In #22522 I said:
> RC="zig rc" will now work in combination with zig cc and CMake. Here's an example of cross-compiling a simple Windows GUI CMake project
>
> $ RC="zig rc" CC="zig cc --target=x86_64-windows-gnu" cmake .. -DCMAKE_SYSTEM_NAME=Windows -G Ninja
However, I didn't realize that the time that this only works because of the `-G Ninja` part. When not using Ninja as the build tool, CMake adds a workaround for 'very long lists of object files' where it takes all object files and runs them through `ar` to combine them into one archive:
4a11fd8dde/Modules/Platform/Windows-GNU.cmake (L141-L158)
This is a problem for the Windows resource use-case, because `ar` doesn't know how to deal with `.res` files and so this object combining step fails with:
unknown file type: foo.rc.res
Only the linker knows what to do with .res files (since it has its own `.res` -> `.obj` ('cvtres') conversion mechanism). So, when using Ninja, this object file combining step is skipped and the .res file gets passed to the linker and everyone is happy.
Note: When CMake thinks that its using `windres` as the Windows resource compiler, it will pass `-O coff` to windres which causes it to output a COFF object file instead of a `.res` file, which means that the `ar` step can succeed because it's only working on actual object files.
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This commit gives `zig rc` the ability to output COFF object files directly when `/:output-format coff` is provided as an argument. This effectively matches what happens when CMake uses `windres` for resource compilation, but requires the argument to be provided explicitly.
So, after this change, the following CMake cross-compilation use case will work, even when not using Ninja as the generator:
RC="zig rc /:output-format coff" CC="zig cc --target=x86_64-windows-gnu" cmake .. -DCMAKE_SYSTEM_NAME=Windows
Note: This mostly matches resinator v0.1.0 rather than the latest master version, since the latest master version focuses on adding support for .res -> .obj conversion which is not necessary for the future planned relationship of zig and resinator (resinator will likely be moved out of the compiler and into the build system, a la translate-c).
So, ultimately the changes here consist mostly of bug fixes for obscure edge cases.
This takes the code that was previously in src/Compilation.zig to turn resinator diagnostics into Zig error bundles and puts it in resinator/main.zig, and then makes resinator emit the resulting error bundles via std.zig.Server (which is used by the build runner, etc). Also adds support for turning Aro diagnostics into ErrorBundles.
This moves .rc/.manifest compilation out of the main Zig binary, contributing towards #19063
Also:
- Make resinator use Aro as its preprocessor instead of clang
- Sync resinator with upstream
