Make the doc example obey ONNX_MLIR_BUILD_TESTS (llvm#1083)

* Make the doc example obey ONNX_MLIR_BUILD_TESTS

Currently, ONNX_MLIR_BUILD_TESTS controls EXCLUDE_FROM_ALL, however, the targets added through add_executable will always build. We follow the llvm pattern and explicitly set EXCLUDE_FROM_ALL in the add_onnx_mlir_executable function if it is set for the directory, so that add_executable targets don't always build.

Signed-off-by: Stella Stamenova <stilis@microsoft.com>

MLIR.cmake

@@ -192,7 +192,12 @@ function(add_onnx_mlir_executable name)
     ${ARGN}
     )
 
-  add_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
+  if (EXCLUDE_FROM_ALL)
+    add_executable(${name} EXCLUDE_FROM_ALL ${ARG_UNPARSED_ARGUMENTS})
+  else()
+    add_executable(${name} ${ARG_UNPARSED_ARGUMENTS})
+  endif()
+
   llvm_update_compile_flags(${name})
 
   if (ARG_DEPENDS)

docs/doc_example/CMakeLists.txt

@@ -34,7 +34,6 @@ if (WIN32)
     )
 endif()
 
-
 if (WIN32)
   set(OMRuntimeTestModelLibraryFiles ${CMAKE_CURRENT_BINARY_DIR}/add${CMAKE_SHARED_LIBRARY_SUFFIX})
   list(APPEND OMRuntimeTestModelLibraryFiles ${CMAKE_CURRENT_BINARY_DIR}/add${CMAKE_LINK_LIBRARY_SUFFIX})