[MacPorts] #55165: harfbuzz 1.6.1 : cc1plus: error: unrecognized command line option "-std=c++11"

[MacPorts]

#55165: harfbuzz 1.6.1 : cc1plus: error: unrecognized command line option
"-std=c++11"
--------------------+------------------------
 Reporter:  kencu   |      Owner:  ryandesign
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  harfbuzz
--------------------+------------------------
 <https://build.macports.org/builders/ports-10.5_ppc_legacy-
 builder/builds/43346/steps/install-port/logs/stdio>

 will need `PortGroup cxx11 1.1`, which is verified to fix the build on
 10.5 PPC.

 {{{
 libtool: compile:  /usr/bin/g++-4.2 -DHAVE_CONFIG_H -I. -I.. -pthread
 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include
 -I/opt/local/include/freetype2 -I./hb-ucdn -I/opt/local/include -pipe -Os
 -arch ppc -std=c++11 -fno-rtti -fno-exceptions -Wcast-align -fvisibility-
 inlines-hidden -MT libharfbuzz_la-hb-blob.lo -MD -MP -MF .deps
 /libharfbuzz_la-hb-blob.Tpo -c hb-blob.cc  -fno-common -DPIC -o .libs
 /libharfbuzz_la-hb-blob.o
 libtool: compile:  /usr/bin/g++-4.2 -DHAVE_CONFIG_H -I. -I.. -pthread
 -I/opt/local/include/glib-2.0 -I/opt/local/lib/glib-2.0/include
 -I/opt/local/include/freetype2 -I./hb-ucdn -I/opt/local/include -pipe -Os
 -arch ppc -std=c++11 -fno-rtti -fno-exceptions -Wcast-align -fvisibility-
 inlines-hidden -MT libharfbuzz_la-hb-buffer-serialize.lo -MD -MP -MF .deps
 /libharfbuzz_la-hb-buffer-serialize.Tpo -c hb-buffer-serialize.cc  -fno-
 common -DPIC -o .libs/libharfbuzz_la-hb-buffer-serialize.o
 cc1plus: error: unrecognized command line option "-std=c++11"
 cc1plus: error: unrecognized command line option "-std=c++11"
 }}}

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Ticket URL: <https://trac.macports.org/ticket/55165>
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