Error in executing a macro - Mac OS issue it seems

Mansi · December 9, 2021, 8:14am

Hello,

Im trying to execute a macro, but it gives me the following error.

root [0] .x th22mamaR.C+("test.m")
Info in <TMacOSXSystem::ACLiC>: creating shared library /Users/mansisaxena/60GaBetaDecay/MAMA_analysis/./th22mamaR_C.so
warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk'
In file included from input_line_1:1:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/new:90:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/exception:81:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstdlib:85:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stdlib.h:93:
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stdlib.h:8:15: fatal error: 'stdlib.h' file not found
#include_next <stdlib.h>
              ^~~~~~~~~~
In file included from input_line_3:1:
In file included from /Users/mansisaxena/build_6.18/include/RtypesCore.h:25:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stddef.h:45:
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:51:9: error: unknown type name '__PTRDIFF_TYPE__'
typedef __PTRDIFF_TYPE__ ptrdiff_t;
        ^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:62:9: error: unknown type name '__SIZE_TYPE__'
typedef __SIZE_TYPE__ size_t;
        ^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:90:9: error: unknown type name '__WCHAR_TYPE__'
typedef __WCHAR_TYPE__ wchar_t;
        ^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:90:24: error: expected unqualified-id
typedef __WCHAR_TYPE__ wchar_t;
                       ^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:639:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:46:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:47:1: error: unknown type name '_LIBCPP_BEGIN_NAMESPACE_STD'
_LIBCPP_BEGIN_NAMESPACE_STD
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:49:1: error: expected unqualified-id
using ::ptrdiff_t;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:53:9: error: no member named 'max_align_t' in the global namespace
using ::max_align_t;
      ~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:63:50: error: use of undeclared identifier 'char8_t'
template <>          struct __libcpp_is_integral<char8_t>            { enum { value = 1 }; };
                                                 ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:82:1: error: unknown type name '_LIBCPP_END_NAMESPACE_STD'
_LIBCPP_END_NAMESPACE_STD
^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:639:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:52:1: error: expected unqualified-id
namespace std  // purposefully not versioned
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:60:5: error: expected expression
    const _Ep* __begin_;
    ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:58:28: error: variable has incomplete type 'class _LIBCPP_TEMPLATE_VIS'
class _LIBCPP_TEMPLATE_VIS initializer_list
                           ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:58:7: note: forward declaration of 'std::_LIBCPP_TEMPLATE_VIS'
class _LIBCPP_TEMPLATE_VIS initializer_list
      ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:96:8: error: unknown type name '_LIBCPP_INLINE_VISIBILITY'
inline _LIBCPP_INLINE_VISIBILITY
       ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:97:30: error: expected ';' at end of declaration
_LIBCPP_CONSTEXPR_AFTER_CXX11
                             ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:98:7: error: unknown type name '_Ep'
const _Ep*
      ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:24: error: use of undeclared identifier '_Ep'
begin(initializer_list<_Ep> __il) _NOEXCEPT
                       ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:24: error: use of undeclared identifier '_Ep'
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:35: error: expected function body after function declarator
begin(initializer_list<_Ep> __il) _NOEXCEPT
                                  ^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:640:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:424:1: error: unknown type name '_LIBCPP_BEGIN_NAMESPACE_STD'
_LIBCPP_BEGIN_NAMESPACE_STD
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
0  libCling.so              0x000000010ba57715 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1  libCling.so              0x000000010ba57d76 SignalHandler(int) + 598
2  libsystem_platform.dylib 0x00007fff203dad7d _sigtramp + 29
3  libsystem_platform.dylib 0x0000000306001ad0 _sigtramp + 3854724464
4  libCling.so              0x0000000109bd3ad1 ROOT::TMetaUtils::TNormalizedCtxtImpl::keepTypedef(cling::LookupHelper const&, char const*, bool) + 65
5  libCling.so              0x0000000109bd4fcc ROOT::TMetaUtils::TNormalizedCtxtImpl::TNormalizedCtxtImpl(cling::LookupHelper const&) + 108
6  libCling.so              0x0000000109bd3648 ROOT::TMetaUtils::TNormalizedCtxt::TNormalizedCtxt(cling::LookupHelper const&) + 40
7  libCling.so              0x0000000109c93c80 TCling::TCling(char const*, char const*, char const* const*) + 9408
8  libCling.so              0x0000000109c8dc05 CreateInterpreter + 53
9  libCore.so               0x00000001101708f6 TROOT::InitInterpreter() + 214
10 libCore.so               0x0000000110170811 ROOT::Internal::GetROOT2() + 33
11 libCling.so              0x0000000109c6bd59 TCling__GetInterpreter + 9
12 libCling.so              0x0000000109c36a03 RootClingMain(int, char**, bool, bool) + 12883
13 libCling.so              0x0000000109c45bad ROOT_rootcling_Driver + 509
14 rootcling                0x0000000100f38f5b main + 155
15 libdyld.dylib            0x00007fff203b1621 start + 1
Stack dump:
0.	Program arguments: /Users/mansisaxena/build_6.18/bin/rootcling -v0 --lib-list-prefix=/Users/mansisaxena/60GaBetaDecay/MAMA_analysis/th22mamaR_C_ACLiC_map -f /Users/mansisaxena/60GaBetaDecay/MAMA_analysis/th22mamaR_C_ACLiC_dict.cxx -I/Users/mansisaxena/build_6.18/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -I/Users/mansisaxena/build_6.18/etc -I/Users/mansisaxena/build_6.18/etc/cling -I/Users/mansisaxena/build_6.18/include -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include -D__ACLIC__ /Users/mansisaxena/60GaBetaDecay/MAMA_analysis/./th22mamaR.C /Users/mansisaxena/60GaBetaDecay/MAMA_analysis/th22mamaR_C_ACLiC_linkdef.h 

