Hello Alessandro, On Tue, Jun 24, 2014 at 01:19:02PM +0200, Alessandro Salatiello wrote: > lib_LTLIBRARIES = libnavigation.la > include_HEADERS = \ > some_headers.h > > libnavigation_la_SOURCES = \ > some_sources.cpp > > libnavigation_la_LDFLAGS = -version-info $(CURRENT):$(REVISION):$(AGE) > -release $(RELEASE) `pkg-config opencv --cflags --libs` > libnavigation_la_LIBADD = -lm $(OPENCV_LIBS) -lboost_thread-mt > -lboost_signals-mt -lcnbiVisualNavigation
... > libtool: link: g++ -g -O2 -o .libs/wheelchair wheelchair.o > -L/home/robotinob/OpenRobotino//lib: > ../src/libnavigation/.libs/libnavigation.so > wheelchair.o: In function `main': > /home/robotinob/mlwcp/ccp/wccontrol/build/examples/../../examples/wheelchair.cpp:391: > undefined reference to `cv::getTickFrequency()' ... > ../src/libnavigation/.libs/libnavigation.so: undefined reference to > `cv::resize(cv::_InputArray const&, cv::_OutputArray const&, > cv::Size_<int>, double, double, int)' > collect2: error: ld returned 1 exit status Seems you have to add the libs to wheelchair_LDADD. I usually use autoconf for that. In configure.ac: PKG_CHECK_MODULES(OPENCV, opencv) In Makefile.am: wheelchair_CPPFLAGS = $(OPENCV_CFLAGS) wheelchair_LDADD = $(OPENCV_LIBS) With kind regards, Baurzhan.
