[3.12] gh-112302: Backport SBOM generation tooling (#114730)

[3.12] Backport SBOM generation tooling

Author: sethmlarson

.gitattributes

@@ -80,6 +80,7 @@ Lib/keyword.py                                      generated
 Lib/test/levenshtein_examples.json                  generated
 Lib/test/test_stable_abi_ctypes.py                  generated
 Lib/token.py                                        generated
+Misc/sbom.spdx.json                                 generated
 Objects/typeslots.inc                               generated
 PC/python3dll.c                                     generated
 Parser/parser.c                                     generated

.github/CODEOWNERS

@@ -166,3 +166,7 @@ Lib/ast.py                    @isidentical
 
 # zipfile.Path
 **/*zipfile/_path/*           @jaraco
+
+# SBOM
+/Misc/sbom.spdx.json          @sethmlarson
+/Tools/build/generate_sbom.py @sethmlarson

Makefile.pre.in

@@ -1320,7 +1320,7 @@ regen-limited-abi: all
 regen-all: regen-cases regen-opcode regen-opcode-targets regen-typeslots \
 	regen-token regen-ast regen-keyword regen-sre regen-frozen \
 	regen-pegen-metaparser regen-pegen regen-test-frozenmain \
-	regen-test-levenshtein regen-global-objects
+	regen-test-levenshtein regen-global-objects regen-sbom
 	@echo
 	@echo "Note: make regen-stdlib-module-names and make regen-configure should be run manually"
 
@@ -2605,6 +2605,10 @@ autoconf:
 regen-configure:
 	$(srcdir)/Tools/build/regen-configure.sh
 
+.PHONY: regen-sbom
+regen-sbom:
+	$(PYTHON_FOR_REGEN) $(srcdir)/Tools/build/generate_sbom.py
+
 # Create a tags file for vi
 tags::
 	ctags -w $(srcdir)/Include/*.h $(srcdir)/Include/cpython/*.h $(srcdir)/Include/internal/*.h