 *** Break *** segmentation violation
[/usr/lib/system/libsystem_platform.dylib] _sigtramp (no debug info)
[<unknown binary>] (no debug info)
Error in <ACLiC>: Dictionary generation failed!

thanks in advance.
I really want to solve this issue.

MS

Please read tips for efficient and successful posting and posting code

_ROOT Version:6.18/04
Platform: Mac OS - big Sur 11.2.3
Compiler: Not Provided

couet · December 9, 2021, 8:36am

It seems there is an issue with stdlib. I tried to reproduce it with the following dummy script

#include <cstdlib>
using namespace std;

void stdlibtest()
{
}

it gives:

root [0] .x stdlibtest.C++
Info in <TMacOSXSystem::ACLiC>: creating shared library /Users/couet/roottest/./stdlibtest_C.so
root [1]

Mansi · December 9, 2021, 8:37am

yeah, I think so.
how to correct this ?

MS

couet · December 9, 2021, 8:49am

Does the small script I posted works for you ?
May be try to include:

#include <cstdlib>

instead of:

#include <stdlib>

Mansi · December 9, 2021, 10:00am

sorry, this gives error:

root [0] .x stdlibtest.C++
Info in TMacOSXSystem::ACLiC: creating shared library /Users/mansisaxena/60GaBetaDecay/Root-Files-B/./stdlibtest_C.so
warning: no such sysroot directory: ‘/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk’
In file included from input_line_1:1:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/new:90:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/exception:81:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstdlib:85:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stdlib.h:93:
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stdlib.h:8:15: fatal error: ‘stdlib.h’ file not found
#include_next <stdlib.h>
^~~~~~~~~~
In file included from input_line_3:1:
In file included from /Users/mansisaxena/build_6.18/include/RtypesCore.h:25:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stddef.h:45:
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:51:9: error: unknown type name ‘PTRDIFF_TYPE’
typedef PTRDIFF_TYPE ptrdiff_t;
^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:62:9: error: unknown type name ‘SIZE_TYPE’
typedef SIZE_TYPE size_t;
^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:90:9: error: unknown type name ‘WCHAR_TYPE’
typedef WCHAR_TYPE wchar_t;
^
/Users/mansisaxena/build_6.18/etc/cling/lib/clang/5.0.0/include/stddef.h:90:24: error: expected unqualified-id
typedef WCHAR_TYPE wchar_t;
^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:639:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:46:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:47:1: error: unknown type name ‘_LIBCPP_BEGIN_NAMESPACE_STD’
_LIBCPP_BEGIN_NAMESPACE_STD
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:49:1: error: expected unqualified-id
using ::ptrdiff_t;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:53:9: error: no member named ‘max_align_t’ in the global namespace
using ::max_align_t;
~~^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:63:50: error: use of undeclared identifier ‘char8_t’
template <> struct __libcpp_is_integral<char8_t> { enum { value = 1 }; };
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstddef:82:1: error: unknown type name ‘_LIBCPP_END_NAMESPACE_STD’
_LIBCPP_END_NAMESPACE_STD
^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:639:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:52:1: error: expected unqualified-id
namespace std // purposefully not versioned
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:60:5: error: expected expression
const _Ep* _begin;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:58:28: error: variable has incomplete type ‘class _LIBCPP_TEMPLATE_VIS’
class _LIBCPP_TEMPLATE_VIS initializer_list
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:58:7: note: forward declaration of ‘std::_LIBCPP_TEMPLATE_VIS’
class _LIBCPP_TEMPLATE_VIS initializer_list
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:96:8: error: unknown type name ‘_LIBCPP_INLINE_VISIBILITY’
inline _LIBCPP_INLINE_VISIBILITY
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:97:30: error: expected ‘;’ at end of declaration
_LIBCPP_CONSTEXPR_AFTER_CXX11
