esmf: This file requires compiler and library support for the ISO C++ 2011 standard

[salomoneliasson]

Hi,

port rev-upgrade reports broken port, and then tries and fails to fix it automatically. I repeat the process but the port remains broken. My mac version is 10.13.4, Xcode is 9.1

--->  Found 1 broken file, matching files to ports       
--->  Found 1 broken port, determining rebuild order
You can always run 'port rev-upgrade' again to fix errors.
The following ports will be rebuilt: ncarg @6.3.0+gcc5.

Ultimately it concludes with this message:

Error: Failed to build esmf: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_science_esmf/esmf/main.log for details.
Error: Problem while installing esmf
Error: rev-upgrade failed: Error rebuilding ncarg
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

I have checked the attached the log file to the ticket

[ryandesign (Ryan Carsten Schmidt)]

Hmm, well the log shows:

/opt/local/include/gcc5/c++/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.

I guess esmf needs to add that flag, at least when using gcc5 and probably later; not sure if needed for earlier gcc.

[salomoneliasson]

Thanks for looking into this. What do you suggest I do at this stage, do I add these compiler flags? and actually, where to? /Salomon

[Takeshi Enomoto <takeshi@…>]

In 218d3fd276c65f9e22e19f7ec3ef686322e6a156/macports-ports (master):

esmf: fix build with gcc5 or earlier

Closes: #56350