llvm dev - Jun 2015 - [LLVMdev] Self-compiling clang on Windows

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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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?
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
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That worked, thanks!

On Wed, Jun 10, 2015 at 9:15 PM, Yaron Keren <yaron.keren at gmail.com>
wrote:
> 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?
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>
>
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