Build: cmake: fixes #26247 update cmake to work with new required dep lark for BIM (#26407)

cMake/FindLARK.cmake

@@ -0,0 +1,53 @@
+# - Find the lark library
+# This module finds if lark is installed, and sets the following variables
+# indicating where it is.
+#
+#  LARK_FOUND            - was lark found
+#  LARK_VERSION          - the version of lark found as a string
+#  LARK_VERSION_MAJOR    - the major version number of lark
+#  LARK_VERSION_MINOR    - the minor version number of lark
+#  LARK_VERSION_PATCH    - the patch version number of lark
+
+include(FindPackageHandleStandardArgs)
+
+if(Python3_EXECUTABLE)
+    message(STATUS "FindLark: Using Python3_EXECUTABLE = ${Python3_EXECUTABLE}")
+
+    # try to import lark into Python interpreter
+    execute_process(
+        COMMAND "${Python3_EXECUTABLE}" "-c"
+        "import lark; print(lark.__version__)"
+        RESULT_VARIABLE _LARK_SEARCH_SUCCESS
+        OUTPUT_VARIABLE LARK_VERSION
+        ERROR_VARIABLE _LARK_ERROR_VALUE
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+
+    message(DEBUG "FindLark: Result = ${_LARK_SEARCH_SUCCESS}")
+    message(DEBUG "FindLark: Version = ${LARK_VERSION}")
+    message(DEBUG "FindLark: Error = ${_LARK_ERROR_VALUE}")
+
+    if(_LARK_SEARCH_SUCCESS MATCHES 0)
+        # extract version components
+        string(REGEX REPLACE "\\." ";" _LARK_VERSION_LIST ${LARK_VERSION})
+        list(LENGTH _LARK_VERSION_LIST _LARK_VERSION_LIST_LEN)
+        if(_LARK_VERSION_LIST_LEN GREATER_EQUAL 1)
+            list(GET _LARK_VERSION_LIST 0 LARK_VERSION_MAJOR)
+        endif()
+        if(_LARK_VERSION_LIST_LEN GREATER_EQUAL 2)
+            list(GET _LARK_VERSION_LIST 1 LARK_VERSION_MINOR)
+        endif()
+        if(_LARK_VERSION_LIST_LEN GREATER_EQUAL 3)
+            list(GET _LARK_VERSION_LIST 2 LARK_VERSION_PATCH)
+        endif()
+    else()
+        message(STATUS "The BIM workbench requires the lark python package / module to be installed")
+    endif()
+else()
+    message(STATUS "FindLark: Python3_EXECUTABLE not set")
+endif()
+
+find_package_handle_standard_args(LARK
+    REQUIRED_VARS LARK_VERSION
+    VERSION_VAR LARK_VERSION
+)

cMake/FreeCAD_Helpers/PrintFinalReport.cmake

@@ -221,6 +221,9 @@ macro(PrintFinalReport)
     conditional(fmt fmt_FOUND "Sources downloaded to ${fmt_SOURCE_DIR}" "${fmt_VERSION}")
     conditional(yaml-cpp yaml-cpp_FOUND "not found" "${yaml-cpp_VERSION}")
     conditional(Vtk VTK_FOUND "not found" ${VTK_VERSION})
+    if(BUILD_BIM)
+        conditional(Lark LARK_FOUND "not found" "${LARK_VERSION}")
+    endif()
 
     section_end()
 

cMake/FreeCAD_Helpers/SetupLark.cmake

@@ -0,0 +1,7 @@
+macro(SetupLark)
+    # ------------------------------ Lark ------------------------------
+
+    find_package(LARK MODULE REQUIRED)
+    message(STATUS "Found Lark: version ${LARK_VERSION}")
+
+endmacro()