Bug#943623: objects in libclangIndex.a are llvm ir bitcode

[Sylvestre Ledru]

Hello,

Le 27/10/2019 à 13:08, Shengjing Zhu a écrit :
> Package: libclang-9-dev
> Version: 1:9.0.0-1
> Severity: serious
> Control: affects -1 ccls
> 
> As for 1:9.0.0-1
> 
> ar x /usr/lib/llvm-9/lib/libclangIndex.a
> file *.o
> 
> CodegenNameGenerator.cpp.o: LLVM IR bitcode
> CommentToXML.cpp.o:         LLVM IR bitcode
> FileIndexRecord.cpp.o:      LLVM IR bitcode
> IndexBody.cpp.o:            LLVM IR bitcode
> IndexDecl.cpp.o:            LLVM IR bitcode
> IndexingAction.cpp.o:       LLVM IR bitcode
> IndexingContext.cpp.o:      LLVM IR bitcode
> IndexSymbol.cpp.o:          LLVM IR bitcode
> IndexTypeSourceInfo.cpp.o:  LLVM IR bitcode
> USRGeneration.cpp.o:        LLVM IR bitcode
> 
> While version 1:9-1 shows
> 
> CodegenNameGenerator.cpp.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> CommentToXML.cpp.o:         ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> FileIndexRecord.cpp.o:      ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexBody.cpp.o:            ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexDecl.cpp.o:            ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexingAction.cpp.o:       ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexingContext.cpp.o:      ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexSymbol.cpp.o:          ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> IndexTypeSourceInfo.cpp.o:  ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> USRGeneration.cpp.o:        ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
> 
> This causes GNU ld fails to link, errors are:
> 
>    /usr/lib/llvm-9/lib/libclangIndex.a error adding symbols: archive has no index; run ranlib to add one
> 
> I checked the upstream prebuild tarball, the objects in libclangIndex.a are ELF.
> 
> So I think this is bug in the Debian package, and is a regression from the version in testing.

Interesting!
A patch would be appreciated.

FYI, the change between 9-1 and 9.0.0-1 is that I am using the github project
and the new method to enable/disable projects

S