAsMetadata(value);
    |                             ^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMReplaceMDNodeOperandWith` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:432:17
    |
432 | ...   LLVMReplaceMDNodeOperandWith(self.parent, self.index, value);
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMIsAUser` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:433:24
    |
433 |             } else if !LLVMIsAUser(self.parent).is_null() {
    |                        ^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find function, tuple struct or tuple variant `LLVMSetOperand` in this scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/di.rs:434:17
    |
434 |                 LLVMSetOperand(self.parent, self.index, value);
    |                 ^^^^^^^^^^^^^^ not found in this scope

error[E0599]: no variant or associated item named `BaseType` found for enum `DIDerivedTypeOperand` in the current scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:196:78
    |
151 | enum DIDerivedTypeOperand {
    | ------------------------- variant or associated item `BaseType` not found for this enum
...
196 |             let value = LLVMGetOperand(self.value_ref, DIDerivedTypeOperand::BaseType as...
    |                                                                              ^^^^^^^^ variant or associated item not found in `DIDerivedTypeOperand`

error[E0599]: no variant or associated item named `Elements` found for enum `DICompositeTypeOperand` in the current scope
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/types/di.rs:304:41
    |
220 | enum DICompositeTypeOperand {
    | --------------------------- variant or associated item `Elements` not found for this enum
...
304 |                 DICompositeTypeOperand::Elements as u32,
    |                                         ^^^^^^^^ variant or associated item not found in `DICompositeTypeOperand`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/linker.rs:599:47
    |
599 | ...y: llvm_sys::LLVMDiagnosticSeverity, message: &str) {
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/mod.rs:274:32
    |
274 | fn symbol_name<'a>(value: *mut llvm_sys::LLVMValue) -> &'a str {
    |                                ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/mod.rs:280:43
    |
280 | ...ut llvm_sys::LLVMValue, name: &str) {
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `llvm_sys`
   --> /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/bpf-linker-0.9.15/src/llvm/mod.rs:323:47
    |
323 | ...y: llvm_sys::LLVMDiagnosticSeverity, message: &str);
    |       ^^^^^^^^ use of unresolved module or unlinked crate `llvm_sys`
    |
    = help: if you wanted to use a crate named `llvm_sys`, use `cargo add llvm_sys` to add it to your `Cargo.toml`

Some errors have detailed explanations: E0084, E0412, E0425, E0432, E0433, E0599.
For more information about an error, try `rustc --explain E0084`.
error: could not compile `bpf-linker` (lib) due to 55 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `bpf-linker v0.9.15`, intermediate artifacts can be found at `/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/cargo-installoJ7Tdd`.
To reuse those artifacts with a future compilation, set the environment variable `CARGO_TARGET_DIR` to that path.

any idea?

[tamird]

As the error says: you need to pass --features llvm-21.

@vadorovsky seems we need a docs update.

[vadorovsky]

Whoops, yeah, my bad for not making the docs clear enough. I'll fix that up.

[yixinBC]

solved.

[yixinBC]

I‘m sorry that I still got an error while running cargo build for my aya-based ebpf program.
It just says unable to find LLVM shared lib. I'll paste the whole error messages below

