Enable building NativeAOT for Apple mobile platforms

These changes allow the NativeAOT runtime to compile for and run on iOS, tvOS and MacCatalyst.

Contributes to dotnet#81024

eng/Subsets.props

@@ -45,7 +45,8 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <RuntimeFlavor Condition="'$(TargetsMobile)' == 'true'">Mono</RuntimeFlavor>
+    <RuntimeFlavor Condition="'$(TargetsMobile)' == 'true' and !$(_subset.Contains('+clr.nativeaotlibs+'))">Mono</RuntimeFlavor>
+    <RuntimeFlavor Condition="'$(TargetsMobile)' == 'true' and $(_subset.Contains('+clr.nativeaotlibs+'))">CoreCLR</RuntimeFlavor>
     <RuntimeFlavor Condition="'$(RuntimeFlavor)' == '' and ($(_subset.Contains('+mono+')) or $(_subset.Contains('+mono.runtime+'))) and (!$(_subset.Contains('+clr+')) and !$(_subset.Contains('+clr.runtime+')))">Mono</RuntimeFlavor>
     <RuntimeFlavor Condition="'$(RuntimeFlavor)' == ''">$(PrimaryRuntimeFlavor)</RuntimeFlavor>
   </PropertyGroup>
@@ -71,7 +72,8 @@
     <DefaultLibrariesSubsets Condition="'$(BuildTargetFramework)' == '$(NetCoreAppCurrent)' or
                                         '$(BuildTargetFramework)' == '' or
                                         '$(BuildAllConfigurations)' == 'true'">libs.native+</DefaultLibrariesSubsets>
-    <DefaultLibrariesSubsets>$(DefaultLibrariesSubsets)libs.sfx+libs.oob+libs.pretest</DefaultLibrariesSubsets>
+    <DefaultLibrariesSubsets>$(DefaultLibrariesSubsets)libs.sfx+libs.oob+</DefaultLibrariesSubsets>
+    <DefaultLibrariesSubsets Condition="'$(TargetsMobile)' == 'true' and !$(_subset.Contains('+clr.nativeaotlibs+'))">$(DefaultLibrariesSubsets)+libs.pretest</DefaultLibrariesSubsets>
 
     <DefaultToolsSubsets>tools.illink</DefaultToolsSubsets>
 
@@ -105,7 +107,7 @@
 
   <PropertyGroup>
     <!-- CLR NativeAot only builds in a subset of the matrix -->
-    <NativeAotSupported Condition="('$(TargetOS)' == 'windows' or '$(TargetOS)' == 'linux' or '$(TargetOS)' == 'osx' or '$(TargetOS)' == 'freebsd') and ('$(TargetArchitecture)' == 'x64' or '$(TargetArchitecture)' == 'arm64')">true</NativeAotSupported>
+    <NativeAotSupported Condition="('$(TargetOS)' == 'windows' or '$(TargetOS)' == 'linux' or '$(TargetOS)' == 'osx' or '$(TargetOS)' == 'maccatalyst' or '$(TargetOS)' == 'iossimulator' or '$(TargetOS)' == 'ios' or '$(TargetOS)' == 'tvossimulator' or '$(TargetOS)' == 'tvos' or '$(TargetOS)' == 'freebsd') and ('$(TargetArchitecture)' == 'x64' or '$(TargetArchitecture)' == 'arm64')">true</NativeAotSupported>
 
     <!-- If we're building clr.nativeaotlibs and not building the CLR runtime, compile libraries against NativeAOT CoreLib -->
     <UseNativeAotCoreLib Condition="$(_subset.Contains('+clr.nativeaotlibs+')) and !$(_subset.Contains('+clr.native+')) and !$(_subset.Contains('+clr.runtime+'))">true</UseNativeAotCoreLib>

