I am quite new to unix as well as GNU radio, but after practising with
the
different modules and reading alot about it in papers and tutorials I’ve
been able to understand how to use some of its functions. Presently I am
trying to make a block in GNU Radio Companion from a C shared library
file
generated from Matlab.
I’ve been following the tutorial on how to create a signal processing
block
and I believe my files are ready, also I have edited most of the scripts
as
per requirements. However, when I try to do “make”/“sudo make” after
./bootstrap and ./configure, the compiler is unable to build because it
cannot find one of the matlab libraries that are a dependency for my .h
and
.cc file. I’ve tried looking everywhere on forums for a solution but
there
is no information regarding this. The library files in question are the
mclmcrrt.h and mclcppclass.h. Matlab used them to compile the shared
library
so the path I set for them in bashrc seems correct. When I do “locate” I
can
find the libraries as well.
Following error is generated and then it says that all subsequent
functions
being used in the .cc file being not initialized and stops.
In file included from ./howto_square_ff.h:26,
from howto_square_ff.cc:32:
./libmyfunc.h:14:22: error: mclmcrrt.h: No such file or directory
./libmyfunc.h:15:25: error: mclcppclass.h: No such file or directory
I’m on Ubuntu 9.10 - the Karmic Koala release
Is there something specific that needs to be done for the “make”
procedure
to read these libraries ? Any help in this regard will be highly
appreciated. This is my first time posting here, so I hope I was able to
convey as much information as possibly regarding the problem.
./bootstrap and ./configure, the compiler is unable to build because it
from howto_square_ff.cc:32:
./libmyfunc.h:14:22: error: mclmcrrt.h: No such file or directory
./libmyfunc.h:15:25: error: mclcppclass.h: No such file or directory
I’m on Ubuntu 9.10 - the Karmic Koala release
Is there something specific that needs to be done for the “make” procedure
to read these libraries ? Any help in this regard will be highly
appreciated. This is my first time posting here, so I hope I was able to
convey as much information as possibly regarding the problem.
You will have to edit the Makefile.am to add the source code directory
to include the two missing header files into the local make
environment. The simplest thing to do is to add this to “AM_CPPFLAGS”
in Makefile.am: “-I” where is the directory of the files.
This isn’t the most elegant way to handle this, and if you are
planning on releasing this or using this code in a more
production-oriented fashion, we’ll have to talk about M4 config files
and the such. But start here and see if it works.
Thanks a lot for the reply Tom, I figured out that part after looking at
a
number of sample Makefile.am files in different projects. I used the
-I
flag to include the directories and the compilation began, but after a
few
steps I received the following error.
====================== from Terminal===================
libtool: link: g++ -g -O2 -g -O2 -o .libs/test_all test_all.o
./.libs/libgnuradio-howto-qa.a
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so
-L/usr/local/lib -L/usr/lib /usr/lib/libcppunit.so -ldl
-lboost_thread-mt
-lrt -lboost_date_time-mt /usr/local/lib/libgnuradio-core.so
/usr/local/lib/libgruel.so /usr/lib/libfftw3f.so -lgsl -lgslcblas -lm
/usr/local/lib/libgromnithread.so -pthread
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so:
undefined reference to libmatinvTerminate' /home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so: undefined reference to mclTerminateApplication_proxy’
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so:
undefined reference to mclInitializeApplication_proxy' /home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so: undefined reference to libmatinvInitialize’
collect2: ld returned 1 exit status
In the above errors libmatinv is the name of my generated library from
matlab mcc. The library is already in the lib folder. The C driver
implementation is also in the lib folder inside generalwork function
implementation.
I have been searching around for this error and I heard from someone
that I
might have to use -L and “small L”-l flags to give the
compiler
the implementation of the functions in my library header, along with the
-I but I am not exactly sure which files does it need. Any
suggestions
in this regard are highly appreciated.
Also Tom you mentioned M4 config files, I am planning to release these
later
on once my target is achieved. Would you kindly guide me a little, so I
have
a decent idea where to start learning about these files and then take it
1
step at a time. Thanks again.
Tom R. wrote:
is no information regarding this. The library files in question are the
        from howto_square_ff.cc:32:
Thanks Eric for your reply. The suggestion was immensely helpful. I was
looking for the wrong documentation initially and could not understand
how
Automake works, think I had the Make one open.
As the documentation is very comprehensive, I was only able to grasp a
few
things but I was able to fix 2 of the errors, the ones related to my own
library file implementations not being defined. However, for the
implementation of the other API functions which are a part of Matlab
internal libraries I don’t have the .cc or .cpp file and just the .so
files
which contain all the implementations inside the Matlab root folder.
Although shared libraries are covered in the Automake document and the
followup Libtool document, but there are many instances and I’m not sure
where exactly should I be looking for my specific case. I figured out
that I
need to add the full path to the API function library file in the
lib/makefile.am, under lib_LTLIBRARIES however as expected it is saying
that
a .la (libtool library) is needed. I’m not sure if this is what I should
be
doing, so any guidance would be great. Thank you for your time.
These and some other Matlab API function errors are appearing.
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so:
undefined reference to `mclTerminateApplication_proxy’
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so:
undefined reference to `mclInitializeApplication_proxy’
Regards,
H.Raza
Eric B. wrote:
/home/user/Downloads/gr-howto-write-a-block-template/lib/.libs/libgnuradio-howto.so:
implementation is also in the lib folder inside generalwork function
Also Tom you mentioned M4 config files, I am planning to release these
is the one that contains libmatinvTerminate, et al. Discuss-gnuradio Info Page
On Mon, May 24, 2010 at 03:36:35PM -0700, H.Raza wrote:
which contain all the implementations inside the Matlab root folder.
Although shared libraries are covered in the Automake document and the
followup Libtool document, but there are many instances and I’m not sure
where exactly should I be looking for my specific case. I figured out that I
need to add the full path to the API function library file in the
lib/makefile.am, under lib_LTLIBRARIES however as expected it is saying that
a .la (libtool library) is needed. I’m not sure if this is what I should be
doing, so any guidance would be great. Thank you for your time.
Please spent some more time with the docs.
lib_LTLIBRARIES is a list of shared libraries that you are building
and installing. You are unlikely to be building and installing what
I’m assuming are matlab libraries; you want to use them.
There are many Makefile.am’s in the source tree. Please consider
looking at them for inspiration.
On Mon, May 24, 2010 at 12:01:17PM -0700, H.Raza wrote:
-L/usr/local/lib -L/usr/lib /usr/lib/libcppunit.so -ldl -lboost_thread-mt
undefined reference to `libmatinvInitialize’
the implementation of the functions in my library header, along with the
-I but I am not exactly sure which files does it need. Any suggestions
in this regard are highly appreciated.
Also Tom you mentioned M4 config files, I am planning to release these later
on once my target is achieved. Would you kindly guide me a little, so I have
a decent idea where to start learning about these files and then take it 1
step at a time. Thanks again.
You have apparently failed to add the additional link-time dependency
when you are bulding libgnuradio-howto.so. The library that’s missing
is the one that contains libmatinvTerminate, et al.
I suggest that you spend a few minutes with the automake documentation: