[MacPorts] #65179: py-libxml2: need to either blacklist gcc-4* or patch out -Wno-unused-result

[MacPorts]

#65179: py-libxml2: need to either blacklist gcc-4* or patch out -Wno-unused-result
-------------------------------------+-------------------------------------
 Reporter:  barracuda156             |      Owner:  MarcusCalhoun-Lopez
     Type:  defect                   |     Status:  assigned
 Priority:  Normal                   |  Milestone:
Component:  ports                    |    Version:  2.7.2
 Keywords:  powerpc, leopard,        |       Port:  py39-libxml2,
  snowleopard, rosetta               |  py310-libxml2
-------------------------------------+-------------------------------------
 `gcc-4.2` does not understand this flag, and the build fails.

 {{{
 creating build/temp.macosx-10.6-ppc-cpython-310
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 libxml2/py310-libxml2/work/compwrap/cc/usr/bin/gcc-4.2 -Wno-unused-result
 -Wsign-compare -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -pipe
 -Os -arch ppc -isysroot/ -D_REENTRANT=1 -I/opt/local/include/libxml2
 -I/opt/local/Library/Frameworks/Python.framework/Versions/3.10/include/python3.10
 -c libxml.c -o build/temp.macosx-10.6-ppc-cpython-310/libxml.o
 cc1: error: unrecognized command line option "-Wno-unused-result"
 error: command
 '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 libxml2/py310-libxml2/work/compwrap/cc/usr/bin/gcc-4.2' failed with exit
 code 1
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 libxml2/py310-libxml2/work/libxml2-2.9.14/python" &&
 /opt/local/Library/Frameworks/Python.framework/Versions/3.10/bin/python3.10
 setup.py --no-user-cfg build -j4
 Exit code: 1
 Error: Failed to build py310-libxml2: command execution failed
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/65179>
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