Exception while buidling oversim in MacOS Monterey

[vgiotsas]

While executing make I get the following error:

oversim % make
cd src && make
make[1]: Entering directory '/Users/vgiotsas/Downloads/omnetpp-6.0/oversim/src'
MSGC: applications/almtest/ALMTestTracedMessage.msg
applications/almtest/ALMTestTracedMessage.msg:28: Error: Type declarations are not needed with imports, try invoking the message compiler in legacy (4.x) mode using the --msg4 option
applications/almtest/ALMTestTracedMessage.msg:33: Error: unknown type 'OverlayKey' for field 'groupId' in 'ALMTestTracedMessage'
opp_msgtool: error in 1 file(s)
make[1]: *** [Makefile:379: applications/almtest/ALMTestTracedMessage_m.h] Error 1
make[1]: Leaving directory '/Users/vgiotsas/Downloads/omnetpp-6.0/oversim/src'
make: *** [Makefile:11: all] Error 2

My system is MacOS Monterey 12.2.1 with GNU Make 4.2.1 Built for x86_64-apple-darwin17.7.0

[avarga]

The problem is not macOS, but that OverSim-20190424 only works with OMNeT++ 5.x (the Releases page says "OMNeT++ 5.4.1 or later"). There were many changes in OMNeT++ 6.0 affecting compatibility.

[vgiotsas]

Thanks @avarga

I've downloaded Oment 5.6 and Inet-3.6.5 which solved the previous issue, but unfortunately now I get a different error:

% make
cd src && /Applications/Xcode.app/Contents/Developer/usr/bin/make
applications/UDPAppBase.cc
applications/almtest/ALMTest.cc
In file included from applications/almtest/ALMTest.cc:26:
In file included from ./applications/almtest/ALMTest.h:29:
In file included from ./common/BaseApp.h:36:
In file included from ./common/NodeVector.h:31:
In file included from ./common/Comparator.h:30:
In file included from ./common/ProxNodeHandle.h:30:
In file included from ./common/NodeHandle.h:34:
In file included from ./common/TransportAddress.h:30:
./common/oversim_mapset.h:32:10: fatal error: 'tr1/unordered_map' file not found
#include <tr1/unordered_map>
         ^~~~~~~~~~~~~~~~~~~
1 error generated.
make[1]: *** [../out/clang-release/src/applications/almtest/ALMTest.o] Error 1
make: *** [all] Error 2

[avarga]

Have you tried leaving out the tr1/ part? I.e. just change #include <tr1/unordered_map> to #include <unordered_map>. Looks like the code was written before std::unordered_map became official part of the C++ standard.