--- runtime/CMakeLists.txt.orig	2020-10-10 06:11:48 UTC
+++ runtime/CMakeLists.txt
@@ -1,19 +1,9 @@
 
 include(${CMAKE_ROOT}/Modules/ExternalProject.cmake)
 
-set(THIRDPARTY_DIR ${CMAKE_BINARY_DIR}/runtime/thirdparty)
+set(THIRDPARTY_DIR ${PROJECT_SOURCE_DIR}/runtime/thirdparty)
 set(UTFCPP_DIR ${THIRDPARTY_DIR}/utfcpp)
-ExternalProject_Add(
-  utfcpp
-  GIT_REPOSITORY        "git://github.com/nemtrif/utfcpp"
-  GIT_TAG               "v3.1.1"
-  SOURCE_DIR            ${UTFCPP_DIR}
-  UPDATE_DISCONNECTED   1
-  CMAKE_ARGS            -DCMAKE_INSTALL_PREFIX=${UTFCPP_DIR}/install -Dgtest_force_shared_crt=ON
-  TEST_AFTER_INSTALL    1
-  STEP_TARGETS          build)
 
-
 include_directories(
   ${PROJECT_SOURCE_DIR}/runtime/src
   ${PROJECT_SOURCE_DIR}/runtime/src/atn
@@ -23,8 +13,8 @@ include_directories(
   ${PROJECT_SOURCE_DIR}/runtime/src/tree
   ${PROJECT_SOURCE_DIR}/runtime/src/tree/pattern
   ${PROJECT_SOURCE_DIR}/runtime/src/tree/xpath
-  ${UTFCPP_DIR}/install/include/utf8cpp
-  ${UTFCPP_DIR}/install/include/utf8cpp/utf8
+  ${UTFCPP_DIR}/source/
+  ${UTFCPP_DIR}/source/utf8
 )