Hello,
I'm using autotools to build a library that incorporates several custom functions that are based on opencv that I will use in another project.
So first I build this library with the following structure:
src/ (all .cpp files)
dpf-template/ (all .h files)
test/
configure.ac
Makefile.am
dpf_template.pc.in
configure.ac:
AC_PREREQ([2.69])
AC_INIT([calc_mean], [1.0])
AM_INIT_AUTOMAKE([foreign])
AM_MAINTAINER_MODE([enable])
AC_CONFIG_MACRO_DIR([m4])
# Checks for programs.
AC_PROG_CXX
AC_PROG_LIBTOOL
#PKG_CHECK_MODULES([calc_mean])
AC_OUTPUT([Makefile
src/Makefile
test/Makefile
dpf_template.pc])
Makefile.am:
ACLOCAL_AMFLAGS = -I m4
AUTOMAKE_OPTIONS = foreign
SUBDIRS = src test
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = dpf_template.pc
src/Makefile.am
lib_LTLIBRARIES = libdpf_template.la
libdpf_template_la_SOURCES = \ (plus all the files in src/*.cpp and dpf-template/*.h
AM_CPPFLAGS = -I$(top_srcdir) `pkg-config --cflags opencv`
AM_CFLAGS = -g -Wall `pkg-config --cflags opencv` -I/usr/include/eigen3
AM_CXXFLAGS=`pkg-config --cflags opencv`
libdpf_templateincludedir = $(includedir)/dpf_template
libdpf_templateinclude_HEADERS = \ (plus all the files in dpf-template/*.h)
I also saw where opencv.pc is and then checked that it is in PKG_CONFIG_PATH.
With these, I run make and make install with no errors. So far so go, but when I build a simple project that includes this dpf_template.so (through .pc file) and I have only one error which is
libdpf_template.so: undefined reference to `cv::meanShift(cv::_InputArray const&, cv::Rect_<int>&, cv::TermCriteria)'
collect2: error: ld returned 1 exit status
Shouldn't I have been prompted something when I build the libdpf_template? Thanks for the help.