gnullvm: link libunwind statically by default

[mati865]

Previously shared library was used meaning that programs and libraries couldn't be loaded if libunwind.dll was missing from the PATH. Using Wine (on Linux) because it better shows the problem (and is more convenient):

❯ cargo new hello &> /dev/null

❯ cargo rustc --target x86_64-pc-windows-gnullvm &> /dev/null

❯ wine target/x86_64-pc-windows-gnullvm/debug/hello.exe
0024:err:module:import_dll Library libunwind.dll (which is needed by L"Z:\\tmp\\hello\\target\\x86_64-pc-windows-gnullvm\\debug\\hello.exe") not found
0024:err:module:loader_init Importing dlls for L"Z:\\tmp\\hello\\target\\x86_64-pc-windows-gnullvm\\debug\\hello.exe" failed, status c0000135

❯ llvm-readobj --coff-imports target/x86_64-pc-windows-gnullvm/debug/hello.exe
...
Import {
  Name: libunwind.dll
  ImportLookupTableRVA: 0x3D308
  ImportAddressTableRVA: 0x3D678
  Symbol: _GCC_specific_handler (0)
  Symbol: _Unwind_DeleteException (0)
  Symbol: _Unwind_GetDataRelBase (0)
  Symbol: _Unwind_GetIPInfo (0)
  Symbol: _Unwind_GetLanguageSpecificData (0)
  Symbol: _Unwind_GetRegionStart (0)
  Symbol: _Unwind_GetTextRelBase (0)
  Symbol: _Unwind_RaiseException (0)
  Symbol: _Unwind_Resume (0)
  Symbol: _Unwind_SetGR (0)
  Symbol: _Unwind_SetIP (0)
}
...

Optionally libunwind could be linked statically via +crt-static:

❯ cargo rustc --target x86_64-pc-windows-gnullvm -- -C target-feature=+crt-static &> /dev/null

❯ wine target/x86_64-pc-windows-gnullvm/debug/hello.exe
Hello, world!

❯ llvm-readobj --coff-imports target/x86_64-pc-windows-gnullvm/debug/hello.exe | rg 'libunwind.dll' || echo "doesn't depend on shared libunwind"
doesn't depend on shared libunwind

This PR turns that the other way, libunwind will be now linked statically by default and could be linked dynamically with -crt-static:

❯ wine target/x86_64-pc-windows-gnullvm/debug/hello.exe
Hello, world!

❯ llvm-readobj --coff-imports target/x86_64-pc-windows-gnullvm/debug/hello.exe | rg 'libunwind.dll' || echo "doesn't depend on shared libunwind"
doesn't depend on shared libunwind

❯ cargo rustc --target x86_64-pc-windows-gnullvm -q -- -C target-feature=-crt-static &> /dev/null

❯ wine target/x86_64-pc-windows-gnullvm/debug/hello.exe
0024:err:module:import_dll Library libunwind.dll (which is needed by L"Z:\\tmp\\hello\\target\\x86_64-pc-windows-gnullvm\\debug\\hello.exe") not found
0024:err:module:loader_init Importing dlls for L"Z:\\tmp\\hello\\target\\x86_64-pc-windows-gnullvm\\debug\\hello.exe" failed, status c0000135

❯ llvm-readobj --coff-imports target/x86_64-pc-windows-gnullvm/debug/hello.exe | rg 'libunwind.dll' || echo "doesn't depend on shared libunwind"
  Name: libunwind.dll

This is how I intended it to work previously, but couldn't manage to get it working 🤷🏻
Related PRs: #121794 #122003

[mati865]

@bors try jobs=dist-x86_64-llvm-mingw

[rust-bors]

💔 Test for be73c40 failed: CI. Failed job:

• try - dist-x86_64-llvm-mingw (web logs, enhanced plaintext logs)

[mati865]

@bors try jobs=dist-x86_64-llvm-mingw

[rust-bors]

💔 Test for e559b52 failed: CI. Failed job:

• try - dist-x86_64-llvm-mingw (web logs, enhanced plaintext logs)

[rust-log-analyzer]

