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2025-05-12 15:14:57 +00:00
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build
.cache

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.pre-commit-config.yaml Normal file
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repos:
- repo: https://github.com/pre-commit/mirrors-clang-format
rev: 6d365699efc33b1b432eab5b4ae331a19e1857de # frozen: v18.1.2
hooks:
- id: clang-format
exclude: ".*third_party/.*"
- repo: https://github.com/cheshirekow/cmake-format-precommit
rev: e2c2116d86a80e72e7146a06e68b7c228afc6319 # frozen: v0.6.13
hooks:
- id: cmake-format

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cmake_minimum_required(VERSION 3.5)
project(
project-name
VERSION 0.0.0
DESCRIPTION ""
HOMEPAGE_URL ""
LANGUAGES C CXX)
set(CMAKE_CXX_STANDARD 20)
set(DEFAULT_BUILD_TYPE "Release")
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(
STATUS
"Setting build type to '${DEFAULT_BUILD_TYPE}' as none was specified.")
set(CMAKE_BUILD_TYPE
"${DEFAULT_BUILD_TYPE}"
CACHE STRING "Choose the type of build." FORCE)
# Set the possible values of build type for cmake-gui
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
"MinSizeRel" "RelWithDebInfo")
endif()
add_compile_options(-Werror=switch-enum -Wswitch-enum -Wunused-variable -fPIC
-fdata-sections -ffunction-sections)
add_subdirectory(third_party)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")
include(CTest)
include(doctest)
add_executable(bench src/bench.cpp)
target_link_libraries(bench PRIVATE nanobench)
add_executable(mytest src/test.cpp)
target_link_libraries(mytest PRIVATE doctest)
doctest_discover_tests(mytest)

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Template for shared library implemented in c++
# Features
- unit tests
- fuzz targets
- benchmarks
- CI
- (x64,arm64) * (linux,macos) support
- no libstdc++ dependency
- python bindings