! cargo build --package trayce --release --target=aarch64-unknown-linux-musl
  ⎿ warning: `/Users/yixinbc/.cargo/config` is deprecated in favor of `config.toml`
    note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
       Compiling trayce-ebpf v0.1.0 (/Users/yixinbc/code/trayce/trayce-ebpf)
       Compiling trayce v0.1.0 (/Users/yixinbc/code/trayce/trayce)
    warning: trayce@0.1.0: warning: `/Users/yixinbc/.cargo/config` is deprecated in favor of `config.toml`
    warning: trayce@0.1.0: note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
    warning: trayce@0.1.0:    Compiling trayce-ebpf v0.1.0 (/Users/yixinbc/code/trayce/trayce-ebpf)
    warning: trayce@0.1.0: error: linking with `bpf-linker` failed: signal: 6 (SIGABRT)
    warning: trayce@0.1.0:   |
    warning: trayce@0.1.0:   = note:  "bpf-linker" "--export-symbols" "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/symbols" 
    "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/symbols.o" "<1 object files omitted>" 
    "/Users/yixinbc/code/trayce/target/aarch64-unknown-linux-musl/release/build/trayce-2159dfaa4edd7dc0/out/trayce-ebpf/bpfel-unknown-none/release/deps/{libaya_lo
    g_ebpf-1095d0116bc92f84,libaya_log_common-4e54e54649a61c33,libnum_enum-db18a6b416f67514,libaya_ebpf-ea3ee49e309bebde,libaya_ebpf_bindings-f9fadd48f7bdde0d,lib
    aya_ebpf_cty-7ba354320a5cf185,libcore-45068028bd800536,libcompiler_builtins-72208f9389d101be}.rlib" "-L" 
    "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/raw-dylibs" "--cpu" "generic" "-o" "/Users/yixinbc/code/trayce/target/aarch64-unknown-linux-musl
    /release/build/trayce-2159dfaa4edd7dc0/out/trayce-ebpf/bpfel-unknown-none/release/deps/trayce-7839d0b6eb37535e" "-O3" "--debug" "--btf"
    warning: trayce@0.1.0:   = note: some arguments are omitted. use `--verbose` to show all linker arguments
    warning: trayce@0.1.0:   = note: unable to read dir /Users/yixinbc/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /usr/local/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /usr/local/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /System/Cryptexes/App/usr/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/lib: No such file or directory (os 
    error 2)
    warning: trayce@0.1.0:           unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/lib: No such file or directory (os error 
    2)
    warning: trayce@0.1.0:           unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/lib: No such file or 
    directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /Users/yixinbc/.cargo/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /opt/podman/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /Users/yixinbc/Library/Application Support/JetBrains/Toolbox/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /Users/yixinbc/.orbstack/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /Users/yixinbc/Library/Application Support/Code/User/globalStorage/github.copilot-chat/lib: No such file 
    or directory (os error 2)
    warning: trayce@0.1.0:           unable to read dir /Users/yixinbc/.orbstack/lib: No such file or directory (os error 2)
    warning: trayce@0.1.0:           
    warning: trayce@0.1.0:           thread 'main' panicked at 
    /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/aya-rustc-llvm-proxy-0.9.5/src/lib.rs:102:5:
    warning: trayce@0.1.0:           unable to find LLVM shared lib
    warning: trayce@0.1.0:           note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
    warning: trayce@0.1.0:           
    warning: trayce@0.1.0:           thread 'main' panicked at library/core/src/panicking.rs:225:5:
    warning: trayce@0.1.0:           panic in a function that cannot unwind
    warning: trayce@0.1.0:           stack backtrace:
    warning: trayce@0.1.0:              0:        0x104ec4328 - std::backtrace_rs::backtrace::libunwind::trace::h72f4b72e0962905d
    warning: trayce@0.1.0:                                          at 
    /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
    warning: trayce@0.1.0:              1:        0x104ec4328 - std::backtrace_rs::backtrace::trace_unsynchronized::hff394536698b6b10
    warning: trayce@0.1.0:                                          at 
    /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
    warning: trayce@0.1.0:              2:        0x104ec4328 - std::sys::backtrace::_print_fmt::h64d1e3035850353e
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
    warning: trayce@0.1.0:              3:        0x104ec4328 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as 
    core::fmt::Display>::fmt::hf35f9734f9a29483
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
    warning: trayce@0.1.0:              4:        0x104edd3b8 - core::fmt::rt::Argument::fmt::hedf6f2a66f855f69
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
    warning: trayce@0.1.0:              5:        0x104edd3b8 - core::fmt::write::h60ec6633daab7b35
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
