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blender-archive/build_files/build_environment/patches/python_macos.diff
Stefan Werner 9715ad5aca macOS: Support arm64 architecture. 
Enabling all `make deps` dependencies with the exception of Embree and OIDN.
After that, Blender can be compiled on an Apple Silicon Mac just like on any
Intel based Mac. There are still compiler warnings that need to be
investigated and there are probably a couple of bug still to be discovered
and to be fixed.

Most patches to the dependencies are simple and are about disabling SSE and
setting the proper architecture to compiile for. Notable exception is Python,
where I back ported a yet to be accepted PR for upstream Python:
https://github.com/python/cpython/pull/21249

Cross compiling or buliding a Universal Binary is not supported yet.
The minimum macOS target version for x86_64 remains at 10.13, the target
for arm64 is 11.00.

Differential Revision: https://developer.blender.org/D8236
2020-07-16 09:37:38 +02:00

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diff -ru a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
--- a/Doc/library/ctypes.rst 2020-03-10 07:11:12.000000000 +0100
+++ b/Doc/library/ctypes.rst 2020-07-14 08:10:10.000000000 +0200
@@ -1551,6 +1551,13 @@
value usable as argument (integer, string, ctypes instance). This allows
defining adapters that can adapt custom objects as function parameters.
+ .. attribute:: variadic
+
+ Assign a boolean to specify that the function takes a variable number of
+ arguments. This does not matter on most platforms, but for Apple arm64
+ platforms variadic functions have a different calling convention than
+ normal functions.
+
.. attribute:: errcheck
Assign a Python function or another callable to this attribute. The
diff -ru a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
--- a/Modules/_ctypes/_ctypes.c 2020-03-10 07:11:12.000000000 +0100
+++ b/Modules/_ctypes/_ctypes.c 2020-07-14 08:14:41.000000000 +0200
@@ -3175,6 +3175,35 @@
}
static int
+PyCFuncPtr_set_variadic(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ignored))
+{
+ StgDictObject *dict = PyObject_stgdict((PyObject *)self);
+ assert(dict);
+ int r = PyObject_IsTrue(ob);
+ if (r == 1) {
+ dict->flags |= FUNCFLAG_VARIADIC;
+ return 0;
+ } else if (r == 0) {
+ dict->flags &= ~FUNCFLAG_VARIADIC;
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+static PyObject *
+PyCFuncPtr_get_variadic(PyCFuncPtrObject *self, void *Py_UNUSED(ignored))
+{
+ StgDictObject *dict = PyObject_stgdict((PyObject *)self);
+ assert(dict); /* Cannot be NULL for PyCFuncPtrObject instances */
+ if (dict->flags & FUNCFLAG_VARIADIC)
+ Py_RETURN_TRUE;
+ else
+ Py_RETURN_FALSE;
+}
+
+
+static int
PyCFuncPtr_set_argtypes(PyCFuncPtrObject *self, PyObject *ob, void *Py_UNUSED(ignored))
{
PyObject *converters;
@@ -5632,6 +5661,7 @@
PyModule_AddObject(m, "FUNCFLAG_USE_ERRNO", PyLong_FromLong(FUNCFLAG_USE_ERRNO));
PyModule_AddObject(m, "FUNCFLAG_USE_LASTERROR", PyLong_FromLong(FUNCFLAG_USE_LASTERROR));
PyModule_AddObject(m, "FUNCFLAG_PYTHONAPI", PyLong_FromLong(FUNCFLAG_PYTHONAPI));
+ PyModule_AddObject(m, "FUNCFLAG_VARIADIC", PyLong_FromLong(FUNCFLAG_VARIADIC));
