commoncpp2 @1.8.1: error: friend declaration specifying a default argument must be a definition

[w3sz73@…]

On iMac with El Capitan running MacPorts version 2.3.4, commoncpp2 fails to build. The tail of the log shows:

:info:build libtool: compile:  /usr/bin/clang++ -DHAVE_CONFIG_H -I. -I.. -I../inc -I/opt/local/include -I../src -DCCXX_EXPORT_LIBRARY -D_GNU_SOURCE -I/opt/local/include -I../inc -pipe -Os -arch x86_64 -stdlib=libc++ -MT mutex.lo -MD -MP -MF .deps/mutex.Tpo -c mutex.cpp  -fno-common -DPIC -o .libs/mutex.o
:info:build In file included from mutex.cpp:41:
:info:build In file included from ../inc/cc++/exception.h:52:
:info:build ../inc/cc++/string.h:734:35: error: friend declaration specifying a default argument must be a definition
:info:build     friend __EXPORT std::istream &getline(std::istream &is, String &str, char delim = '\n', size_t size = 0);
:info:build                                   ^
:info:build In file included from thread.cpp:41:
:info:build In file included from ../inc/cc++/thread.h:50:
:info:build ../inc/cc++/string.h:734:35: error: friend declaration specifying a default argument must be a definition
:info:build     friend __EXPORT std::istream &getline(std::istream &is, String &str, char delim = '\n', size_t size = 0);
:info:build                                   ^
:info:build 1 error generated.
:info:build 1 error generated.
:info:build make[2]: *** [mutex.lo] Error 1
:info:build make[2]: *** Waiting for unfinished jobs....
:info:build make[2]: *** [thread.lo] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_commoncpp2/commoncpp2/work/commoncpp2-1.8.1/src'
:info:build make[1]: *** [all-recursive] Error 1
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_commoncpp2/commoncpp2/work/commoncpp2-1.8.1'
:info:build make: *** [all] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_commoncpp2/commoncpp2/work/commoncpp2-1.8.1'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_commoncpp2/commoncpp2/work/commoncpp2-1.8.1" && /usr/bin/make -j2 -w all 
:info:build Exit code: 2
:error:build org.macports.build for port commoncpp2 returned: command execution failed
:debug:build Error code: CHILDSTATUS 38079 2
:debug:build Backtrace: command execution failed
    while executing
"system -nice 0 $fullcmdstring"
    ("eval" body line 1)
    invoked from within
"eval system $notty $nice \$fullcmdstring"
    invoked from within
"command_exec build"
    (procedure "portbuild::build_main" line 8)
    invoked from within
"portbuild::build_main org.macports.build"
    ("eval" body line 1)
    invoked from within
"eval $procedure $targetname"
:info:build Warning: targets not executed for commoncpp2: org.macports.activate org.macports.build org.macports.destroot org.macports.install
:notice:build Please see the log file for port commoncpp2 for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_devel_commoncpp2/commoncpp2/main.log

Thanks in advance for any help / advice!

[ryandesign (Ryan Carsten Schmidt)]

Confirmed, I see the same problem. It looks like 1.8.1 was the last version of commoncpp2 and they have now integrated its functionality into ucommon. We should add a port for ucommon. However, the developers say on their web site they still intend to support and fix bugs in commoncpp2 so you should report the problem to its developers by writing to this mailing list:

​https://lists.gnu.org/mailman/listinfo/bug-commoncpp

[jmroot (Joshua Root)]

In b79a1f7228f2aba7b72ae2d812963d23acf30678/macports-ports (master):

New port ucommon, replaces commoncpp2

Closes: #51874