Building clad and LLVM from source with "Building from source LLVM, Clang and clad (development environment)" and multiple jobs fails

[efremale]

Build commands:

  LAST_KNOWN_GOOD_LLVM=$(wget https://raw.githubusercontent.com/vgvassilev/clad/master/LastKnownGoodLLVMRevision.txt -O - -q --no-check-certificate)
  LAST_KNOWN_GOOD_CLANG=$(wget https://raw.githubusercontent.com/vgvassilev/clad/master/LastKnownGoodClangRevision.txt -O - -q --no-check-certificate)
  git clone https://github.com/llvm-mirror/llvm.git src
  cd src; git checkout $LAST_KNOWN_GOOD_LLVM
  cd tools
  git clone https://github.com/llvm-mirror/clang.git clang
  cd clang ; git checkout $LAST_KNOWN_GOOD_CLANG
  cd ../
  git clone https://github.com/vgvassilev/clad.git clad
  cd ../
  cat patches tools/clad/patches/*.diff | patch -p0
  cd ../
  mkdir obj inst
  cd obj
  cmake -DCMAKE_BUILD_TYPE=Debug -DLLVM_TARGETS_TO_BUILD=host -DCMAKE_INSTALL_PREFIX=../inst ../src/
  make -j16 && make install -j16

Error:

In file included from ./src/tools/clad/../clang/include/clang/Basic/Diagnostic.h:18:
./src/tools/clad/../clang/include/clang/Basic/DiagnosticIDs.h:54:10: fatal error: 
'clang/Basic/DiagnosticCommonKinds.inc' file not found
#include "clang/Basic/DiagnosticCommonKinds.inc"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[schwarzschild-radius]

Bit of googling gave me this http://lists.llvm.org/pipermail/llvm-bugs/2011-October/020626.html.

[vgvassilev]

Indeed, we are missing some dependency I suspect between intrinsic_gen and clad. Running make clang && make clad should work around the problem.

[grimmmyshini]

This issue is solved now, however, I still failed to build all the binaries via make, not entirely sure why but building with cmake --build . built the whole project without any issues. The issue seems to be specific to the LLVM + Clang installation as mentioned here. Not sure if this is specific to my machine but I still thought I'd put it here in case anyone runs through the same issue again!

[vgvassilev]

Can you tell us your exact setup? You can try LAST_KNOWN_GOOD_CLANG to release_80?

[grimmmyshini]

Sure!

• System spec: Ubuntu 18.04 x86_64
• CMake: 3.10.2
• GNU Make: 4.1
• GCC: 9.2.1 LAST_KNOWN_GOOD_CLANG is release_90

Actually, I can build the above just fine using cmake --build . and the demos run just fine too. I can also try building release_80 just to check if this error still persists.

[vgvassilev]

The build infrastructure has significantly improved and I believe this is not an issue anymore. Please reopen if necessary.