[cfe-dev] Clang debug linking options on Windows

[Russell Wallace via cfe-dev]

That almost works. What am I still missing? I tried -g but no effect.

C:\t>clang -D_DEBUG -I/llvm/build/include -I/llvm/include -S -emit-llvm
-fms-compatibility-version=19 a.cpp

C:\t>clang a.ll \llvm\build\Debug\lib\*.lib
warning: overriding the module target triple with
x86_64-pc-windows-msvc18.0.0 [-Woverride-module]
1 warning generated.
LINK : warning LNK4098: defaultlib 'LIBCMTD' conflicts with use of other
libs; use /NODEFAULTLIB:library
LLVMSupport.lib(TargetParser.obj) : error LNK2001: unresolved external
symbol _CrtDbgReportW
libcpmtd.lib(stdthrow.obj) : error LNK2001: unresolved external symbol
_CrtDbgReportW
libcpmtd.lib(syserror.obj) : error LNK2001: unresolved external symbol
_CrtDbgReportW
LLVMSupport.lib(ConvertUTFWrapper.obj) : error LNK2001: unresolved external
symbol _CrtDbgReportW
LLVMSupport.lib(Host.obj) : error LNK2001: unresolved external symbol
_CrtDbgReportW
LLVMSupport.lib(MemoryBuffer.obj) : error LNK2001: unresolved external
symbol _CrtDbgReportW
etc...

On Fri, Sep 11, 2015 at 9:14 PM, Reid Kleckner <rnk at google.com> wrote:

> You're crossing the relase/debug MSVC CRT streams. Make sure all objects
> in a given image are using the same CRT.
>
> In your specific example, you should add -D_DEBUG to the command line. You
> want to simulate the effect of passing /MTd to cl.exe or clang-cl.exe.
>
> On Fri, Sep 11, 2015 at 10:07 AM, Russell Wallace via cfe-dev <
> cfe-dev at lists.llvm.org> wrote:
>
>> I'm trying to compile some code via IR and link it with the debug
>> libraries on Windows, but getting errors. A minimal test case:
>>
>> C:\t>type a.cpp
>> #define _HAS_EXCEPTIONS 0
>> #include <llvm/Support/Signals.h>
>>
>> int main() {
>>   llvm::sys::PrintStackTraceOnErrorSignal();
>>   return 0;
>> }
>>
>> C:\t>clang -I/llvm/build/include -I/llvm/include -S -emit-llvm
>> -fms-compatibility-version=19 a.cpp
>>
>> C:\t>clang a.ll \llvm\build\Debug\lib\*.lib
>> warning: overriding the module target triple with
>> x86_64-pc-windows-msvc18.0.0 [-Woverride-module]
>> 1 warning generated.
>> LLVMSupport.lib(Signals.obj) : error LNK2038: mismatch detected for
>> '_ITERATOR_DEBUG_LEVEL': value '2' doesn't match value '0' in a-db717b.o
>> LLVMSupport.lib(Signals.obj) : error LNK2038: mismatch detected for
>> 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value
>> 'MT_StaticRelease' in a-db717b.o
>> LLVMSupport.lib(Path.obj) : error LNK2038: mismatch detected for
>> '_ITERATOR_DEBUG_LEVEL': value '2' doesn't match value '0' in a-db717b.o
>> LLVMSupport.lib(Path.obj) : error LNK2038: mismatch detected for
>> 'RuntimeLibrary': value 'MTd_StaticDebug' doesn't match value
>> 'MT_StaticRelease' in a-db717b.o
>> LLVMSupport.lib(raw_ostream.obj) : error LNK2038: mismatch detected for
>> '_ITERATOR_DEBUG_LEVEL': value '2' doesn't match value '0' in a-db717b.o
>> ...etc...
>>
>> There's probably an option that I'm missing?
>>
>> _______________________________________________
>> cfe-dev mailing list
>> cfe-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev
>>
>>
>
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