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Change cmake to build googletest from source #3319

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28 changes: 28 additions & 0 deletions tests/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,34 @@ if(FAISS_OPT_LEVEL STREQUAL "avx512")
target_link_libraries(faiss_test PRIVATE faiss_avx512)
endif()

include(FetchContent)
FetchContent_Declare(
googletest
GIT_REPOSITORY https://github.com/google/googletest.git
GIT_TAG 58d77fa8070e8cec2dc1ed015d66b454c8d78850 # release-1.12.1
OVERRIDE_FIND_PACKAGE)
set(BUILD_GMOCK CACHE BOOL OFF)
set(INSTALL_GTEST CACHE BOOL OFF)
FetchContent_MakeAvailable(googletest)

if(NOT EXISTS ${CMAKE_FIND_PACKAGE_REDIRECTS_DIR}/gtest-config.cmake
AND NOT EXISTS ${CMAKE_FIND_PACKAGE_REDIRECTS_DIR}/GTestConfig.cmake)
file(
WRITE ${CMAKE_FIND_PACKAGE_REDIRECTS_DIR}/gtest-config.cmake
[=[
include(CMakeFindDependencyMacro)
find_dependency(googletest)
if(NOT TARGET GTest::GTest)
add_library(GTest::GTest INTERFACE IMPORTED)
target_link_libraries(GTest::GTest INTERFACE GTest::gtest)
endif()
if(NOT TARGET GTest::Main)
add_library(GTest::Main INTERFACE IMPORTED)
target_link_libraries(GTest::Main INTERFACE GTest::gtest_main)
endif()
]=])
endif()

find_package(OpenMP REQUIRED)
find_package(GTest CONFIG REQUIRED)

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