Relax the requirement that test programs be C90 compliant

Fixes https://github.com/libsdl-org/SDL/issues/14588

test/CMakeLists.txt

@@ -44,7 +44,6 @@ option(SDLTEST_TRACKMEM "Run tests with --trackmem" OFF)
 if(WIN32)
     option(SDLTEST_PROCDUMP "Run tests using sdlprocdump for minidump generation" OFF)
     add_executable(sdlprocdump win32/sdlprocdump.c)
-    set_property(TARGET sdlprocdump PROPERTY C_STANDARD "90")
     SDL_AddCommonCompilerFlags(sdlprocdump)
     if(SDLTEST_PROCDUMP)
         set(CMAKE_TEST_LAUNCHER "$<TARGET_FILE:sdlprocdump>;--")
@@ -100,7 +99,7 @@ define_property(TARGET PROPERTY SDL_NONINTERACTIVE_ARGUMENTS BRIEF_DOCS "Argumen
 define_property(TARGET PROPERTY SDL_NONINTERACTIVE_TIMEOUT BRIEF_DOCS "Timeout for noninteractive executable." FULL_DOCS "Timeout for noninteractive executable.")
 
 function(add_sdl_test_executable TARGET)
-    cmake_parse_arguments(AST "BUILD_DEPENDENT;NONINTERACTIVE;NEEDS_RESOURCES;TESTUTILS;THREADS;NO_C90;MAIN_CALLBACKS;NOTRACKMEM" "" "DEPENDS;DISABLE_THREADS_ARGS;NONINTERACTIVE_TIMEOUT;NONINTERACTIVE_ARGS;INSTALLED_ARGS;SOURCES" ${ARGN})
+    cmake_parse_arguments(AST "BUILD_DEPENDENT;NONINTERACTIVE;NEEDS_RESOURCES;TESTUTILS;THREADS;MAIN_CALLBACKS;NOTRACKMEM" "" "DEPENDS;DISABLE_THREADS_ARGS;NONINTERACTIVE_TIMEOUT;NONINTERACTIVE_ARGS;INSTALLED_ARGS;SOURCES" ${ARGN})
     if(AST_UNPARSED_ARGUMENTS)
         message(FATAL_ERROR "Unknown argument(s): ${AST_UNPARSED_ARGUMENTS}")
     endif()
@@ -123,10 +122,6 @@ function(add_sdl_test_executable TARGET)
     SDL_AddCommonCompilerFlags(${TARGET})
     target_include_directories(${TARGET} PRIVATE "${SDL3_SOURCE_DIR}/src/video/khronos")
     target_link_libraries(${TARGET} PRIVATE SDL3::SDL3_test SDL3::${sdl_name_component})
-    if(NOT AST_NO_C90 AND NOT SDL_CMAKE_PLATFORM MATCHES "^(n3ds|ps2|psp)$")
-        set_property(TARGET ${TARGET} PROPERTY C_STANDARD 90)
-        set_property(TARGET ${TARGET} PROPERTY C_EXTENSIONS FALSE)
-    endif()
     if(AST_DEPENDS)
         add_dependencies(${TARGET} ${AST_DEPENDS})
     endif()
@@ -279,7 +274,7 @@ if(FFmpeg_FOUND)
     cmake_pop_check_state()
 endif()
 if(FFmpeg_FOUND AND LIBAVUTIL_AVFRAME_HAS_CH_LAYOUT)
-    add_sdl_test_executable(testffmpeg NO_C90 SOURCES testffmpeg.c testffmpeg_vulkan.c ${icon_png_header} DEPENDS generate-icon_png_header)
+    add_sdl_test_executable(testffmpeg SOURCES testffmpeg.c testffmpeg_vulkan.c ${icon_png_header} DEPENDS generate-icon_png_header)
     if(LIBAVUTIL_AVFULKANFRAMESCONTEXT_HAS_FORMAT)
       target_compile_definitions(testffmpeg PRIVATE FFMPEG_VULKAN_SUPPORT)
     endif()
@@ -305,7 +300,7 @@ add_sdl_test_executable(testaudioinfo SOURCES testaudioinfo.c)
 add_sdl_test_executable(testaudiostreamdynamicresample NEEDS_RESOURCES TESTUTILS SOURCES testaudiostreamdynamicresample.c)
 