eng/native/build-commons.sh

@@ -102,6 +102,58 @@ build_native()
             echo "Error: Unknown Android architecture $hostArch."
             exit 1
         fi
+    elif [[ "$__TargetOS" == iossimulator ]]; then
+        cmakeArgs="-C $__RepoRootDir/eng/native/tryrun_ios_tvos.cmake $cmakeArgs"
+
+        # set default iOS simulator deployment target
+        # keep in sync with src/mono/Directory.Build.props, eng/native/build-commons.sh
+        cmakeArgs="-DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_SYSROOT=iphonesimulator -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 $cmakeArgs"
+        if [[ "$__TargetArch" == x64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"x86_64\" $cmakeArgs"
+        elif [[ "$__TargetArch" == arm64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"arm64\" $cmakeArgs"
+        else
+            echo "Error: Unknown iOS Simulator architecture $__TargetArch."
+            exit 1
+        fi
+    elif [[ "$__TargetOS" == ios ]]; then
+        cmakeArgs="-C $__RepoRootDir/eng/native/tryrun_ios_tvos.cmake $cmakeArgs"
+
+        # set default iOS device deployment target
+        # keep in sync with src/mono/Directory.Build.props, eng/native/build-commons.sh
+        cmakeArgs="-DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_SYSROOT=iphoneos -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 $cmakeArgs"
+        if [[ "$__TargetArch" == arm64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"arm64\" $cmakeArgs"
+        else
+            echo "Error: Unknown iOS architecture $__TargetArch."
+            exit 1
+        fi
+    elif [[ "$__TargetOS" == tvossimulator ]]; then
+        cmakeArgs="-C $__RepoRootDir/eng/native/tryrun_ios_tvos.cmake $cmakeArgs"
+
+        # set default tvOS simulator deployment target
+        # keep in sync with src/mono/Directory.Build.props, eng/native/build-commons.sh
+        cmakeArgs="-DCMAKE_SYSTEM_NAME=tvOS -DCMAKE_OSX_SYSROOT=appletvsimulator -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 $cmakeArgs"
+        if [[ "$__TargetArch" == x64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"x86_64\" $cmakeArgs"
+        elif [[ "$__TargetArch" == arm64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"arm64\" $cmakeArgs"
+        else
+            echo "Error: Unknown tvOS Simulator architecture $__TargetArch."
+            exit 1
+        fi
+    elif [[ "$__TargetOS" == tvos ]]; then
+        cmakeArgs="-C $__RepoRootDir/eng/native/tryrun_ios_tvos.cmake $cmakeArgs"
+
+        # set default tvOS device deployment target
+        # keep in sync with src/mono/Directory.Build.props, eng/native/build-commons.sh
+        cmakeArgs="-DCMAKE_SYSTEM_NAME=tvOS -DCMAKE_OSX_SYSROOT=appletvos -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 $cmakeArgs"
+        if [[ "$__TargetArch" == arm64 ]]; then
+            cmakeArgs="-DCMAKE_OSX_ARCHITECTURES=\"arm64\" $cmakeArgs"
+        else
+            echo "Error: Unknown tvOS architecture $__TargetArch."
+            exit 1
+        fi
     fi
 
     if [[ "$__UseNinja" == 1 ]]; then

eng/native/configurecompiler.cmake

@@ -276,14 +276,36 @@ if (CLR_CMAKE_HOST_UNIX)
   add_definitions(-DHOST_UNIX)
 
   if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST)
-    add_definitions(-DHOST_OSX)
+    if(CLR_CMAKE_HOST_MACCATALYST)
+      add_definitions(-DHOST_MACCATALYST)
+    else()
+      add_definitions(-DHOST_OSX)
+    endif()
     if(CLR_CMAKE_HOST_UNIX_AMD64)
       message("Detected OSX x86_64")
     elseif(CLR_CMAKE_HOST_UNIX_ARM64)
       message("Detected OSX ARM64")
     else()
       clr_unknown_arch()
     endif()
+  elseif (CLR_CMAKE_HOST_IOS)
+    add_definitions(-DHOST_IOS)
+    if(CLR_CMAKE_HOST_UNIX_AMD64)
+      message("Detected iOS x86_64")
+    elseif(CLR_CMAKE_HOST_UNIX_ARM64)
+      message("Detected iOS ARM64")
+    else()
+      clr_unknown_arch()
+    endif()
+  elseif (CLR_CMAKE_HOST_TVOS)
+    add_definitions(-DHOST_TVOS)
+    if(CLR_CMAKE_HOST_UNIX_AMD64)
+      message("Detected tvOS x86_64")
+    elseif(CLR_CMAKE_HOST_UNIX_ARM64)
+      message("Detected tvOS ARM64")
+    else()
+      clr_unknown_arch()
+    endif()
   elseif(CLR_CMAKE_HOST_FREEBSD)
     if(CLR_CMAKE_HOST_UNIX_ARM64)
       message("Detected FreeBSD aarch64")
@@ -540,8 +562,14 @@ if(CLR_CMAKE_TARGET_UNIX)
   add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_UNIX>)
   # Contracts are disabled on UNIX.
   add_definitions(-DDISABLE_CONTRACTS)
-  if(CLR_CMAKE_TARGET_OSX AND NOT CLR_CMAKE_TARGET_IOS AND NOT CLR_CMAKE_TARGET_TVOS)
+  if(CLR_CMAKE_TARGET_OSX)
     add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_OSX>)
+  elseif(CLR_CMAKE_TARGET_MACCATALYST)
+    add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_MACCATALYST>)
+  elseif(CLR_CMAKE_TARGET_IOS)
+    add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_IOS>)
+  elseif(CLR_CMAKE_TARGET_TVOS)
+    add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_TVOS>)
   elseif(CLR_CMAKE_TARGET_FREEBSD)
     add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_OS>>>:TARGET_FREEBSD>)
   elseif(CLR_CMAKE_TARGET_ANDROID)

