new file mode 100644

@@ -0,0 +1 @@

+/build

new file mode 100644

@@ -0,0 +1,18 @@

+## CMake

+cmake_minimum_required(VERSION 3.14)

+if(NOT CMAKE_BUILD_TYPE)

+    set(CMAKE_BUILD_TYPE Debug)

+endif()

+

+## Project

+project(glhashnoise

+    VERSION 1.0.0

+    LANGUAGES

+)

+

+## Main target

+add_custom_target(${PROJECT_NAME})

+

+## C++

+include(cxx.cmake)

+cxx()

@@ -7,6 +7,94 @@ A [GLSL][]/[OpenGL][] [\>=2.0][] hash and noise function library.

 [OpenGL]: https://en.wikipedia.org/wiki/OpenGL

 [\>=2.0]: https://en.wikipedia.org/wiki/OpenGL#Version_history

+## Build system

+

+This project has support for [CMake][], and uses [`cmake-cxx`][].

+

+There are several ways to use this project in another CMake-based project:

+

+-   Use [`FetchContent`][] to download it and import the targets automatically

+    as part of the configure step:

+

+    ```cmake

+    include(FetchContent)

+    FetchContent_Declare(project-name

+        GIT_REPOSITORY https://example.com/user/project-name

+    )

+    FetchContent_MakeAvailable(

+        project-name

+    )

+    ```

+

+-   Bundle it and import the targets with [`add_subdirectory`][].

+

+-   Use [`find_package`][] (requires that the project is [packaged](#packaging)

+    or [installed](#installing)).

+

+As usual, use [`add_dependencies`][]/[`target_link_libraries`][] to declare the

+dependency.

+

+[CMake]: https://cmake.org

+[`cmake-cxx`]: https://git.rcrnstn.net/rcrnstn/cmake-cxx

+[`FetchContent`]: https://cmake.org/cmake/help/v3.14/module/FetchContent.html

+[`add_subdirectory`]: https://cmake.org/cmake/help/v3.14/command/add_subdirectory.html

+[`find_package`]: https://cmake.org/cmake/help/v3.14/command/find_package.html

+[`add_dependencies`]: https://cmake.org/cmake/help/v3.14/command/add_dependencies.html

+[`target_link_libraries`]: https://cmake.org/cmake/help/v3.14/command/target_link_libraries.html

+

+### Configure and generate

+

+To configure and generate a build tree, use `cmake`:

+

+```sh

+cmake -B build

+```

+

+To set the [`CMAKE_BUILD_TYPE`][], pass e.g. `-DCMAKE_BUILD_TYPE=Release`.

+

+[`cmake`]: https://cmake.org/cmake/help/v3.14/manual/cmake.1.html#generate-a-project-buildsystem

+[`CMAKE_BUILD_TYPE`]: https://cmake.org/cmake/help/v3.14/variable/CMAKE_BUILD_TYPE.html

+

+### Build

+

+To build, use [`cmake --build`][]:

+

+```sh

+cmake --build build

+```

+

+[`cmake --build`]: https://cmake.org/cmake/help/v3.14/manual/cmake.1.html#build-a-project

+

+### Test

+

+To run tests, use [`ctest`][]:

+

+```sh

+(cd build && ctest --output-on-failure)

+```

+

+[`ctest`]: https://cmake.org/cmake/help/v3.14/manual/ctest.1.html

+

+### Package

+

+To package, use [`cpack`][]:

+

+```sh

+(cd build && cpack)

+```

+

+[`cpack`]: https://cmake.org/cmake/help/v3.14/manual/cpack.1.html

+

+### Install

+

+To install onto the current system, use [`cmake --install`][]:

+

+```sh

+cmake --install build

+```

+

+[`cmake --install`]: https://cmake.org/cmake/help/v3.14/manual/cmake.1.html#install-a-project

+

 ## License

 Licensed under the [ISC License][] unless otherwise noted, see the

new file mode 100644

@@ -0,0 +1,310 @@

+# https://git.rcrnstn.net/rcrnstn/cmake-cxx

+

+function(cxx)

+    ## Arguments

+    set(OPTIONS

+        DISABLE_SANITIZERS

+        DISABLE_CPPCHECK

+        DISABLE_CLANG_TIDY

+        DISABLE_INCLUDE_WHAT_YOU_USE

+    )

+    set(ONE_VALUE_ARGS

+        CXX_STANDARD

+    )

