Here is what I would do in your shoes. I would take the failing compilation command, i.e.,

Ok, If I was you I would:

g++ -DHAVE_CONFIG_H -I. -I.. -I.. -I../src -D_SYS_REG_H -I/opt/local/include \ -g -O2 -frounding-math -W -Wall -MT C_Polyhedron.lo -MD -MP \ -MF .deps/C_Polyhedron.Tpo -c C_Polyhedron.cc -fPIC -DPIC -o .libs/C_Polyhedron.o

I would replace -c with -E and erase -g, -O2, ... and anything after C_Polyhedron.cc, redirecting the output to a file.

Then I get: g++ -DHAVE_CONFIG_H -I. -I.. -I.. -I../src -D_SYS_REG_H -I/opt/local/include -frounding-math -W -Wall -MT C_Polyhedron.lo -MD -MP -MF .deps/C_Polyhedron.Tpo -E C_Polyhedron.cc | grep CS static const flags_t CS_PENDING = 1U << 7; return test_any(CS_PENDING); reset(CS_PENDING); set(CS_PENDING); static const flags_t CS_PENDING = 1U << 7; return test_any(CS_PENDING); reset(CS_PENDING); set(CS_PENDING);

Then I would try to identify the header that is defining the macro CS.

statit const ... appears in: # 70 "Grid_Status.idefs.hh" and # 85 "Ph_Status.idefs.hh" So then I as you would do the following: ... Thanks, alan

Reading all your files is exactly what I had in mind :-)

Yea, it's just that every time I show people my plans for mind control they start to laugh and then they call me stupid and it's really starting to get on my nerves. That's all. :-)