eng/native/tryrun_ios_tvos.cmake

@@ -0,0 +1,50 @@
+macro(set_cache_value)
+  set(${ARGV0} ${ARGV1} CACHE STRING "Result from TRY_RUN" FORCE)
+  set(${ARGV0}__TRYRUN_OUTPUT "dummy output" CACHE STRING "Output from TRY_RUN" FORCE)
+endmacro()
+
+set_cache_value(HAVE_SCHED_GETCPU_EXITCODE 1)
+set_cache_value(HAVE_CLOCK_MONOTONIC_COARSE_EXITCODE 1)
+set_cache_value(HAVE_CLOCK_MONOTONIC_EXITCODE 0)
+
+
+# TODO: these are taken from macOS, check these whether they're correct for iOS
+# some of them are probably not used by what we use from NativeAOT so could be reduced
+set_cache_value(FILE_OPS_CHECK_FERROR_OF_PREVIOUS_CALL_EXITCODE 1)
+set_cache_value(GETPWUID_R_SETS_ERRNO_EXITCODE 1)
+set_cache_value(HAS_POSIX_SEMAPHORES_EXITCODE 1)
+set_cache_value(HAVE_BROKEN_FIFO_KEVENT_EXITCODE 1)
+set_cache_value(HAVE_BROKEN_FIFO_SELECT_EXITCODE 1)
+set_cache_value(HAVE_CLOCK_REALTIME_EXITCODE 0)
+set_cache_value(HAVE_CLOCK_THREAD_CPUTIME_EXITCODE 0)
+set_cache_value(HAVE_CLOCK_GETTIME_NSEC_NP_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_ACOS_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_ASIN_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_ATAN2_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_EXP_EXITCODE 1)
+set_cache_value(HAVE_COMPATIBLE_ILOGB0_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_ILOGBNAN_EXITCODE 1)
+set_cache_value(HAVE_COMPATIBLE_LOG10_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_LOG_EXITCODE 0)
+set_cache_value(HAVE_COMPATIBLE_POW_EXITCODE 0)
+set_cache_value(HAVE_FUNCTIONAL_PTHREAD_ROBUST_MUTEXES_EXITCODE 1)
+set_cache_value(HAVE_LARGE_SNPRINTF_SUPPORT_EXITCODE 0)
+set_cache_value(HAVE_MMAP_DEV_ZERO_EXITCODE 1)
+set_cache_value(HAVE_PROCFS_CTL_EXITCODE 1)
+set_cache_value(HAVE_PROCFS_MAPS_EXITCODE 1)
+set_cache_value(HAVE_PROCFS_STATUS_EXITCODE 1)
+set_cache_value(HAVE_PROCFS_STAT_EXITCODE 1)
+set_cache_value(HAVE_SCHED_GET_PRIORITY_EXITCODE 0)
+set_cache_value(HAVE_VALID_NEGATIVE_INF_POW_EXITCODE 0)
+set_cache_value(HAVE_VALID_POSITIVE_INF_POW_EXITCODE 0)
+set_cache_value(HAVE_WORKING_CLOCK_GETTIME_EXITCODE 0)
+set_cache_value(HAVE_WORKING_GETTIMEOFDAY_EXITCODE 0)
+set_cache_value(MMAP_ANON_IGNORES_PROTECTION_EXITCODE 1)
+set_cache_value(ONE_SHARED_MAPPING_PER_FILEREGION_PER_PROCESS_EXITCODE 1)
+set_cache_value(PTHREAD_CREATE_MODIFIES_ERRNO_EXITCODE 1)
+set_cache_value(REALPATH_SUPPORTS_NONEXISTENT_FILES_EXITCODE 1)
+set_cache_value(SEM_INIT_MODIFIES_ERRNO_EXITCODE 1)
+set_cache_value(SSCANF_CANNOT_HANDLE_MISSING_EXPONENT_EXITCODE 1)
+set_cache_value(SSCANF_SUPPORT_ll_EXITCODE 0)
+set_cache_value(UNGETC_NOT_RETURN_EOF_EXITCODE 1)
+set_cache_value(HAVE_SHM_OPEN_THAT_WORKS_WELL_ENOUGH_WITH_MMAP_EXITCODE 1)

src/coreclr/clrdefinitions.cmake

@@ -29,9 +29,9 @@ if (CLR_CMAKE_TARGET_UNIX)
 
 endif(CLR_CMAKE_TARGET_UNIX)
 
