[Mesa-dev] Build fail since configure.ac: rework llvm libs handling for 3.9+

[Michel Dänzer]

On 18/10/17 05:41 PM, Emil Velikov wrote:
> On 17 October 2017 at 15:39, Andy Furniss <adf.lists at gmail.com> wrote:
>> Emil Velikov wrote:
>>
>>>>> On a "bad" build (-DLLVM_BUILD_LLVM_DYLIB=ON) I get
>>>>>
>>>>> andy [~]$ llvm-config --link-shared --libs bitwriter
>>>>> llvm-config: error: missing: /usr/lib/libLLVMDemangle.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMSupport.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMBinaryFormat.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMCore.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMBitReader.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMMC.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMMCParser.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMObject.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMProfileData.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMAnalysis.so
>>>>> llvm-config: error: missing: /usr/lib/libLLVMBitWriter.so
>>>
>>>
>>> These here indicate that something in LLVM broke. Please report it
>>> ASAP so that we don't get a LLVM release with this bug.
>>
>>
>> https://bugs.llvm.org/show_bug.cgi?id=34977
>>
> Great, thank you. In the interim please use the LLVM_LINK_LLVM_DYLIB workaround.
> Just checked LLVM 5.0 w/o LLVM_LINK_LLVM_DYLIB - seems to also be
> broken in the same way.
> 
> Considering distributions (checked Fedora, Arch, Ubuntu and Debian)
> toggle both BUILD and LINK together, I'm inclined to keep things
> as-is.

Right, I'd recommend enabling LLVM_LINK_LLVM_DYLIB anyway when
LLVM_BUILD_LLVM_DYLIB is enabled. Is there any particular reason for
enabling the latter but not the former?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer