> On Mar 16, 2016, at 6:59 PM, Zeng, Star <[email protected]> wrote:
> 
> On 2016/3/17 7:12, Andrew Fish wrote:
>> I was trying to move over to DxeDebugPrintErrorLevelLib, but I can't get it 
>> to build
>> 
>> For example I made DXE use 
>> DebugPrintErrorLevelLib|MdeModulePkg/Library/DxeDebugPrintErrorLevelLib/DxeDebugPrintErrorLevelLib.inf
>>  in the EmulatorPkg and I get this error:
>> 
>> /Users/andrewfish/work/src/edk2/EmulatorPkg/EmulatorPkg.dsc(...): error 
>> F002: Library 
>> [/Users/andrewfish/work/src/edk2/MdePkg/Library/UefiBootServicesTableLib/UefiBootServicesTableLib.inf]
>>  with constructors has a cycle
>>              consumed by 
>> /Users/andrewfish/work/src/edk2/MdePkg/Library/UefiLib/UefiLib.inf
>> 
>> The error message is not very helpful on root causing the issue....
>> 
>> But a circular constructor issue does not seem that strange in the DebugLib 
>> stack as everything uses that! If I go into DxeDebugPrintErrorLevelLib.inf  
>> and remove the HobLib I don't get the Constructor error, but I do get a link 
>> error.
>> 
>> So it looks like the DxeDebugPrintErrorLevelLib depends on the Hob lib that 
>> depends on the DebugLib that depends on the DxeDebugPrintErrorLevelLib. How 
>> did this every work? The only place I see it used is the Nt32Pkg, and I 
>> don't have a system to test that on????
> 
> Just tried NT32 with VS2015, and it builds and works well.
> 
> Liming & Yonghong, any idea on this?
> 

I was wondering if it had to do with the lower level libraries having a 
constructor? So maybe library implementation matters?

Thanks,

Andrew Fish

> Thanks,
> Star
>> 
>> Any ideas?
>> 
>> Thanks,
>> 
>> Andrew Fish
>> 
> 
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