[MacPorts] #67723: libxc6: build fails for PPC

[MacPorts]

#67723: libxc6: build fails for PPC
--------------------------+--------------------
 Reporter:  barracuda156  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:  powerpc       |       Port:  libxc6
--------------------------+--------------------
 Reason is unclear so far.

 {{{
 libtool: link: /opt/local/bin/gcc-mp-12 -pipe -Os -arch ppc
 -Wl,-headerpad_max_install_names -Wl,-rpath -Wl,/opt/local/lib/libgcc
 -arch ppc -o xc-consistency xc_consistency-xc-consistency.o
 -L/opt/local/lib -L../src/ /opt/local/lib/libxc.a -lm
 Undefined symbols:
   "_libxc_free", referenced from:
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _free_memory in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
       _drop_laplacian in xc_regression-xc-regression.o
 Undefined symbols:
   "_xc_mgga_vars_free_all", referenced from:
       _main in xc_get_data-xc-get_data.o
   "_xc_mgga_vars_allocate_all", referenced from:
       _main in xc_get_data-xc-get_data.o
   "_xc_mgga_evaluate_functional", referenced from:
       _main in xc_get_data-xc-get_data.o
 ld: symbol(s) not found
 collect2: error: ld returned 1 exit status
 ld: symbol(s) not found
 collect2: error: ld returned 1 exit status
 make[3]: *** [xc-regression] Error 1
 make[3]: *** Waiting for unfinished jobs....
 make[3]: *** [xc-get_data] Error 1
 make[3]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_libxc6/libxc6/work/libxc-6.2.2/testsuite'
 make[2]: *** [all-recursive] Error 1
 }}}

 Ref from: #67715

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Ticket URL: <https://trac.macports.org/ticket/67723>
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