PyModule_AddStringConstant(m, "__version__", "1.1.0");
PyModule_AddObject(m, "_memmove_addr", PyLong_FromVoidPtr(memmove));
diff -ru a/Modules/_ctypes/callproc.c b/Modules/_ctypes/callproc.c
--- a/Modules/_ctypes/callproc.c 2020-03-10 07:11:12.000000000 +0100
+++ b/Modules/_ctypes/callproc.c 2020-07-14 08:18:33.000000000 +0200
@@ -767,7 +767,8 @@
ffi_type **atypes,
ffi_type *restype,
void *resmem,
- int argcount)
+ int argcount,
+ int argtypecount)
{
PyThreadState *_save = NULL; /* For Py_BLOCK_THREADS and Py_UNBLOCK_THREADS */
PyObject *error_object = NULL;
@@ -793,15 +794,38 @@
if ((flags & FUNCFLAG_CDECL) == 0)
cc = FFI_STDCALL;
#endif
- if (FFI_OK != ffi_prep_cif(&cif,
- cc,
- argcount,
- restype,
- atypes)) {
- PyErr_SetString(PyExc_RuntimeError,
- "ffi_prep_cif failed");
- return -1;
- }
+#if HAVE_FFI_PREP_CIF_VAR
+ /* Everyone SHOULD set f.variadic=True on variadic function pointers, but
+ * lots of existing code will not. If there's at least one arg and more
+ * args are passed than are defined in the prototype, then it must be a
+ * variadic function. */
+ if ((flags & FUNCFLAG_VARIADIC) ||
+ (argtypecount != 0 && argcount > argtypecount))
+ {
+ if (FFI_OK != ffi_prep_cif_var(&cif,
+ cc,
+ argtypecount,
+ argcount,
+ restype,
+ atypes)) {
+ PyErr_SetString(PyExc_RuntimeError,
+ "ffi_prep_cif_var failed");
+ return -1;
+ }
+ } else {
+#endif
+ if (FFI_OK != ffi_prep_cif(&cif,
+ cc,
+ argcount,
+ restype,
+ atypes)) {
+ PyErr_SetString(PyExc_RuntimeError,
+ "ffi_prep_cif failed");
+ return -1;
+ }
+#if HAVE_FFI_PREP_CIF_VAR
+ }
+#endif
if (flags & (FUNCFLAG_USE_ERRNO | FUNCFLAG_USE_LASTERROR)) {
error_object = _ctypes_get_errobj(&space);
@@ -1185,9 +1209,8 @@
if (-1 == _call_function_pointer(flags, pProc, avalues, atypes,
rtype, resbuf,
- Py_SAFE_DOWNCAST(argcount,
- Py_ssize_t,
- int)))
+ Py_SAFE_DOWNCAST(argcount, Py_ssize_t, int),
+ Py_SAFE_DOWNCAST(argtype_count, Py_ssize_t, int)))
goto cleanup;
#ifdef WORDS_BIGENDIAN
diff -ru a/Modules/_ctypes/ctypes.h b/Modules/_ctypes/ctypes.h
--- a/Modules/_ctypes/ctypes.h 2020-03-10 07:11:12.000000000 +0100
+++ b/Modules/_ctypes/ctypes.h 2020-07-14 08:30:53.000000000 +0200
@@ -285,6 +285,7 @@
#define FUNCFLAG_PYTHONAPI 0x4
#define FUNCFLAG_USE_ERRNO 0x8
#define FUNCFLAG_USE_LASTERROR 0x10
+#define FUNCFLAG_VARIADIC 0x20
#define TYPEFLAG_ISPOINTER 0x100
#define TYPEFLAG_HASPOINTER 0x200
diff -ru a/configure b/configure
--- a/configure 2020-03-10 07:11:12.000000000 +0100
+++ b/configure 2020-07-14 08:03:27.000000000 +0200
@@ -3374,7 +3374,7 @@
# has no effect, don't bother defining them
Darwin/[6789].*)
define_xopen_source=no;;
- Darwin/1[0-9].*)
+ Darwin/[12][0-9].*)
define_xopen_source=no;;
# On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
# used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined
@@ -9251,6 +9251,9 @@
ppc)
MACOSX_DEFAULT_ARCH="ppc64"
;;
+ arm64)
+ MACOSX_DEFAULT_ARCH="arm64"
+ ;;
*)
as_fn_error $? "Unexpected output of 'arch' on OSX" "$LINENO" 5
;;
diff -ru a/configure.ac b/configure.ac
--- a/configure.ac 2020-03-10 07:11:12.000000000 +0100
+++ b/configure.ac 2020-07-14 08:03:27.000000000 +0200
@@ -2456,6 +2456,9 @@
ppc)
MACOSX_DEFAULT_ARCH="ppc64"
;;
+ arm64)
+ MACOSX_DEFAULT_ARCH="arm64"
+ ;;
*)
