Hi list.
I am trying to write a hierarchical block in c++ in an OOT module.
I create the block with the gr_modtool and try to make a very simple
hier block. The only relevant changes to the template are:
in the ...impl.cc:
#include <gnuradio/blocks/copy.h>
...
testhier::make()... unchanged
...
gr::blocks::copy::sptr copy(gr::blocks::copy::make(sizeof(gr_complex)));
connect(self(), 0, copy, 0);
connect(copy, 0, self(), 0);
testhier_impl::testhier_impl()
: gr::hier_block2("testhier",
gr::io_signature::make(1, 1, sizeof(gr_complex)),
gr::io_signature::make(1, 1, sizeof(gr_complex)))
{
gr::blocks::copy::sptr
copy(gr::blocks::copy::make(sizeof(gr_complex)));
connect(self(), 0, copy, 0);
connect(copy, 0, self(), 0);
}
So this should be the quite simplest form of a hier block. However, the
following wierdnesses occur:
On Ubuntu:
make is successful
If I import the module in python, I get a segmentation fault. As far as
I got with gdb, the error may be somewhere in swig.
However, if I first do "from gnuradio import blocks", the import is
successful, but the module only contains the python blocks, all c++
blocks are missing.
When I only use a block from the same OOT module in the hier block, the
import also is successful, but again the c++ blocks are missing.
On arch linux:
make fails with a linker error:
undefined reference to `gr::blocks::copy::make(unsigned long)'
However if I only use a block from the same OOT module in the hier
block, the whole thing seems to work.
What am I doing wrong? Did I forget to include something? Can it be that
hard to make a c++ hier block?
Thanks for your help
Julius
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