Error: Processing of port qt4-mac failed

[petersonjl@…]

Installing qt4 on OS X El Caption Version 10.11.2 3.7 GHz Quad-Core Intel Xeon E5 16 GB 1866 MHz DDR3 ECC. I got the following error

Attempting to fetch qt4-mac-4.8.7_2.darwin_15.x86_64.tbz2 from http://lil.fr.packages.macports.org/qt4-mac
--->  Fetching distfiles for qt4-mac
--->  Attempting to fetch qt-everywhere-opensource-src-4.8.7.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/qt4-mac
--->  Verifying checksums for qt4-mac
--->  Extracting qt4-mac
--->  Applying patches to qt4-mac
--->  Configuring qt4-mac
--->  Building qt4-mac
Error: org.macports.build for port qt4-mac returned: command execution failed
Please see the log file for port qt4-mac for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_www.macports.org_files_ports_aqua_qt4-mac/qt4-mac/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port qt4-mac failed

[petersonjl@…]

Main Log

[mkae (Marko Käning)]

Please use wiki formatting to make reading easier.

[ryandesign (Ryan Carsten Schmidt)]

The log says:

:info:configure /System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:19:21: error: expected a type
:info:configure - (id)copyWithZone:(nullable NSZone *)zone;
:info:configure                     ^

What version of Xcode are you using? El Capitan requires Xcode 7 or greater.

[ryandesign (Ryan Carsten Schmidt)]

Examining the log closer, I see mention of clang 600.0.56 which is from Xcode 6.1.1. Please upgrade to Xcode 7, with the corresponding version of the command line developer tools.

[petersonjl@…]

Updated to Xcode 7 and it fixed the problem.