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move download and extract code into function

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This commit is contained in:
Axel Kohlmeyer
2021-10-21 17:30:54 -04:00
parent d8db9dd3ac
commit 6e3fcce9e1
3 changed files with 40 additions and 57 deletions
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20
unittest/CMakeLists.txt
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@ -11,24 +11,8 @@ mark_as_advanced(GTEST_URL)
mark_as_advanced(GTEST_MD5)
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
# workaround for older CMake versions (tested on Ubuntu 18.04 with CMake 3.10)
if(CMAKE_VERSION VERSION_LESS 3.14)
file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/_deps)
file(DOWNLOAD ${GTEST_URL} ${CMAKE_BINARY_DIR}/_deps/googletest.tar.gz EXPECTED_HASH MD5=${GTEST_MD5})
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xzf ${CMAKE_BINARY_DIR}/_deps/googletest.tar.gz
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/_deps)
file(GLOB GTEST_SOURCE "${CMAKE_BINARY_DIR}/_deps/googletest-*")
# sanity check. do not allow to have multiple downloaded and extracted versions of the source
list(LENGTH GTEST_SOURCE _num)
if(_num GREATER 1)
message(FATAL_ERROR "Inconsistent googletest sources. Please delete ${CMAKE_BINARY_DIR}/_deps and re-run cmake")
endif()
add_subdirectory(${GTEST_SOURCE} ${CMAKE_BINARY_DIR}/googletest)
else()
include(FetchContent)
FetchContent_Declare(googletest URL ${GTEST_URL} URL_HASH MD5=${GTEST_MD5})
FetchContent_MakeAvailable(googletest)
endif()
include(ExternalCMakeProject)
ExternalCMakeProject(googletest ${GTEST_URL} ${GTEST_MD5} googletest .)
########################################
# General tests using the LAMMPS executable itself