    warning: trayce@0.1.0:              6:        0x104ec218c - std::io::default_write_fmt::h0e30d7b1295222cb
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
    warning: trayce@0.1.0:              7:        0x104ec218c - std::io::Write::write_fmt::hc29709fdab2e34e2
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
    warning: trayce@0.1.0:              8:        0x104ec41dc - std::sys::backtrace::BacktraceLock::print::hca95bffd78053951
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
    warning: trayce@0.1.0:              9:        0x104ec5304 - std::panicking::default_hook::{{closure}}::h357ed4fbef22679d
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
    warning: trayce@0.1.0:             10:        0x104ec515c - std::panicking::default_hook::h0a4e133b151d5758
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9
    warning: trayce@0.1.0:             11:        0x104ec5da4 - std::panicking::rust_panic_with_hook::h557a23724a5de839
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13
    warning: trayce@0.1.0:             12:        0x104ec5998 - std::panicking::begin_panic_handler::{{closure}}::h269cace6208fef05
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
    warning: trayce@0.1.0:             13:        0x104ec47d8 - std::sys::backtrace::__rust_end_short_backtrace::h5be0da278f3aaec7
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
    warning: trayce@0.1.0:             14:        0x104ec569c - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
    warning: trayce@0.1.0:             15:        0x104eef8e4 - core::panicking::panic_nounwind_fmt::runtime::h5c6a5149472cea01
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:117:22
    warning: trayce@0.1.0:             16:        0x104eef8e4 - core::panicking::panic_nounwind_fmt::h9825e2aa83719df7
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/intrinsics/mod.rs:2367:9
    warning: trayce@0.1.0:             17:        0x104eef95c - core::panicking::panic_nounwind::h4cc28a4411926d9d
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:225:5
    warning: trayce@0.1.0:             18:        0x104eefa00 - core::panicking::panic_cannot_unwind::ha4e3ecab6cb0371c
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:346:5
    warning: trayce@0.1.0:             19:        0x104e9fda8 - _LLVMInitializeBPFTarget
    warning: trayce@0.1.0:             20:        0x104e9385c - bpf_linker::llvm::init::hc3cefd1bae9eeace
    warning: trayce@0.1.0:             21:        0x104e8d79c - bpf_linker::linker::Linker::link::h23a64fa5dbf4b8e6
    warning: trayce@0.1.0:             22:        0x104da4db8 - bpf_linker::main::hf32fb386e0f2eab2
    warning: trayce@0.1.0:             23:        0x104db3f6c - std::sys::backtrace::__rust_begin_short_backtrace::h37b3e61e6c34bf91
    warning: trayce@0.1.0:             24:        0x104dbe4d8 - std::rt::lang_start::{{closure}}::h8cc73bf14c714a52
    warning: trayce@0.1.0:             25:        0x104ebd0c8 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for 
    &F>::call_once::hbb2eb0e6976088d9
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21
    warning: trayce@0.1.0:             26:        0x104ebd0c8 - std::panicking::catch_unwind::do_call::h93858ce5ba09f3d9
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
    warning: trayce@0.1.0:             27:        0x104ebd0c8 - std::panicking::catch_unwind::h129a241a010f1b76
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
    warning: trayce@0.1.0:             28:        0x104ebd0c8 - std::panic::catch_unwind::h5ca6b885cfe10586
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
    warning: trayce@0.1.0:             29:        0x104ebd0c8 - std::rt::lang_start_internal::{{closure}}::hed6353a412388a00
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24
    warning: trayce@0.1.0:             30:        0x104ebd0c8 - std::panicking::catch_unwind::do_call::h6579b7caa3691f01
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
    warning: trayce@0.1.0:             31:        0x104ebd0c8 - std::panicking::catch_unwind::h4557f88752b89087
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
    warning: trayce@0.1.0:             32:        0x104ebd0c8 - std::panic::catch_unwind::h82809ba82b8374af
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
    warning: trayce@0.1.0:             33:        0x104ebd0c8 - std::rt::lang_start_internal::hdb28e94b6865fa11
    warning: trayce@0.1.0:                                          at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5
    warning: trayce@0.1.0:             34:        0x104dacab4 - _main
    warning: trayce@0.1.0:           thread caused non-unwinding panic. aborting.
    warning: trayce@0.1.0:           
    warning: trayce@0.1.0: 
    warning: trayce@0.1.0: 
    warning: trayce@0.1.0: error: could not compile `trayce-ebpf` (bin "trayce") due to 1 previous error
    error: failed to run custom build command for `trayce v0.1.0 (/Users/yixinbc/code/trayce/trayce)`

