Building `babble` from source fails linking because of `libfmt`

[virtualritz]

This is on Pop!_OS 22.04 LTS (Ubuntu-based).

I am building babble against llvm-17, build fails at the linking stage:

[ 42%] Linking CXX executable bbl-genbind
/usr/bin/ld: CMakeFiles/bbl-genbind.dir/src/bbl-genbind.cpp.o: in function `create_method_from_cmd(clang::CXXMethodDecl const*, bool, clang::CXXRecordDecl const*, clang::PrintingPolicy const&)':
bbl-genbind.cpp:(.text+0xd93): undefined reference to `fmt::v8::vformat[abi:cxx11](fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<fmt::v8::appender, char> >)'
/usr/bin/ld: CMakeFiles/bbl-genbind.dir/src/bbl-genbind.cpp.o: in function `create_constructor_from_ccd(clang::CXXConstructorDecl const*, clang::CXXRecordDecl const*, clang::PrintingPolicy const&)':
bbl-genbind.cpp:(.text+0x1048): undefined reference to `fmt::v8::vformat[abi:cxx11](fmt::v8::basic_string_view<char>, fmt::v8::basic_format_args<fmt::v8::basic_format_context<fmt::v8::appender, char> >)'
[...]

libfmt-dev (8.1.1) is installed as a dependency of the required libspdlog-dev.
Also tried building & installing libfmt manually but no luck.

[anderslanglands]

Ugh this is one of those "I think I've seen this before but I can't remember what it was" ones...

Are you compilling with GLIBC_USE_CXX11_ABI=0 by any chance?

[virtualritz]

Not that I know. This is just doing exactly what is written in the README but I omitted the -DCMAKE_PREFIX_PATH=<llvm_install_path> as I didn't need this on my own laptop on Ubuntu (24.10).

Maybe that is the culprit? I will retry on Monday when I have access to the Pop!OS machine again.

[anderslanglands]

Actually doing a bit of googling this might be because of how I'm building and using spdlog to get around cmake's insistence on installing all dependencies.

[anderslanglands]

OK I've just puhsed a potential fix. This does bump the minimum cmake version to 3.24 though so you'll likely need to install cmake manually or from the kitware ppa instead of relying on the os-provided version

[virtualritz]

After updating cmake to 3.25 I have another error on the Pop!OS machine now:

❯ cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
-- The C compiler identification is GNU 11.4.0
-- The CXX compiler identification is GNU 11.4.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test HAVE_FFI_CALL
-- Performing Test HAVE_FFI_CALL - Success
-- Found FFI: /usr/lib/x86_64-linux-gnu/libffi.so  
-- Could NOT find LibEdit (missing: LibEdit_INCLUDE_DIRS LibEdit_LIBRARIES) 
-- Performing Test Terminfo_LINKABLE
-- Performing Test Terminfo_LINKABLE - Success
-- Found Terminfo: /usr/lib/x86_64-linux-gnu/libtinfo.so  
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11") 
-- Could NOT find zstd (missing: zstd_LIBRARY zstd_INCLUDE_DIR) 
-- Found LibXml2: /usr/lib/x86_64-linux-gnu/libxml2.so (found version "2.9.13") 
-- Could NOT find CURL (missing: CURL_LIBRARY CURL_INCLUDE_DIR) 
-- Found LLVM 17.0.6: /usr/lib/llvm-17
-- Build spdlog: 1.12.0
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- Build type: Release
-- Configuring done
CMake Error at bbl/CMakeLists.txt:55 (add_executable):
  Impossible to link target 'bbl-translate' because the link item 'spdlog',
  specified with the feature 'WHOLE_ARCHIVE', has already occurred without
  any feature or 'DEFAULT' feature, which is not allowed.


-- Generating done
CMake Generate step failed.  Build files cannot be regenerated correctly.

[anderslanglands]

Hmm I'm stumped by this tbh. I just got github actions set up and everything builds and tests on ubuntu-22.04. Can you just use the generated build artifact from there? https://github.com/anderslanglands/babble/actions/runs/12847548725