-if (CLR_CMAKE_TARGET_OSX AND CLR_CMAKE_TARGET_ARCH_ARM64)
+if ((CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_MACCATALYST OR CLR_CMAKE_TARGET_IOS OR CLR_CMAKE_TARGET_TVOS) AND CLR_CMAKE_TARGET_ARCH_ARM64)
   add_compile_definitions($<$<NOT:$<BOOL:$<TARGET_PROPERTY:IGNORE_DEFAULT_TARGET_ARCH>>>:OSX_ARM64_ABI>)
-endif(CLR_CMAKE_TARGET_OSX AND CLR_CMAKE_TARGET_ARCH_ARM64)
+endif((CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_MACCATALYST OR CLR_CMAKE_TARGET_IOS OR CLR_CMAKE_TARGET_TVOS) AND CLR_CMAKE_TARGET_ARCH_ARM64)
 
 if(CLR_CMAKE_TARGET_ALPINE_LINUX)
   # Alpine Linux doesn't have fixed stack limit, this define disables some stack pointer

src/coreclr/crosscomponents.cmake

@@ -33,7 +33,7 @@ if (CLR_CMAKE_HOST_OS STREQUAL CLR_CMAKE_TARGET_OS)
     endif()
 endif()
 
-if(NOT CLR_CMAKE_HOST_LINUX AND NOT CLR_CMAKE_HOST_OSX AND NOT FEATURE_CROSSBITNESS)
+if(NOT CLR_CMAKE_HOST_LINUX AND NOT CLR_CMAKE_HOST_OSX AND NOT CLR_CMAKE_HOST_MACCATALYST AND NOT CLR_CMAKE_HOST_IOS AND NOT CLR_CMAKE_HOST_TVOS AND NOT FEATURE_CROSSBITNESS)
     install_clr (TARGETS
         mscordaccore
         mscordbi

src/coreclr/debug/dbgutil/CMakeLists.txt

@@ -5,9 +5,9 @@ if(CLR_CMAKE_HOST_WIN32)
   set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded)
 endif(CLR_CMAKE_HOST_WIN32)
 
-if(CLR_CMAKE_HOST_WIN32 OR CLR_CMAKE_HOST_OSX)
+if(CLR_CMAKE_HOST_WIN32 OR CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
   include_directories(${CLR_DIR}/inc/llvm)
-endif(CLR_CMAKE_HOST_WIN32 OR CLR_CMAKE_HOST_OSX)
+endif(CLR_CMAKE_HOST_WIN32 OR CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
 
 add_definitions(-DPAL_STDCPP_COMPAT)
 
@@ -25,10 +25,10 @@ if(CLR_CMAKE_TARGET_LINUX)
     )
 endif(CLR_CMAKE_TARGET_LINUX)
 
-if(CLR_CMAKE_TARGET_OSX)
+if(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
     list(APPEND DBGUTIL_SOURCES
         machoreader.cpp
     )
-endif(CLR_CMAKE_TARGET_OSX)
+endif(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
 
 add_library_clr(dbgutil STATIC ${DBGUTIL_SOURCES})

src/coreclr/dlls/mscordac/CMakeLists.txt

@@ -31,14 +31,14 @@ else(CLR_CMAKE_HOST_WIN32)
     # Add dependency on export file
     add_custom_target(mscordaccore_exports DEPENDS ${EXPORTS_FILE})
 
-    if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
         generate_exports_file(${DEF_SOURCES} ${EXPORTS_FILE})
-    endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
+    endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS OR CLR_CMAKE_HOST_FREEBSD OR CLR_CMAKE_HOST_NETBSD OR CLR_CMAKE_HOST_SUNOS)
 
