castXML cannot be build with llvm-3.8

[unknowingdisorder]

Hey, I just want to tell you that I was struggling to build castXML with llvm-3.8. I got the following error message:
$ cmake ../../src/castXML/

CMake Error at /usr/share/llvm-3.8/cmake/LLVMConfig.cmake:178 (include): include could not find load file:

/usr/share/llvm/cmake/LLVMExports.cmake Call Stack (most recent call first): CMakeLists.txt:64 (find_package)

CMake Error at /usr/share/llvm-3.8/cmake/LLVMConfig.cmake:181 (include): include could not find load file:

/usr/share/llvm/cmake/LLVM-Config.cmake Call Stack (most recent call first): CMakeLists.txt:64 (find_package)

CMake Error at src/CMakeLists.txt:46 (llvm_map_components_to_libnames): Unknown CMake command "llvm_map_components_to_libnames".

-- Configuring incomplete, errors occurred!

I removed llvm-3.8 and installed llvm-3.7 instead and everything works fine.

[florian-wagner]

Thanks for reporting. This is likely related to the fact that we have fixed the castxml version to a specific stable commit (bc1d8c2) rather than going with the newest version. While this fixed previous problems, it is obviously not optimal for people with newer llvm versions. @carsten-forty2: Maybe we can include a LLVM version check in cmake?

[kaufmanno]

Hi Florian,

I encountered this problem when trying to install on a fresh Ubuntu 16.04LTS with curl.

I think it is due to a reported bug in the Ubuntu llvm-3.8-dev package where links are broken during the packaging (see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819072)

I managed to fix it with this :

sudo apt-get install -y llvm-3.8-dev libclang-3.8-dev
sudo mkdir -p /usr/lib/llvm-3.8/share/llvm
sudo ln -s /usr/share/llvm-3.8/cmake /usr/lib/llvm-3.8/share/llvm/cmake
sudo sed -i -e '/get_filename_component(LLVM_INSTALL_PREFIX/ {s|^|#|}' -e '/^# Compute the installation prefix/i set(LLVM_INSTALL_PREFIX "/usr/lib/llvm-3.8")' /usr/lib/llvm-3.8/share/llvm/cmake/LLVMConfig.cmake
sudo sed -i '/_IMPORT_CHECK_TARGETS Polly/ {s|^|#|}' /usr/lib/llvm-3.8/share/llvm/cmake/LLVMExports-relwithdebinfo.cmake
sudo sed -i '/_IMPORT_CHECK_TARGETS sancov/ {s|^|#|}' /usr/lib/llvm-3.8/share/llvm/cmake/LLVMExports-relwithdebinfo.cmake
sudo ln -s /usr/lib/x86_64-linux-gnu/libLLVM-3.8.so.1 /usr/lib/llvm-3.8/lib/

An ubuntu package fix will probably come out soon...

Olivier

[florian-wagner]

Hi Olivier,

thanks a lot for the insight! I called CC=clang-3.8 CXX=clang++-3.8 cmake ../gimli again on Debian with llvm-3.8.1 and CastXML builds fine. @carsten-forty2 But during the pygimli compilation CastXML still looks for older versions.

/home/wagner/tmp/gimli/gimli/src/elementmatrix.h:170:18: warning: 'register' storage class
      specifier is deprecated [-Wdeprecated-register]
            for (register Index j = 0; j < size(); j ++) {
                 ^~~~~~~~~
castxml: /usr/lib/llvm-3.6/include/clang/AST/Decl.h:134: llvm::StringRef clang::NamedDecl::getName() const: Assertion `Name.isIdentifier() && "Name is not a simple identifier"' failed.
Aborted
Traceback (most recent call last):
  File "/home/wagner/tmp/gimli/gimli/python/generate_pygimli_code.py", line 605, in <module>
    generate(defined_symbols, options.extraIncludes)
  File "/home/wagner/tmp/gimli/gimli/python/generate_pygimli_code.py", line 257, in generate
    xml_generator_config=xml_generator_config
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pyplusplus/module_builder/boost_python_builder.py", line 106, in __init__
    , indexing_suite_version)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pyplusplus/module_builder/boost_python_builder.py", line 149, in __parse_declarations
    decls = reader.read_files( files, compilation_mode )
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/project_reader.py", line 249, in read_files
    return self.__parse_file_by_file(files)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/project_reader.py", line 293, in __parse_file_by_file
    reader.create_xml_file(header, prj_file.cached_source_file)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/source_reader.py", line 341, in create_xml_file
    " xml file does not exist")
RuntimeError: Error occurred while running CASTXML xml file does not exist

[carsten-forty2]

On Tuesday 30 August 2016 03:20:43 Florian Wagner wrote:

Hi Olivier,

thanks a lot for the insight! I called CC=clang-3.8 CXX=clang++-3.8 cmake ../gimli again on Debian with llvm-3.8.1 and CastXML builds fine. @carsten-forty2 But during the pygimli compilation CastXML still looks for older versions.

