gh-114099: Add preprocessor declarations to support compilation on iOS

Include/internal/pycore_faulthandler.h

@@ -12,6 +12,14 @@ extern "C" {
 #  include <signal.h>             // sigaction
 #endif
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
+// tvOS and watchOS don't provide a number of important POSIX functions.
+#if TARGET_OS_TV || TARGET_OS_WATCH
+#  undef HAVE_SIGALTSTACK
+#endif /* TVOS || WATCHOS */
 
 #ifndef MS_WINDOWS
    /* register() is useless on Windows, because only SIGSEGV, SIGABRT and

Misc/NEWS.d/next/Library/2024-02-05-14-55-19.gh-issue-114099.iHk3Zn.rst

@@ -0,0 +1,2 @@
+Preprocessor directives to support compilation on iOS/tvOS/watchOS were
+added.

Misc/platform_triplet.c

@@ -233,7 +233,42 @@ PLATFORM_TRIPLET=i386-gnu
 #   error unknown platform triplet
 # endif
 #elif defined(__APPLE__)
+#  include "TargetConditionals.h"
+#  if TARGET_OS_IOS
+#    if TARGET_OS_SIMULATOR
+#      if __x86_64__
+PLATFORM_TRIPLET=iphonesimulator-x86_64
+#      else
+PLATFORM_TRIPLET=iphonesimulator-arm64
+#      endif
+#    else
+PLATFORM_TRIPLET=iphoneos-arm64
+#    endif
+#  elif TARGET_OS_TV
+#    if TARGET_OS_SIMULATOR
+#      if __x86_64__
+PLATFORM_TRIPLET=appletvsimulator-x86_64
+#      else
+PLATFORM_TRIPLET=appletvsimulator-arm64
+#      endif
+#    else
+PLATFORM_TRIPLET=appletvos-arm64
+#    endif
+#  elif TARGET_OS_WATCH
+#    if TARGET_OS_SIMULATOR
+#      if __x86_64__
+PLATFORM_TRIPLET=watchsimulator-x86_64
+#      else
+PLATFORM_TRIPLET=watchsimulator-arm64
+#      endif
+#    else
+PLATFORM_TRIPLET=watchos-arm64_32
+#    endif
+#  elif TARGET_OS_OSX
 PLATFORM_TRIPLET=darwin
+#  else
+#    error unknown Apple platform
+#  endif
 #elif defined(__VXWORKS__)
 PLATFORM_TRIPLET=vxworks
 #elif defined(__wasm32__)

Modules/posixmodule.c

@@ -92,6 +92,8 @@
 
 #include <mach/mach.h>
 
+#include "TargetConditionals.h"
+
 #if defined(__has_builtin)
 #if __has_builtin(__builtin_available)
 #define HAVE_BUILTIN_AVAILABLE 1
@@ -376,6 +378,13 @@ corresponding Unix manual entries for more information on calls.");
 #  define fsync _commit
 #endif  /* ! __WATCOMC__ || __QNX__ */
 
+// iOS/tvOS/watchOS *define* some POSIX methods,
+// but raise a compiler error if they are used.
+#if TARGET_OS_IPHONE
+#  undef HAVE_GETGROUPS
+#  undef HAVE_SYSTEM
+#endif
+
 /*[clinic input]
 # one of the few times we lie about this name!
 module os

Modules/pwdmodule.c

@@ -1,6 +1,10 @@
 
 /* UNIX password file access module */
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
 #include "Python.h"
 #include "posixmodule.h"
 
@@ -183,6 +187,22 @@ pwd_getpwuid(PyObject *module, PyObject *uidobj)
         if (nomem == 1) {
             return PyErr_NoMemory();
         }
+
+// iPhone has a "user" with UID 501, username "mobile"; but the simulator
+// doesn't reflect this. Generate a simulated response.
+#if TARGET_OS_SIMULATOR
+        if (uid == 501) {
+            struct passwd mp;
+            mp.pw_name = "mobile";
+            mp.pw_passwd = "/smx7MYTQIi2M";
+            mp.pw_uid = 501;
+            mp.pw_gid = 501;
+            mp.pw_gecos = "Mobile User";
+            mp.pw_dir = "/var/mobile";
+            mp.pw_shell = "/bin/sh";
+            return mkpwent(module, &mp);
+        }
+#endif
         PyObject *uid_obj = _PyLong_FromUid(uid);
         if (uid_obj == NULL)
             return NULL;
@@ -266,6 +286,22 @@ pwd_getpwnam_impl(PyObject *module, PyObject *name)
             PyErr_NoMemory();
         }
         else {
+// iPhone has a "user" with UID 501, username "mobile"; but the simulator
+// doesn't reflect this. Generate a simulated response.
+#if TARGET_OS_SIMULATOR
+            if (strcmp(name, "mobile") == 0) {
+                struct passwd mp;
+                mp.pw_name = "mobile";
+                mp.pw_passwd = "/smx7MYTQIi2M";
+                mp.pw_uid = 501;
+                mp.pw_gid = 501;
+                mp.pw_gecos = "Mobile User";
+                mp.pw_dir = "/var/mobile";
+                mp.pw_shell = "/bin/sh";
+                retval = mkpwent(module, &mp);
+                goto out;
+            }
+#endif
             PyErr_Format(PyExc_KeyError,
                          "getpwnam(): name not found: %R", name);
         }