-    if(CORECLR_SET_RPATH AND CLR_CMAKE_HOST_OSX AND CLR_CMAKE_HOST_ARCH_ARM64)
+    if(CORECLR_SET_RPATH AND (CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS) AND CLR_CMAKE_HOST_ARCH_ARM64)
       set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
       set(CMAKE_INSTALL_NAME_DIR "@rpath")
-    endif(CORECLR_SET_RPATH AND CLR_CMAKE_HOST_OSX AND CLR_CMAKE_HOST_ARCH_ARM64)
+    endif(CORECLR_SET_RPATH AND (CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS) AND CLR_CMAKE_HOST_ARCH_ARM64)
 
     if(CLR_CMAKE_HOST_LINUX)
 

src/coreclr/dlls/mscordbi/CMakeLists.txt

@@ -2,15 +2,15 @@
 # Set the RPATH of mscordbi so that it can find dependencies without needing to set LD_LIBRARY_PATH
 # For more information: http://www.cmake.org/Wiki/CMake_RPATH_handling.
 if(CORECLR_SET_RPATH)
-  if(CLR_CMAKE_HOST_OSX)
+  if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
     set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)
     set(CMAKE_INSTALL_NAME_DIR "@rpath")
     set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
     set(CMAKE_INSTALL_RPATH "@loader_path")
   else()
     set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
     set(CMAKE_INSTALL_RPATH "\$ORIGIN")
-  endif(CLR_CMAKE_HOST_OSX)
+  endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
 endif(CORECLR_SET_RPATH)
 
 set(CMAKE_INCLUDE_CURRENT_DIR ON)

src/coreclr/dlls/mscoree/coreclr/CMakeLists.txt

@@ -50,11 +50,11 @@ else(CLR_CMAKE_HOST_WIN32)
         set(END_WHOLE_ARCHIVE -Wl,--no-whole-archive)
     endif(CLR_CMAKE_TARGET_LINUX OR CLR_CMAKE_TARGET_FREEBSD OR CLR_CMAKE_TARGET_NETBSD OR CLR_CMAKE_TARGET_SUNOS)
 
-    if(CLR_CMAKE_TARGET_OSX)
+    if(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
         # These options are used to force every object to be included even if it's unused.
         set(START_WHOLE_ARCHIVE -force_load)
         set(END_WHOLE_ARCHIVE )
-    endif(CLR_CMAKE_TARGET_OSX)
+    endif(CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
 
     set_exports_linker_option(${EXPORTS_FILE})
 
@@ -167,7 +167,7 @@ if(FEATURE_MERGE_JIT_AND_ENGINE)
     set(CLRJIT_STATIC clrjit_static)
 endif(FEATURE_MERGE_JIT_AND_ENGINE)
 
-if (CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_MACCATALYST)
+if (CLR_CMAKE_TARGET_OSX OR CLR_CMAKE_TARGET_MACCATALYST OR CLR_CMAKE_TARGET_IOS)
     include(CMakeFindFrameworks)
     find_library(FOUNDATION Foundation REQUIRED)
 endif()

src/coreclr/gc/CMakeLists.txt

@@ -112,12 +112,12 @@ install_clr(TARGETS clrgc DESTINATIONS . COMPONENT runtime)
 add_definitions(-DBUILD_AS_STANDALONE)
 add_definitions(-DFX_VER_INTERNALNAME_STR=clrgc.dll)
 add_definitions(-DVERIFY_HEAP)
-if(CLR_CMAKE_HOST_OSX)
-  # The implementation of GCToOSInterface on MacOS makes use of non-POSIX
+if(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
+  # The implementation of GCToOSInterface on Apple platforms makes use of non-POSIX
   # pthreads APIs, which by default are not included in the pthreads header
   # unless we define this macro.
   add_definitions(-D_DARWIN_C_SOURCE)
-endif(CLR_CMAKE_HOST_OSX)
+endif(CLR_CMAKE_HOST_OSX OR CLR_CMAKE_HOST_MACCATALYST OR CLR_CMAKE_HOST_IOS OR CLR_CMAKE_HOST_TVOS)
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/env)

src/coreclr/gc/gc.cpp

@@ -24072,9 +24072,9 @@ inline void Prefetch(void* addr)
     __prefetch((const char*)addr);
 #endif //defined(TARGET_AMD64) || defined(TARGET_X86)
 
-#elif defined(TARGET_UNIX) || defined(TARGET_OSX)
+#elif defined(TARGET_UNIX)
     __builtin_prefetch(addr);
-#else //!(TARGET_WINDOWS || TARGET_UNIX || TARGET_OSX)
+#else //!(TARGET_WINDOWS || TARGET_UNIX)
     UNREFERENCED_PARAMETER(addr);
 #endif //TARGET_WINDOWS
 }