    Caused by:
      process didn't exit successfully: `/Users/yixinbc/code/trayce/target/release/build/trayce-62fb4b3661592756/build-script-build` (exit status: 1)
      --- stdout
      cargo:rerun-if-changed=/Users/yixinbc/code/trayce/trayce-ebpf
      cargo:warning=warning: `/Users/yixinbc/.cargo/config` is deprecated in favor of `config.toml`
      cargo:warning=note: if you need to support cargo 1.38 or earlier, you can symlink `config` to `config.toml`
      cargo:warning=   Compiling trayce-ebpf v0.1.0 (/Users/yixinbc/code/trayce/trayce-ebpf)
      cargo:warning=error: linking with `bpf-linker` failed: signal: 6 (SIGABRT)
      cargo:warning=  |
      cargo:warning=  = note:  "bpf-linker" "--export-symbols" "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/symbols" 
    "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/symbols.o" "<1 object files omitted>" 
    "/Users/yixinbc/code/trayce/target/aarch64-unknown-linux-musl/release/build/trayce-2159dfaa4edd7dc0/out/trayce-ebpf/bpfel-unknown-none/release/deps/{libaya_lo
    g_ebpf-1095d0116bc92f84,libaya_log_common-4e54e54649a61c33,libnum_enum-db18a6b416f67514,libaya_ebpf-ea3ee49e309bebde,libaya_ebpf_bindings-f9fadd48f7bdde0d,lib
    aya_ebpf_cty-7ba354320a5cf185,libcore-45068028bd800536,libcompiler_builtins-72208f9389d101be}.rlib" "-L" 
    "/var/folders/9s/99c97sq509lclfcq821w_9vc0000gn/T/rustcZdGtIf/raw-dylibs" "--cpu" "generic" "-o" "/Users/yixinbc/code/trayce/target/aarch64-unknown-linux-musl
    /release/build/trayce-2159dfaa4edd7dc0/out/trayce-ebpf/bpfel-unknown-none/release/deps/trayce-7839d0b6eb37535e" "-O3" "--debug" "--btf"
      cargo:warning=  = note: some arguments are omitted. use `--verbose` to show all linker arguments
      cargo:warning=  = note: unable to read dir /Users/yixinbc/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /usr/local/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /usr/local/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /System/Cryptexes/App/usr/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/lib: No such file or directory (os 
    error 2)
      cargo:warning=          unable to read dir /Users/yixinbc/.cargo/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /opt/podman/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /Users/yixinbc/Library/Application Support/JetBrains/Toolbox/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /Users/yixinbc/.orbstack/lib: No such file or directory (os error 2)
      cargo:warning=          unable to read dir /Users/yixinbc/Library/Application Support/Code/User/globalStorage/github.copilot-chat/lib: No such file or 
    directory (os error 2)
      cargo:warning=          unable to read dir /Users/yixinbc/.orbstack/lib: No such file or directory (os error 2)
      cargo:warning=          
      cargo:warning=          thread 'main' panicked at 
    /Users/yixinbc/.cargo/registry/src/rsproxy.cn-e3de039b2554c837/aya-rustc-llvm-proxy-0.9.5/src/lib.rs:102:5:
      cargo:warning=          unable to find LLVM shared lib
      cargo:warning=          note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
      cargo:warning=          
      cargo:warning=          thread 'main' panicked at library/core/src/panicking.rs:225:5:
      cargo:warning=          panic in a function that cannot unwind
      cargo:warning=          stack backtrace:
      cargo:warning=             0:        0x104ec4328 - std::backtrace_rs::backtrace::libunwind::trace::h72f4b72e0962905d
      cargo:warning=                                         at 
    /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
      cargo:warning=             1:        0x104ec4328 - std::backtrace_rs::backtrace::trace_unsynchronized::hff394536698b6b10
      cargo:warning=                                         at 
    /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
      cargo:warning=             2:        0x104ec4328 - std::sys::backtrace::_print_fmt::h64d1e3035850353e
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
      cargo:warning=             3:        0x104ec4328 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as 
    core::fmt::Display>::fmt::hf35f9734f9a29483
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
      cargo:warning=             4:        0x104edd3b8 - core::fmt::rt::Argument::fmt::hedf6f2a66f855f69
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
      cargo:warning=             5:        0x104edd3b8 - core::fmt::write::h60ec6633daab7b35
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
      cargo:warning=             6:        0x104ec218c - std::io::default_write_fmt::h0e30d7b1295222cb
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
      cargo:warning=             7:        0x104ec218c - std::io::Write::write_fmt::hc29709fdab2e34e2
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
