diff --git a/clang/cmake/caches/Release.cmake b/clang/cmake/caches/Release.cmake
index 25f7970119d07..45343c66dfb7f 100644
--- a/clang/cmake/caches/Release.cmake
+++ b/clang/cmake/caches/Release.cmake
@@ -171,6 +171,7 @@ set_final_stage_var(CPACK_GENERATOR "TXZ" STRING)
 set_final_stage_var(CPACK_ARCHIVE_THREADS "0" STRING)
 
 set_final_stage_var(LLVM_USE_STATIC_ZSTD "ON" BOOL)
+set_final_stage_var(LLVM_USE_STATIC_LIBXML2 "ON" BOOL)
 if (LLVM_RELEASE_ENABLE_LTO)
   set_final_stage_var(LLVM_ENABLE_FATLTO "ON" BOOL)
   set_final_stage_var(CPACK_PRE_BUILD_SCRIPTS "${CMAKE_CURRENT_LIST_DIR}/release_cpack_pre_build_strip_lto.cmake" STRING)
diff --git a/lldb/source/Host/CMakeLists.txt b/lldb/source/Host/CMakeLists.txt
index c9e8afe48fcde..f3f59fde35784 100644
--- a/lldb/source/Host/CMakeLists.txt
+++ b/lldb/source/Host/CMakeLists.txt
@@ -152,7 +152,7 @@ set(EXTRA_LIBS)
 if (CMAKE_SYSTEM_NAME MATCHES "NetBSD")
   list(APPEND EXTRA_LIBS kvm)
 endif()
-if (LLDB_ENABLE_LIBXML2)
+if (LLDB_ENABLE_LIBXML2 AND NOT LLVM_USE_STATIC_LIBXML2)
   list(APPEND EXTRA_LIBS LibXml2::LibXml2)
 endif()
 if (HAVE_LIBDL)
@@ -190,3 +190,8 @@ add_lldb_library(lldbHost NO_PLUGIN_DEPENDENCIES
     ${LLDB_LIBEDIT_LIBS}
   )
 
+if (LLDB_ENABLE_LIBXML2 AND LLVM_USE_STATIC_LIBXML2)
+  target_link_libraries(lldbHost PRIVATE ${LIBXML2_LIBRARIES})
+  target_include_directories(lldbHost PUBLIC ${LIBXML2_INCLUDE_DIRS})
+  add_dependencies(lldbHost libxml2)
+endif()
diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
index f192cd05b5a34..45ed2ca0e92d0 100644
--- a/llvm/CMakeLists.txt
+++ b/llvm/CMakeLists.txt
@@ -605,6 +605,8 @@ set(LLVM_TARGET_ARCH "host"
 
 set(LLVM_ENABLE_LIBXML2 "ON" CACHE STRING "Use libxml2 if available. Can be ON, OFF, or FORCE_ON")
 
+set(LLVM_USE_STATIC_LIBXML2 "OFF" CACHE BOOL "Use static version of libxml2. Can be ON, or OFF")
+
 option(LLVM_ENABLE_LIBEDIT "Use libedit if available." ON)
 
 option(LLVM_ENABLE_LIBPFM "Use libpfm for performance counters if available." ON)
diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index ed2bfa6df68f4..d374226214fe7 100644
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -210,22 +210,31 @@ if(LLVM_ENABLE_ZSTD)
 endif()
 
