[LLVMdev] Self-compiling clang on Windows

[Yaron Keren]

The quoted source is about 'error' whereas the source is 'Error' with
uppercase E.
A macro thing? could you try renaming the variable to Error1 and re-compile?


2015-06-10 22:43 GMT+03:00 Russell Wallace <russell.wallace at gmail.com>:

> I'm trying to get clang 3.6.1 to compile itself on Windows, using this
> command line:
>
> msbuild /p:Configuration=Release /p:CLToolExe=clang-cl.exe
> /p:CLToolPath=c:\llvm\build\Release\bin\ /p:TrackFileAccess=false
> /p:Platform="x64" /fileLogger ALL_BUILD.vcxproj
>
> It barfed on an occurrence of __try but that was only in a test file so I
> commented it out and retried. Now it's getting an error I can't quite make
> sense of:
>
>   In file included from C:\llvm2\lib\Support\TimeValue.cpp:55:
> C:\llvm2\lib\Support/Windows/TimeValue.inc(48,7): warning : unused
> variable 'Error' [-Wunused-variable]
> [C:\llvm2\build\lib\Support\LLVMSupport.vcxproj]
> CL : int error =: :_localtime64_s(&Storage, &OurTime);
> [C:\llvm2\build\lib\Support\LLVMSupport.vcxproj]
>         ^
>   1 warning generated.
>   The command exited with code -1.
> Done executing task "CL" -- FAILED.
> Done building target "ClCompile" in project "LLVMSupport.vcxproj" --
> FAILED.
> Done Building Project "C:\llvm2\build\lib\Support\LLVMSupport.vcxproj"
> (default targets) -- FAILED.
>
> That says 'warning generated' but it looks like a syntax error not an
> unused variable warning, and it is the one place in the build where the
> command exited with code -1. And the final verdict on the unsuccessful
> build:
>
> "C:\llvm2\build\ALL_BUILD.vcxproj" (default target) (1) ->
> "C:\llvm2\build\utils\FileCheck\FileCheck.vcxproj" (default target) (2) ->
> "C:\llvm2\build\lib\Support\LLVMSupport.vcxproj" (default target) (3) ->
> (ClCompile target) ->
>   CL : int error =: :_localtime64_s(&Storage, &OurTime);
> [C:\llvm2\build\lib\Support\LLVMSupport.vcxproj]
>
>     135 Warning(s)
>     1 Error(s)
>
> So it seems to be saying that was the one error that prevented the build
> from proceeding. So I took a look in that file, and here's the offending
> line 48:
>
>   int Error = ::_localtime64_s(&Storage, &OurTime);
>
> ... Contrary to the report, no syntax error, no space between the :'s. I
> looked at a hex dump of the file and it is as it seems here, still no
> error. I'd be wondering about cosmic rays flipping bits in RAM but I tried
> the build twice and got the mysterious error each time.
>
> Anyone have any idea what's going on? Am I just missing something terribly
> obvious?
>
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