The job dist-x86_64-llvm-mingw failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[RUSTC-TIMING] cranelift_codegen test:false 144.516
   Compiling rustc_codegen_cranelift v0.1.0 (D:\a\rust\rust\compiler\rustc_codegen_cranelift)
error: linking with `x86_64-w64-mingw32-clang` failed: exit code: 1
  |
  = note: "x86_64-w64-mingw32-clang" "-Wl,D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\list.def" "-nolibc" "--unwindlib=none" "-m64" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\symbols.o" "<16 object files omitted>" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\rmeta.o" "-Wl,-Bstatic" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-native\\b8630f29770ba72d\\out/libcranelift_native-b8630f29770ba72d.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-object\\727af4817bc56f06\\out/libcranelift_object-727af4817bc56f06.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\object/a045921e0956cdc2\\out/libobject-a045921e0956cdc2.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\crc32fast/7e9fc80a291d19dc\\out/libcrc32fast-7e9fc80a291d19dc.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cfg-if/b71708dcfbd80b3d\\out/libcfg_if-b71708dcfbd80b3d.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\memchr/48d6406ebbf7684c\\out/libmemchr-48d6406ebbf7684c.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-frontend\\7bafb042fa54f8e0\\out/libcranelift_frontend-7bafb042fa54f8e0.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-module\\7dc7027ba1b8e2bf\\out/libcranelift_module-7dc7027ba1b8e2bf.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\anyhow/6c48f04b464353ba\\out/libanyhow-6c48f04b464353ba.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-codegen\\26cc5d19bc639af9\\out/libcranelift_codegen-26cc5d19bc639af9.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-assembler-x64/f0e59204b31016fa\\out/libcranelift_assembler_x64-f0e59204b31016fa.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\target-lexicon/459637113d1cd50a\\out/libtarget_lexicon-459637113d1cd50a.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-codegen-shared/ec8e099b9d62c296\\out/libcranelift_codegen_shared-ec8e099b9d62c296.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\regalloc2/260e15585367b2fc\\out/libregalloc2-260e15585367b2fc.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\bumpalo/8ce21bb1d9f73467\\out/libbumpalo-8ce21bb1d9f73467.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\log/1b63cb4fc81a8c80\\out/liblog-1b63cb4fc81a8c80.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\smallvec/55b384d10cc8a8ef\\out/libsmallvec-55b384d10cc8a8ef.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc-hash/0ffa2dd2cc633df4\\out/librustc_hash-0ffa2dd2cc633df4.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\allocator-api2/8a9184384dbc6a13\\out/liballocator_api2-8a9184384dbc6a13.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\gimli/dcd5deaf1b7a3e3c\\out/libgimli-dcd5deaf1b7a3e3c.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\fnv/f2379ee94eecae7b\\out/libfnv-f2379ee94eecae7b.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\indexmap/170b61284c9e6c9d\\out/libindexmap-170b61284c9e6c9d.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\equivalent/d7c2a47235e7ecbb\\out/libequivalent-d7c2a47235e7ecbb.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\hashbrown/3557d3b1cfc55743\\out/libhashbrown-3557d3b1cfc55743.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-control/d9703e487945453d\\out/libcranelift_control-d9703e487945453d.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\arbitrary/c2c3edf7aebc69bd\\out/libarbitrary-c2c3edf7aebc69bd.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-bforest/b2abed9f309171fe\\out/libcranelift_bforest-b2abed9f309171fe.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-entity/a5c51b3215e06de9\\out/libcranelift_entity-a5c51b3215e06de9.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\cranelift-bitset/d1083d06ffb62311\\out/libcranelift_bitset-d1083d06ffb62311.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\wasmtime-internal-core/f063d45a0ef768f1\\out/libwasmtime_internal_core-f063d45a0ef768f1.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\libm/5f2555692e81004e\\out/liblibm-5f2555692e81004e.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\hashbrown/da3687c6f1175d03\\out/libhashbrown-da3687c6f1175d03.rlib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\foldhash/cc516026cb64d5e5\\out/libfoldhash-cc516026cb64d5e5.rlib" "-Wl,-Bdynamic" "<sysroot>\\lib\\rustlib\\x86_64-pc-windows-gnullvm\\lib\\rustc_driver-8ab2882174ddb14e.dll" "-Wl,-Bstatic" "<sysroot>\\lib\\rustlib\\x86_64-pc-windows-gnullvm\\lib/libcompiler_builtins-*.rlib" "-Wl,-Bdynamic" "-lshell32" "-luuid" "-lLLVM-22-rust-1.99.0-nightly" "-lkernel32" "-ladvapi32" "-lole32" "-loleaut32" "-lkernel32" "-lkernel32" "-lkernel32" "-lkernel32" "-lntdll" "-luserenv" "-lws2_32" "-ldbghelp" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\advapi32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-errorhandling-l1-1-3.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-file-fromapp-l1-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-handle-l1-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-ioring-l1-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-libraryloader-l2-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-3.