Arb build failure

[david.green@…]

Fetching archive for arb
--->  Attempting to fetch arb-5.3_6.darwin_12.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/arb
--->  Attempting to fetch arb-5.3_6.darwin_12.x86_64.tbz2 from http://lil.fr.packages.macports.org/arb
--->  Attempting to fetch arb-5.3_6.darwin_12.x86_64.tbz2 from http://packages.macports.org/arb
--->  Fetching distfiles for arb
--->  Attempting to fetch arbsrc.tgz from http://mse.uk.distfiles.macports.org/sites/distfiles.macports.org/arb/5.3
--->  Verifying checksum(s) for arb
--->  Extracting arb
--->  Applying patches to arb
--->  Configuring arb
--->  Building arb
Error: org.macports.build for port arb returned: command execution failed
Please see the log file for port arb for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_science_arb/arb/main.log

System: Mac Pro quad-core xeon (2008) 14Gb DDR2; MacOSX 10.8.2 Xcode 4.4 (and 4.5 too)

[ci42]

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