{"id":1589,"date":"2022-08-30T15:17:47","date_gmt":"2022-08-30T15:17:47","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/27\/problem-about-linking-errors-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:17:47","modified_gmt":"2022-08-30T15:17:47","slug":"problem-about-linking-errors-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-linking-errors-collection-of-common-programming-errors\/","title":{"rendered":"problem about linking-errors-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/140609c7b633071f18c4ab2d14702fc1?s=128&amp;d=identicon&amp;r=PG\" \/><br \/>\noneonetwo<br \/>\nc++ xcode class linking-errors<br \/>\nI am trying to create an instance of a the following class:#ifndef Sik_GameEntity_h #define Sik_GameEntity_hclass GameEntity {public:~GameEntity(){};void setup();void update();void draw();void clear();protected:private: };#endifEach of these methods (minus the deconstructor) are fleshed out in my .cpp file.for ( int i = 0; i &lt; nEntities; i++ ) {GameEntity ent;ent.setup();entities.push_back(ent); }I&#8217;m creating an instance and inserting it into a vector of Game Entity objects. When I create<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/de6eafe28472ceb9522fd3f609afed53?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\ntim_yates<br \/>\ncmake ros external-library linking-errors<br \/>\nI&#8217;m trying to use ROS Groovy, under ubuntu 12.04. I want to use cvBlob lib with opencv in ROS. I installed both, my test program works in opencv. I think there shouldn&#8217;t be any problem with the installation of this libs. My $LD_LIBRARY_PATH points to \/opt\/ros\/groovy\/lib, so i also copied there the libcvblob.so. When I try to implement in groovy the same application I get a nasty error after linking:Linking CXX executable \/home\/elod\/myWS\/devel\/lib\/bagDetect\/bagDetect CMakeFiles\/bagDetect.dir\/src\/<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/31df8d0cf36ca98f74829948fd734452?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\ndibyendu<br \/>\nc gtk ubuntu-12.04 linking-errors<br \/>\nI&#8217;ve a C GUI application (in GTK+2.0) that I used to link as follows :gcc -O2 -std=gnu99 -pipe -Wall -lm `pkg-congig gtk+-2.0 `pkg-config &#8211;libs gtk+-2.0` -o exec a.o b.o c.owhich eventually converted into :gcc -O2 -std=gnu99 -pipe -Wall -lm -pthread -I\/usr\/include\/gtk-2.0 -I\/usr\/lib\/x86_64-linux-gnu\/gtk-2.0\/include -I\/usr\/include\/atk-1.0 -I\/usr\/include\/cairo -I\/usr\/include\/gdk-pixbuf-2.0 -I\/usr\/include\/pango-1.0 -I\/usr\/include\/gio-unix-2.0\/ -I\/usr\/include\/glib-2.0 -I\/usr\/lib\/x86_64 linux-gnu\/gl<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/846e877b3035a2a27e1bac0cd2b21b1f?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nPhillip Wyckoff<br \/>\nlinking-errors<br \/>\nI am trying to link to the \/usr\/lib64\/libpodofo.so.0.9.1 library (Podofo) 1) PODOFO was installed via RPMldconfig -p | grep podofolibpodofo.so.0.9.1 (libc6,x86-64) =&gt; \/usr\/lib64\/libpodofo.so.0.9.1 2) I have tried using -L\/usr\/Lib64 -lpodofoin both cases I get a large number of the following errors g++ -Wall -o &#8220;podo_creation_test&#8221; -L\/usr\/lib64 &#8220;podo_creation_test.cpp&#8221; (in directory: \/home\/phillip\/Desktop\/Scanning_work\/bsu\/pnm_to_SPDF\/immage_correction) Compilation failed. \/tmp\/ccksgGue.o: In fu<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/FJJTd.jpg?s=32&amp;g=1\" \/><br \/>\nSunnyShah<br \/>\nlinux qt qt4 compiler-errors linking-errors<br \/>\nI configure qt-x11 with following options.\/configure -prefix \/iTalk\/qtx11 -prefix-install -bindir \/iTalk\/qtx11-install\/bin -libdir \/iTalk\/qtx11-install\/lib -docdir \/iTalk\/qtx11-install\/doc -headerdir \/iTalk\/qtx11-install\/include -datadir \/iTalk\/qtx11-install\/data -examplesdir \/iTalk\/qtx11-install\/examples -demosdir \/iTalk\/qtx11-install\/demos -debug.Now I am getting following errors in Fedora Core 6.Can you please tell me where the problem is?obj\/debug-shared\/qapplication_x11.o: In function `qt_<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/8br6L.png?s=32&amp;g=1\" \/><br \/>\nkarlphillip<br \/>\nc++ g++ cuda linking-errors<br \/>\nI have this c++ project in which I call a cuda kernel by means of a wrapper function.My c++ file looks like this (this is extern.cc): #include &#8220;extern.h&#8221; #include &#8220;qc\/operator.h&#8221; #include &#8220;qc\/quStates.h&#8221; #include &#8220;gpu.h&#8221; &#8230; ROUTINE(ext_bit) { int i; quState *qbit;PAR_QUSTATE(q,&#8221;q&#8221;);opBit *op;tComplex I(0,1);tComplex sg= inv ? -1 : 1;char c=(def-&gt;id())[0];if(def-&gt;id().length()!=1) c=&#8217;?&#8217;;switch(c) {case &#8216;H&#8217;: op=new opBit(1,1,1,-1,sqrt(0.5)); break;case &#8216;X&#8217;: op=new opBit(0,1,1,0<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-11-27 11:57:44. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>oneonetwo c++ xcode class linking-errors I am trying to create an instance of a the following class:#ifndef Sik_GameEntity_h #define Sik_GameEntity_hclass GameEntity {public:~GameEntity(){};void setup();void update();void draw();void clear();protected:private: };#endifEach of these methods (minus the deconstructor) are fleshed out in my .cpp file.for ( int i = 0; i &lt; nEntities; i++ ) {GameEntity ent;ent.setup();entities.push_back(ent); }I&#8217;m creating an [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1589","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=1589"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1589\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=1589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=1589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=1589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}