macos - failure with xcode headers "Libc++ only supports Clang 16 and later"

[sean-parent]

It looks like the supplied version of cling doesn't work with new XCode headers. I tried pulling the MacOSX10.9.sdk from Xcode 5.1.1 (the version that I believe cling was built against) and setting CPLUS_INCLUDE_PATH to point to the include director, but I got the same error. I can't use xcode-select on that old an Xcode version.

Has anyone been able to get this going on macOS recently? I'm running on an Intel macOS 15.3, Xcode 16.2. Is there a way to point xeus-cling and a particular set of libcxx headers?

Failed to start the Kernel. 
registering handler for SIGSEGV
In file included from input_line_1:1:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/new:89:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assert:13:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assertion_handler:13:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__config:48:8: warning: "Libc++ only supports Clang 16 and later" [-W#warnings]
#      warning "Libc++ only supports Clang 16 and later"
       ^
In file included from input_line_1:1:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/new:89:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assert:13:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assertion_handler:14:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__verbose_abort:20:1: error: expected identifier or '{'
_LIBCPP_BEGIN_NAMESPACE_STD
^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__config:901:81: note: expanded from macro '_LIBCPP_BEGIN_NAMESPACE_STD'
#  define _LIBCPP_BEGIN_NAMESPACE_STD namespace _LIBCPP_TYPE_VISIBILITY_DEFAULT std {                                  \
                                                                                ^
In file included from input_line_1:1:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/new:89:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assert:13:
In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__assertion_handler:14:
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__verbose_abort:20:1: error: C++ requires a type specifier for all declarations
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__config:901:81: note: expanded from macro '_LIBCPP_BEGIN_NAMESPACE_STD'
...
6   libxeus-cling.0.15.0.dylib          0x00000001072015ec _ZN5clang19RecursiveASTVisitorIN12_GLOBAL__N_120PointerCheckInjectorEE16TraverseDeclStmtEPNS_8DeclStmtEPN4llvm15SmallVectorImplINS6_14PointerIntPairIPNS_4StmtELj1EbNS6_21PointerLikeTypeTraitsISA_EENS6_18PointerIntPairInfoISA_Lj1ESC_EEEEEE + 108
7   libxeus-cling.0.15.0.dylib          0x00000001071fd048 _ZN5clang19RecursiveASTVisitorIN12_GLOBAL__N_120PointerCheckInjectorEE12TraverseStmtEPNS_4StmtEPN4llvm15SmallVectorImplINS6_14PointerIntPairIS5_Lj1EbNS6_21PointerLikeTypeTraitsIS5_EENS6_18PointerIntPairInfoIS5_Lj1ESA_EEEEEE + 6840
8   libxeus-cling.0.15.0.dylib          0x0000000107211db7 _ZN5clang19RecursiveASTVisitorIN12_GLOBAL__N_120PointerCheckInjectorEE22TraverseFunctionHelperEPNS_12FunctionDeclE + 567
9   libxeus-cling.0.15.0.dylib          0x00000001071f6987 _ZN5clang19RecursiveASTVisitorIN12_GLOBAL__N_120PointerCheckInjectorEE12TraverseDeclEPNS_4DeclE + 903. 
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