From 16535b7ee2d7dfadc591f7fcd68db75bc68c9868 Mon Sep 17 00:00:00 2001 From: "Ryan C. Gordon" Date: Tue, 23 Jul 2024 00:56:57 -0400 Subject: [PATCH] examples: Add CMake glue to optionally build examples, as we do for the tests. In fact, most of the CMake code was stolen from the test directory. --- CMakeLists.txt | 10 + docs/README-cmake.md | 8 + examples/CMakeLists.txt | 428 ++++++++++++++++++++++++++++++++++++++++ examples/README.md | 2 +- 4 files changed, 447 insertions(+), 1 deletion(-) create mode 100644 examples/CMakeLists.txt diff --git a/CMakeLists.txt b/CMakeLists.txt index 6cf1d243e..0f6c564f8 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -354,6 +354,9 @@ dep_option(SDL_INSTALL_TESTS "Install test-cases" OFF "NOT SDL_DISABLE_INSTALL dep_option(SDL_TESTS_LINK_SHARED "link tests to shared SDL library" "${SDL_SHARED}" "SDL_SHARED;SDL_STATIC" "${SDL_SHARED}") set(SDL_TESTS_TIMEOUT_MULTIPLIER "1" CACHE STRING "Timeout multiplier to account for really slow machines") +set_option(SDL_EXAMPLES "Build the examples directory") +dep_option(SDL_EXAMPLES_LINK_SHARED "link examples to shared SDL library" "${SDL_SHARED}" "SDL_SHARED;SDL_STATIC" "${SDL_SHARED}") + if(VITA) set_option(VIDEO_VITA_PIB "Build with PSVita piglet gles2 support" OFF) set_option(VIDEO_VITA_PVR "Build with PSVita PVR gles/gles2 support" OFF) @@ -3622,6 +3625,13 @@ if(SDL_TESTS) add_subdirectory(test) endif() +##### Examples subproject (must appear after the install/uninstall targets) ##### + +if(SDL_EXAMPLES) + set(HAVE_EXAMPLES ON) + add_subdirectory(examples) +endif() + ##### Fix Objective C builds ##### string(APPEND CMAKE_OBJC_FLAGS " ${CMAKE_C_FLAGS}") diff --git a/docs/README-cmake.md b/docs/README-cmake.md index acd3a0074..6c9630942 100644 --- a/docs/README-cmake.md +++ b/docs/README-cmake.md @@ -44,6 +44,14 @@ cmake -S ~/sdl -B ~/build -DSDL_TEST_LIBRARY=ON -DSDL_TESTS=ON ``` and then building normally. In this example, the test programs will be built and can be run from `~/build/tests/`. +### Building SDL examples + +You can build the SDL example programs by adding `-DSDL_EXAMPLES=ON` to the first cmake command above: +```sh +cmake -S ~/sdl -B ~/build -DSDL_EXAMPLES=ON +``` +and then building normally. In this example, the example programs will be built and can be run from `~/build/examples/`. + ## Including SDL in your project SDL can be included in your project in 2 major ways: diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt new file mode 100644 index 000000000..787f8ec60 --- /dev/null +++ b/examples/CMakeLists.txt @@ -0,0 +1,428 @@ +# +# CMake script for building the SDL examples +# + +list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../cmake") + +include(CheckIncludeFile) +include(CheckStructHasMember) +include(CMakePushCheckState) +include(sdlcompilers) + +if(SDL_EXAMPLES_LINK_SHARED) + set(sdl_name_component SDL3-shared) +else() + set(sdl_name_component SDL3-static) +endif() +set(HAVE_EXAMPLES_LINK_SHARED "${SDL_EXAMPLES_LINK_SHARED}" PARENT_SCOPE) + +# CMake incorrectly detects opengl32.lib