[MacPorts] #67446: pika is stubbornly broken with Clang on 1

[MacPorts]

#67446: pika is stubbornly broken with Clang on 1
--------------------------+--------------------
 Reporter:  barracuda156  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:  x86_64        |       Port:  pika
--------------------------+--------------------
 It was failing before due to missing `filesystem`. After adding a setting
 to use `legacysupport` for Macports `libcxx`, it began failing on
 configure with atomics checks:

 {{{
 -- The CXX compiler identification is AppleClang 10.0.1.10010046
 -- Detecting CXX compiler ABI info
 -- Detecting CXX compiler ABI info - done
 -- Check for working CXX compiler: /opt/local/bin/mpicxx-mpich-mp -
 skipped
 -- Detecting CXX compile features
 -- Detecting CXX compile features - done
 -- Using C++17
 -- CMake version: 3.24.4
 -- pika version: 0.15.0
 -- Nice threadlevel is disabled.
 -- Stack traces are enabled.
 -- Compiling with the native toolset
 -- Performing Test PIKA_WITH_CXX11_ATOMIC - Failed
 -- Performing Test PIKA_WITH_CXX11_ATOMIC (with -latomic) - Failed
 -- Test failed, detailed output:

 Change Dir:
 /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_devel_pika/pika/work/build/CMakeFiles/config_tests/CMakeFiles/CMakeTmp

 Run Build Command(s):/usr/bin/make -f Makefile cmTC_5c78e/fast &&
 /Library/Developer/CommandLineTools/usr/bin/make  -f
 CMakeFiles/cmTC_5c78e.dir/build.make CMakeFiles/cmTC_5c78e.dir/build
 Building CXX object CMakeFiles/cmTC_5c78e.dir/cxx11_std_atomic.cpp.o
 /opt/local/bin/mpicxx-mpich-mp   -pipe
 -I/opt/local/libexec/boost/1.81/include -Os -DNDEBUG
 -isystem/opt/local/include/libcxx/v1 -nostdinc++
 -isystem/opt/local/include/LegacySupport
 -I/opt/local/libexec/boost/1.81/include -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -Werror
 -arch x86_64 -isysroot
 /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -mmacosx-version-
 min=10.14 -std=c++17 -MD -MT
 CMakeFiles/cmTC_5c78e.dir/cxx11_std_atomic.cpp.o -MF
 CMakeFiles/cmTC_5c78e.dir/cxx11_std_atomic.cpp.o.d -o
 CMakeFiles/cmTC_5c78e.dir/cxx11_std_atomic.cpp.o -c
 /opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_devel_pika/pika/work/pika-0.15.0/cmake/tests/cxx11_std_atomic.cpp
 Linking CXX executable cmTC_5c78e
 /opt/local/bin/cmake -E cmake_link_script
 CMakeFiles/cmTC_5c78e.dir/link.txt --verbose=1
 /opt/local/bin/mpicxx-mpich-mp -pipe
 -I/opt/local/libexec/boost/1.81/include -Os -DNDEBUG
 -isystem/opt/local/include/libcxx/v1 -nostdinc++
 -isystem/opt/local/include/LegacySupport
 -I/opt/local/libexec/boost/1.81/include -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -Werror
 -arch x86_64 -isysroot
 /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -mmacosx-version-
 min=10.14 -Wl,-search_paths_first -Wl,-headerpad_max_install_names
 -L/opt/local/libexec/boost/1.81/lib -Wl,-headerpad_max_install_names
 -L/opt/local/lib -lMacportsLegacySupport -L/opt/local/lib/libcxx
 -Wl,-rpath,/opt/local/lib/libgcc
 -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk
 CMakeFiles/cmTC_5c78e.dir/cxx11_std_atomic.cpp.o -o cmTC_5c78e  -latomic
 clang: error: argument unused during compilation: '-nostdinc++' [-Werror
 ,-Wunused-command-line-argument]
 make[1]: *** [cmTC_5c78e] Error 1
 make: *** [cmTC_5c78e/fast] Error 2


 CMake Error at cmake/pika_message.cmake:51 (message):
   pika needs support for C++11 std::atomic
 Call Stack (most recent call first):
   cmake/pika_add_config_test.cmake:234 (pika_error)
   cmake/pika_add_config_test.cmake:298 (pika_add_config_test)
   cmake/pika_perform_cxx_feature_tests.cmake:15
 (pika_check_for_cxx11_std_atomic)
   CMakeLists.txt:1076 (pika_perform_cxx_feature_tests)


 -- Configuring incomplete, errors occurred!
 }}}

 It builds fine on 10.6.8 for `ppc` :)

-- 
Ticket URL: <https://trac.macports.org/ticket/67446>
MacPorts <https://www.macports.org/>
Ports system for macOS