docs: add note about build issue workaround (#34)

* add note for build issue * try block quote
freref · Feb 9, 2025 · adf949f · adf949f
1 parent c161ad0
commit adf949f
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diff --git a/README.md b/README.md
@@ -54,6 +54,13 @@ zig build --fetch
 ```sh
 zig build --release=fast
 ```
+
+> [!NOTE]
+> There is a [known issue](https://github.com/freref/fancy-cat/issues/18) with some processors; if the build fails on step 7/10 with the error `LLVM ERROR: Do not know how to expand the result of this operator!` then try the command below instead:
+> ```
+> zig build --release=fast -Dcpu="skylake"
+> ```
+
 3. Install:  
 ```
 # Add to your PATH