being present on MSVC ARM64 +if(NOT (MSVC AND SDL_CPU_ARM64)) + # Prefer GLVND, if present + set(OpenGL_GL_PREFERENCE GLVND) + find_package(OpenGL) +endif() + +if(WINDOWS_STORE) + cmake_minimum_required(VERSION 3.19) + # CMP0112: Target file component generator expressions do not add target dependencies. + cmake_policy(SET CMP0112 NEW) +endif() + +set(SDL_EXAMPLE_EXECUTABLES) + +if(CMAKE_RUNTIME_OUTPUT_DIRECTORY) + set(example_bin_dir "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}") + if(NOT IS_ABSOLUTE "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}") + set(example_bin_dir "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_RUNTIME_OUTPUT_DIRECTORY}") + endif() +else() + set(example_bin_dir "${CMAKE_CURRENT_BINARY_DIR}") +endif() +if(NOT CMAKE_VERSION VERSION_LESS 3.20) + get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG) + set(example_bin_dir "${example_bin_dir}$<$:/$>") +endif() + +set(RESOURCE_FILE_NAMES) +set(RESOURCE_FILES_BINDIR) +foreach(resource_file IN LISTS RESOURCE_FILES) + get_filename_component(res_file_name ${resource_file} NAME) + list(APPEND RESOURCE_FILE_NAMES "${res_file_name}") + set(resource_file_bindir "${example_bin_dir}/${res_file_name}") + add_custom_command(OUTPUT "${resource_file_bindir}" + COMMAND "${CMAKE_COMMAND}" -E copy "${resource_file}" "${resource_file_bindir}" + DEPENDS "${resource_file}" + ) + list(APPEND RESOURCE_FILES_BINDIR "${resource_file_bindir}") +endforeach() +add_custom_target(copy-sdl-example-resources + DEPENDS "${RESOURCE_FILES_BINDIR}" +) + +if(WINDOWS_STORE) + add_library(sdl_example_main_callbacks_uwp OBJECT ../test/main.cpp) + target_link_libraries(sdl_example_main_callbacks_uwp PRIVATE SDL3::Headers) + target_compile_options(sdl_example_main_callbacks_uwp PRIVATE "/ZW") + target_compile_definitions(sdl_example_main_callbacks_uwp PRIVATE "SDL_MAIN_USE_CALLBACKS") + + set_source_files_properties(${RESOURCE_FILES} PROPERTIES VS_DEPLOYENT_LOCATION "Assets") +endif() + +macro(add_sdl_example_executable TARGET) + cmake_parse_arguments(AST "BUILD_DEPENDENT;NEEDS_RESOURCES;" "" "SOURCES" ${ARGN}) + if(AST_UNPARSED_ARGUMENTS) + message(FATAL_ERROR "Unknown argument(s): ${AST_UNPARSED_ARGUMENTS}") + endif() + if(NOT AST_SOURCES) + message(FATAL_ERROR "add_sdl_example_executable needs at least one source") + endif() + set(EXTRA_SOURCES "") + if(WINDOWS_STORE) + set(uwp_bindir "${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.dir") + if(NOT IS_DIRECTORY "${uwp_bindir}") + execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${uwp_bindir}") + endif() + string(REGEX REPLACE "[_]" "" SAFE_TARGET "${TARGET}") + file(GENERATE OUTPUT "${uwp_bindir}/${TARGET}.appxmanifest" + INPUT "${CMAKE_CURRENT_SOURCE_DIR}/uwp/Package.appxmanifest.in" + TARGET "${TARGET}" + ) + set_property(SOURCE "${uwp_bindir}/${TARGET}.appxmanifest" PROPERTY VS_DEPLOYMENT_CONTENT 1) + + list(APPEND EXTRA_SOURCES "$") + + list(APPEND EXTRA_SOURCES + "${uwp_bindir}/${TARGET}.appxmanifest" + "uwp/logo-50x50.png" + "uwp/square-44x44.png" + "uwp/square-150x150.png" + "uwp/splash-620x300.png" + ) + endif() + if(AST_NEEDS_RESOURCES) + list(APPEND EXTRA_SOURCES ${RESOURCE_FILES}) + endif() + if(ANDROID) + add_library(${TARGET} SHARED ${AST_SOURCES} ${EXTRA_SOURCES}) + else() + add_executable(${TARGET} ${AST_SOURCES} ${EXTRA_SOURCES}) + endif() + SDL_AddCommonCompilerFlags(${TARGET}) + target_include_directories(${TARGET} PRIVATE "${SDL3_SOURCE_DIR}/src/video/khronos") + target_link_libraries(${TARGET} PRIVATE SDL3::${sdl_name_component}) + + list(APPEND SDL_EXAMPLE_EXECUTABLES ${TARGET}) + if(AST_NEEDS_RESOURCES) + if(PSP OR PS2) + add_custom_command(TARGET ${TARGET} POST_BUILD + COMMAND ${CMAKE_COMMAND} ARGS -E make_directory $/sdl-${TARGET} + COMMAND ${CMAKE_COMMAND} ARGS -E copy_if_different ${RESOURCE_FILES} $/sdl-${TARGET}) + elseif(WINDOWS_STORE) + # MSVC does build the dependent targets (or POST_BUILD commands) when building an application + # after starting to debug. By copying the resources in a custom target, the files can be copied afterwards. + # FIXME: find out proper way to add assets to UWP package + cmake_minimum_required(VERSION 3.19) + add_custom_target(zzz-resources-copy-${TARGET} + COMMAND ${CMAKE_COMMAND} -E make_directory "$/AppX" + COMMAND ${CMAKE_COMMAND} -E copy_if_different ${RESOURCE_FILES} "$/AppX" + ) + add_dependencies(${TARGET} zzz-resources-copy-${TARGET}) + else() + add_dependencies(${TARGET} copy-sdl-example-resources) + endif() + if(APPLE) + # Make sure resource files get installed into macOS/iOS .app bundles. + set_target_properties(${TARGET} PROPERTIES RESOURCE "${RESOURCE_FILES}") + endif() + if(EMSCRIPTEN) + foreach(res IN LISTS RESOURCE_FILES) + get_filename_component(res_name "${res}" NAME) + target_link_options(${TARGET} PRIVATE "SHELL:--embed-file ${res}@${res_name}") + endforeach() + endif() + set_property(TARGET ${TARGET} APPEND PROPERTY ADDITIONAL_CLEAN_FILES "$/$$/>") + endif() + + if(WINDOWS) + # CET support was added in VS 16.7 + if(MSVC_VERSION GREATER 1926 AND CMAKE_GENERATOR_PLATFORM MATCHES "Win32|x64") + set_property(TARGET ${TARGET} APPEND_STRING PROPERTY LINK_FLAGS " -CETCOMPAT") + endif() + elseif(PSP) + target_link_libraries(${TARGET} PRIVATE GL) + endif() + if(WINDOWS_STORE) + target_compile_definitions(${TARGET} PRIVATE "SDL_MAIN_NOIMPL") + set_property(TARGET ${TARGET} PROPERTY WIN32_EXECUTABLE TRUE) + set_property(TARGET ${TARGET} PROPERTY RUNTIME_OUTPUT_DIRECTORY "${uwp_bindir}") + target_link_options(${TARGET} PRIVATE + -nodefaultlib:vccorlib$<$:d> + -nodefaultlib:msvcrt$<$:d> + vccorlib$<$:d>.lib + msvcrt$<$:d>.lib + ) + endif() + + if(EMSCRIPTEN) + set_property(TARGET ${TARGET} PROPERTY SUFFIX ".html") + endif() + + if(OPENGL_FOUND) + target_compile_definitions(${TARGET} PRIVATE HAVE_OPENGL) + endif() + + # FIXME: only add "${SDL3_BINARY_DIR}/include-config-$>" + include paths of external dependencies + target_include_directories(${TARGET} PRIVATE "$") +endmacro() + +add_sdl_example_executable(renderer-clear SOURCES renderer/clear/renderer-clear.c) + + +if(PSP) + # Build