AC_MSG_ERROR([Unexpected output of 'arch' on OSX])
;;
diff -ru a/setup.py b/setup.py
--- a/setup.py 2020-03-10 07:11:12.000000000 +0100
+++ b/setup.py 2020-07-14 08:28:12.000000000 +0200
@@ -141,6 +141,13 @@
os.unlink(tmpfile)
return MACOS_SDK_ROOT
+
+def is_macosx_at_least(vers):
+ if host_platform == 'darwin':
+ dep_target = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET')
+ if dep_target:
+ return tuple(map(int, dep_target.split('.'))) >= vers
+ return False
def is_macosx_sdk_path(path):
"""
@@ -150,6 +157,13 @@
or path.startswith('/System/')
or path.startswith('/Library/') )
+def grep_headers_for(function, headers):
+ for header in headers:
+ with open(header, 'r') as f:
+ if function in f.read():
+ return True
+ return False
+
def find_file(filename, std_dirs, paths):
"""Searches for the directory where a given file is located,
and returns a possibly-empty list of additional directories, or None
@@ -1972,7 +1986,11 @@
return True
def detect_ctypes(self, inc_dirs, lib_dirs):
- self.use_system_libffi = False
+ if not sysconfig.get_config_var("LIBFFI_INCLUDEDIR") and is_macosx_at_least((10,15)):
+ self.use_system_libffi = True
+ else:
+ self.use_system_libffi = '--with-system-ffi' in sysconfig.get_config_var("CONFIG_ARGS")
+
include_dirs = []
extra_compile_args = []
extra_link_args = []
@@ -2016,32 +2034,48 @@
ext_test = Extension('_ctypes_test',
sources=['_ctypes/_ctypes_test.c'],
libraries=['m'])
+ ffi_inc = sysconfig.get_config_var("LIBFFI_INCLUDEDIR")
+ ffi_lib = None
+
self.extensions.extend([ext, ext_test])
if host_platform == 'darwin':
- if '--with-system-ffi' not in sysconfig.get_config_var("CONFIG_ARGS"):
+ if not self.use_system_libffi:
return
- # OS X 10.5 comes with libffi.dylib; the include files are
- # in /usr/include/ffi
- inc_dirs.append('/usr/include/ffi')
-
- ffi_inc = [sysconfig.get_config_var("LIBFFI_INCLUDEDIR")]
- if not ffi_inc or ffi_inc[0] == '':
- ffi_inc = find_file('ffi.h', [], inc_dirs)
- if ffi_inc is not None:
- ffi_h = ffi_inc[0] + '/ffi.h'
+ ffi_in_sdk = os.path.join(macosx_sdk_root(), "usr/include/ffi")
+ if os.path.exists(ffi_in_sdk):
+ ffi_inc = ffi_in_sdk
+ ffi_lib = 'ffi'
+ else:
+ # OS X 10.5 comes with libffi.dylib; the include files are
+ # in /usr/include/ffi
+ ffi_inc_dirs.append('/usr/include/ffi')
+
+ if not ffi_inc:
+ found = find_file('ffi.h', [], ffi_inc_dirs)
+ if found:
+ ffi_inc = found[0]
+ if ffi_inc:
+ ffi_h = ffi_inc + '/ffi.h'
if not os.path.exists(ffi_h):
ffi_inc = None
print('Header file {} does not exist'.format(ffi_h))
- ffi_lib = None
- if ffi_inc is not None:
+ if ffi_lib is None and ffi_inc:
for lib_name in ('ffi', 'ffi_pic'):
if (self.compiler.find_library_file(lib_dirs, lib_name)):
ffi_lib = lib_name
break
if ffi_inc and ffi_lib:
- ext.include_dirs.extend(ffi_inc)
+ ffi_headers = glob(os.path.join(ffi_inc, '*.h'))
+ if grep_headers_for('ffi_closure_alloc', ffi_headers):
+ try:
+ sources.remove('_ctypes/malloc_closure.c')
+ except ValueError:
+ pass
+ if grep_headers_for('ffi_prep_cif_var', ffi_headers):
+ ext.extra_compile_args.append("-DHAVE_FFI_PREP_CIF_VAR=1")
+ ext.include_dirs.append(ffi_inc)
ext.libraries.append(ffi_lib)
self.use_system_libffi = True
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