clang-devel @20200505-6d6d48ad+analyzer+assertions+libstdcxx: fails to build

[EdHarry]

Clang-devel fails to build on MacOS 10.13, getting "Undefined symbols for architecture x86_64" errors:

Undefined symbols for architecture x86_64:
  "__ZTIDu", referenced from:
     -exported_symbol[s_list] command line option
  "__ZTIPDu", referenced from:
     -exported_symbol[s_list] command line option
  "__ZTIPKDu", referenced from:
     -exported_symbol[s_list] command line option
  "__ZTSDu", referenced from:
     -exported_symbol[s_list] command line option
  "__ZTSPDu", referenced from:
     -exported_symbol[s_list] command line option
  "__ZTSPKDu", referenced from:
     -exported_symbol[s_list] command line option
ld: symbol(s) not found for architecture x86_64

[EdHarry]

main log

[kencu (Ken)]

thanks, working on that now..

[kencu (Ken)]

if you know how to build it with clang-9.0, please try that and report back.

if you need a current toolchain, clang-10 is available on macports now and is the latest.

[EdHarry]

I have both the clang-9.0 and clang-10 ports installed (both work fine)

[kencu (Ken)]

BTW, as it sounds like you're pushing the window a bit, to force a port to build with a certain compiler, you do this for example:

sudo port -v install clang-devel configure.compiler=macports-clang-9.0

some clang versions have broken the system due to naming issues that have yet to be fixed until a new base is released. To make clang-10 or clang-devel build something, you need to "select" it first at present:

sudo port -v select --list clang
sudo port -v select clang whichever-clang-you-want

and then to use it for the build:

sudo port -v install MYPORT configure.compiler=macports-clang

[EdHarry]

clang-devel successfully builds using mp-clang-10 as the compiler

sudo port -v select clang mp-clang-10
port -v install clang-devel configure.compiler=macports-clang

I haven't tested mp-clang-9.0

[kencu (Ken)]

fantastic. I'll bump the build xcode clang cutoff to > 903

appreciate the feedback.

[kencu (Ken)]

closed by [f0069725f4a85506a601787daf92e328db7542ae/macports-ports]