Generating pinvoke wrappers using ClangSharpPInvokeGenerator generates CXError_Failure errors

I’m trying to generate pinvoke wrappers for poppler cpp header files on ubuntu.

You can see the code for those those headers here https://gitlab.freedesktop.org/poppler/poppler/-/blob/master/cpp/poppler-font.h

Poppler is installed on my system via apt

I’m running the generate tool as follows

~/.dotnet/tools/ClangSharpPInvokeGenerator @generate.rsp

The response file looks like the following

--config
compatible-codegen
generate-tests-xunit
multi-file
unix-types
log-potential-typedef-remappings
log-visited-files 
--file
poppler-font.h
poppler-document.h
poppler-page.h
poppler-toc.h
poppler-version.h
--namespace
Popper.Interop
--output
./output
--test-output
./tests
--include-directory
/usr/include/poppler/cpp
/usr/include/poppler
--language
c++

I’m using the 11.0.0-beta3 tool installed globally

 dotnet tool install --global ClangSharpPInvokeGenerator --version 11.0.0-beta3

Version of clang is the following

❯ clang --version                                                               
clang version 10.0.0-4ubuntu1 
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

Whenever I run the generator tool, I get the following errors

Error: Parsing failed for 'poppler-font.h' due to 'CXError_Failure'.
Skipping 'poppler-font.h' due to one or more errors listed above.

Error: Parsing failed for 'poppler-document.h' due to 'CXError_Failure'.
Skipping 'poppler-document.h' due to one or more errors listed above.

Error: Parsing failed for 'poppler-page.h' due to 'CXError_Failure'.
Skipping 'poppler-page.h' due to one or more errors listed above.

Error: Parsing failed for 'poppler-toc.h' due to 'CXError_Failure'.
Skipping 'poppler-toc.h' due to one or more errors listed above.

Error: Parsing failed for 'poppler-version.h' due to 'CXError_Failure'.
Skipping 'poppler-version.h' due to one or more errors listed above.

I’m trying to figure out why this tool is failing, but the errors don’t tell me much. Is there any way for me to get more information? Just trying to figure out what the next steps should be.

Thanks for your help.

Issue Analytics

State:
Created 2 years ago
Comments:10 (4 by maintainers)

Top GitHub Comments

1reaction

tannergoodingcommented, Oct 31, 2021

Would you be ok if I submitted a PR for the README with some of these steps in there? Or do you think this would change too often to be useful?

I’m definitely fine with some additional hints in the docs or even in the failure case on the command line.

Most of the time right now we only expose what libClang itself reports, which is often less than helpful.

1reaction

tannergoodingcommented, Oct 31, 2021

Hmmm. I just tried on a clean machine and everything looks to work as expected.

ClangSharp 13.0.0

I did the following

sudo apt install git gcc clang-13 llvm-13-dev
git clone https://github.com/microsoft/clangsharp
cd ./clangsharp
OVERRIDE_RUNTIME_IDENTIFIER=ubuntu.20.04-x64
./scripts/cibuild.sh --ci

That failed, so I then did:

sudo cp ~/.nuget/packages/libclangsharp.runtime.ubuntu.20.04-x64/13.0.0-beta1/runtimes/ubuntu.20.04-x64/native/libClangSharp.so /usr/lib/x86_64-linux-gnu/libClangSharp.so
./scripts/cibuild.sh --ci

And everything succeeded.

ClangSharp 12.0.0

I did the following:

sudo apt install git gcc clang-12 llvm-12-dev
install .NET 5: https://docs.microsoft.com/en-us/dotnet/core/install/linux-ubuntu#2004-
dotnet tool install --global ClangSharpPInvokeGenerator --version 12.0.0-beta2
download and extract https://www.nuget.org/packages/libClangSharp.runtime.ubuntu.20.04-x64/12.0.0-beta1
sudo cp ~/downloads/libclangsharp.runtime.ubuntu.20.04-x64/12.0.0-beta1/runtimes/ubuntu.20.04-x64/native/libClangSharp.so /usr/lib/x86_64-linux-gnu/libClangSharp.so
echo "void M();" > Test.h
ClangSharpPInvokeGenerator --file Test.h -n Test -o ./Test.cs

That failed with the type load error, so I did:

ldd /usr/lib/x86_64-linux-gnu/libClangSharp.so
- This shows libclang.so.12 couldn’t be resolved, as you saw
sudo ln -s /usr/lib/x86_64-linux-gnu/libclang-12.so.1 /usr/lib/x86_64-linux-gnu/libclang.so.12
ClangSharpPInvokeGenerator --file Test.h -n Test -o ./Test.cs

And everything succeeded.

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