Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -249,7 +249,7 @@ VERSION=PYTHON_VERSION
 
 # Version number of Python's own shared library file.
 AC_SUBST(SOVERSION)
-SOVERSION=1.0
+SOVERSION=${LIBpython3.11_VERSION}
 
 # The later definition of _XOPEN_SOURCE and _POSIX_C_SOURCE disables
 # certain features on NetBSD, so we need _NETBSD_SOURCE to re-enable
@@ -645,7 +645,7 @@ case $ac_sys_system/$ac_sys_release in
     # As this has a different meaning on Linux, only define it on OpenBSD
     AC_DEFINE(_BSD_SOURCE, 1, [Define on OpenBSD to activate all library features])
     ;;
-  OpenBSD/*)
+  OpenBSD/* | SecBSD/*)
     # OpenBSD undoes our definition of __BSD_VISIBLE if _XOPEN_SOURCE is
     # also defined. This can be overridden by defining _BSD_SOURCE
     # As this has a different meaning on Linux, only define it on OpenBSD
@@ -1104,6 +1104,7 @@ AC_MSG_CHECKING([for multiarch])
 AS_CASE([$ac_sys_system],
   [Darwin*], [MULTIARCH=""],
   [FreeBSD*], [MULTIARCH=""],
+  [SecBSD*], [MULTIARCH=""],
   [MULTIARCH=$($CC --print-multiarch 2>/dev/null)]
 )
 AC_SUBST([MULTIARCH])
@@ -1493,7 +1494,7 @@ if test $enable_shared = "yes"; then
 	      PY3LIBRARY=libpython3.so
 	  fi
           ;;
-    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*|VxWorks*)
+    Linux*|GNU*|NetBSD*|FreeBSD*|DragonFly*|OpenBSD*|SecBSD*|VxWorks*)
 	  LDLIBRARY='libpython$(LDVERSION).so'
 	  BLDLIBRARY='-L. -lpython$(LDVERSION)'
 	  RUNSHARED=LD_LIBRARY_PATH=`pwd`${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
@@ -1843,13 +1844,13 @@ esac
 [AC_MSG_RESULT(no)])
 if test "$Py_LTO" = 'true' ; then
   case $CC in
-    *clang*)
+    *clang*|cc)
       LDFLAGS_NOLTO="-fno-lto"
       dnl Clang linker requires -flto in order to link objects with LTO information.
       dnl Thin LTO is faster and works for object files with full LTO information, too.
       AX_CHECK_COMPILE_FLAG([-flto=thin],[LDFLAGS_NOLTO="-flto=thin"],[LDFLAGS_NOLTO="-flto"])
       AC_SUBST(LLVM_AR)
-      AC_PATH_TOOL(LLVM_AR, llvm-ar, '', ${llvm_path})
+      AC_PATH_TOOL(LLVM_AR, ar, '', ${llvm_path})
       AC_SUBST(LLVM_AR_FOUND)
       if test -n "${LLVM_AR}" -a -x "${LLVM_AR}"
       then
@@ -1964,7 +1965,7 @@ then
 fi
 LLVM_PROF_ERR=no
 case $CC in
-  *clang*)
+  *clang*|cc)
     # Any changes made here should be reflected in the GCC+Darwin case below
     PGO_PROF_GEN_FLAG="-fprofile-instr-generate"
     PGO_PROF_USE_FLAG="-fprofile-instr-use=code.profclangd"
@@ -3193,7 +3194,7 @@ then
 		else
 			LDSHARED="ld -Bshareable"
 		fi;;
-	OpenBSD*)
+	OpenBSD* | SecBSD*)
 		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
 		then
 				LDSHARED='$(CC) -shared $(CCSHARED)'
@@ -3269,7 +3270,7 @@ then
 		AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
 			CCSHARED="-fPIC"
 		]);;
-	FreeBSD*|NetBSD*|OpenBSD*|DragonFly*) CCSHARED="-fPIC";;
+	FreeBSD*|NetBSD*|OpenBSD*|SecBSD*|DragonFly*) CCSHARED="-fPIC";;
 	Haiku*) CCSHARED="-fPIC";;
 	OpenUNIX*|UnixWare*)
 		if test "$GCC" = "yes"
@@ -3326,7 +3327,7 @@ then
 	OpenUNIX*|UnixWare*) LINKFORSHARED="-Wl,-Bexport";;
 	SCO_SV*) LINKFORSHARED="-Wl,-Bexport";;
 	ReliantUNIX*) LINKFORSHARED="-W1 -Blargedynsym";;
-	FreeBSD*|NetBSD*|OpenBSD*|DragonFly*)
+	FreeBSD*|NetBSD*|OpenBSD*|SecBSD*|DragonFly*)
 		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
 		then
 			LINKFORSHARED="-Wl,--export-dynamic"
@@ -3888,11 +3889,7 @@ dnl Detect Tcl/Tk. Use pkg-config if available.
 dnl
 found_tcltk=no
 for _QUERY in \
-  "tcl >= 8.5.12 tk >= 8.5.12" \
-  "tcl8.6 tk8.6" \
   "tcl86 tk86" \
-  "tcl8.5 >= 8.5.12 tk8.5 >= 8.5.12" \
-  "tcl85 >= 8.5.12 tk85 >= 8.5.12" \
 ; do
   PKG_CHECK_EXISTS([$_QUERY], [
     PKG_CHECK_MODULES([TCLTK], [$_QUERY], [found_tcltk=yes], [found_tcltk=no])