[CMake] Remove requirement of NumPy header files

[efferifick]

NumPy header files were required for building MLIR, however the NumPy C-API is never used. In other words, NumPy is not a build time dependency. numpy, the python package, is required at runtime for the python bindings tests. In particular the file mlir/python/mlir/runtime/np_to_memref.py and all tests which may use it. This commit removes the build time dependency, but the runtime dependency remains through the requirements.txt file.

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[llvmbot]

@llvm/pr-subscribers-mlir

Author: Erick Ochoa (efferifick)

Changes

NumPy header files were required for building MLIR, however the NumPy C-API is never used. In other words, NumPy is not a build time dependency. numpy, the python package, is required at runtime for the python bindings tests. In particular the file mlir/python/mlir/runtime/np_to_memref.py and all tests which may use it. This commit removes the build time dependency, but the runtime dependency remains through the requirements.txt file.

---

Full diff: https://github.com/llvm/llvm-project/pull/108465.diff

1 Files Affected:

• (modified) mlir/cmake/modules/MLIRDetectPythonEnv.cmake (+1-1)

diff --git a/mlir/cmake/modules/MLIRDetectPythonEnv.cmake b/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
index 0a486c1bbb5493..c07c55b1e17ad5 100644
--- a/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
+++ b/mlir/cmake/modules/MLIRDetectPythonEnv.cmake
@@ -19,7 +19,7 @@ macro(mlir_configure_python_dev_packages)
   set(_python_development_component Development.Module)
 
   find_package(Python3 ${LLVM_MINIMUM_PYTHON_VERSION}
-    COMPONENTS Interpreter ${_python_development_component} NumPy REQUIRED)
+    COMPONENTS Interpreter ${_python_development_component} REQUIRED)
   unset(_python_development_component)
   message(STATUS "Found python include dirs: ${Python3_INCLUDE_DIRS}")
   message(STATUS "Found python libraries: ${Python3_LIBRARIES}")

[makslevental]

Cool I think this is the right thing - objections/context @stellaraccident?

[stellaraccident]

Good catch. Thank you.

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