[Patch-gnuradio] C++ example for gr-howto

[Martin Braun]

Hi,

the attached patch includes an example C++-only app for
gr-howto-write-a-block. Two things I'd like to point out:

1) I stumbled upon the following lines in Makefile.common: 
STD_DEFINES_AND_INCLUDES = \
        $(DEFINES) \
        -I$(abs_top_srcdir)/include \

Since abs_top_srcdir points to the top of gr-howto, the last shown line
will never point to a useful directory (since
gr-howto-write-a-block/include) does not exist). The patch changes that
to 
        -I$(abs_top_srcdir)/lib \
because I thought that might be what was meant in the first place, and
it makes apps/Makefile.am lighter.

2) I'm still getting the hang of git and, in particular, automake so this
probably could be solved a bit nicer. Basically, it's a merge of the
dial_tone C++ example in the GR master and gr-howto-write-a-block.

Hope this is useful,
MB

-- 
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)

Dipl.-Ing. Martin Braun
Research Associate

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Building 05.01
76131 Karlsruhe

Phone: +49 721 608-3790
Fax: +49 721 608-6071
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KIT -- University of the State of Baden-Württemberg and
National Laboratory of the Helmholtz Association

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