Clang version to build llvm about lyra HOT 9 CLOSED

The README has instructions on how to build a custom clang. Do you still get the error after following those.

from lyra.

Yes, i have used the command "cmake -G Ninja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_ENABLE_PROJECTS="clang" -DCMAKE_BUILD_TYPE=release ../llvm".

from lyra.

Did that work? And did you ninja installed clang afterwards?

from lyra.

It did not work. About ”-DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++“, does it support other compiler(gcc or g++)?

from lyra.

Currently only clang is supported, because the std implementations need to be the same as the ones used to build the .so library.

from lyra.

The question seems to be what version of clang you can use to build a bootstrapped clang. We have used clang 6.0 to 12.0 to build our clang toolchain. I believe 3.9.1 is quite old circa 2016. Most package managers have a more recent version that you could try (if in ubuntu/debian, do apt update before installing clang). We haven't tried using gcc or other compilers, so to keep things simple I would try using a more recent clang.

from lyra.

When i use bazel to build the project, i encountered this error:
WARNING: /search/odin/zhuweifeng/.cache/bazel/bazel_zhuweifeng/cbee13c87ab2f3c1be98316600f9f92e/external/com_google_audio_dsp/third_party/fft2d/BUILD:3:11: in linkstatic attribute of cc_library rule @com_google_audio_dsp//third_party/fft2d:fft2d: setting 'linkstatic=1' is recommended if there are no object files
INFO: Analyzed target //:encoder_main (53 packages loaded, 1576 targets configured).
INFO: Found 1 target...
ERROR: /search/odin/zhuweifeng/.cache/bazel/bazel_zhuweifeng/cbee13c87ab2f3c1be98316600f9f92e/external/com_google_audio_dsp/audio/dsp/portable/BUILD:319:10: Compiling audio/dsp/portable/write_wav_file_generic.c failed: undeclared inclusion(s) in rule '@com_google_audio_dsp//audio/dsp/portable:write_wav_file_generic':
this rule is missing dependency declarations for the following files included by 'audio/dsp/portable/write_wav_file_generic.c':
'/search/odin/zhuweifeng/bazel/llvm-project/build_clang/lib/clang/12.0.0/include/stdint.h'
'/search/odin/zhuweifeng/bazel/llvm-project/build_clang/lib/clang/12.0.0/include/stddef.h'
'/search/odin/zhuweifeng/bazel_/llvm-project/build_clang/lib/clang/12.0.0/include/stdarg.h'
Target //:encoder_main failed to build
INFO: Elapsed time: 55.377s, Critical Path: 13.00s
INFO: 223 processes: 72 internal, 151 processwrapper-sandbox.
FAILED: Build did NOT complete successfully
Can you give me some suggestions?

from lyra.

Did you install the custom clang version like explained in the README file? Particularly, did you run "sudo ninja install"? Because it seems like it isn't finding the includes that should be under /usr/local/lib/clang/12.0.0/include. Maybe @mchinen has more insight on this particular error.

from lyra.

The new Lyra v0.0.2 doesn't require any custom clang installation anymore.

from lyra.