EBOOT files if building for PSP + foreach(APP ${SDL_EXAMPLE_EXECUTABLES}) + create_pbp_file( + TARGET ${APP} + TITLE SDL-${APP} + ICON_PATH NULL + BACKGROUND_PATH NULL + PREVIEW_PATH NULL + ) + add_custom_command( + TARGET ${APP} POST_BUILD + COMMAND ${CMAKE_COMMAND} -E make_directory + $/sdl-${APP} + ) + add_custom_command( + TARGET ${APP} POST_BUILD + COMMAND ${CMAKE_COMMAND} -E rename + $/EBOOT.PBP + $/sdl-${APP}/EBOOT.PBP + ) + if(BUILD_PRX) + add_custom_command( + TARGET ${APP} POST_BUILD + COMMAND ${CMAKE_COMMAND} -E copy + $/${APP} + $/sdl-${APP}/${APP} + ) + add_custom_command( + TARGET ${APP} POST_BUILD + COMMAND ${CMAKE_COMMAND} -E rename + $/${APP}.prx + $/sdl-${APP}/${APP}.prx + ) + endif() + add_custom_command( + TARGET ${APP} POST_BUILD + COMMAND ${CMAKE_COMMAND} -E remove + $/PARAM.SFO + ) + endforeach() +endif() + +if(N3DS) + set(ROMFS_DIR "${CMAKE_CURRENT_BINARY_DIR}/romfs") + file(COPY ${RESOURCE_FILES} DESTINATION "${ROMFS_DIR}") + + foreach(APP ${SDL_EXAMPLE_EXECUTABLES}) + get_target_property(TARGET_BINARY_DIR ${APP} BINARY_DIR) + set(SMDH_FILE "${TARGET_BINARY_DIR}/${APP}.smdh") + ctr_generate_smdh("${SMDH_FILE}" + NAME "SDL-${APP}" + DESCRIPTION "SDL3 Test suite" + AUTHOR "SDL3 Contributors" + ICON "${CMAKE_CURRENT_SOURCE_DIR}/n3ds/logo48x48.png" + ) + ctr_create_3dsx( + ${APP} + ROMFS "${ROMFS_DIR}" + SMDH "${SMDH_FILE}" + ) + endforeach() +endif() + +if(RISCOS) + set(SDL_EXAMPLE_EXECUTABLES_AIF) + foreach(APP ${SDL_EXAMPLE_EXECUTABLES}) + set_property(TARGET ${APP} APPEND_STRING PROPERTY LINK_FLAGS " -static") + add_custom_command( + OUTPUT ${APP},ff8 + COMMAND elf2aif ${APP} ${APP},ff8 + DEPENDS ${APP} + ) + add_custom_target(${APP}-aif ALL DEPENDS ${APP},ff8) + list(APPEND SDL_EXAMPLE_EXECUTABLES_AIF ${CMAKE_CURRENT_BINARY_DIR}/${APP},ff8) + endforeach() +endif() + +# Set Apple App ID / Bundle ID. This is needed to launch apps on some Apple +# platforms (iOS, for example). +if(APPLE) + foreach(CURRENT_TARGET ${SDL_EXAMPLE_EXECUTABLES}) + set_target_properties("${CURRENT_TARGET}" PROPERTIES + MACOSX_BUNDLE_GUI_IDENTIFIER "org.libsdl.${CURRENT_TARGET}" + MACOSX_BUNDLE_BUNDLE_VERSION "${SDL3_VERSION}" + MACOSX_BUNDLE_SHORT_VERSION_STRING "${SDL3_VERSION}" + ) + endforeach() +endif() + +if(SDL_INSTALL_EXAMPLES) + if(RISCOS) + install( + FILES ${SDL_EXAMPLE_EXECUTABLES_AIF} + DESTINATION ${CMAKE_INSTALL_LIBEXECDIR}/installed-examples/SDL3 + ) + else() + install( + TARGETS ${SDL_EXAMPLE_EXECUTABLES} + DESTINATION ${CMAKE_INSTALL_LIBEXECDIR}/installed-examples/SDL3 + ) + endif() + if(MSVC) + foreach(example IN LISTS SDL_EXAMPLE_EXECUTABLES) + SDL_install_pdb(${example} "${CMAKE_INSTALL_LIBEXECDIR}/installed-examples/SDL3") + endforeach() + endif() + install( + FILES ${RESOURCE_FILES} + DESTINATION ${CMAKE_INSTALL_LIBEXECDIR}/installed-examples/SDL3 + ) +endif() + +if(ANDROID AND TARGET SDL3::Jar) + list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/../cmake/android") + find_package(SdlAndroid MODULE) + if(SdlAndroid_FOUND) + set(apks "") + set(packages "") + + include(SdlAndroidFunctions) + sdl_create_android_debug_keystore(SDL_example-debug-keystore) + sdl_android_compile_resources(SDL_example-resources RESFOLDER android/res) + add_custom_target(sdl-example-apks) + foreach(EXAMPLE ${SDL_EXAMPLE_EXECUTABLES}) + set(ANDROID_MANIFEST_APP_NAME "${EXAMPLE}") + set(ANDROID_MANIFEST_LABEL "${EXAMPLE}") + set(ANDROID_MANIFEST_LIB_NAME "$") + set(ANDROID_MANIFEST_PACKAGE "org.libsdl.sdl.example.