[MacPorts] #64116: libarchive fails on macOS 10.6

[MacPorts]

#64116: libarchive fails on macOS 10.6
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 Reporter:  catap   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:
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 {{{
 L/opt/local/lib /opt/local/lib/libiconv.dylib /opt/local/lib/liblzo2.dylib
 /opt/local/lib/liblzma.dylib -lzstd -llz4 /opt/local/lib/libcharset.dylib
 /opt/local/lib/libb2.dylib -lbz2 -lz /opt/local/lib/libxml2.dylib  -Os
 -arch i386 -Wl,-headerpad_max_install_names -arch i386   -pthread -fopenmp
 -install_name  /opt/local/lib/libarchive.13.dylib -compatibility_version
 19 -current_version 19.2 -Wl,-single_module
 clang: warning: argument unused during compilation: '-pthread'
 ld: library not found for -lgomp
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 make[1]: *** [libarchive.la] Error 1
 make[1]: Leaving directory
 `/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_archivers_libarchive/libarchive/work/libarchive-3.5.2'
 make: *** [all] Error 2
 make: Leaving directory
 `/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_archivers_libarchive/libarchive/work/libarchive-3.5.2'
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_archivers_libarchive/libarchive/work/libarchive-3.5.2"
 && /usr/bin/make -j4 -w all
 Exit code: 2
 }}}

 https://build.macports.org/builders/ports-10.6_i386-builder/builds/46512/steps
 /install-port/logs/stdio

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Ticket URL: <https://trac.macports.org/ticket/64116>
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