[MacPorts] #57156: wgrib2 fails to build on Mac OS X 10.11.6

[MacPorts]

#57156: wgrib2 fails to build on Mac OS X 10.11.6
--------------------+--------------------
 Reporter:  yurukc  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  High    |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  wgrib2
--------------------+--------------------
 While I was trying to upgrade ncarg on Mac OS X 10.11.6, I gave the
 following error message about wgrib2.
 Then I tried "sudo port clean wgrib2" and "sudo port install wgrib2",
 respectively but it gave the same error.

 Warning: Xcode does not appear to be installed; most ports will likely
 fail to build.\\
 --->  Computing dependencies for wgrib2\\
 --->  Fetching archive for wgrib2\\
 --->  Attempting to fetch wgrib2-2.0.7_4+gcc7.darwin_15.x86_64.tbz2 from
 http://nue.de.packages.macports.org/wgrib2\\
 --->  Attempting to fetch wgrib2-2.0.7_4+gcc7.darwin_15.x86_64.tbz2 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/wgrib2\\
 --->  Attempting to fetch wgrib2-2.0.7_4+gcc7.darwin_15.x86_64.tbz2 from
 http://lil.fr.packages.macports.org/wgrib2\\
 --->  Fetching distfiles for wgrib2\\
 --->  Attempting to fetch wgrib2.tgz.v2.0.7 from
 http://nue.de.distfiles.macports.org/wgrib2\\
 --->  Verifying checksums for wgrib2
 \\
 --->  Extracting wgrib2\\
 --->  Applying patches to wgrib2\\
 --->  Configuring wgrib2\\
 --->  Building wgrib2\\
 Error: Failed to build wgrib2: command execution failed\\\\
 There were also warning notes at the end.\\
 --->  Some of the ports you installed have notes:
   hdf5 has the following notes:
     Mac users may need to set the environment variable
 "HDF5_USE_FILE_LOCKING" to the five-character string "FALSE" when
 accessing network mounted files.  This is an
     application run-time setting, not a configure or build setting.
 Otherwise errors such as "unable to open file" or "HDF5 error" may be
 encountered.
   libidn has the following notes:
     Please be aware that GNU libidn2 is the successor of GNU libidn. It
 comes with IDNA 2008
     and TR46 implementations and also provides a compatibility layer for
 GNU libidn.
   libpsl has the following notes:
     libpsl API documentation is provided by the port 'libpsl-docs'.
   netcdf has the following notes:
     As of version 4.2 c++ and fortran interfaces are separate ports,
 netcdf-cxx and netcdf-fortran, respectively.
   python27 has the following notes:
     To make this the default Python or Python 2 (i.e., the version run by
 the 'python' or 'python2' commands), run one or both of:

         sudo port select --set python python27\\
         sudo port select --set python2 python27

 **Finally I made "sudo port upgrade outdated" and it stopped again while
 building wgrib2.**\\\\
 Warning: All compilers are either blacklisted or unavailable; defaulting
 to first fallback option\\
 Warning: All compilers are either blacklisted or unavailable; defaulting
 to first fallback option\\
 Warning: Xcode does not appear to be installed; most ports will likely
 fail to build.\\
 --->  Computing dependencies for wgrib2\\
 --->  Building wgrib2\\
 Error: Failed to build wgrib2: command execution failed

-- 
Ticket URL: <https://trac.macports.org/ticket/57156>
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