[Mlir-commits] [mlir] [mlir][XeVM] Use libocloc API for binary generation. (PR #188353)

[Artem Kroviakov]

================
@@ -0,0 +1,82 @@
+# Findocloc.cmake
+
+# Define a function to search for ocloc
+function(find_ocloc)
+    message(STATUS "Searching for ocloc")
+
+    if(WIN32)
+        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+            set(OCLOC_SUFFIX "64")
+        else()
+            set(OCLOC_SUFFIX "32")
+        endif()
+
+        set(OCLOC_EXE_PATHS "${OCLOC_PACKAGE_DIR}" "${OCLOC_PACKAGE_DIR}/bin")
+        set(OCLOC_LIB_PATHS "${OCLOC_PACKAGE_DIR}" "${OCLOC_PACKAGE_DIR}/lib")
+        set(OCLOC_INC_PATHS "${OCLOC_PACKAGE_DIR}" "${OCLOC_PACKAGE_DIR}/include")
+    else()
+        set(OCLOC_SUFFIX "")
+
+        set(OCLOC_EXE_PATHS "${OCLOC_PACKAGE_DIR}/bin")
+        set(OCLOC_LIB_PATHS "${OCLOC_PACKAGE_DIR}/lib")
+        set(OCLOC_INC_PATHS "${OCLOC_PACKAGE_DIR}/include")
+
+        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+            list(APPEND OCLOC_LIB_PATHS
+                "${OCLOC_PACKAGE_DIR}/lib64"
+                "${OCLOC_PACKAGE_DIR}/lib/x86_64-linux-gnu")
+        endif()
+    endif()
+
+    # Search for ocloc executable
----------------
akroviakov wrote:

CMake [`find_program` doc](https://cmake.org/cmake/help/latest/command/find_program.html) says:

> Prior to searching, find_program checks if variable <VAR> is defined. If the variable is not defined, the search will be performed

The 1st call with `NO_DEFAULT_PATH` is to prioritize the `CMAKE` parameter
`OCLOC_PACKAGE_DIR` over the system paths like `/usr/lib/libocloc.so`
or `/usr/include/ocloc_api.h`.

https://github.com/llvm/llvm-project/pull/188353