+    set(MULTI_VALUE_ARGS

+        PACKAGES

+        FETCHCONTENT

+        DEPENDENCIES_PUBLIC

+        DEPENDENCIES_PRIVATE

+        DEPENDENCIES_TESTS

+        DEFINES

+    )

+    cmake_parse_arguments(PARSE_ARGV 0 ARG

+        "${OPTIONS}"

+        "${ONE_VALUE_ARGS}"

+        "${MULTI_VALUE_ARGS}"

+    )

+

+    ## Helper variables

+    set(NON_INTERFACE_TARGETS)

+    set(PROJECT_IS_INTERFACE_LIBRARY)

+    set(PROJECT_IS_TOP_LEVEL)

+    get_target_property(PROJECT_TYPE ${PROJECT_NAME} TYPE)

+    if("${PROJECT_TYPE}" STREQUAL "INTERFACE_LIBRARY")

+        set(PROJECT_IS_INTERFACE_LIBRARY TRUE)

+    endif()

+    if("${CMAKE_PROJECT_NAME}" STREQUAL "${PROJECT_NAME}")

+        set(PROJECT_IS_TOP_LEVEL TRUE)

+    endif()

+

+    ## CMake modules

+    include(FetchContent)

+    include(CMakePackageConfigHelpers)

+    include(CheckIPOSupported)

+    include(GNUInstallDirs)

+    if(PROJECT_IS_TOP_LEVEL)

+        include(CTest)

+        include(CPack)

+    endif()

+

+    ## Packages

+    foreach(PACKAGE ${ARG_PACKAGES})

+        find_package(${PACKAGE} REQUIRED)

+    endforeach()

+

+    ## Fetch content

+    foreach(FETCHCONTENT ${ARG_FETCHCONTENT})

+        get_filename_component(FETCHCONTENT_NAME ${FETCHCONTENT} NAME)

+        FetchContent_Declare(${FETCHCONTENT_NAME}

+            GIT_REPOSITORY ${FETCHCONTENT}

+        )

+        FetchContent_MakeAvailable(${FETCHCONTENT_NAME})

+    endforeach()

+

+    ## Configure main target

+    file(GLOB_RECURSE SRC CONFIGURE_DEPENDS

+        src/*

+    )

+    file(GLOB_RECURSE INCLUDE CONFIGURE_DEPENDS

+        include/*

+    )

+    if(NOT ("${SRC}" STREQUAL "" AND "${INCLUDE}" STREQUAL ""))

+        target_sources(${PROJECT_NAME}

+            PRIVATE

+                ${SRC}

+                ${INCLUDE}

+        )

+        set_property(TARGET ${PROJECT_NAME} APPEND PROPERTY

+            PUBLIC_HEADER ${INCLUDE}

+        )

+        if(PROJECT_IS_INTERFACE_LIBRARY)

+            target_include_directories(${PROJECT_NAME}

+                INTERFACE

+                    "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"

+                    "$<INSTALL_INTERFACE:include>"

+            )

+        else()

+            target_include_directories(${PROJECT_NAME}

+                PUBLIC

+                    "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"

+                    "$<INSTALL_INTERFACE:include>"

+                PRIVATE

+                    src

+            )

+            list(APPEND NON_INTERFACE_TARGETS ${PROJECT_NAME})

+        endif()

+        target_link_libraries(${PROJECT_NAME}

+            PUBLIC

+                ${ARG_DEPENDENCIES_PUBLIC}

+            PRIVATE

+                "$<BUILD_INTERFACE:${ARG_DEPENDENCIES_PRIVATE}>"

+        )

+        if(PROJECT_IS_TOP_LEVEL)

+            install(TARGETS ${PROJECT_NAME} EXPORT ${PROJECT_NAME})

+            install(EXPORT ${PROJECT_NAME}

+                FILE ${PROJECT_NAME}Config.cmake

+                DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}

+            )

+            write_basic_package_version_file(${PROJECT_NAME}ConfigVersion.cmake

+                COMPATIBILITY SameMajorVersion

+            )

+            install(

+                FILES ${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake

+                DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}

+            )

+        endif()

+    endif()

+

+    ## Declare and configure test targets

+    if(PROJECT_IS_TOP_LEVEL AND BUILD_TESTING)

+        file(GLOB_RECURSE TESTS_COMMON CONFIGURE_DEPENDS

+            tests/common/*

+        )

