Cross-compiling a #Rust project that has custom build scripts that build C/C++ dependencies is an absolute clusterfuck!
I'm trying to cross-compile a Rust project from #Linux -> #Windows (x86_64-pc-windows-gnu) and I get walls of errors!
Some I could already fix by setting env vars to different compilers (gcc, g++, oh my!), but now I'm stuck. Maybe some missing compiler flags to gcc?
Or could it be related to this?
=> https://stackoverflow.com/a/53635241
Hm... I think I'm missing the package mingw-w64, which are compiler tools for Windows specifically (where everything is statically linked?)
=> https://launchpad.net/ubuntu/+source/mingw-w64
Let's install the package and try again...
Ha! After installing the package and setting the env variables
export CXX=x86_64-w64-mingw32-g++
export CC=x86_64-w64-mingw32-gcc
the error is gone...
...but ofc I get a new error 😅
error: could not find native static library ggml, perhaps an -L flag is missing?
Note: I'm trying to cross-compile whisper-rs, which uses whisper.cpp, which uses ggml:
https://github.com/ggml-org/whisper.cpp
Maybe I need to do this, but how from cargo?
=> https://github.com/ggml-org/whisper.cpp/issues/168
Urgh, such a waste of time...😮💨
Ok, enough cross-compile errors for today. Maybe I'll have a look at it again tomorrow.
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![Output of the terminal after cross-compiling the whisper-rs crate from Linux to Windows (warning: the output is very long):
-- Detecting C compiler ABI info - failed
Called from: [3] /usr/share/cmake-3.28/Modules/CMakeDetermineCompilerABI.cmake
[2] /usr/share/cmake-3.28/Modules/CMakeTestCCompiler.cmake
[1] /home/jan/Dev-Projects/repos/talky/target/x86_64-pc-windows-gnu/release/build/whisper-rs-sys-90a1c9a45fb90ba6/out/whisper.cpp/CMakeLists.txt
-- Check for working C compiler: /usr/bin/gcc
Called from: [3] /usr/share/cmake-3.28/Modules/CMakeTestCompilerCommon.cmake
[2] /usr/share/cmake-3.28/Modules/CMakeTestCCompiler.cmake
[1] /home/jan/Dev-Projects/repos/talky/target/x86_64-pc-windows-gnu/release/build/whisper-rs-sys-90a1c9a45fb90ba6/out/whisper.cpp/CMakeLists.txt
-- Check for working C compiler: /usr/bin/gcc - broken
Called from: [3] /usr/share/cmake-3.28/Modules/CMakeTestCompilerCommon.cmake
[2] /usr/share/cmake-3.28/Modules/CMakeTestCCompiler.cmake
[1] /home/jan/Dev-Projects/repos/talky/target/x86_64-pc-windows-gnu/release/build/whisper-rs-sys-90a1c9a45fb90ba6/out/whisper.cpp/CMakeLists.txt
-- Configuring incomplete, errors occurred!
--- stderr
./whisper.cpp/ggml/include/ggml.h:210:10: fatal error: 'stdio.h' file not found](https://cdn.masto.host/floss/media_attachments/files/115/073/275/244/265/626/original/6d35e901b44a229a.png)