[Time4Tea]

Hi, I am trying to compile a very simple OF application as part of a learning exercise; however, I am seeing a compilation error that I don't understand, and I'm wondering if anyone can help?


This is the error I am getting:

Compiling enabled on 2 cores
g++ -std=c++11 -DlinuxARM7 -DWM_ARCH_OPTION=32 -DWM_DP -DWM_LABEL_SIZE=32 -Wall -Wextra -Wo
ld-style-cast -Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof -Wno-attribute
s -O3 -floop-optimize -falign-loops -falign-labels -falign-functions -falign-jumps -fprefet
ch-loop-arrays -mcpu=cortex-a9 -mfpu=vfpv3-d16 -mfloat-abi=hard  -DNoRepository -ftemplate-
depth-100 -I/home/lee/OpenFOAM/OpenFOAM-6/src/finiteVolume/lnInclude -I/home/lee/OpenFOAM/O
penFOAM-6/src/OpenFOAM/fields/GeometricFields/GeometricField -I/home/lee/OpenFOAM/OpenFOAM-
6/src/OpenFOAM/fields/DimensionedFields/DimensionedField -IlnInclude -I. -I/home/lee/OpenFO
AM/OpenFOAM-6/src/OpenFOAM/lnInclude -I/home/lee/OpenFOAM/OpenFOAM-6/src/OSspecific/POSIX/l
nInclude   -fPIC -c gradient.C -o Make/linuxARM7GccDPInt32Opt/gradient.o
In file included from /home/lee/OpenFOAM/OpenFOAM-6/src/finiteVolume/lnInclude/fvMesh.H:58,
                 from /home/lee/OpenFOAM/OpenFOAM-6/src/finiteVolume/lnInclude/volMesh.H:42
,
                 from gradient.C:7:
/home/lee/OpenFOAM/OpenFOAM-6/src/OpenFOAM/fields/DimensionedFields/DimensionedField/Dimens
ionedField.H: In instantiation of ‘class Foam::DimensionedField<double, Foam::surfaceMesh>’
:
/home/lee/OpenFOAM/OpenFOAM-6/src/OpenFOAM/fields/GeometricFields/GeometricField/GeometricF
ield.H:81:7:   required from ‘class Foam::GeometricField<double, Foam::fvsPatchField, Foam:
:surfaceMesh>’
gradient.C:125:24:   required from here
/home/lee/OpenFOAM/OpenFOAM-6/src/OpenFOAM/fields/DimensionedFields/DimensionedField/Dimens
ionedField.H:83:40: error: invalid use of incomplete type ‘class Foam::surfaceMesh’
         typedef typename GeoMesh::Mesh Mesh;
                                        ^~~~

It only seems to happen when I add the following line of code to my .C file:

surfaceScalarField Tf("Tf",gf);

I am trying to use one of the GeometricField copy constructors to create Tf as a copy of gf (which is a pre-existing surfaceScalarField). gf is the interpolation weights for the interior mesh faces, and Tf is an interpolated scalar field that I want to calculate on the internal faces.


Am I using the copy constructor in this context incorrectly? Thanks in advance for any advice.

[Time4Tea]

Aah ... I hadn't included "surfaceMesh.H". I really need to stop doing that ... :-(