--- tests/CMakeLists.txt.orig	2021-09-09 05:45:47 UTC
+++ tests/CMakeLists.txt
@@ -3,6 +3,7 @@ find_package (Boost     COMPONENTS      system      RE
 enable_testing ()
 
 # Framework for writing tests.
+if (FALSE)
 ExternalProject_Add (
     googletest
     GIT_REPOSITORY "https://github.com/google/googletest.git"
@@ -23,6 +24,11 @@ set (GTEST_BOTH_LIBRARIES ${GTEST_LIBRARIES} ${GTEST_M
 
 include_directories (${GTEST_INCLUDE_DIRS})
 
+endif()
+
+find_package(GTest REQUIRED)
+
+
 # Special flags fo generating code coverage.
 set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage")
 set (CMAKE_SHARED_LINKER_FLAGS "-fprofile-arcs -ftest-coverage")
@@ -52,7 +58,7 @@ set (
     ${PROJECT_SOURCE_DIR}/tests/adapters/boost_matrixtest.cpp
 )
 add_executable (munkrestest EXCLUDE_FROM_ALL ${MunkresCppLib_SOURCES} ${MunkresCppTest_SOURCES})
-target_link_libraries (munkrestest ${GTEST_BOTH_LIBRARIES} gcov pthread)
+target_link_libraries (munkrestest ${GTest} gcov pthread)
 add_custom_target (tests)
 add_dependencies  (tests munkrestest)
 add_dependencies  (munkrestest googletest)