Cannot build with CMAKE_OSX_DEPLOYMENT_TARGET=10.14 #1185
Description
I am trying to build an updated version of openPMD_api with this build script. Note that openPMD now requires C++17, and requires on macOS the option -mmacosx_version_min=10.14 to enable certain C++17 features in libc++.
I am using the current master branch of Yggdrasil.
This works fine on Linux. On macOS the build fails with undefined symbols:
Undefined symbols for architecture x86_64:
"__ZNSt19bad_optional_accessD1Ev", referenced from:
__ZNSt3__127__throw_bad_optional_accessEv in ReadIterations.cpp.o
__ZNSt3__127__throw_bad_optional_accessEv in Series.cpp.o
__ZNSt3__127__throw_bad_optional_accessEv in WriteIterations.cpp.o
__ZNSt3__127__throw_bad_optional_accessEv in JSON.cpp.o
__ZNSt3__127__throw_bad_optional_accessEv in JSONIOHandlerImpl.cpp.o
__ZNSt3__127__throw_bad_optional_accessEv in ADIOS2IOHandler.cpp.o
"__ZTISt18bad_variant_access", referenced from:
__ZNSt3__126__throw_bad_variant_accessEv in Iteration.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in Mesh.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in Record.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in RecordComponent.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in Series.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in Attributable.cpp.o
__ZNSt3__126__throw_bad_variant_accessEv in BaseRecordComponent.cpp.o
...
These missing symbols are e.g. vtable for std::bad_optional_access or std::__1::__throw_bad_optional_access(), which should definitely be defined in libc++. I thus think that this might be a problem with the build environment provided by BinaryBuilder and not with my build script, or with openPMD_api's build system.
I tried to look into the libc++ in the BinaryBuilder cross-compilation environment, and found that these libraries are just empty shells, presumably just defining which symbols are exported. Could it be that these export lists are missing the symbols above?