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76 lines
2.4 KiB
76 lines
2.4 KiB
# - Find the Catch test framework or download it (single header) |
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# |
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# This is a quick module for internal use. It assumes that Catch is |
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# REQUIRED and that a minimum version is provided (not EXACT). If |
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# a suitable version isn't found locally, the single header file |
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# will be downloaded and placed in the build dir: PROJECT_BINARY_DIR. |
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# |
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# This code sets the following variables: |
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# CATCH_INCLUDE_DIR - path to catch.hpp |
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# CATCH_VERSION - version number |
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option(DOWNLOAD_CATCH "Download catch2 if not found") |
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if(NOT Catch_FIND_VERSION) |
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message(FATAL_ERROR "A version number must be specified.") |
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elseif(Catch_FIND_REQUIRED) |
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message(FATAL_ERROR "This module assumes Catch is not required.") |
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elseif(Catch_FIND_VERSION_EXACT) |
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message(FATAL_ERROR "Exact version numbers are not supported, only minimum.") |
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endif() |
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# Extract the version number from catch.hpp |
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function(_get_catch_version) |
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file( |
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STRINGS "${CATCH_INCLUDE_DIR}/catch.hpp" version_line |
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REGEX "Catch v.*" |
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LIMIT_COUNT 1) |
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if(version_line MATCHES "Catch v([0-9]+)\\.([0-9]+)\\.([0-9]+)") |
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set(CATCH_VERSION |
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"${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}" |
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PARENT_SCOPE) |
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endif() |
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endfunction() |
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# Download the single-header version of Catch |
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function(_download_catch version destination_dir) |
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message(STATUS "Downloading catch v${version}...") |
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set(url https://github.com/philsquared/Catch/releases/download/v${version}/catch.hpp) |
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file( |
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DOWNLOAD ${url} "${destination_dir}/catch.hpp" |
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STATUS status |
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LOG log) |
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list(GET status 0 error) |
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if(error) |
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string(REPLACE "\n" "\n " log " ${log}") |
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message(FATAL_ERROR "Could not download URL:\n" " ${url}\n" "Log:\n" "${log}") |
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endif() |
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set(CATCH_INCLUDE_DIR |
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"${destination_dir}" |
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CACHE INTERNAL "") |
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endfunction() |
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# Look for catch locally |
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find_path( |
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CATCH_INCLUDE_DIR |
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NAMES catch.hpp |
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PATH_SUFFIXES catch2) |
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if(CATCH_INCLUDE_DIR) |
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_get_catch_version() |
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endif() |
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# Download the header if it wasn't found or if it's outdated |
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if(NOT CATCH_VERSION OR CATCH_VERSION VERSION_LESS ${Catch_FIND_VERSION}) |
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if(DOWNLOAD_CATCH) |
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_download_catch(${Catch_FIND_VERSION} "${PROJECT_BINARY_DIR}/catch/") |
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_get_catch_version() |
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else() |
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set(CATCH_FOUND FALSE) |
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return() |
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endif() |
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endif() |
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add_library(Catch2::Catch2 IMPORTED INTERFACE) |
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set_property(TARGET Catch2::Catch2 PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${CATCH_INCLUDE_DIR}") |
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set(CATCH_FOUND TRUE)
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