[MacPorts] #67125: ccache fails to build on 10.5

[MacPorts]

#67125: ccache fails to build on 10.5
----------------------+--------------------
 Reporter:  rmottola  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  leopard   |       Port:  ccache
----------------------+--------------------
 compilation with clang 7.0


 {{{
 Run Build Command(s):/usr/bin/make -f Makefile cmTC_b4223/fast &&
 /usr/bin/make  -f CMakeFiles/cmTC_b4223.dir/build.make
 CMakeFiles/cmTC_b4223.dir/build
 Building CXX object CMakeFiles/cmTC_b4223.dir/src.cxx.o
 /opt/local/bin/clang++-mp-7.0 -Dstd_filesystem_without_libfs  -pipe -Os
 -DNDEBUG -isystem/opt/local/include/LegacySupport -I/opt/local/include
 -stdlib=macports-libstdc++ -D_GLIBCXX_USE_CXX11_ABI=0  -arch x86_64
 -mmacosx-version-min=10.5 -std=c++17 -MD -MT
 CMakeFiles/cmTC_b4223.dir/src.cxx.o -MF
 CMakeFiles/cmTC_b4223.dir/src.cxx.o.d -o
 CMakeFiles/cmTC_b4223.dir/src.cxx.o -c
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_ccache/ccache/work/build/CMakeFiles/CMakeTmp/src.cxx
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_ccache/ccache/work/build/CMakeFiles/CMakeTmp/src.cxx:1:14:
 fatal error: 'filesystem' file not found
     #include <filesystem>
              ^~~~~~~~~~~~
 1 error generated.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/67125>
MacPorts <https://www.macports.org/>
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