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author | Vollstrecker <github@vollstreckernet.de> | 2021-03-13 16:58:42 +0100 |
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committer | GitHub <noreply@github.com> | 2021-03-13 16:58:42 +0100 |
commit | 5065389aabfa1d70a49d57eb355b9db4500801be (patch) | |
tree | b1075d3ddc9370cdea8e4c16a4f8fe48000c224c | |
parent | e8512bc38c4c0060858c3306b0660a3f126aee30 (diff) | |
download | googletest-5065389aabfa1d70a49d57eb355b9db4500801be.tar.gz googletest-5065389aabfa1d70a49d57eb355b9db4500801be.zip |
Use Fetchcontent instead of ExternalProject
Hi,
instead of ExternalProject and a new file that is spawned in a new process, it's easier to just use FetchContent. cmake 3.14 should be old enough to be spread.
-rw-r--r-- | googletest/README.md | 62 |
1 files changed, 10 insertions, 52 deletions
diff --git a/googletest/README.md b/googletest/README.md index 717c8867..33604bd8 100644 --- a/googletest/README.md +++ b/googletest/README.md @@ -85,58 +85,18 @@ main build can be done a few different ways: is just a little more complex, but doesn't have the limitations of the other methods. -The last of the above methods is implemented with a small piece of CMake code in -a separate file (e.g. `CMakeLists.txt.in`) which is copied to the build area and -then invoked as a sub-build _during the CMake stage_. That directory is then -pulled into the main build with `add_subdirectory()`. For example: +The last of the above methods is implemented with a small piece of CMake code so +the code is pulled into the main build. -New file `CMakeLists.txt.in`: +Just add to your `CMakeLists.txt`: ```cmake -cmake_minimum_required(VERSION 2.8.12) - -project(googletest-download NONE) - -include(ExternalProject) -ExternalProject_Add(googletest - GIT_REPOSITORY https://github.com/google/googletest.git - GIT_TAG master - SOURCE_DIR "${CMAKE_CURRENT_BINARY_DIR}/googletest-src" - BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/googletest-build" - CONFIGURE_COMMAND "" - BUILD_COMMAND "" - INSTALL_COMMAND "" - TEST_COMMAND "" +include (FetchContent) +FetchContent_Declare( + googletest + GIT_REPOSITORY https://github.com/google/googletest.git ) -``` - -Existing build's `CMakeLists.txt`: - -```cmake -# Download and unpack googletest at configure time -configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt) -execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" . - RESULT_VARIABLE result - WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download ) -if(result) - message(FATAL_ERROR "CMake step for googletest failed: ${result}") -endif() -execute_process(COMMAND ${CMAKE_COMMAND} --build . - RESULT_VARIABLE result - WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download ) -if(result) - message(FATAL_ERROR "Build step for googletest failed: ${result}") -endif() - -# Prevent overriding the parent project's compiler/linker -# settings on Windows -set(gtest_force_shared_crt ON CACHE BOOL "" FORCE) - -# Add googletest directly to our build. This defines -# the gtest and gtest_main targets. -add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest-src - ${CMAKE_CURRENT_BINARY_DIR}/googletest-build - EXCLUDE_FROM_ALL) +FetchContent_MakeAvailable(googletest) # Now simply link against gtest or gtest_main as needed. Eg add_executable(example example.cpp) @@ -144,10 +104,8 @@ target_link_libraries(example gtest_main) add_test(NAME example_test COMMAND example) ``` -Note that this approach requires CMake 2.8.2 or later due to its use of the -`ExternalProject_Add()` command. The above technique is discussed in more detail -in [this separate article](http://crascit.com/2015/07/25/cmake-gtest/) which -also contains a link to a fully generalized implementation of the technique. +Note that this approach requires CMake 3.14 or later due to its use of the +`FetchContent_MakeAvailable()` command. ##### Visual Studio Dynamic vs Static Runtimes |