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# Use FetchContent to obtain Catch2.
include(FetchContent)
function(fetch_catch2)
set(fetch_args "")
if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.25.0")
set(fetch_args "SYSTEM")
endif()
FetchContent_Declare(
EP_Catch2
GIT_REPOSITORY https://github.com/catchorg/Catch2
GIT_TAG v3.7.0
GIT_SHALLOW TRUE
LOG_DOWNLOAD ON
${fetch_args}
FETCHCONTENT_UPDATES_DISCONNECTED ON
)
FetchContent_GetProperties(EP_Catch2)
if(NOT ep_catch2_POPULATED)
message(STATUS "Downloading Catch2...")
# Avoid Catch2 compile warnings from being treated as errors.
string(REPLACE " -Werror" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
string(REPLACE " -Werror" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
# Ensure consistent default calling convention with test executables.
if(MSVC)
string(APPEND CMAKE_CXX_FLAGS " /Gv")
endif()
FetchContent_MakeAvailable(EP_Catch2)
# Avoid building unnecessary targets. Use FetchContent_Declare(EXCLUDE_FROM_ALL) in CMake 3.28 and newer.
set_property(DIRECTORY "${ep_catch2_SOURCE_DIR}" PROPERTY EXCLUDE_FROM_ALL ON)
# Catch2 config vars.
set_property(CACHE CATCH_INSTALL_DOCS PROPERTY VALUE OFF)
set_property(CACHE CATCH_INSTALL_EXTRAS PROPERTY VALUE OFF)
message (STATUS "Downloading Catch2... done.")
endif()
endfunction()
fetch_catch2()
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