libstaroffice: needs C++11

devel/libstaroffice/Portfile

@@ -8,7 +8,6 @@ github.tarball_from releases
 use_xz              yes
 
 categories          devel textproc
-platforms           darwin
 license             MPL-2
 maintainers         {gmail.com:audvare @Tatsh} openmaintainer
 
@@ -19,11 +18,14 @@ checksums           rmd160  96d41ee09185a39d1dbd5c418705603424e6f66f \
                     sha256  f94fb0ad8216f97127bedef163a45886b43c62deac5e5b0f5e628e234220c8db \
                     size    707920
 
-depends_build       port:pkgconfig
+depends_build       port:bin/pkg-config:pkgconfig
 depends_lib         port:librevenge \
                     port:zlib
 
 configure.args      --disable-debug \
                     --without-docs \
                     --disable-tools \
                     --enable-zip
+
+# configure: error: *** A compiler with support for C++11 language features is required.
+compiler.cxx_standard   2011