      cargo:warning=             8:        0x104ec41dc - std::sys::backtrace::BacktraceLock::print::hca95bffd78053951
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
      cargo:warning=             9:        0x104ec5304 - std::panicking::default_hook::{{closure}}::h357ed4fbef22679d
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
      cargo:warning=            10:        0x104ec515c - std::panicking::default_hook::h0a4e133b151d5758
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:327:9
      cargo:warning=            11:        0x104ec5da4 - std::panicking::rust_panic_with_hook::h557a23724a5de839
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:833:13
      cargo:warning=            12:        0x104ec5998 - std::panicking::begin_panic_handler::{{closure}}::h269cace6208fef05
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:699:13
      cargo:warning=            13:        0x104ec47d8 - std::sys::backtrace::__rust_end_short_backtrace::h5be0da278f3aaec7
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
      cargo:warning=            14:        0x104ec569c - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
      cargo:warning=            15:        0x104eef8e4 - core::panicking::panic_nounwind_fmt::runtime::h5c6a5149472cea01
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:117:22
      cargo:warning=            16:        0x104eef8e4 - core::panicking::panic_nounwind_fmt::h9825e2aa83719df7
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/intrinsics/mod.rs:2367:9
      cargo:warning=            17:        0x104eef95c - core::panicking::panic_nounwind::h4cc28a4411926d9d
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:225:5
      cargo:warning=            18:        0x104eefa00 - core::panicking::panic_cannot_unwind::ha4e3ecab6cb0371c
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:346:5
      cargo:warning=            19:        0x104e9fda8 - _LLVMInitializeBPFTarget
      cargo:warning=            20:        0x104e9385c - bpf_linker::llvm::init::hc3cefd1bae9eeace
      cargo:warning=            21:        0x104e8d79c - bpf_linker::linker::Linker::link::h23a64fa5dbf4b8e6
      cargo:warning=            22:        0x104da4db8 - bpf_linker::main::hf32fb386e0f2eab2
      cargo:warning=            23:        0x104db3f6c - std::sys::backtrace::__rust_begin_short_backtrace::h37b3e61e6c34bf91
      cargo:warning=            24:        0x104dbe4d8 - std::rt::lang_start::{{closure}}::h8cc73bf14c714a52
      cargo:warning=            25:        0x104ebd0c8 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbb2eb0e6976088d9
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:290:21
      cargo:warning=            26:        0x104ebd0c8 - std::panicking::catch_unwind::do_call::h93858ce5ba09f3d9
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
      cargo:warning=            27:        0x104ebd0c8 - std::panicking::catch_unwind::h129a241a010f1b76
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
      cargo:warning=            28:        0x104ebd0c8 - std::panic::catch_unwind::h5ca6b885cfe10586
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
      cargo:warning=            29:        0x104ebd0c8 - std::rt::lang_start_internal::{{closure}}::hed6353a412388a00
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:175:24
      cargo:warning=            30:        0x104ebd0c8 - std::panicking::catch_unwind::do_call::h6579b7caa3691f01
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
      cargo:warning=            31:        0x104ebd0c8 - std::panicking::catch_unwind::h4557f88752b89087
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
      cargo:warning=            32:        0x104ebd0c8 - std::panic::catch_unwind::h82809ba82b8374af
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
      cargo:warning=            33:        0x104ebd0c8 - std::rt::lang_start_internal::hdb28e94b6865fa11
      cargo:warning=                                         at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/rt.rs:171:5
      cargo:warning=            34:        0x104dacab4 - _main
      cargo:warning=          thread caused non-unwinding panic. aborting.
      cargo:warning=          
      cargo:warning=
      cargo:warning=
      cargo:warning=error: could not compile `trayce-ebpf` (bin "trayce") due to 1 previous error

      --- stderr
      Error: env -u RUSTC -u RUSTC_WORKSPACE_WRAPPER CARGO_CFG_BPF_TARGET_ARCH="aarch64" CARGO_ENCODED_RUSTFLAGS="-C\u{1f}debuginfo=2\u{1f}-C\u{1f}link-arg=--btf"
     "rustup" "run" "nightly" "cargo" "build" "--package" "trayce-ebpf" "-Z" "build-std=core" "--bins" "--message-format=json" "--release" "--target" 
    "bpfel-unknown-none" "--target-dir" "/Users/yixinbc/code/trayce/target/aarch64-unknown-linux-musl/release/build/trayce-2159dfaa4edd7dc0/out/trayce-ebpf" 
    failed: ExitStatus(unix_wait_status(25856))

[tamird]

The llvm version must match rustc's llvm.