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:98:7: error: unknown type name ‘_Ep’
const _Ep*
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:24: error: use of undeclared identifier ‘_Ep’
begin(initializer_list<_Ep> __il) _NOEXCEPT
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:24: error: use of undeclared identifier ‘_Ep’
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/initializer_list:99:35: error: expected function body after function declarator
begin(initializer_list<_Ep> __il) _NOEXCEPT
^
In file included from input_line_3:2:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:640:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/type_traits:424:1: error: unknown type name ‘_LIBCPP_BEGIN_NAMESPACE_STD’
_LIBCPP_BEGIN_NAMESPACE_STD
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
0 libCling.so 0x000000010cd7f715 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
1 libCling.so 0x000000010cd7fd76 SignalHandler(int) + 598
2 libsystem_platform.dylib 0x00007fff203dad7d sigtramp + 29
3 libsystem_platform.dylib 0x000000030887cad0 sigtramp + 3897171312
4 libCling.so 0x000000010aefbad1 ROOT::TMetaUtils::TNormalizedCtxtImpl::keepTypedef(cling::LookupHelper const&, char const*, bool) + 65
5 libCling.so 0x000000010aefcfcc ROOT::TMetaUtils::TNormalizedCtxtImpl::TNormalizedCtxtImpl(cling::LookupHelper const&) + 108
6 libCling.so 0x000000010aefb648 ROOT::TMetaUtils::TNormalizedCtxt::TNormalizedCtxt(cling::LookupHelper const&) + 40
7 libCling.so 0x000000010afbbc80 TCling::TCling(char const*, char const*, char const* const*) + 9408
8 libCling.so 0x000000010afb5c05 CreateInterpreter + 53
9 libCore.so 0x00000001114988f6 TROOT::InitInterpreter() + 214
10 libCore.so 0x0000000111498811 ROOT::Internal::GetROOT2() + 33
11 libCling.so 0x000000010af93d59 TCling__GetInterpreter + 9
12 libCling.so 0x000000010af5ea03 RootClingMain(int, char**, bool, bool) + 12883
13 libCling.so 0x000000010af6dbad ROOT_rootcling_Driver + 509
14 rootcling 0x0000000102260f5b main + 155
15 libdyld.dylib 0x00007fff203b1621 start + 1
Stack dump:
0. Program arguments: /Users/mansisaxena/build_6.18/bin/rootcling -v0 --lib-list-prefix=/Users/mansisaxena/60GaBetaDecay/Root-Files-B/stdlibtest_C_ACLiC_map -f /Users/mansisaxena/60GaBetaDecay/Root-Files-B/stdlibtest_C_ACLiC_dict.cxx -I/Users/mansisaxena/build_6.18/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -I/Users/mansisaxena/build_6.18/etc -I/Users/mansisaxena/build_6.18/etc/cling -I/Users/mansisaxena/build_6.18/include -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include -D__ACLIC /Users/mansisaxena/60GaBetaDecay/Root-Files-B/./stdlibtest.C /Users/mansisaxena/60GaBetaDecay/Root-Files-B/stdlibtest_C_ACLiC_linkdef.h

*** Break *** segmentation violation
[/usr/lib/system/libsystem_platform.dylib] _sigtramp (no debug info)
[] (no debug info)
Error in : Dictionary generation failed!
root [1]

couet · December 9, 2021, 10:17am

Ok. A such simple dummy file should work.
The first error message you get would suggest Xcode might not be properly installed on your machine. Have you done the command:

xcode-select --install

?

Mansi · December 9, 2021, 10:34am

OK.
I upgraded to the new Mac Laptop (Apple M1 chip).
My earlier one was MacBook Air (Mojave)

So using the inbuilt software everything was copied from my old machine to the new one.

if I do the command -

xcode-select --install

will it affect the root build?

couet · December 9, 2021, 11:04am

It will install the needed Xcode tools. It is required by ROOT.

Mansi · December 9, 2021, 11:05am

OK, I had done it before

mansisaxena@MacBook-Pro-2 ~ % xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates
mansisaxena@MacBook-Pro-2 ~ %

couet · December 9, 2021, 11:18am

So the command line tools are already installed. That’s good.
I am not sure why ACliC does not work for you.
@pcanal might know.

pcanal · December 9, 2021, 4:52pm

The core issues is:

I.e the compiled version of ROOT and the XCode version do not match. The ‘easiest’ is to download (or rebuild) ROOT such that it correspond to you version of XCode and MacOS.

system · December 23, 2021, 4:52pm

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