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-4.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-5.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-6.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-7.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-memory-l1-1-8.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-synch-l1-2-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-util-l1-1-1.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-winrt-error-l1-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-winrt-l1-1-0.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-core-wow64-l1-1-1.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\api-ms-win-security-base-l1-2-2.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\avrt.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\bcp47mrm.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\bcryptprimitives.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\clfsw32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\dbghelp.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\elscore.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\gdi32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\icu.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\icuin.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\icuuc.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\imagehlp.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\kernel32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\ktmw32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\netapi32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\normaliz.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\ntdll.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\ole32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\oleacc.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\oleaut32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\psapi.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\rtworkq.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\txfw32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\user32.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\usp10.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\version.dll_imports_indirect.lib" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustcmPeyo6\\wofutil.dll_imports_indirect.lib" "-lmingw32" "-lmingwex" "-lmsvcrt" "-lkernel32" "-luser32" "-Wl,--nxcompat" "-L" "<sysroot>\\lib\\rustlib\\x86_64-pc-windows-gnullvm\\lib" "-o" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\rustc_codegen_cranelift-f071d329bbbc2c9c.dll" "-static" "-shared" "-Wl,--out-implib=D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnullvm\\stage2-codegen\\x86_64-pc-windows-gnullvm\\release\\build\\rustc_codegen_cranelift/f071d329bbbc2c9c\\out\\librustc_codegen_cranelift-f071d329bbbc2c9c.dll.a" "-Wl,-O1" "-LD:/a/rust/rust/build/x86_64-pc-windows-gnullvm/llvm/lib"
  = note: some arguments are omitted. use `--verbose` to show all linker arguments
  = note: clang-21: warning: argument unused during compilation: '-nolibc' [-Wunused-command-line-argument]
          ld.lld: error: undefined symbol: _Unwind_Resume
          >>> referenced by D:\a\rust\rust\build\x86_64-pc-windows-gnullvm\stage2-codegen\x86_64-pc-windows-gnullvm\release\build\rustc_codegen_cranelift/f071d329bbbc2c9c\out\rustc_codegen_cranelift-f071d329bbbc2c9c.rustc_codegen_cranelift.b09bb4ed5b4dbf86-cgu.00.rcgu.o:(<gimli::write::op::Expression>::write::<rustc_codegen_cranelift::debuginfo::emit::WriterRelocate>)
          >>> referenced by D:\a\rust\rust\build\x86_64-pc-windows-gnullvm\stage2-codegen\x86_64-pc-windows-gnullvm\release\build\rustc_codegen_cranelift/f071d329bbbc2c9c\out\rustc_codegen_cranelift-f071d329bbbc2c9c.rustc_codegen_cranelift.b09bb4ed5b4dbf86-cgu.00.rcgu.o:(<rustc_middle::dep_graph::graph::DepGraphData>::hash_result_and_alloc_node::<rustc_codegen_ssa::ModuleCodegen<rustc_codegen_cranelift::driver::aot::AotModule>>)
          >>> referenced by D:\a\rust\rust\build\x86_64-pc-windows-gnullvm\stage2-codegen\x86_64-pc-windows-gnullvm\release\build\rustc_codegen_cranelift/f071d329bbbc2c9c\out\rustc_codegen_cranelift-f071d329bbbc2c9c.rustc_codegen_cranelift.b09bb4ed5b4dbf86-cgu.00.rcgu.o:(<rustc_middle::dep_graph::graph::DepGraphData>::assert_dep_node_not_yet_allocated_in_current_session::<alloc::string::String, <rustc_middle::dep_graph::graph::DepGraphData>::with_task<<rustc_codegen_cranelift::driver::aot::AotDriver as rustc_codegen_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit::{closure#0}, rustc_codegen_ssa::ModuleCodegen<rustc_codegen_cranelift::driver::aot::AotModule>>::{closure#0}>)
          >>> referenced 4082 more times
          clang-21: error: linker command failed with exit code 1 (use -v to see invocation)
          

[RUSTC-TIMING] rustc_codegen_cranelift test:false 24.587
error: could not compile `rustc_codegen_cranelift` (lib) due to 1 previous error
Bootstrap failed while executing `dist bootstrap enzyme --include-default-paths`

[mati865]

This is how I intended it to work previously, but couldn't manage to get it working 🤷🏻

So, that must be why...

ld.lld: error: undefined symbol: _Unwind_Resume
#159782 (comment)