[Mlir-commits] [mlir] [mlir][Target] Support Fatbin target for static nvptxcompiler (PR #118044)

[Mehdi Amini]

================
@@ -66,27 +66,39 @@ if ("NVPTX" IN_LIST LLVM_TARGETS_TO_BUILD)
       set(MLIR_CUDAToolkit_ROOT ${CUDAToolkit_LIBRARY_ROOT})
     endif()
 
-    # Add the `nvptxcompiler` library.
+    # Add the `nvptxcompiler` library and the `nvfatbin` library.
     if(MLIR_ENABLE_NVPTXCOMPILER)
       # Find the `nvptxcompiler` library.
       # TODO: Bump the MLIR CMake version to 3.25 and use `CUDA::nvptxcompiler_static`.
       find_library(MLIR_NVPTXCOMPILER_LIB_PATH nvptxcompiler_static
                   PATHS ${CUDAToolkit_LIBRARY_DIR} NO_DEFAULT_PATH)
+      find_library(MLIR_NVFATBIN_LIB_PATH nvfatbin_static
+                  PATHS ${CUDAToolkit_LIBRARY_DIR} NO_DEFAULT_PATH)
 
       # Fail if `nvptxcompiler_static` couldn't be found.
       if(MLIR_NVPTXCOMPILER_LIB_PATH STREQUAL "MLIR_NVPTXCOMPILER_LIB_PATH-NOTFOUND")
         message(FATAL_ERROR
                 "Requested using the `nvptxcompiler` library backend but it couldn't be found.")
       endif()
 
+      # Fail if `nvfatbin_static` couldn't be found.
+      if(MLIR_NVFATBIN_LIB_PATH STREQUAL "MLIR_NVFATBIN_LIB_PATH-NOTFOUND")
+        message(FATAL_ERROR
+                "Requested using the `nvfatbin` library backend but it couldn't be found.")
----------------
joker-eph wrote:

```suggestion
                "Requested using the static `nvptxcompiler` library which requires the 'nvfatbin` library, but it couldn't be found.")
```

https://github.com/llvm/llvm-project/pull/118044