 if(LLVM_ENABLE_LIBXML2)
-  if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON)
-    find_package(LibXml2 REQUIRED)
-  elseif(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
-    find_package(LibXml2)
+  if(APPLE)
+    set(LLVM_USE_STATIC_LIBXML2 OFF)
   endif()
-  if(LibXml2_FOUND)
-    # Check if libxml2 we found is usable; for example, we may have found a 32-bit
-    # library on a 64-bit system which would result in a link-time failure.
-    cmake_push_check_state()
-    list(APPEND CMAKE_REQUIRED_INCLUDES ${LIBXML2_INCLUDE_DIRS})
-    list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBXML2_LIBRARIES})
-    list(APPEND CMAKE_REQUIRED_DEFINITIONS ${LIBXML2_DEFINITIONS})
-    check_symbol_exists(xmlReadMemory libxml/xmlreader.h HAVE_LIBXML2)
-    cmake_pop_check_state()
-    if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON AND NOT HAVE_LIBXML2)
-      message(FATAL_ERROR "Failed to configure libxml2")
+
+  if(LLVM_USE_STATIC_LIBXML2)
+    include(LibXml2)
+    set(HAVE_LIBXML2 1)
+  else()
+    if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON)
+      find_package(LibXml2 REQUIRED)
+    elseif(NOT LLVM_USE_SANITIZER MATCHES "Memory.*")
+      find_package(LibXml2)
+    endif()
+    if(LibXml2_FOUND)
+      # Check if libxml2 we found is usable; for example, we may have found a 32-bit
+      # library on a 64-bit system which would result in a link-time failure.
+      cmake_push_check_state()
+      list(APPEND CMAKE_REQUIRED_INCLUDES ${LIBXML2_INCLUDE_DIRS})
+      list(APPEND CMAKE_REQUIRED_LIBRARIES ${LIBXML2_LIBRARIES})
+      list(APPEND CMAKE_REQUIRED_DEFINITIONS ${LIBXML2_DEFINITIONS})
+      check_symbol_exists(xmlReadMemory libxml/xmlreader.h HAVE_LIBXML2)
+      cmake_pop_check_state()
+      if(LLVM_ENABLE_LIBXML2 STREQUAL FORCE_ON AND NOT HAVE_LIBXML2)
+        message(FATAL_ERROR "Failed to configure libxml2")
+      endif()
     endif()
   endif()
   set(LLVM_ENABLE_LIBXML2 "${HAVE_LIBXML2}")
diff --git a/llvm/cmake/modules/LibXml2.cmake b/llvm/cmake/modules/LibXml2.cmake
new file mode 100644
index 0000000000000..151cb8cfe7985
--- /dev/null
+++ b/llvm/cmake/modules/LibXml2.cmake
@@ -0,0 +1,31 @@
+include(ExternalProject)
+
+if (NOT LIBXML2_PREFIX)
+  set (LIBXML2_PREFIX libxml2)
+endif()
+
+set(LIBXML2_PATH ${CMAKE_CURRENT_BINARY_DIR}/${LIBXML2_PREFIX}/src/${LIBXML2_PREFIX})
+set(LIBXML2_LIB_PATH ${LIBXML2_PATH}-build/libxml2.a)
+
+ExternalProject_Add(${LIBXML2_PREFIX}
+  PREFIX ${LIBXML2_PREFIX}
+  GIT_REPOSITORY https://github.com/GNOME/libxml2.git
+  GIT_TAG v2.15.1
+  CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+             -DBUILD_SHARED_LIBS=OFF
+             -DLIBXML2_WITH_PYTHON=OFF
+             -DLIBXML2_WITH_PROGRAMS=OFF
+             -DLIBXML2_WITH_TESTS=OFF
+             -DLIBXML2_WITH_LZMA=OFF
+             -DLIBXML2_WITH_ZLIB=OFF
+  CMAKE_CACHE_ARGS -DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
+                   -DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
+                   -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
+  BUILD_BYPRODUCTS ${LIBXML2_LIB_PATH}
+  UPDATE_COMMAND ""
+  INSTALL_COMMAND ""
+  )
+
+set(LIBXML2_INCLUDE_DIRS ${LIBXML2_PATH}/include ${LIBXML2_PATH}-build)
+set(LIBXML2_LIBRARIES ${LIBXML2_LIB_PATH})
+set(LIBXML2_DEFINITIONS "")
diff --git a/llvm/lib/WindowsManifest/CMakeLists.txt b/llvm/lib/WindowsManifest/CMakeLists.txt
index 910132a4c7dec..0eef3a52ec1a3 100644
--- a/llvm/lib/WindowsManifest/CMakeLists.txt
+++ b/llvm/lib/WindowsManifest/CMakeLists.txt
@@ -1,6 +1,6 @@
 include(GetLibraryName)
 
-if(LLVM_ENABLE_LIBXML2)
+if(LLVM_ENABLE_LIBXML2 AND NOT LLVM_USE_STATIC_LIBXML2)
   set(imported_libs LibXml2::LibXml2)
 endif()
 
@@ -18,17 +18,28 @@ add_llvm_component_library(LLVMWindowsManifest
   Support
   )
 
+if(LLVM_ENABLE_LIBXML2 AND LLVM_USE_STATIC_LIBXML2)
+  target_link_libraries(LLVMWindowsManifest PRIVATE ${LIBXML2_LIBRARIES})
+  target_include_directories(LLVMWindowsManifest PRIVATE ${LIBXML2_INCLUDE_DIRS})
+  add_dependencies(LLVMWindowsManifest libxml2)
+endif()
+
 # This block is only needed for llvm-config. When we deprecate llvm-config and
 # move to using CMake export, this block can be removed.
 if(LLVM_ENABLE_LIBXML2)
-  # CMAKE_BUILD_TYPE is only meaningful to single-configuration generators.
-  if(CMAKE_BUILD_TYPE)
-    string(TOUPPER ${CMAKE_BUILD_TYPE} build_type)
-    get_property(libxml2_library TARGET LibXml2::LibXml2 PROPERTY LOCATION_${build_type})
-  endif()
-  if(NOT libxml2_library)
-    get_property(libxml2_library TARGET LibXml2::LibXml2 PROPERTY LOCATION)
+  if(LLVM_USE_STATIC_LIBXML2)
+    # When using static libxml2 built via ExternalProject, use the library path directly
+    get_library_name(${LIBXML2_LIBRARIES} libxml2_library)
+  else()
+    # CMAKE_BUILD_TYPE is only meaningful to single-configuration generators.
+    if(CMAKE_BUILD_TYPE)
+      string(TOUPPER ${CMAKE_BUILD_TYPE} build_type)
+      get_property(libxml2_library TARGET LibXml2::LibXml2 PROPERTY LOCATION_${build_type})
+    endif()
+    if(NOT libxml2_library)
+      get_property(libxml2_library TARGET LibXml2::LibXml2 PROPERTY LOCATION)
+    endif()
+    get_library_name(${libxml2_library} libxml2_library)
   endif()
-  get_library_name(${libxml2_library} libxml2_library)
   set_property(TARGET LLVMWindowsManifest PROPERTY LLVM_SYSTEM_LIBS ${libxml2_library})
 endif()