merge 3.3 (#18248)

Misc/NEWS

@@ -123,6 +123,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #18248: Fix libffi build on AIX.
+
 - Issue #18259: Declare sethostname in socketmodule.c for AIX
 
 - Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list()

Modules/_ctypes/libffi.diff

@@ -135,7 +135,7 @@ diff -r -N -u libffi.orig/configure.ac libffi/configure.ac
 +    'M32R': ['src/m32r/sysv.S', 'src/m32r/ffi.c'],
 +    'M68K': ['src/m68k/ffi.c', 'src/m68k/sysv.S'],
 +    'POWERPC': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S', 'src/powerpc/linux64.S', 'src/powerpc/linux64_closure.S'],
-+    'POWERPC_AIX': ['src/powerpc/ffi.c', 'src/powerpc/aix.S', 'src/powerpc/aix_closure.S'],
++    'POWERPC_AIX': ['src/powerpc/ffi_darwin.c', 'src/powerpc/aix.S', 'src/powerpc/aix_closure.S'],
 +    'POWERPC_FREEBSD': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S'],
 +    'ARM': ['src/arm/sysv.S', 'src/arm/ffi.c'],
 +    'LIBFFI_CRIS': ['src/cris/sysv.S', 'src/cris/ffi.c'],

Modules/_ctypes/libffi/fficonfig.py.in

@@ -16,7 +16,7 @@ ffi_platforms = {
     'M32R': ['src/m32r/sysv.S', 'src/m32r/ffi.c'],
     'M68K': ['src/m68k/ffi.c', 'src/m68k/sysv.S'],
     'POWERPC': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S', 'src/powerpc/linux64.S', 'src/powerpc/linux64_closure.S'],
-    'POWERPC_AIX': ['src/powerpc/ffi.c', 'src/powerpc/aix.S', 'src/powerpc/aix_closure.S'],
+    'POWERPC_AIX': ['src/powerpc/ffi_darwin.c', 'src/powerpc/aix.S', 'src/powerpc/aix_closure.S'],
     'POWERPC_FREEBSD': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S'],
     'ARM': ['src/arm/sysv.S', 'src/arm/ffi.c'],
     'LIBFFI_CRIS': ['src/cris/sysv.S', 'src/cris/ffi.c'],