${EXAMPLE}") + set(generated_manifest_path "${CMAKE_CURRENT_BINARY_DIR}/android/${EXAMPLE}-src/AndroidManifest.xml") + string(REPLACE "." "/" JAVA_PACKAGE_DIR "${ANDROID_MANIFEST_PACKAGE}") + set(GENERATED_SRC_FOLDER "${CMAKE_CURRENT_BINARY_DIR}/android/${EXAMPLE}-src") + set(GENERATED_RES_FOLDER "${GENERATED_SRC_FOLDER}/res") + set(JAVA_PACKAGE_DIR "${GENERATED_SRC_FOLDER}/${JAVA_PACKAGE_DIR}") + configure_file(android/cmake/SDLEntryTestActivity.java.cmake "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java" @ONLY) + configure_file(android/cmake/SDLTestActivity.java.cmake "${JAVA_PACKAGE_DIR}/SDLTestActivity.java" @ONLY) + configure_file(android/cmake/res/values/strings.xml.cmake android/res/values/strings-${EXAMPLE}.xml @ONLY) + configure_file(android/cmake/res/xml/shortcuts.xml.cmake "${GENERATED_RES_FOLDER}/xml/shortcuts.xml" @ONLY) + configure_file(android/cmake/AndroidManifest.xml.cmake "${generated_manifest_path}" @ONLY) + file(GENERATE + OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/android/${EXAMPLE}-$/res/values/strings.xml" + INPUT "${CMAKE_CURRENT_BINARY_DIR}/android/res/values/strings-${EXAMPLE}.xml" + ) + + sdl_android_compile_resources(${EXAMPLE}-resources + RESOURCES + "${CMAKE_CURRENT_BINARY_DIR}/android/${EXAMPLE}-$/res/values/strings.xml" + "${GENERATED_RES_FOLDER}/xml/shortcuts.xml" + ) + + sdl_android_link_resources(${EXAMPLE}-apk-linked + MANIFEST "${generated_manifest_path}" + PACKAGE ${ANDROID_MANIFEST_PACKAGE} + RES_TARGETS SDL_example-resources ${EXAMPLE}-resources + TARGET_SDK_VERSION 31 + ) + + set(CMAKE_JAVA_COMPILE_FLAGS "-encoding;utf-8") + set(classes_path "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${EXAMPLE}-java.dir/classes") + # Some CMake versions have a slow `cmake -E make_directory` implementation + if(NOT IS_DIRECTORY "${classes_path}") + execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory "${classes_path}") + endif() + set(OUT_JAR "${CMAKE_CURRENT_BINARY_DIR}/${EXAMPLE}.jar") + add_custom_command( + OUTPUT "${OUT_JAR}" + COMMAND ${CMAKE_COMMAND} -E rm -rf "${classes_path}" + COMMAND ${CMAKE_COMMAND} -E make_directory "${classes_path}" + COMMAND ${Java_JAVAC_EXECUTABLE} + -source 1.8 -target 1.8 + -bootclasspath "$" + "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java" + "${JAVA_PACKAGE_DIR}/SDLTestActivity.java" + $ + -cp "$:${SDL_ANDROID_PLATFORM_ANDROID_JAR}" + -d "${classes_path}" + COMMAND ${Java_JAR_EXECUTABLE} cf "${OUT_JAR}" -C "${classes_path}" . + DEPENDS $ "$" "${JAVA_PACKAGE_DIR}/SDLTestActivity.java" "${JAVA_PACKAGE_DIR}/SDLEntryTestActivity.java" + ) + add_custom_target(${EXAMPLE}-jar