Python312 @3.12.3_0 has a failure during configure phase on PPC Leopard, Mac OS X 10.5.8

[ballapete (Peter "Pete" Dyballa)]

Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_lang_python312/python312/work/Python-3.12.3" && ./configure --prefix=/opt/local --enable-framework=/opt/local/Library/Frameworks --enable-ipv6 --enable-loadable-sqlite-extensions --with-computed-gotos --with-ensurepip=no --with-readline=editline --with-system-expat --with-dbmliborder=ndbm:bdb 
checking build system type... powerpc-apple-darwin9.8.0
checking host system type... powerpc-apple-darwin9.8.0
checking for Python interpreter freezing... ./_bootstrap_python
checking for python3.12... no
checking for python3.12... no
checking for python3.11... python3.11
checking Python for regen version... Python 3.11.9
checking for pkg-config... /opt/local/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes 
checking for --enable-universalsdk... no
checking for --with-universal-archs... no
checking MACHDEP... "darwin"
checking for xcrun... yes 
checking macOS SDKROOT... xcrun: error: unrecognized option: --show-sdk-path

usage: 
xcrun [-verbose] [-no-cache] [-sdk <sdkroot>] [-log] [-run] <utility> [argument ...]
xcrun [-verbose] [-no-cache] [-sdk <sdkroot>] -find <utility> 
<tool> [tool arguments ...]

checking for gcc... /opt/local/bin/gcc-mp-7
checking whether the C compiler works... yes

On this old system xcode-select -print-path might be useful – although it only return /Developer. Therein are the searched for directories:

pete 250 /\ l /Developer/SDKs/
insgesamt 0
drwxr-xr-x 6 root wheel 238 24. Mär 2009  MacOSX10.4u.sdk
drwxr-xr-x 6 root wheel 238  7. Aug 2009  MacOSX10.5.sdk

Build proceeds.