Gyoto: unbreak build with libstdc++

Author: barracuda156

science/Gyoto/Portfile

@@ -35,6 +35,9 @@ depends_lib         port:cfitsio \
                     port:udunits2 \
                     port:xercesc3
 
+# xercesc3 requires C++11; notice that eigen3-devel needs C++14.
+compiler.cxx_standard   2011
+
 configure.args      --without-yorick \
                     --with-lorene=${prefix}/lib/lorene \
                     --with-xerces \
@@ -132,11 +135,9 @@ subport Gyoto {
     }
 }
 
-if {[string match libc++ ${configure.cxx_stdlib}]} {
-
-    compilers.enforce_c [boost::depends_portname]
+compilers.enforce_c [boost::depends_portname]
 
-    variant openmpi conflicts mpich \
+variant openmpi conflicts mpich \
         description {Add MPI parallelization using OpenMPI} {
         set c_variant [c_variant_name]
         if {${c_variant} == ""} {
@@ -157,12 +158,12 @@ if {[string match libc++ ${configure.cxx_stdlib}]} {
         build.args-delete CC="${configure.cc}"
         build.args-append CC="mpicc-openmpi-${mpi_suffix}"
         notes "
-For multi-processing, wrap gyoto in mpirun-openmpi-${mpi_suffix}, e.g.:
-  $ mpirun-openmpi-${mpi_suffix} gyoto -P4 in.xml out.fits
-"
-    }
+    For multi-processing, wrap gyoto in mpirun-openmpi-${mpi_suffix}, e.g.:
+    $ mpirun-openmpi-${mpi_suffix} gyoto -P4 in.xml out.fits
+    "
+}
 
-    variant mpich conflicts openmpi \
+variant mpich conflicts openmpi \
         description {Add MPI parallelization using MPICH} {
         set c_variant [c_variant_name]
         if {${c_variant} == ""} {
@@ -183,13 +184,9 @@ For multi-processing, wrap gyoto in mpirun-openmpi-${mpi_suffix}, e.g.:
         build.args-delete CC="${configure.cc}"
         build.args-append CC="mpicc-mpich-${mpi_suffix}"
         notes "
-+-- Gyoto Usage note ------------------------------------------------------
-| For multi-processing, wrap gyoto in mpirun-mpich-${mpi_suffix}, e.g.:
-|   $ mpirun-mpich-${mpi_suffix} gyoto -P4 in.xml out.fits
-+--------------------------------------------------------------------------
-"
-    }
-
-} else {
-    configure.args-append --disable-c++11
+    +-- Gyoto Usage note ------------------------------------------------------
+    | For multi-processing, wrap gyoto in mpirun-mpich-${mpi_suffix}, e.g.:
+    |   $ mpirun-mpich-${mpi_suffix} gyoto -P4 in.xml out.fits
+    +--------------------------------------------------------------------------
+    "
 }