DEPENDS "${OUT_JAR}") + set_property(TARGET ${EXAMPLE}-jar PROPERTY OUTPUT "${OUT_JAR}") + + set(dexworkdir "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${EXAMPLE}-dex.dir") + # Some CMake versions have a slow `cmake -E make_directory` implementation + if(NOT IS_DIRECTORY "${dexworkdir}") + execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${dexworkdir}") + endif() + set(classes_dex_base_name "classes.dex") + set(classes_dex "${dexworkdir}/${classes_dex_base_name}") + add_custom_command( + OUTPUT "${classes_dex}" + COMMAND SdlAndroid::d8 + $ + $ + --lib "${SDL_ANDROID_PLATFORM_ANDROID_JAR}" + --output "${dexworkdir}" + DEPENDS $ $ + ) + add_custom_target(${EXAMPLE}-dex DEPENDS "${classes_dex}") + set_property(TARGET ${EXAMPLE}-dex PROPERTY OUTPUT "${classes_dex}") + set_property(TARGET ${EXAMPLE}-dex PROPERTY OUTPUT_BASE_NAME "${classes_dex_base_name}") + + sdl_add_to_apk_unaligned(${EXAMPLE}-unaligned-apk + APK_IN ${EXAMPLE}-apk-linked + OUTDIR "${CMAKE_CURRENT_BINARY_DIR}/intermediates" + ASSETS ${RESOURCE_FILES} + NATIVE_LIBS SDL3::SDL3-shared ${EXAMPLE} + DEX ${EXAMPLE}-dex + ) + + sdl_apk_align(${EXAMPLE}-aligned-apk ${EXAMPLE}-unaligned-apk + OUTDIR "${CMAKE_CURRENT_BINARY_DIR}/intermediates" + ) + sdl_apk_sign(${EXAMPLE}-apk ${EXAMPLE}-aligned-apk + KEYSTORE SDL_example-debug-keystore + ) + add_dependencies(sdl-example-apks ${EXAMPLE}-apk) + + if(TARGET SdlAndroid::adb) + add_custom_target(install-${EXAMPLE} + COMMAND "${CMAKE_COMMAND}" -DACTION=install "-DAPKS=$" -P "${SDL3_SOURCE_DIR}/cmake/android/SdlAndroidScript.cmake" + DEPENDS "${EXAMPLE}-apk" + ) + add_custom_target(start-${EXAMPLE} + COMMAND "${ADB_BIN}" shell am start-activity -S "${ANDROID_MANIFEST_PACKAGE}/.SDLTestActivity" + ) + add_custom_target(build-install-start-${EXAMPLE} + COMMAND "${CMAKE_COMMAND}" -DACTION=build-install-run "-DEXECUTABLES=${EXAMPLE}" "-DBUILD_FOLDER=${CMAKE_BINARY_DIR}" -P "${SDL3_SOURCE_DIR}/cmake/android/SdlAndroidScript.cmake" + ) + endif() + + list(APPEND packages "${ANDROID_MANIFEST_PACKAGE}") + list(APPEND install_targets install-${EXAMPLE}) + endforeach() + + if(TARGET SdlAndroid::adb) + add_custom_target(install-sdl-example-apks + DEPENDS ${install_targets} + VERBATIM + ) + add_custom_target(uninstall-sdl-example-apks + COMMAND "${CMAKE_COMMAND}" "-DADB=$" -DACTION=uninstall "-DPACKAGES=${packages}" -P "${SDL3_SOURCE_DIR}/cmake/android/SdlAndroidScript.cmake" + VERBATIM + ) + endif() + endif() +endif() diff --git a/examples/README.md b/examples/README.md index 4df45a3dc..872e0870a 100644 --- a/examples/README.md +++ b/examples/README.md @@ -33,7 +33,7 @@ docs/README-main-functions.md (or view that page on the web on ## I would like to build and run these examples myself. -When you build SDL with CMake, you can add `-DSDL_BUILD_EXAMPLES=On` to the +When you build SDL with CMake, you can add `-DSDL_EXAMPLES=On` to the CMake command line. When you build SDL, these examples will be built with it. But most of these can just be built as a single .c file, as long as you point