[MacPorts] #68490: Unable to upgrade libomp @17.0.3 -- Build Failed -- clang 3.7 missing atomic support

[MacPorts]

#68490: Unable to upgrade libomp @17.0.3 -- Build Failed -- clang 3.7 missing
atomic support
--------------------+--------------------
 Reporter:  RobK88  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.8.1
 Keywords:          |       Port:  libomp
--------------------+--------------------
 I am unable to upgrade `libomp` to version @17.0.3 on Lion.  During the
 upgrade, MacPorts installed `clang-3.7` (@3.7.1_9) for the first time
 which appears to be missing atomic support needed to build `libomp`.

 See attached main.log.


 {{{
 bash-3.2$ sudo port clean libomp
 --->  Cleaning libomp
 bash-3.2$
 bash-3.2$ sudo port installed libomp
 The following ports are currently installed:
   libomp @16.0.6_0+universal (active)
 bash-3.2$
 bash-3.2$ sudo port upgrade libomp
 --->  Computing dependencies for libomp
 --->  Fetching archive for libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://packages.macports.org/libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://ywg.ca.packages.macports.org/mirror/macports/packages/libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://mirror.fcix.net/macports/packages/libomp
 --->  Fetching distfiles for libomp
 --->  Verifying checksums for libomp
 --->  Extracting libomp
 --->  Applying patches to libomp
 --->  Configuring libomp
 --->  Building libomp
 Error: Failed to build libomp: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_libomp/libomp/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets if you believe
 there is a bug.
 bash-3.2$
 }}}


 Workaround -- install or upgrade `libomp` using `clang-7.0` which includes
 atomic support (thanks to kencu).


 {{{
 bash-3.2$ sudo port clean libomp
 --->  Cleaning libomp
 bash-3.2$
 bash-3.2$ sudo port installed libomp
 The following ports are currently installed:
   libomp @16.0.6_0+universal (active)
 bash-3.2$
 bash-3.2$ sudo port upgrade libomp configure.compiler=macports-clang-7.0
 --->  Computing dependencies for libomp
 --->  Fetching archive for libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://packages.macports.org/libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://ywg.ca.packages.macports.org/mirror/macports/packages/libomp
 --->  Attempting to fetch
 libomp-17.0.3_0+universal.darwin_11.i386-x86_64.tbz2 from
 http://mirror.fcix.net/macports/packages/libomp
 --->  Fetching distfiles for libomp
 --->  Verifying checksums for libomp
 --->  Extracting libomp
 --->  Applying patches to libomp
 --->  Configuring libomp
 --->  Building libomp
 --->  Staging libomp into destroot
 --->  Installing libomp @17.0.3_0+universal
 --->  Cleaning libomp
 --->  Deactivating libomp @16.0.6_0+universal
 --->  Cleaning libomp
 --->  Activating libomp @17.0.3_0+universal
 --->  Cleaning libomp
 --->  Scanning binaries for linking errors
 --->  No broken files found.
 --->  No broken ports found.
 --->  Some of the ports you installed have notes:
   libomp has the following notes:
     To use this OpenMP library:
      * For clang-3.8+, or clang-3.7 with +openmp variant:
         add "-fopenmp" during compilation / linking.
      * For clang-3.7 without +openmp variant, use:
         "-I/opt/local/include/libomp -L/opt/local/lib/libomp -fopenmp"
 bash-3.2$
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/68490>
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