Dictionary issue on macOS (with conda Root ?)

ROOT
1

When compiling a Root-dependent library, that has a dictionary, I run into issues when trying to access the library-defined objects :

root [1] gSystem->Load("./libKM3NeTROOT.dylib");
root [2] KM3NETDAQ::JDAQHit j;
In file included from G__KM3NeTROOT dictionary payload:1037:
In file included from /Users/laurent/git.km3net.de/common/km3net-dataformat/build-release/km3net-dataformat/online/JDAQHit.hh:9:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/netinet/in.h:81:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/socket.h:561:30: error: unknown type name 'msg_namelen'
        void            *__sized_by(msg_namelen) msg_name; /* [XSI] optional address */
                                    ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/socket.h:561:42: error: expected ';' at end of declaration list
        void            *__sized_by(msg_namelen) msg_name; /* [XSI] optional address */
                                                ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/socket.h:565:30: error: unknown type name 'msg_controllen'
        void            *__sized_by(msg_controllen) msg_control; /* [XSI] ancillary data, see below */
                                    ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/socket.h:565:45: error: expected ';' at end of declaration list
        void            *__sized_by(msg_controllen) msg_control; /* [XSI] ancillary data, see below */
                                                   ^
Error in <TInterpreter::AutoParse>: Error parsing payload code for class KM3NETDAQ::JDAQHit with content:

#line 1 "G__KM3NeTROOT dictionary payload"

... snip ...

This is with Root 6.32.10, on macOS15.5. But I guess the important piece of information is that the Root used is installed using conda (micromamba). On the same macOS machine, using a Root built with e.g. Spack, and the same way of building the library, the error does not appear (also not happening on e.g. a Linux machine).

Looks somehow related to the compiler used in the conda env ?
Is this a “known” issue ? Any way to overcome it ?

Thanks,

2

Hi @laurent.aphecetche,
Thank you for sharing your findings.
@couet, did you encounter this issue on MacOS before?

3

No, I never saw that. May be @devajith has an idea ?

4

Did you try removing the #include <netinet/in.h> line from JDAQHit.hh?

(since it seems it’s not directly used by that file)?

5

Thanks for the suggestion.
This indeed could solve the issue, but some client code might depend on this include (not a good thing, I know, but still might happen…), so I was wondering if there’s a way to solve this without actually changing the code.