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diff --git a/CMakeLists.txt b/CMakeLists.txt
index a2db3db..a10a942 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -100,13 +100,11 @@ FetchContent_Declare(
set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
-if(NOT TARGET Eigen3::Eigen)
- FetchContent_GetProperties(eigen)
- if(NOT eigen_POPULATED)
- FetchContent_Populate(eigen)
- set( BUILD_TESTING OFF )
- add_subdirectory(${eigen_SOURCE_DIR} ${eigen_BINARY_DIR} EXCLUDE_FROM_ALL)
- endif()
+find_package(Eigen3 3.4.0 REQUIRED)
+
+if(Eigen3_FOUND)
+ set( BUILD_TESTING OFF )
+ include_directories(${EIGEN3_INCLUDE_DIR})
if(NOT TARGET Eigen3::Eigen)
add_library(Eigen3::Eigen ALIAS eigen)
endif()
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