[llvm-dev] Attempt to build MLIR.

[Stephen Neuendorffer via llvm-dev]

These errors seem pretty pervasive for me on a clean build.  It appears
that it arises because when tablegen'd headers are included in a .h file,
every place where that .h file is used needs a dependency on the
corresponding IncGen targets.  This seems broken in the short term and
unmaintainable in the long term.  There really needs to be a way of
automatically generating the right dependencies.

Steve


On Tue, Dec 24, 2019 at 9:13 AM Mehdi Amini via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi Sourabh,
>
> This usually indicates a missing dependency in our CMakeLists.txt, if
> you restart the build a couple of times it will likely succeed.
>
> I will try to fix this missing dependency today.
>
> --
> Mehdi
>
>
> On Tue, Dec 24, 2019 at 1:37 AM Sourabh Singh Tomar <sourav0311 at gmail.com>
> wrote:
>
>> Hello everyone,
>>
>> Since MLIR landed today. I'm trying to build it using
>> cmake ../llvm/ -DCMAKE_BUILD_TYPE=RELEASE -DLLVM_TARGETS_TO_BUILD=X86
>> -DLLVM_ALL_PROJECTS="clang;lld;lldb;mlir" -DBUILD_SHARED_LIBS=ON
>> -DCLANG_DEFAULT_LINKER:STRING=lld
>>
>> and also by adding -DLLVM_ALL_PROJECTS.
>>
>> It's giving this compilation error --
>>
>> Building CXX object
>> tools/mlir/lib/Analysis/CMakeFiles/obj.MLIRAnalysis.dir/AffineAnalysis.cpp.o
>> In file included from
>> /home/sourabh/mirror-upstream/mlir/include/mlir/Dialect/AffineOps/AffineOps.h:22:0,
>>                  from
>> /home/sourabh/mirror-upstream/mlir/lib/Analysis/AffineAnalysis.cpp:17:
>> /home/sourabh/mirror-upstream/mlir/include/mlir/Transforms/LoopLikeInterface.h:22:10:
>> fatal error: mlir/Transforms/LoopLikeInterface.h.inc: No such file or
>> directory
>>  #include "mlir/Transforms/LoopLikeInterface.h.inc"
>>           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> Am I missing something? -- some pre-requisites ?
>>
>> Thanks in anticipation!
>> Sourabh.
>> compilation terminated.
>>
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