fix building with CMake + Ninja after pytorch#9077 (pytorch#9246)

swolchok · web-flow · commit e9cf64a7f681 · 2025-03-13T16:06:20.000-07:00
Needed to tell CMake to tell Ninja where flatc comes from.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -509,6 +509,7 @@ if(EXECUTORCH_BUILD_FLATC)
                -DCMAKE_BUILD_TYPE=Release
                -DCMAKE_CXX_FLAGS="-DFLATBUFFERS_MAX_ALIGNMENT=${FLATBUFFERS_MAX_ALIGNMENT}"
     INSTALL_COMMAND ""
+    BUILD_BYPRODUCTS <BINARY_DIR>/flatc
   )
   ExternalProject_Get_Property(flatbuffers BINARY_DIR)
   set(FLATC_EXECUTABLE ${BINARY_DIR}/flatc)

Original file line number	Diff line number	Diff line change
`@@ -509,6 +509,7 @@ if(EXECUTORCH_BUILD_FLATC)`
`509`	`509`	`-DCMAKE_BUILD_TYPE=Release`
`510`	`510`	`-DCMAKE_CXX_FLAGS="-DFLATBUFFERS_MAX_ALIGNMENT=${FLATBUFFERS_MAX_ALIGNMENT}"`
`511`	`511`	`INSTALL_COMMAND ""`
	`512`	`+ BUILD_BYPRODUCTS <BINARY_DIR>/flatc`
`512`	`513`	`)`
`513`	`514`	`ExternalProject_Get_Property(flatbuffers BINARY_DIR)`
`514`	`515`	`set(FLATC_EXECUTABLE ${BINARY_DIR}/flatc)`