+        file(GLOB TESTS LIST_DIRECTORIES FALSE CONFIGURE_DEPENDS

+            tests/*

+        )

+        foreach(TEST ${TESTS})

+            get_filename_component(TEST_NAME "${TEST}" NAME_WE)

+            set(TEST_TARGET "${PROJECT_NAME}-test-${TEST_NAME}")

+            add_executable(${TEST_TARGET}

+                ${TEST}

+                ${TESTS_COMMON}

+            )

+            target_include_directories(${TEST_TARGET}

+                PRIVATE

+                    tests

+            )

+            target_link_libraries(${TEST_TARGET}

+                PRIVATE

+                    ${PROJECT_NAME}

+                    ${ARG_DEPENDENCIES_TESTS}

+            )

+            add_test(

+                NAME    ${TEST_TARGET}

+                COMMAND ${TEST_TARGET}

+            )

+            list(APPEND NON_INTERFACE_TARGETS ${TEST_TARGET})

+        endforeach()

+    endif()

+

+    ## Declare and configure assets

+    file(REMOVE_RECURSE

+        ${CMAKE_BINARY_DIR}/assets

+    )

+    file(GLOB_RECURSE ASSETS RELATIVE "${PROJECT_SOURCE_DIR}" CONFIGURE_DEPENDS

+        assets/*

+    )

+    if(NOT "${ASSETS}" STREQUAL "")

+        add_custom_target(${PROJECT_NAME}-assets)

+        add_dependencies(${PROJECT_NAME} ${PROJECT_NAME}-assets)

+    endif()

+    foreach(ASSET ${ASSETS})

+        get_filename_component(ASSET_DIR ${ASSET} DIRECTORY)

+        add_custom_command(

+            DEPENDS

+                ${PROJECT_SOURCE_DIR}/${ASSET}

+            OUTPUT

+                ${CMAKE_BINARY_DIR}/${ASSET}

+            COMMAND

+                ${CMAKE_COMMAND} -E make_directory

+                    ${CMAKE_BINARY_DIR}/${ASSET_DIR}

+            COMMAND

+                ${CMAKE_COMMAND} -E create_symlink

+                    ${PROJECT_SOURCE_DIR}/${ASSET}

+                    ${CMAKE_BINARY_DIR}/${ASSET}

+            VERBATIM

+        )

+        set_property(TARGET ${PROJECT_NAME}-assets APPEND PROPERTY

+            SOURCES ${CMAKE_BINARY_DIR}/${ASSET}

+        )

+        if(NOT "${ASSET}" MATCHES "/tests/")

+            install(

+                FILES

+                    ${PROJECT_SOURCE_DIR}/${ASSET}

+                DESTINATION

+                    ${CMAKE_INSTALL_DATADIR}/${CMAKE_PROJECT_NAME}/${ASSET_DIR}

+            )

+        endif()

+    endforeach()

+

+    ## Preprocessor defines

+    set_property(TARGET ${NON_INTERFACE_TARGETS} APPEND PROPERTY

+        COMPILE_DEFINITIONS ${ARG_DEFINES}

+    )

+

+    ## Language version

+    if(NOT "${CXX_STANDARD}" STREQUAL "")

+        set_target_properties(${NON_INTERFACE_TARGETS} PROPERTIES

+            CXX_STANDARD          ${ARG_CXX_STANDARD}

+            CXX_STANDARD_REQUIRED ON

+            CXX_EXTENSIONS        OFF

+        )

+    endif()

+

+    ## Build options

+    if(MSVC)

+        set(COMPILE_OPTIONS

+            /permissive-

+            /WX

+            /W4

+        )

+    elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU|.*Clang")

+        if(NOT ARG_DISABLE_SANITIZERS)

+            set(SANITIZE_OPTIONS

+                $<$<CONFIG:Debug>:

+                    -g -fno-omit-frame-pointer

+                    -fsanitize=address,leak,undefined

+                    -fsanitize=float-divide-by-zero

+                    -fsanitize=float-cast-overflow

+                    # -fsanitize=pointer-compare

+                    # -fsanitize=pointer-subtract

+                    # -fsanitize=implicit-conversion

+                    -fno-sanitize-recover=all

+                >

+            )

+        endif()

+        set(COMPILE_OPTIONS

+            -pedantic

+            -Werror # -Wfatal-errors

+            -Wall -Wextra

+            -Wconversion -Wsign-conversion

+            -Wdouble-promotion

+            -Wimplicit-fallthrough

+            -Wvla

+            # -Wzero-as-null-pointer-constant

+            # -Wshadow

+            -Weffc++

+            ${SANITIZE_OPTIONS}

+        )

