clang-3.7 build fails on Sierra

[ibethune (Iain Bethune)]

Attemping to install clang-3.7 after upgrading to Mac OS X Sierra (from a clean install of macports), I run into the following error:

Iains-MacBook-Pro:genefer ibethune$ sudo port install clang-3.7
Password:
--->  Computing dependencies for clang-3.7
--->  Building clang-3.7
Error: org.macports.build for port clang-3.7 returned: command execution failed
Please see the log file for port clang-3.7 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-3.7/clang-3.7/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port clang-3.7 failed

I attach the file /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-3.7/clang-3.7/main.log in which the problem seems to be a linking error:

:info:build ld: unexpected token: !tapi-tbd-v2 file '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib/libc++abi.tbd' for architecture i386
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)

[ibethune (Iain Bethune)]

Cc Me!

[ibethune (Iain Bethune)]

Cc Me!

[mf2k (Frank Schima)]

In the future, please Cc the port maintainers (port info --maintainers clang-3.7), if any.

[jeremyhu (Jeremy Huddleston Sequoia)]

You need to use the +ld64_xcode variant until Apple releases Xcode 8's ld64 sources

[ibethune (Iain Bethune)]

Thanks Jeremey, but the same seems to occur when I install the +ld64_xcode variant:

Iains-MacBook-Pro:genefer ibethune$ sudo port clean clang-3.7
Password:
Sorry, try again.
Password:
--->  Cleaning clang-3.7
Iains-MacBook-Pro:genefer ibethune$ sudo port install clang-3.7 +ld64_xcode
--->  Computing dependencies for clang-3.7
--->  Fetching archive for clang-3.7
--->  Attempting to fetch clang-3.7-3.7.1_4+analyzer.darwin_16.x86_64.tbz2 from https://packages.macports.org/clang-3.7
--->  Attempting to fetch clang-3.7-3.7.1_4+analyzer.darwin_16.x86_64.tbz2 from http://lil.fr.packages.macports.org/clang-3.7
--->  Attempting to fetch clang-3.7-3.7.1_4+analyzer.darwin_16.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/clang-3.7
--->  Fetching distfiles for clang-3.7
--->  Verifying checksums for clang-3.7
--->  Extracting clang-3.7
--->  Applying patches to clang-3.7
--->  Configuring clang-3.7
--->  Building clang-3.7
Error: org.macports.build for port clang-3.7 returned: command execution failed
Please see the log file for port clang-3.7 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_llvm-3.7/clang-3.7/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port clang-3.7 failed

Updated log file attached (but seems to be the same error as before)

[ibethune (Iain Bethune)]

log file from clang-3.7 +ld64_xcode build

[jeremyhu (Jeremy Huddleston Sequoia)]

What's the output of :

ls -l /opt/local/libexec/ld64/ld

[ibethune (Iain Bethune)]

Iains-MacBook-Pro:genefer ibethune$ ls -l /opt/local/libexec/ld64/ld
lrwxr-xr-x  1 root  admin  9 12 Sep 11:15 /opt/local/libexec/ld64/ld -> ld-latest
Iains-MacBook-Pro:genefer ibethune$ ls -l /opt/local/libexec/ld64/ld-latest 
-rwxr-xr-x  1 root  admin  1738032 12 Sep 11:15 /opt/local/libexec/ld64/ld-latest

[jeremyhu (Jeremy Huddleston Sequoia)]

Which indicates that you're not using the +ld64_xcode variant of ld64. Please install ld64 with the +ld64_xcode variant.

[ibethune (Iain Bethune)]

Thanks Jeremy, all working now :)