How to compile the mono runtime to Wasm.

[shenqi-xiaoafei]

I am using Windows 10, and the compile command is “build.cmd mono.runtime -os browser -c Debug”

Compilation exception:
[vcvarsall.bat] Environment initialized for: 'x86_x64'
[1/2] Linking CXX executable mono\mini\mono-aot-cross.exe
FAILED: mono/mini/mono-aot-cross.exe
cmd.exe /C "cd . && "E:\Program Files\CMake\bin\cmake.exe" -E vs_link_exe --intdir=mono\mini\CMakeFiles\mono-sgen.dir --rc=C:\PROGRA2\WI3CF21\10\bin\1002201.0\x86\rc.exe --mt=C:\PROGRA2\WI3CF21\10\bin\1002201.0\x86\mt.exe --mani
fests -- E:\PROGRA2\MICROS1\2022\COMMUN1\VC\Tools\MSVC\14311.311\bin\Hostx86\x64\link.exe /nologo @CMakeFiles\mono-sgen.rsp /out:mono\mini\mono-aot-cross.exe /implib:mono\mini\mono-aot-cross.lib /pdb:mono\mini\mono-aot-cross.pdb
/version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:0x800000 /LTCG /DEBUG /OPT:REF /OPT:ICF /OPT:NOICF && cd ."
LINK: command "E:\PROGRA2\MICROS1\2022\COMMUN1\VC\Tools\MSVC\14311.311\bin\Hostx86\x64\link.exe /nologo @CMakeFiles\mono-sgen.rsp /out:mono\mini\mono-aot-cross.exe /implib:mono\mini\mono-aot-cross.lib /pdb:mono\mini\mono-aot-cross
.pdb /version:0.0 /machine:x64 /INCREMENTAL:NO /subsystem:console /STACK:0x800000 /LTCG /DEBUG /OPT:REF /OPT:ICF /OPT:NOICF /MANIFEST /MANIFESTFILE:mono\mini\mono-aot-cross.exe.manifest" failed (exit code 1120) with the following outp
ut:
LLVMCore.lib(SafepointIRVerifier.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(LoopAccessAnalysis.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMCore.lib(Verifier.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMCore.lib(Dominators.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMCore.lib(IRPrintingPasses.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(TypeBasedAliasAnalysis.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(ProfileSummaryInfo.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(TargetLibraryInfo.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(AssumptionCache.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(ScalarEvolution.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(ScopedNoAliasAA.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(StackSafetyAnalysis.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(TargetTransformInfo.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(PostDominators.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort
LLVMAnalysis.lib(RegionInfo.cpp.obj) : error LNK2001: 无法解析的外部符号 __std_init_once_link_alternate_names_and_abort

[hez2010]

It seems that you don't have LLVM installed on your machine.

[shenqi-xiaoafei]

I have installed LLVM and set up the environment.

[maraf]

Here is some docs https://github.com/dotnet/runtime/blob/main/docs/workflow/building/mono/README.md with requirements for building on Windows. Also you should be building with build.cmd -os browser -subset mono+libs -c Debug to get all runtime dependencies built

[shenqi-xiaoafei]

Using this command, the same error occurs.

[maraf]

Do you have all the requirements from the docs? Can you try deleting .\artifacts and build from scratch?

[shenqi-xiaoafei]

I have successfully compiled WASM! I upgraded Viusal Studio 17.1 to 17.8, deleted the artifacts folder and rebuilt the project.