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Starting with Rust 1.89, the __rust_probestack symbol from compiler-builtins is name-mangled and no longer exported, causing linker failures when building wasmer-vm on x86/x86_64. Conditionally vendor the probestack assembly from compiler-builtins when building with Rust >= 1.89, using rustversion for detection. On older Rust versions the behavior is unchanged. Cherry-picked from upstream wasmerio/wasmer@fc021be5c6f with a fix to use the old cargo: build script syntax for MSRV compatibility. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Starting with Rust 1.89, the __rust_probestack symbol from compiler-builtins is name-mangled and no longer exported, causing linker failures when building wasmer-vm on x86/x86_64.
Conditionally vendor the probestack assembly from compiler-builtins when building with Rust >= 1.89, using rustversion for detection. On older Rust versions the behavior is unchanged.
Cherry-picked from upstream wasmerio/wasmer@fc021be5c6f with a fix to use the old cargo: build script syntax for MSRV compatibility.