/home/wagner/tmp/gimli/gimli/src/elementmatrix.h:170:18: warning: 'register' storage class
      specifier is deprecated [-Wdeprecated-register]
            for (register Index j = 0; j < size(); j ++) {
                 ^~~~~~~~~
castxml: /usr/lib/llvm-3.6/include/clang/AST/Decl.h:134: llvm::StringRef clang::NamedDecl::getName() const: Assertion `Name.isIdentifier() && "Name is not a simple identifier"' failed.
Aborted
Traceback (most recent call last):
  File "/home/wagner/tmp/gimli/gimli/python/generate_pygimli_code.py", line 605, in <module>
    generate(defined_symbols, options.extraIncludes)
  File "/home/wagner/tmp/gimli/gimli/python/generate_pygimli_code.py", line 257, in generate
    xml_generator_config=xml_generator_config
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pyplusplus/module_builder/boost_python_builder.py", line 106, in __init__
    , indexing_suite_version)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pyplusplus/module_builder/boost_python_builder.py", line 149, in __parse_declarations
    decls = reader.read_files( files, compilation_mode )
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/project_reader.py", line 249, in read_files
    return self.__parse_file_by_file(files)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/project_reader.py", line 293, in __parse_file_by_file
    reader.create_xml_file(header, prj_file.cached_source_file)
  File "/home/wagner/tmp/gimli/thirdParty/dist-Clang-3.8.1-64/pygccxml/parser/source_reader.py", line 341, in create_xml_file
    " xml file does not exist")
RuntimeError: Error occurred while running CASTXML xml file does not exist

if you not have a global installed castxml

which castxml

there only compile a new with llvm-3.8 if there is no old in place.
I recommend using the CLEAN=1 environment first or removing the old thirdParty path manual.

[florian-wagner]

No global castxml installation and everything was in a clean directory. I tried again with 3.7, i.e. CLEAN=1 CC=clang-3.7 CXX=clang++-3.7 cmake ../gimli, but it seems like the CC and CXX environment variables are not used everywhere:

[...]
git checkout --force d5934bd08651dbda95a65ccadcc5f39637d7bc59 .
~/tmp/gimli/thirdParty
/usr/bin/clang-3.6
Setting clang to:  clang-3.6
SRC /home/wagner/tmp/gimli/thirdParty/src/castXML
 Cleaning /home/wagner/tmp/gimli/thirdParty/build-Clang-3.6.2-64/castXML
~/tmp/gimli/thirdParty/build-Clang-3.6.2-64/castXML ~/tmp/gimli/thirdParty
SRC /home/wagner/tmp/gimli/thirdParty/src/castXML
-- The C compiler identification is Clang 3.7.1
-- The CXX compiler identification is Clang 3.7.1

[carsten-forty2]

Setting CC or CXX will force the gimli build using this compilers.

Is there any existing clang-3.6 on the system?

command -v clang-3.6

/usr/bin/clang-3.6
Setting clang to:  clang-3.6

btw. I see that booth messages are dead ends and won't be used .. I remove them

-- The C compiler identification is Clang 3.7.1
-- The CXX compiler identification is Clang 3.7.1

means that cmake is build with clang-3.7

On Tuesday 30 August 2016 06:46:08 Florian Wagner wrote:

No global castxml installation and everything was in a clean directory. I tried again with 3.7, i.e. CLEAN=1 CC=clang-3.7 CXX=clang++-3.7 cmake ../gimli, but it seems like the CC and CXX environment variables are not used everywhere:

[...]
git checkout --force d5934bd08651dbda95a65ccadcc5f39637d7bc59 .
~/tmp/gimli/thirdParty
/usr/bin/clang-3.6
Setting clang to:  clang-3.6
SRC /home/wagner/tmp/gimli/thirdParty/src/castXML
 Cleaning /home/wagner/tmp/gimli/thirdParty/build-Clang-3.6.2-64/castXML
~/tmp/gimli/thirdParty/build-Clang-3.6.2-64/castXML ~/tmp/gimli/thirdParty
SRC /home/wagner/tmp/gimli/thirdParty/src/castXML
-- The C compiler identification is Clang 3.7.1
-- The CXX compiler identification is Clang 3.7.1

[florian-wagner]

CastXML builds fine with llvm 3.8 on my platform. So this really seems to be an Ubuntu specific issue as @kaufmanno already pointed out. I'm closing this issue.