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Add a SYSTEM_DOCTEST CMake option

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This option is off by default, maintaining the previous behavior. When
enabled (along with FASTFLOAT_TEST), it bypasses the FetchContent
machinery for doctest so that a system-wide installation of the doctest
header can be easily used. In this case, the header doctest/doctest.h
should be available on the compiler’s include path.

This option is especially useful for Linux distributions and others that
need to run the tests in fully offline build environments.

Fixes #83.
This commit is contained in:
Benjamin A. Beasley 2021-06-21 11:20:01 -04:00
parent bfda5881ab
commit fe8e477e14
1 changed files with 18 additions and 9 deletions
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27
tests/CMakeLists.txt
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@ -4,9 +4,13 @@ cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
include(FetchContent)
FetchContent_Declare(doctest
GIT_REPOSITORY https://github.com/onqtam/doctest.git
GIT_TAG 2.4.6)
option(SYSTEM_DOCTEST "Use system copy of doctest" OFF)
if (NOT SYSTEM_DOCTEST)
FetchContent_Declare(doctest
GIT_REPOSITORY https://github.com/onqtam/doctest.git
GIT_TAG 2.4.6)
endif()
FetchContent_Declare(supplemental_test_files
GIT_REPOSITORY https://github.com/fastfloat/supplemental_test_files.git
GIT_TAG origin/main)
@ -16,10 +20,12 @@ FetchContent_Declare(supplemental_test_files
# FetchContent_MakeAvailable() was only introduced in 3.14
# https://cmake.org/cmake/help/v3.14/release/3.14.html#modules
# FetchContent_MakeAvailable(doctest)
FetchContent_GetProperties(doctest)
if(NOT doctest_POPULATED)
FetchContent_Populate(doctest)
add_subdirectory(${doctest_SOURCE_DIR} ${doctest_BINARY_DIR})
if (NOT SYSTEM_DOCTEST)
FetchContent_GetProperties(doctest)
if(NOT doctest_POPULATED)
FetchContent_Populate(doctest)
add_subdirectory(${doctest_SOURCE_DIR} ${doctest_BINARY_DIR})
endif()
endif()
FetchContent_GetProperties(supplemental_test_files)
if(NOT supplemental_test_files_POPULATED)
@ -40,7 +46,10 @@ function(fast_float_add_cpp_test TEST_NAME)
target_compile_options(${TEST_NAME} PUBLIC -Werror -Wall -Wextra -Weffc++)
target_compile_options(${TEST_NAME} PUBLIC -Wsign-compare -Wshadow -Wwrite-strings -Wpointer-arith -Winit-self -Wconversion -Wsign-conversion)
endif()
target_link_libraries(${TEST_NAME} PUBLIC fast_float doctest supplemental-data)
target_link_libraries(${TEST_NAME} PUBLIC fast_float supplemental-data)
if (NOT SYSTEM_DOCTEST)
target_link_libraries(${TEST_NAME} PUBLIC doctest)
endif()
endfunction(fast_float_add_cpp_test)
@ -65,4 +74,4 @@ if (FASTFLOAT_EXHAUSTIVE)
fast_float_add_cpp_test(random64)
endif(FASTFLOAT_EXHAUSTIVE)
add_subdirectory(build_tests)
add_subdirectory(build_tests)