Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/cmake/ClangDetectTool.cmake

@@ -0,0 +1,42 @@
+function(clang_detect_tool VAR NAME OPTS)
+  set(NAMES "")
+  foreach(CNT RANGE 12 22)
+    list(APPEND NAMES "${NAME}-${CNT}")
+  endforeach()
+  list(REVERSE NAMES)
+  list(APPEND NAMES ${NAME})
+
+  find_program(${VAR} NAMES ${NAMES} ${OPTS})
+  if(NOT ${VAR})
+    message(WARNING "clang tool ${NAME} (${VAR}) not detected, skipping")
+    unset(${VAR})
+    return()
+  endif()
+
+  execute_process(
+    COMMAND ${${VAR}} "--version" OUTPUT_VARIABLE _CLANG_TOOL_VERSION RESULT_VARIABLE _CLANG_TOOL_VERSION_FAILED
+  )
+
+  if(_CLANG_TOOL_VERSION_FAILED)
+    message(WARNING "A problem was encountered with ${${VAR}}")
+    message(WARNING "${_CLANG_TOOL_VERSION_FAILED}")
+    unset(${VAR})
+    return()
+  endif()
+
+  string(REGEX MATCH "([7-9]|[1-9][0-9])\\.[0-9]\\.[0-9]" CLANG_TOOL_VERSION "${_CLANG_TOOL_VERSION}")
+
+  if(NOT CLANG_TOOL_VERSION)
+    message(WARNING "problem parsing ${NAME} version for ${${VAR}}")
+    unset(${VAR})
+    return()
+  endif()
+
+  set(_CLANG_TOOL_MINIMUM_VERSION "12.0.0")
+  if(${CLANG_TOOL_VERSION} VERSION_LESS ${_CLANG_TOOL_MINIMUM_VERSION})
+    message(WARNING "clang-format version ${CLANG_TOOL_VERSION} not supported")
+    message(WARNING "Minimum version required: ${_CLANG_TOOL_MINIMUM_VERSION}")
+    unset(${VAR})
+    return()
+  endif()
+endfunction()