Cannot build on Arch

[appetrosyan]

Hi. I've tried installing on Arch Linux with the following toolchaing:

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/app/.rustup

nightly-2019-12-05-x86_64-unknown-linux-gnu (default)
rustc 1.41.0-nightly (6d77e45f0 2019-12-04)

I've tried to build c2rust using cargo +nightly-2019-12-05 install c2rust --locked as suggested in response to #323 and the compilation failed with the following error:

/home/app/.cargo/registry/src/github.com-1ecc6299db9ec823/c2rust-ast-exporter-0.15.0/src/AstExporter.cpp: In lambda function:
/home/app/.cargo/registry/src/github.com-1ecc6299db9ec823/c2rust-ast-exporter-0.15.0/src/AstExporter.cpp:2466:37: error: ‘class clang::ASTContext’ has no member named ‘getRawCommentList’; did you mean ‘DeclRawComments’?
 2466 |             auto comments = Context.getRawCommentList().getCommentsInFile(file);
      |                                     ^~~~~~~~~~~~~~~~~
      |                                     DeclRawComments
/home/app/.cargo/registry/src/github.com-1ecc6299db9ec823/c2rust-ast-exporter-0.15.0/src/AstExporter.cpp: In function ‘std::vector<const char*, std::allocator<const char*> > augment_argv(int, const char**)’:
/home/app/.cargo/registry/src/github.com-1ecc6299db9ec823/c2rust-ast-exporter-0.15.0/src/AstExporter.cpp:2565:37: error: conversion from ‘llvm::StringRef’ to non-scalar type ‘std::string’ {aka ‘std::__cxx11::basic_string<char>’} requested
 2565 |     std::string resource_dir = P.str();
      |                                ~~~~~^~
make[3]: *** [CMakeFiles/clangAstExporter.dir/build.make:82: CMakeFiles/clangAstExporter.dir/AstExporter.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:103: CMakeFiles/clangAstExporter.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:110: CMakeFiles/clangAstExporter.dir/rule] Error 2
make: *** [Makefile:137: clangAstExporter] Error 2
thread 'main' panicked at '
command did not execute successfully, got: exit code: 2

build script failed, must exit now', /home/app/.cargo/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.44/src/lib.rs:885:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

[thedataking]

Are you on Clang/LLVM 11.1.0 by chance? If not, what version are you using. C2Rust is expected to work with LLVM 11.0.0 but. we haven't tested with newer releases IIRC.

[appetrosyan]

Hi, Not quite I'm on the point release 11.1.0-1.

[thedataking]

I tested with clang/LLVM 11.1.0 and it works on Ubuntu 20.10. Can you pull c2rust master and see if the following works?

path/to/c2rust/scripts/build_translator.py --with-llvm-version=11.1.0 --skip-signature-checks

[stevefan1999-personal]

The problem is, far as I know, the changes that made c2rust compatible to Clang 12 is only what you have in the master branch, but cargo install fetches the source only for the latest version known, which is the maintenance update. Either you downgrade to Clang 10 and use that build, or git clone --depth 1 it

[rinon]

Fixed with the v0.16.0 release