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PO'undefined reference to' with cmake
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  1. PO'undefined reference to' with cmake
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    copied!<p>So, I am trying to write an applet for school, and part of it requires using cmake. I have two different classes contained in their own files, and I use them as part of the main class. I have included their headers as such in the main project header:</p> <pre><code>#include /path/to/header/1.h #include /path/to/header/2.h </code></pre> <p>The problem I have is that when I run make after I've run cmake, I get undefined reference errors for any instance in which I try to use one of the two libraries. I know that it has to do with linker errors, but since I'm new to cmake, I'm not exactly sure what the proper way to use TARGET_LINK_LIBRARIES would be.</p> <p>EDIT</p> <p>After linking/associating my libraries, I have the following:</p> <p>CMakeLists.txt:</p> <pre><code># A name for the project project(plasma-engine-gdrive) # Find the required libaries find_package(KDE4 REQUIRED) include(KDE4Defaults) add_definitions (${QT_DEFINITIONS} ${KDE4_DEFINITIONS}, -std=c++0x) include_directories( ${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${KDE4_INCLUDES} ./include ./lib ) set (GOOGLE_LIBS include/atom_helper.h include/util/string_utils.h include/client/doc_list_service.h include/client/service.h) set (GOOGLE_SRCS include/atom_helper.cc include/util/string_utils.cc include/client/doc_list_service.cc include/client/service.cc) # We add our source code here set(gdrive_engine_SRCS gdriveengine.cpp) add_library (DataWrapper include/DataWrapper.cpp include/DataWrapper.h) add_library (GData ${GOOGLE_SRCS} ${GOOGLE_LIBS}) # Now make sure all files get to the right place kde4_add_plugin(plasma_engine_gdrive ${gdrive_engine_SRCS}) target_link_libraries(plasma_engine_gdrive GData DataWrapper ${KDE4_KDECORE_LIBS} ${KDE4_PLASMA_LIBS}) install(TARGETS plasma_engine_gdrive DESTINATION ${PLUGIN_INSTALL_DIR}) install(FILES plasma-engine-gdrive.desktop DESTINATION ${SERVICES_INSTALL_DIR}) </code></pre> <p>There are also too many errors to put here. Here's a few:</p> <pre><code>/usr/include/c++/4.6/bits/stl_map.h:467: undefined reference to `Glib::ustring::ustring()' lib/libGData.a(atom_helper.o): In function `pair&lt;Glib::ustring, Glib::ustring, void&gt;': /usr/include/c++/4.6/bits/stl_pair.h:132: undefined reference to `Glib::ustring::ustring(Glib::ustring const&amp;)' /usr/include/c++/4.6/bits/stl_pair.h:132: undefined reference to `Glib::ustring::ustring(Glib::ustring const&amp;)' lib/libGData.a(atom_helper.o): In function `pair&lt;Glib::ustring, Glib::ustring&gt;': /usr/include/c++/4.6/bits/stl_pair.h:137: undefined reference to `Glib::ustring::ustring(Glib::ustring const&amp;)' /usr/include/c++/4.6/bits/stl_pair.h:137: undefined reference to `Glib::ustring::ustring(Glib::ustring const&amp;)' </code></pre>
 

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