+        set(LINK_OPTIONS

+            ${SANITIZE_OPTIONS}

+        )

+        check_ipo_supported(RESULT INTERPROCEDURAL_OPTIMIZATION)

+    endif()

+    set_property(TARGET ${NON_INTERFACE_TARGETS} APPEND PROPERTY

+        COMPILE_OPTIONS "${COMPILE_OPTIONS}"

+    )

+    set_property(TARGET ${NON_INTERFACE_TARGETS} APPEND PROPERTY

+        LINK_OPTIONS "${LINK_OPTIONS}"

+    )

+    set_property(TARGET ${NON_INTERFACE_TARGETS} APPEND PROPERTY

+        INTERPROCEDURAL_OPTIMIZATION "${INTERPROCEDURAL_OPTIMIZATION}"

+    )

+

+    ## Sanitizer environment variables

+    set(SAN_STRIP_PATH_PREFIX strip_path_prefix=${PROJECT_BINARY_DIR})

+    set(ASAN_OPTIONS  "${SAN_STRIP_PATH_PREFIX}")

+    set(LSAN_OPTIONS  "${SAN_STRIP_PATH_PREFIX}")

+    set(UBSAN_OPTIONS "${SAN_STRIP_PATH_PREFIX}")

+    file(GLOB ASAN_SUPP CONFIGURE_DEPENDS

+        .asan.supp

+    )

+    file(GLOB LSAN_SUPP CONFIGURE_DEPENDS

+        .lsan.supp

+    )

+    file(GLOB UBSAN_SUPP CONFIGURE_DEPENDS

+        .ubsan.supp

+    )

+    if(NOT "${ASAN_SUPP}" STREQUAL "")

+        set(ASAN_OPTIONS "${ASAN_OPTIONS},suppressions=${ASAN_SUPP}")

+    endif()

+    if(NOT "${LSAN_SUPP}" STREQUAL "")

+        set(LSAN_OPTIONS "${LSAN_OPTIONS},suppressions=${LSAN_SUPP}")

+    endif()

+    if(NOT "${UBSAN_SUPP}" STREQUAL "")

+        set(UBSAN_OPTIONS "${UBSAN_OPTIONS},suppressions=${UBSAN_SUPP}")

+    endif()

+    # set(ASAN_OPTIONS "${ASAN_OPTIONS},detect_leaks=1")

+    # set(UBSAN_OPTIONS "${UBSAN_OPTIONS},print_stacktrace=1")

+    set_property(TEST ${NON_INTERFACE_TARGETS} APPEND PROPERTY

+        ENVIRONMENT

+            ASAN_OPTIONS=${ASAN_OPTIONS}

+            LSAN_OPTIONS=${LSAN_OPTIONS}

+            UBSAN_OPTIONS=${UBSAN_OPTIONS}

+    )

+

+    ## Tools

+    if(PROJECT_IS_TOP_LEVEL)

+        find_program(CPPCHECK             cppcheck)

+        find_program(CLANG_TIDY           clang-tidy)

+        find_program(INCLUDE_WHAT_YOU_USE include-what-you-use)

+        if(CPPCHECK AND NOT ARG_DISABLE_CPPCHECK)

+            set(CXX_CPPCHECK ${CPPCHECK}

+                --enable=warning,style

+                --error-exitcode=1

+            )

+        endif()

+        if(CLANG_TIDY AND NOT ARG_DISABLE_CLANG_TIDY)

+            set(CXX_CLANG_TIDY ${CLANG_TIDY})

+        endif()

+        if(INCLUDE_WHAT_YOU_USE AND NOT ARG_DISABLE_INCLUDE_WHAT_YOU_USE)

+            set(CXX_INCLUDE_WHAT_YOU_USE ${INCLUDE_WHAT_YOU_USE})

+        endif()

+        set_target_properties(${NON_INTERFACE_TARGETS} PROPERTIES

+            EXPORT_COMPILE_COMMANDS  ON

+            CXX_CPPCHECK             "${CXX_CPPCHECK}"

+            CXX_CLANG_TIDY           "${CXX_CLANG_TIDY}"

+            CXX_INCLUDE_WHAT_YOU_USE "${CXX_INCLUDE_WHAT_YOU_USE}"

+        )

+    endif()

+endfunction()