Modules/timemodule.c

@@ -6,6 +6,10 @@
 #include "pycore_namespace.h"     // _PyNamespace_New()
 #include "pycore_runtime.h"       // _Py_ID()
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
 #include <time.h>                 // clock()
 #ifdef HAVE_SYS_TIMES_H
 #  include <sys/times.h>          // times()
@@ -59,6 +63,10 @@
 #  define HAVE_CLOCK_GETTIME_RUNTIME 1
 #endif
 
+// iOS/tvOS/watchOS *define* clock_settime, but it can't be used
+#if TARGET_OS_IPHONE
+#   undef HAVE_CLOCK_SETTIME
+#endif
 
 #define SEC_TO_NS (1000 * 1000 * 1000)
 

Python/bootstrap_hash.c

@@ -40,6 +40,16 @@
 #endif
 
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
+// iOS/tvOS/watchOS *define* some POSIX methods,
+// but raise a compiler error if they are used.
+#if TARGET_OS_IPHONE
+#  undef HAVE_GETENTROPY
+#endif
+
 #ifdef Py_DEBUG
 int _Py_HashSecret_Initialized = 0;
 #else

Python/dynload_shlib.c

@@ -28,6 +28,10 @@
 #define LEAD_UNDERSCORE ""
 #endif
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
 /* The .so extension module ABI tag, supplied by the Makefile via
    Makefile.pre.in and configure.  This is used to discriminate between
    incompatible .so files so that extensions for different Python builds can
@@ -38,12 +42,21 @@ const char *_PyImport_DynLoadFiletab[] = {
 #ifdef __CYGWIN__
     ".dll",
 #else  /* !__CYGWIN__ */
-    "." SOABI ".so",
-#ifdef ALT_SOABI
-    "." ALT_SOABI ".so",
-#endif
-    ".abi" PYTHON_ABI_STRING ".so",
-    ".so",
+#  ifdef __APPLE__
+#    if TARGET_OS_IPHONE
+#      define SHLIB_SUFFIX ".dylib"
+#    else
+#      define SHLIB_SUFFIX ".so"
+#    endif
+#  else
+#    define SHLIB_SUFFIX ".so"
+#  endif
+    "." SOABI SHLIB_SUFFIX,
+#  ifdef ALT_SOABI
+    "." ALT_SOABI SHLIB_SUFFIX,
+#  endif
+    ".abi" PYTHON_ABI_STRING SHLIB_SUFFIX,
+    SHLIB_SUFFIX,
 #endif  /* __CYGWIN__ */
     NULL,
 };

Python/marshal.c

@@ -14,6 +14,10 @@
 #include "pycore_setobject.h"     // _PySet_NextEntry()
 #include "marshal.h"              // Py_MARSHAL_VERSION
 
+#ifdef __APPLE__
+#  include "TargetConditionals.h"
+#endif /* __APPLE__ */
+
 /*[clinic input]
 module marshal
 [clinic start generated code]*/
@@ -33,11 +37,15 @@ module marshal
  * #if defined(MS_WINDOWS) && defined(_DEBUG)
  */
 #if defined(MS_WINDOWS)
-#define MAX_MARSHAL_STACK_DEPTH 1000
+#  define MAX_MARSHAL_STACK_DEPTH 1000
 #elif defined(__wasi__)
-#define MAX_MARSHAL_STACK_DEPTH 1500
+#  define MAX_MARSHAL_STACK_DEPTH 1500
 #else
-#define MAX_MARSHAL_STACK_DEPTH 2000
+#  if TARGET_OS_IPHONE
+#    define MAX_MARSHAL_STACK_DEPTH 1500
+#  else
+#    define MAX_MARSHAL_STACK_DEPTH 2000
+#  endif
 #endif
 
 #define TYPE_NULL               '0'