[llvm-dev] Attempt to build MLIR.

[Johan Engelen via llvm-dev]

Hello all,
  FWIW, I am still hitting this [*] build error on release branch 10.x
(llvmorg-10.0.0-rc5) when building with:
`cmake -G Ninja -DLLVM_ENABLE_PROJECTS="clang;compiler-rt;lld;polly;mlir"
-DCMAKE_INSTALL_PREFIX="/Users/johan/llvm/llvmtrunkinstall"
-DLLVM_TARGETS_TO_BUILD="AArch64;ARM;Mips;MSP430;NVPTX;PowerPC;X86"
-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="RISCV;WebAssembly"
-DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON
-DLLVM_APPEND_VC_REV=ON -DLLVM_INSTALL_UTILS=ON ../../llvm` .
Note that I am building with Ninja, perhaps that's the reason?

Cheers,
  Johan

[*]
/Users/johan/llvm/llvm/mlir/include/mlir/Transforms/LoopLikeInterface.h:22:10:
fatal error: 'mlir/Transforms/LoopLikeInterface.h.inc' file not found
#include "mlir/Transforms/LoopLikeInterface.h.inc"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


On Mon, Jan 13, 2020 at 10:56 AM Sourabh Singh Tomar via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Not sure, tried couple of times. Seems like while building with
> "-DBUILD_SHARED_LIBS=ON" causes all these problems.
> However, building MLIR with this FLAG disabled -- building fine.
>
> --Sourabh.
>
> On Mon, Jan 13, 2020 at 11:47 AM Stephen Neuendorffer <
> stephen.neuendorffer at gmail.com> wrote:
>
>> 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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