https://sqlite.org/forum/forumpost/c3f1b5213a
--- a/config.guess	2024-01-31
+++ b/config.guess	2024-01-31
@@ -1425,7 +1425,7 @@
 		esac
 	    fi
 	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
-	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+	    if (echo '#ifdef __ppc__'; echo IS_PPC; echo '#endif') | \
 		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
 		   grep IS_PPC >/dev/null
 	    then

--- a/src/tclsqlite.c	2024-01-31
+++ b/src/tclsqlite.c	2024-01-31
@@ -65,7 +65,7 @@
 #     define SQLITE_PTRSIZE __SIZEOF_POINTER__
 #   elif defined(i386)     || defined(__i386__)   || defined(_M_IX86) ||    \
          defined(_M_ARM)   || defined(__arm__)    || defined(__x86)   ||    \
-        (defined(__APPLE__) && defined(__POWERPC__)) ||                     \
+        (defined(__APPLE__) && defined(__ppc__)) ||                         \
         (defined(__TOS_AIX__) && !defined(__64BIT__))
 #     define SQLITE_PTRSIZE 4
 #   else