c++ - 'undefined reference to' with cmake -


so, trying write applet school, , part of requires using cmake. have 2 different classes contained in own files, , use them part of main class. have included headers such in main project header:

#include /path/to/header/1.h #include /path/to/header/2.h

the problem have when run make after i've run cmake, undefined reference errors instance in try use 1 of 2 libraries. know has linker errors, since i'm new cmake, i'm not sure proper way use target_link_libraries be.

edit

after linking/associating libraries, have following:

cmakelists.txt:

# name project project(plasma-engine-gdrive)  # find 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)  # 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})  # make sure files 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})

there many errors put here. here's few:

/usr/include/c++/4.6/bits/stl_map.h:467: undefined reference `glib::ustring::ustring()' lib/libgdata.a(atom_helper.o): in function `pair<glib::ustring, glib::ustring, void>': /usr/include/c++/4.6/bits/stl_pair.h:132: undefined reference `glib::ustring::ustring(glib::ustring const&)' /usr/include/c++/4.6/bits/stl_pair.h:132: undefined reference `glib::ustring::ustring(glib::ustring const&)' lib/libgdata.a(atom_helper.o): in function `pair<glib::ustring, glib::ustring>': /usr/include/c++/4.6/bits/stl_pair.h:137: undefined reference `glib::ustring::ustring(glib::ustring const&)' /usr/include/c++/4.6/bits/stl_pair.h:137: undefined reference `glib::ustring::ustring(glib::ustring const&)'

i working others , got compiled!

all needed provide name of library , put target_link_libraries so:

target_link_libraries(plasma_engine_gdrive                       datawrapper                       gdata                       xml++-2.6                       curl                       glibmm-2.4                       ${kde4_kdecore_libs}                       ${kde4_plasma_libs})

my dad, being unfamiliar cmake, went , dug out link.txt within cmake build structure. there, added following after -o flag:

-lxml++-2.6 -lcurl -lglibmm-2.4

when saw that, thought might try linking through cmakelists.txt -- , worked.


Comments

Post a Comment

Popular posts from this blog

jquery - How can I dynamically add a browser tab? -

since using iframes house external pages are, accounts "not preferred method" , disallowed sites (flickr, one), want dynamically generate browser tabs. e.g., when user submits form, want dynamically generate tab on browser in response submitted. e.g., might want add new tab url like: http://www.bigsurgarrapata.com/contact how in jquery? you want form target attribute action attribute. http://www.w3schools.com/tags/att_form_target.asp browsers have ultimate control on result of target attribute open new tab value of _blank. <form action="contact_submit.php" target="_blank" method="post">
Read more

node.js - Getting the socket id,user id pair of a logged in user(s) -

i have web application done using node js , in it,i have authentication system requires users log in before can access pages. have 2 pages,the homepage , updates page. from read docs,a new socket id issued when user opens tab in browser. me being admin,i know socket id of logged in user , more so,the socket id,logged in user id pair logged in users. what method can use socket id,logged in user id pair make sure broadcast realtime info users online?.
Read more

keyboard - C++ GetAsyncKeyState alternative -

i using windows.h library's getasynckeystate function define key pushed on keyboard . here program returns int value of pushed key example. #include <iostream> #include <windows.h> using namespace std; int main (){ char i; for(i=8;i<190;i++){ if(getasynckeystate(i)== -32767){ cout<<int (i)<<endl; } } return 0; } but trying make opengl simple game , function appeared slow . there function not need cycle 180 times , if statement . thanks you're trying make opengl game, you're going use glfw. if that's case can away using glfwgetkey() such: if (glfwgetkey(glfw_key_up) == glfw_press) {...} if (glfwgetkey(glfw_key_down) == glfw_press) {...} that method nicely explained in tutorial 6 opengl-tutorial.org . should start first tutorial of beginners tutorials , later intermediate tutorials . if you're going make win32 window can listen wm_keydown or wm_keyup messages , virtua
Read more