mpd: error: no type named 'function' in namespace 'std'

[bnilsson11]

mpd does not build:

--->  Building mpd
Error: org.macports.build for port mpd returned: command execution failed
Please see the log file for port mpd for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_audio_mpd/mpd/main.log
In the log file, the first error is:
:info:build In file included from ./src/DatabaseHelpers.hxx:23:
:info:build ./src/DatabaseVisitor.hxx:30:14: error: no type named 'function' in namespace 'std'
:info:build typedef std::function<bool(const Directory &, Error &)> VisitDirectory;

Googling on "no type named 'function' in namespace 'std'" indicates a possible lack of C++11 support.

MacPorts 2.2.1

 System version:	Mac OS X 10.7.5 (11G63)
  Kernel version:	Darwin 11.4.2

[bnilsson11]

gcc: i686-apple-darwin11-llvm-gcc-4.2 Xcode 4.6.3

[ryandesign (Ryan Carsten Schmidt)]

Please attach the main.log file.

[bnilsson11]

main.log

[dbevans (David B. Evans)]

Replying to bnilsson11@…:

Googling on "no type named 'function' in namespace 'std'" indicates a possible lack of C++11 support.

Yes, std::function is a C++11 feature requiring libc++, meaning it will probably only build on Mavericks and higher, if at all.

[dbevans (David B. Evans)]

Confirmed that mpd currently only builds on Mavericks.

[mf2k (Frank Schima)]

rmstonecipher has retired. See #51138.

[ryandesign (Ryan Carsten Schmidt)]

Agreed, this requires C++11. r153111