diff --git a/MyxCMake/find/FindMPFRCppThirdparty.cmake b/MyxCMake/find/FindMPFRCppThirdparty.cmake
index 1797d17..8c7a9f1 100644
--- a/MyxCMake/find/FindMPFRCppThirdparty.cmake
+++ b/MyxCMake/find/FindMPFRCppThirdparty.cmake
@@ -1,7 +1,7 @@
 # Подключение внешних проектов
 include(ExternalProject)
 
-if(MPFR_FOUND)
+if(MPFR_FOUND AND IS_DIRECTORY ${CMAKE_SOURCE_DIR}/thirdparty/mpreal)
   ExternalProject_Add(
     mpfrcpp
     SOURCE_DIR ${CMAKE_SOURCE_DIR}/thirdparty/mpreal
@@ -9,7 +9,8 @@ if(MPFR_FOUND)
     CONFIGURE_COMMAND true
     BUILD_COMMAND true
     INSTALL_COMMAND ${CMAKE_COMMAND} -E copy <SOURCE_DIR>/mpreal.h <INSTALL_DIR>)
+
+  set(MPFRCPP_PREFIX  ${CMAKE_BINARY_DIR} CACHE FILEPATH "" FORCE)
+  set(MPFRCPP_INCLUDE_DIRS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH "" FORCE)
 endif()
 
-set(MPFRCPP_PREFIX  ${CMAKE_BINARY_DIR} CACHE FILEPATH "" FORCE)
-set(MPFRCPP_INCLUDE_DIRS ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_INCLUDEDIR} CACHE PATH "" FORCE)
diff --git a/MyxCMake/functions/MyxCMakeHighPrecisionMath.cmake b/MyxCMake/functions/MyxCMakeHighPrecisionMath.cmake
index 0480251..9b7a0a6 100644
--- a/MyxCMake/functions/MyxCMakeHighPrecisionMath.cmake
+++ b/MyxCMake/functions/MyxCMakeHighPrecisionMath.cmake
@@ -1,11 +1,13 @@
-find_package(Quadmath)
-if(QUADMATH_FOUND)
-  add_definitions(-DHAVE_QUADMATH=1)
-else()
-  find_package(MPFR)
-  if(MPFR_FOUND)
-    find_package(MPFRCppThirdparty)
+function myx_cmake_enable_high_precision_math()
+  find_package(Quadmath)
+  if(QUADMATH_FOUND)
+    add_definitions(-DHAVE_QUADMATH=1)
   else()
-    message(FATAL_ERROR "Nor Quadmath, nor MPFR found.")
+    find_package(MPFR)
+    if(MPFR_FOUND)
+      find_package(MPFRCppThirdparty)
+    else()
+      message(FATAL_ERROR "Nor Quadmath, nor MPFR found.")
+    endif()
   endif()
-endif()
+endfunction()