unix: add support for Python 3.8 on aarch64-unknown-linux-gnu

This appears to be rather straightforward. I'm unsure why this
wasn't implemented in the first place. It may have been due to
historical issues with cross-compiles. I think I may have made
these issues go away with a batch of commits in January 2022.

I haven't tested these distributions very thoroughly. But they are
built similarly to 3.9 and 3.10 so hopefully they work just as well.

Closes #135.

Author: indygreg

.github/workflows/linux.yml

@@ -44,7 +44,17 @@ jobs:
       fail-fast: false
       matrix:
         build:
-          # Cross-compiles can't do PGO and require Python 3.9.
+          # Cross-compiles can't do PGO.
+          - target_triple: 'aarch64-unknown-linux-gnu'
+            py: 'cpython-3.8'
+            optimizations: 'debug'
+          - target_triple: 'aarch64-unknown-linux-gnu'
+            py: 'cpython-3.8'
+            optimizations: 'noopt'
+          - target_triple: 'aarch64-unknown-linux-gnu'
+            py: 'cpython-3.8'
+            optimizations: 'lto'
+
           - target_triple: 'aarch64-unknown-linux-gnu'
             py: 'cpython-3.9'
             optimizations: 'debug'

cpython-unix/static-modules.3.8.aarch64-unknown-linux-gnu

@@ -0,0 +1,37 @@
+# Setup.dist doesn't have entries for all modules. This file defines
+# what's missing. The content here is reconstructed from logic in
+# setup.py and what was observed to execute in a normal build via setup.py.
+# We should audit this every time we upgrade CPython.
+
+_bz2 _bz2module.c -lbz2
+_crypt _cryptmodule.c -lcrypt
+_ctypes _ctypes/_ctypes.c _ctypes/callbacks.c _ctypes/callproc.c _ctypes/stgdict.c _ctypes/cfield.c -DHAVE_FFI_PREP_CIF_VAR=1 -DHAVE_FFI_PREP_CLOSURE_LOC=1 -DHAVE_FFI_CLOSURE_ALLOC=1 -I/tools/deps/include -L/tools/deps/lib -lffi -ldl
+_ctypes_test _ctypes/_ctypes_test.c -lm
+_curses _cursesmodule.c -DHAVE_NCURSESW=1 -I/tools/deps/include/ncursesw -L/tools/deps/lib -lncursesw
+_curses_panel _curses_panel.c -DHAVE_NCURSESW=1 -I/tools/deps/include/ncursesw -L/tools/deps/lib -lpanelw -lncursesw
+_dbm _dbmmodule.c -DHAVE_BERKDB_H -DDB_DBM_HSEARCH -I/tools/deps/include -L/tools/deps/lib -ldb
+_decimal _decimal/_decimal.c _decimal/libmpdec/basearith.c _decimal/libmpdec/constants.c _decimal/libmpdec/context.c _decimal/libmpdec/convolute.c _decimal/libmpdec/crt.c _decimal/libmpdec/difradix2.c _decimal/libmpdec/fnt.c _decimal/libmpdec/fourstep.c _decimal/libmpdec/io.c _decimal/libmpdec/memory.c _decimal/libmpdec/mpdecimal.c _decimal/libmpdec/numbertheory.c _decimal/libmpdec/sixstep.c _decimal/libmpdec/transpose.c -DCONFIG_64=1 -DANSI=1 -DHAVE_UINT128_T=1 -IModules/_decimal/libmpdec
+_elementtree _elementtree.c -DHAVE_EXPAT_CONFIG_H=1 -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI -IModules/expat
+_gdbm _gdbmmodule.c -DHAVE_NDBM_H -I/tools/deps/include -L/tools/deps/lib -lgdbm
+_hashlib _hashopenssl.c -I/tools/deps/include -L/tools/deps/lib -lssl -lcrypto
+_json _json.c
+_lsprof _lsprof.c rotatingtree.c
+_lzma _lzmamodule.c -I/tools/deps/include -L/tools/deps/lib -llzma
+# TODO check setup.py logic for semaphore.c and possibly fix missing
+# dependency.
+_multiprocessing _multiprocessing/multiprocessing.c _multiprocessing/semaphore.c
+_opcode _opcode.c
+_posixshmem _multiprocessing/posixshmem.c -IModules/_multiprocessing -lrt
+_queue _queuemodule.c
+_sqlite3 _sqlite/cache.c _sqlite/connection.c _sqlite/cursor.c _sqlite/microprotocols.c _sqlite/module.c _sqlite/prepare_protocol.c _sqlite/row.c _sqlite/statement.c _sqlite/util.c -I/tools/deps/include -IModules/_sqlite -DMODULE_NAME=\"sqlite3\" -L/tools/deps/lib -lsqlite3
+_ssl _ssl.c -I/tools/deps/include -lssl -lcrypto
+_tkinter _tkinter.c tkappinit.c -DWITH_APPINIT -I/tools/deps/include/X11 -L/tools/deps/lib -ltcl8.6 -ltk8.6 -lX11 -lxcb -lXau
+_uuid _uuidmodule.c -I/tools/deps/include/uuid -luuid
+ossaudiodev ossaudiodev.c
+pyexpat pyexpat.c expat/xmlparse.c expat/xmlrole.c expat/xmltok.c -DHAVE_EXPAT_CONFIG_H=1 -DXML_POOR_ENTROPY=1 -DUSE_PYEXPAT_CAPI -IModules/expat
+# readline variant needs to come first because libreadline is in /tools/deps and is
+# picked up by build. We /could/ make libedit first. But since we employ a hack to
+# coerce use of libedit on Linux, it seems prudent for the build system to pick
+# up readline.
+readline VARIANT=readline readline.c -I/tools/deps/include -I/tools/deps/include/ncursesw -L/tools/deps/lib -lreadline -lncursesw
+readline VARIANT=libedit readline-libedit.c -DUSE_LIBEDIT=1 -I/tools/deps/libedit/include -I/tools/deps/libedit/include/ncursesw -L/tools/deps/libedit/lib -ledit -lncursesw

cpython-unix/targets.yml

@@ -135,6 +135,7 @@ aarch64-unknown-linux-gnu:
   host_platforms:
     - linux64
   pythons_supported:
+    - '3.8'
     - '3.9'
     - '3.10'
   docker_image_suffix: .cross