 file(GLOB TESTAUTOMATION_SOURCE_FILES testautomation*.c)
-add_sdl_test_executable(testautomation NONINTERACTIVE NONINTERACTIVE_TIMEOUT 120 NEEDS_RESOURCES BUILD_DEPENDENT NO_C90 SOURCES ${TESTAUTOMATION_SOURCE_FILES})
+add_sdl_test_executable(testautomation NONINTERACTIVE NONINTERACTIVE_TIMEOUT 120 NEEDS_RESOURCES BUILD_DEPENDENT SOURCES ${TESTAUTOMATION_SOURCE_FILES})
 if(EMSCRIPTEN)
     target_link_options(testautomation PRIVATE -sALLOW_MEMORY_GROWTH=1 -sMAXIMUM_MEMORY=1gb)
 endif()
@@ -324,7 +319,7 @@ add_sdl_test_executable(testsymbols NONINTERACTIVE NOTRACKMEM NONINTERACTIVE_ARG
 
 set(build_options_dependent_tests )
 
-add_sdl_test_executable(testevdev BUILD_DEPENDENT NONINTERACTIVE NO_C90 SOURCES testevdev.c)
+add_sdl_test_executable(testevdev BUILD_DEPENDENT NONINTERACTIVE SOURCES testevdev.c)
 
 if(MACOS)
     add_sdl_test_executable(testnative BUILD_DEPENDENT NEEDS_RESOURCES TESTUTILS
@@ -336,7 +331,7 @@ if(MACOS)
 elseif(WINDOWS)
     add_sdl_test_executable(testnative BUILD_DEPENDENT NEEDS_RESOURCES TESTUTILS SOURCES testnative.c testnativew32.c)
 elseif(HAVE_X11 OR HAVE_WAYLAND)
-    add_sdl_test_executable(testnative BUILD_DEPENDENT NO_C90 NEEDS_RESOURCES TESTUTILS SOURCES testnative.c)
+    add_sdl_test_executable(testnative BUILD_DEPENDENT NEEDS_RESOURCES TESTUTILS SOURCES testnative.c)
     if(HAVE_X11)
         target_sources(testnative PRIVATE testnativex11.c)
         target_link_libraries(testnative PRIVATE X11)
@@ -381,7 +376,7 @@ add_sdl_test_executable(testime NEEDS_RESOURCES TESTUTILS SOURCES testime.c)
 add_sdl_test_executable(testkeys SOURCES testkeys.c)
 add_sdl_test_executable(testloadso SOURCES testloadso.c)
 add_sdl_test_executable(testlocale NONINTERACTIVE SOURCES testlocale.c)
-add_sdl_test_executable(testlock NO_C90 SOURCES testlock.c)
+add_sdl_test_executable(testlock SOURCES testlock.c)
 add_sdl_test_executable(testrwlock SOURCES testrwlock.c NONINTERACTIVE NONINTERACTIVE_TIMEOUT 20)
 add_sdl_test_executable(testmouse SOURCES testmouse.c)
 
@@ -425,7 +420,7 @@ if(EMSCRIPTEN)
 endif()
 add_sdl_test_executable(testbounds NONINTERACTIVE SOURCES testbounds.c)
 add_sdl_test_executable(testcustomcursor SOURCES testcustomcursor.c)
-add_sdl_test_executable(testvulkan NO_C90 SOURCES testvulkan.c)
+add_sdl_test_executable(testvulkan SOURCES testvulkan.c)
 add_sdl_test_executable(testoffscreen SOURCES testoffscreen.c)
 add_sdl_test_executable(testpopup SOURCES testpopup.c)
 add_sdl_test_executable(testdialog SOURCES testdialog.c)
@@ -449,7 +444,7 @@ get_property(SDL_TEST_EXECUTABLES DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" PROPER
 if (HAVE_WAYLAND)
     # Set the GENERATED property on the protocol file, since it is first created at build time
     set_property(SOURCE ${SDL3_BINARY_DIR}/wayland-generated-protocols/xdg-shell-protocol.c PROPERTY GENERATED 1)
-    add_sdl_test_executable(testwaylandcustom NO_C90 NEEDS_RESOURCES SOURCES testwaylandcustom.c ${SDL3_BINARY_DIR}/wayland-generated-protocols/xdg-shell-protocol.c)
+    add_sdl_test_executable(testwaylandcustom NEEDS_RESOURCES SOURCES testwaylandcustom.c ${SDL3_BINARY_DIR}/wayland-generated-protocols/xdg-shell-protocol.c)
     # Needed to silence the documentation warning in the generated header file
     target_compile_options(testwaylandcustom PRIVATE -Wno-documentation-unknown-command)
     target_link_libraries(testwaylandcustom PRIVATE wayland-client)