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
doctest
-----
This module defines a function to help use the doctest test framework.
The :command:`doctest_discover_tests` discovers tests by asking the compiled test
executable to enumerate its tests. This does not require CMake to be re-run
when tests change. However, it may not work in a cross-compiling environment,
and setting test properties is less convenient.
This command is intended to replace use of :command:`add_test` to register
tests, and will create a separate CTest test for each doctest test case. Note
that this is in some cases less efficient, as common set-up and tear-down logic
cannot be shared by multiple test cases executing in the same instance.
However, it provides more fine-grained pass/fail information to CTest, which is
usually considered as more beneficial. By default, the CTest test name is the
same as the doctest name; see also ``TEST_PREFIX`` and ``TEST_SUFFIX``.
.. command:: doctest_discover_tests
Automatically add tests with CTest by querying the compiled test executable
for available tests::
doctest_discover_tests(target
[TEST_SPEC arg1...]
[EXTRA_ARGS arg1...]
[WORKING_DIRECTORY dir]
[TEST_PREFIX prefix]
[TEST_SUFFIX suffix]
[PROPERTIES name1 value1...]
[ADD_LABELS value]
[TEST_LIST var]
[JUNIT_OUTPUT_DIR dir]
)
``doctest_discover_tests`` sets up a post-build command on the test executable
that generates the list of tests by parsing the output from running the test
with the ``--list-test-cases`` argument. This ensures that the full
list of tests is obtained. Since test discovery occurs at build time, it is
not necessary to re-run CMake when the list of tests changes.
However, it requires that :prop_tgt:`CROSSCOMPILING_EMULATOR` is properly set
in order to function in a cross-compiling environment.
Additionally, setting properties on tests is somewhat less convenient, since
the tests are not available at CMake time. Additional test properties may be
assigned to the set of tests as a whole using the ``PROPERTIES`` option. If
more fine-grained test control is needed, custom content may be provided
through an external CTest script using the :prop_dir:`TEST_INCLUDE_FILES`
directory property. The set of discovered tests is made accessible to such a
script via the ``<target>_TESTS`` variable.
The options are:
``target``
Specifies the doctest executable, which must be a known CMake executable
target. CMake will substitute the location of the built executable when
running the test.
``TEST_SPEC arg1...``
Specifies test cases, wildcarded test cases, tags and tag expressions to
pass to the doctest executable with the ``--list-test-cases`` argument.
``EXTRA_ARGS arg1...``
Any extra arguments to pass on the command line to each test case.
``WORKING_DIRECTORY dir``
Specifies the directory in which to run the discovered test cases. If this
option is not provided, the current binary directory is used.
``TEST_PREFIX prefix``
Specifies a ``prefix`` to be prepended to the name of each discovered test
case. This can be useful when the same test executable is being used in
multiple calls to ``doctest_discover_tests()`` but with different
``TEST_SPEC`` or ``EXTRA_ARGS``.
``TEST_SUFFIX suffix``
Similar to ``TEST_PREFIX`` except the ``suffix`` is appended to the name of
every discovered test case. Both ``TEST_PREFIX`` and ``TEST_SUFFIX`` may
be specified.
``PROPERTIES name1 value1...``
Specifies additional properties to be set on all tests discovered by this
invocation of ``doctest_discover_tests``.
``ADD_LABELS value``
Specifies if the test labels should be set automatically.
``TEST_LIST var``
Make the list of tests available in the variable ``var``, rather than the
default ``<target>_TESTS``. This can be useful when the same test
executable is being used in multiple calls to ``doctest_discover_tests()``.
Note that this variable is only available in CTest.
``JUNIT_OUTPUT_DIR dir``
If specified, the parameter is passed along with ``--reporters=junit``
and ``--out=`` to the test executable. The actual file name is the same
as the test target, including prefix and suffix. This should be used
instead of EXTRA_ARGS to avoid race conditions writing the XML result
output when using parallel test execution.
#]=======================================================================]
# ------------------------------------------------------------------------------
function(doctest_discover_tests TARGET)
cmake_parse_arguments(
"" ""
"TEST_PREFIX;TEST_SUFFIX;WORKING_DIRECTORY;TEST_LIST;JUNIT_OUTPUT_DIR"
"TEST_SPEC;EXTRA_ARGS;PROPERTIES;ADD_LABELS" ${ARGN})
if(NOT _WORKING_DIRECTORY)
set(_WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
endif()
if(NOT _TEST_LIST)
set(_TEST_LIST ${TARGET}_TESTS)
endif()
# Generate a unique name based on the extra arguments
string(SHA1 args_hash "${_TEST_SPEC} ${_EXTRA_ARGS}")
string(SUBSTRING ${args_hash} 0 7 args_hash)
# Define rule to generate test list for aforementioned test executable
set(ctest_include_file
"${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_include-${args_hash}.cmake")
set(ctest_tests_file
"${CMAKE_CURRENT_BINARY_DIR}/${TARGET}_tests-${args_hash}.cmake")
get_property(
crosscompiling_emulator
TARGET ${TARGET}
PROPERTY CROSSCOMPILING_EMULATOR)
add_custom_command(
TARGET ${TARGET}
POST_BUILD
BYPRODUCTS "${ctest_tests_file}"
COMMAND
"${CMAKE_COMMAND}" -D "TEST_TARGET=${TARGET}" -D
"TEST_EXECUTABLE=$<TARGET_FILE:${TARGET}>" -D
"TEST_EXECUTOR=${crosscompiling_emulator}" -D
"TEST_WORKING_DIR=${_WORKING_DIRECTORY}" -D "TEST_SPEC=${_TEST_SPEC}" -D
"TEST_EXTRA_ARGS=${_EXTRA_ARGS}" -D "TEST_PROPERTIES=${_PROPERTIES}" -D
"TEST_ADD_LABELS=${_ADD_LABELS}" -D "TEST_PREFIX=${_TEST_PREFIX}" -D
"TEST_SUFFIX=${_TEST_SUFFIX}" -D "TEST_LIST=${_TEST_LIST}" -D
"TEST_JUNIT_OUTPUT_DIR=${_JUNIT_OUTPUT_DIR}" -D
"CTEST_FILE=${ctest_tests_file}" -P "${_DOCTEST_DISCOVER_TESTS_SCRIPT}"
VERBATIM)
file(
WRITE "${ctest_include_file}"
"if(EXISTS \"${ctest_tests_file}\")\n"
" include(\"${ctest_tests_file}\")\n"
"else()\n"
" add_test(${TARGET}_NOT_BUILT-${args_hash} ${TARGET}_NOT_BUILT-${args_hash})\n"
"endif()\n")
if(NOT CMAKE_VERSION VERSION_LESS 3.10)
# Add discovered tests to directory TEST_INCLUDE_FILES
set_property(
DIRECTORY
APPEND
PROPERTY TEST_INCLUDE_FILES "${ctest_include_file}")
else()
# Add discovered tests as directory TEST_INCLUDE_FILE if possible
get_property(
test_include_file_set
DIRECTORY
PROPERTY TEST_INCLUDE_FILE
SET)
if(NOT ${test_include_file_set})
set_property(DIRECTORY PROPERTY TEST_INCLUDE_FILE "${ctest_include_file}")
else()
message(FATAL_ERROR "Cannot set more than one TEST_INCLUDE_FILE")
endif()
endif()
endfunction()
# ##############################################################################
set(_DOCTEST_DISCOVER_TESTS_SCRIPT
${CMAKE_CURRENT_LIST_DIR}/doctestAddTests.cmake
CACHE INTERNAL "The location of the doctestAddTests script")
mark_as_advanced(_DOCTEST_DISCOVER_TESTS_SCRIPT)

