Temporary workaround to exclude adding LLVM include directories when …

…not using the bundled LLVM.

Closes https://github.com/google/iree/pull/2193

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/iree/pull/2193 from stellaraccident:llvmfix1 a178757ce09777890ed08ea46b8926ec1df0d2b8
PiperOrigin-RevId: 316019310

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ee931a..a19ab82 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -220,6 +220,9 @@
   if(${IREE_MLIR_DEP_MODE} STREQUAL "DISABLED")
     message(STATUS "Not adding MLIR/LLVM dep due to IREE_MLIR_DEP_MODE=DISABLED")
   elseif(${IREE_MLIR_DEP_MODE} STREQUAL "BUNDLED")
+    # TODO: See iree_copts.cmake where it sets include directories for this
+    # case. This should be cleaned up to be all in one place or the other for
+    # all modes.
     message(STATUS "Adding bundled LLVM source dependency")
     add_iree_mlir_src_dep("third_party/llvm-project")
   elseif(${IREE_MLIR_DEP_MODE} STREQUAL "INSTALLED")
@@ -363,3 +366,6 @@
 if(${IREE_BUILD_PYTHON_BINDINGS})
   iree_complete_py_extension_link_options()
 endif()
+
+set(IREE_PUBLIC_INCLUDE_DIRS "${IREE_COMMON_INCLUDE_DIRS}"
+    CACHE INTERNAL "IREE: Include Directories" FORCE)

build_tools/cmake/iree_copts.cmake

diff --git a/build_tools/cmake/iree_copts.cmake b/build_tools/cmake/iree_copts.cmake
index f3b2cf3..cec163a 100644
--- a/build_tools/cmake/iree_copts.cmake
+++ b/build_tools/cmake/iree_copts.cmake
@@ -137,12 +137,15 @@
   set(LLVM_USE_LINKER ${IREE_USE_LINKER} CACHE STRING "" FORCE)
 endif()
 
-list(APPEND IREE_COMMON_INCLUDE_DIRS
-  ${PROJECT_SOURCE_DIR}/third_party/llvm-project/llvm/include
-  ${PROJECT_BINARY_DIR}/third_party/llvm-project/llvm/include
-  ${PROJECT_SOURCE_DIR}/third_party/llvm-project/mlir/include
-  ${PROJECT_BINARY_DIR}/third_party/llvm-project/llvm/tools/mlir/include
-)
+# TODO: This should go in add_iree_mlir_src_dep at the top level.
+if(IREE_MLIR_DEP_MODE STREQUAL "BUNDLED")
+  list(APPEND IREE_COMMON_INCLUDE_DIRS
+    ${PROJECT_SOURCE_DIR}/third_party/llvm-project/llvm/include
+    ${PROJECT_BINARY_DIR}/third_party/llvm-project/llvm/include
+    ${PROJECT_SOURCE_DIR}/third_party/llvm-project/mlir/include
+    ${PROJECT_BINARY_DIR}/third_party/llvm-project/llvm/tools/mlir/include
+  )
+endif()
 
 set(MLIR_TABLEGEN_EXE mlir-tblgen)
 set(IREE_TABLEGEN_EXE iree-tblgen)