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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
set(prefix "${TEST_PREFIX}")
set(suffix "${TEST_SUFFIX}")
set(spec ${TEST_SPEC})
set(extra_args ${TEST_EXTRA_ARGS})
set(properties ${TEST_PROPERTIES})
set(add_labels ${TEST_ADD_LABELS})
set(junit_output_dir "${TEST_JUNIT_OUTPUT_DIR}")
set(script)
set(suite)
set(tests)
function(add_command NAME)
set(_args "")
foreach(_arg ${ARGN})
if(_arg MATCHES "[^-./:a-zA-Z0-9_]")
set(_args "${_args} [==[${_arg}]==]") # form a bracket_argument
else()
set(_args "${_args} ${_arg}")
endif()
endforeach()
set(script
"${script}${NAME}(${_args})\n"
PARENT_SCOPE)
endfunction()
# Run test executable to get list of available tests
if(NOT EXISTS "${TEST_EXECUTABLE}")
message(
FATAL_ERROR "Specified test executable '${TEST_EXECUTABLE}' does not exist")
endif()
if("${spec}" MATCHES .)
set(spec "--test-case=${spec}")
endif()
execute_process(
COMMAND ${TEST_EXECUTOR} "${TEST_EXECUTABLE}" ${spec} --list-test-cases
OUTPUT_VARIABLE output
RESULT_VARIABLE result
WORKING_DIRECTORY "${TEST_WORKING_DIR}")
if(NOT ${result} EQUAL 0)
message(FATAL_ERROR "Error running test executable '${TEST_EXECUTABLE}':\n"
" Result: ${result}\n" " Output: ${output}\n")
endif()
string(REPLACE "\n" ";" output "${output}")
# Parse output
foreach(line ${output})
if("${line}"
STREQUAL
"==============================================================================="
OR "${line}" MATCHES [==[^\[doctest\] ]==])
continue()
endif()
set(test ${line})
set(labels "")
if(${add_labels})
# get test suite that test belongs to
execute_process(
COMMAND ${TEST_EXECUTOR} "${TEST_EXECUTABLE}" --test-case=${test}
--list-test-suites
OUTPUT_VARIABLE labeloutput
RESULT_VARIABLE labelresult
WORKING_DIRECTORY "${TEST_WORKING_DIR}")
if(NOT ${labelresult} EQUAL 0)
message(
FATAL_ERROR "Error running test executable '${TEST_EXECUTABLE}':\n"
" Result: ${labelresult}\n" " Output: ${labeloutput}\n")
endif()
string(REPLACE "\n" ";" labeloutput "${labeloutput}")
foreach(labelline ${labeloutput})
if("${labelline}"
STREQUAL
"==============================================================================="
OR "${labelline}" MATCHES [==[^\[doctest\] ]==])
continue()
endif()
list(APPEND labels ${labelline})
endforeach()
endif()
if(NOT "${junit_output_dir}" STREQUAL "")
# turn testname into a valid filename by replacing all special characters
# with "-"
string(REGEX REPLACE "[/\\:\"|<>]" "-" test_filename "${test}")
set(TEST_JUNIT_OUTPUT_PARAM
"--reporters=junit"
"--out=${junit_output_dir}/${prefix}${test_filename}${suffix}.xml")
else()
unset(TEST_JUNIT_OUTPUT_PARAM)
endif()
# use escape commas to handle properly test cases with commas inside the name
string(REPLACE "," "\\," test_name ${test})
# ...and add to script
add_command(
add_test
"${prefix}${test}${suffix}"
${TEST_EXECUTOR}
"${TEST_EXECUTABLE}"
"--test-case=${test_name}"
"${TEST_JUNIT_OUTPUT_PARAM}"
${extra_args})
add_command(
set_tests_properties
"${prefix}${test}${suffix}"
PROPERTIES
WORKING_DIRECTORY
"${TEST_WORKING_DIR}"
${properties}
LABELS
${labels})
unset(labels)
list(APPEND tests "${prefix}${test}${suffix}")
endforeach()
# Create a list of all discovered tests, which users may use to e.g. set
# properties on the tests
add_command(set ${TEST_LIST} ${tests})
# Write CTest script
file(WRITE "${CTEST_FILE}" "${script}")

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#include <nanobench.h>
int main() {
ankerl::nanobench::Bench bench;
volatile int64_t x = 0;
bench.run("add", [&]() { x = x + 1; });
}

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#include <doctest.h>
TEST_CASE("add") { CHECK(0 + 1 == 1); }

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# Disable warnings for all third party code
add_compile_options(-w)
add_library(nanobench nanobench.cpp)
target_include_directories(
nanobench PUBLIC SYSTEM ${CMAKE_CURRENT_LIST_DIR}/include/nanobench)
add_library(doctest doctest.cpp)
target_include_directories(
doctest PUBLIC SYSTEM ${CMAKE_CURRENT_LIST_DIR}/include/doctest)

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#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include <doctest.h>

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#define ANKERL_NANOBENCH_IMPLEMENT
#include <nanobench.h>