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POld: Symbol(s) not found… but they are there…
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  1. POld: Symbol(s) not found… but they are there…
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    copied!<p>My project is really acting up lately - I ironed out a whole bunch of errors, and then it throws a cryptic <code>ld: symbol(s) not found</code> error. However, it's clear that the symbols do exist:</p> <pre><code>Undefined symbols: "Solid::~Solid()", referenced from: void std::_Destroy&lt;Solid&gt;(Solid*)in ui.o "Log::operator+=(std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;)", referenced from: runUI() in ui.o "Log::getLog(std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;)", referenced from: runUI() in ui.o "Log::Log()", referenced from: __static_initialization_and_destruction_0(int, int)in ui.o "Building::Building(std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;)", referenced from: runUI() in ui.o "Log::~Log()", referenced from: ___tcf_1 in ui.o </code></pre> <p>Here are the files it references:</p> <h3>log.cpp</h3> <pre><code>/* * log.cpp * * Created on: Apr 30, 2011 * Author: wjc */ #include &lt;string&gt; #include &lt;vector&gt; #include &lt;sstream&gt; // for converting count to string #include "consts.h" using namespace std; struct logResult { vector &lt;string&gt; result; int status; }; struct parsedLog { string result; int status; }; class Log { private: bool initialized; vector &lt;string&gt; * actionLog; static int count; string countString(){ stringstream ss; ss&lt;&lt;count; return ss.str(); } public: int initialize(){ if (initialized) return ALREADY_INIT; actionLog-&gt;push_back("*** Log initialized ***"); actionLog-&gt;push_back("This is log#" + countString() +". If this is greater than one, there is a problem."); initialized = true; return SUCCESS; } int initialize(string text){ int initResult = initialize(); if (initResult == ALREADY_INIT) return ALREADY_INIT; actionLog-&gt;push_back("Initialization message: "+text); return SUCCESS; } Log (){ initialize(); count++; } Log (string text){ initialize(text); count++; } ~Log (){ count--; } bool isInitialized(){ return initialized; } int add(string text){ if (!initialized) return NOT_INIT; actionLog-&gt;push_back(text); return SUCCESS; } int operator+= (string text){ return add(text); } int clearLog(bool init = true){ if (!initialized) return NOT_INIT; delete actionLog; int initResult = SUCCESS; if (init) initResult = initialize(); if (initResult == ALREADY_INIT) return ALREADY_INIT; // Otherwise // (no other possibilities because initialize() // only returns either a SUCCESS or // ALREADY_INIT value) return SUCCESS; } logResult getLog(){ if (!initialized){ logResult final; final.status = NOT_INIT; return final; } else { logResult final; final.result = *actionLog; final.status = SUCCESS; return final; } } parsedLog getLog(string delim){ if (!initialized){ parsedLog final; final.status = NOT_INIT; return final; } else { parsedLog final; string logString; for (unsigned int i; i&lt;actionLog-&gt;size()-1; i++){ logString += (*actionLog)[i]; logString += delim; } logString += actionLog-&gt;back(); final.result = logString; final.status = SUCCESS; return final; } } }; </code></pre> <h3>log.h</h3> <pre><code>/* * log.h * * Created on: Apr 30, 2011 * Author: wjc */ #ifndef LOG_H_ #define LOG_H_ #include &lt;string&gt; using namespace std; struct logResult { vector &lt;string&gt; result; int status; }; struct parsedLog { string result; int status; }; class Log { public: int initialize(); int initialize(string text); Log (); Log (string text); ~Log(); bool isInitialized; int add(string text); int operator+= (string text); int clearLog (bool init = true); vector &lt;string&gt; getLog(); parsedLog getLog(string delim); private: bool initialized; vector &lt;string&gt; actionLog; static int count; string countString(); }; #endif /* LOG_H_ */ </code></pre> <h3>ui.cppp</h3> <pre><code>/* * Created on: Apr 26, 2011 * ui.cpp * Author: wjc */ #include &lt;iostream&gt; #include &lt;vector&gt; #include &lt;sstream&gt; #include "filedaemon.h" #include "vsystem.h" #include "customio.h" #include "building.h" #include "log.h" using namespace std; bool shouldexit = false; bool back = false; int selection; void addShape(); void modifyVars(); struct getVarResult { var result; int status; }; Log actionLog; var novar = {"ERROR", -1, Reserved}; getVarResult getVar(int type); void viewBuilding(); int runUI(){ while (!shouldexit){ cout&lt;&lt;"Please select an item from the list below and press Enter:"&lt;&lt;endl; const int mmenuLength = 2; string mmenuOptions[2] = {"Create a new document","Quit"}; for (int i=0; i&lt;2; i++){ cout&lt;&lt;i+1&lt;&lt;": "&lt;&lt;mmenuOptions[i]&lt;&lt;endl; } cout&lt;&lt;endl; selection = getMenuItem(1,mmenuLength); if (selection == mmenuLength) return 0; // Quit if it's the last one cout&lt;&lt;"Enter a name for your building:"&lt;&lt;endl; string buildingTitle; getline(cin, buildingTitle); Building b(buildingTitle); actionLog += "New building " + buildingTitle + " created."; const int bmenuLength = 5; string bmenuOptions[5] = {"Add shape","Modify variables","View building","View log","Quit"}; for (int i=0; i&lt;bmenuLength; i++){ cout&lt;&lt;i+1&lt;&lt;": "&lt;&lt;bmenuOptions[i]&lt;&lt;endl; } cout&lt;&lt;endl; selection = getMenuItem(1,bmenuLength); switch (selection){ case 1: // Add a shape break; case 2: modifyVars(); break; case 3: // View building break; case 4: { parsedLog parsed = actionLog.getLog("\n"); if (parsed.status == SUCCESS) { cout&lt;&lt;"The following contains the contents of your action log."&lt;&lt;endl; cout&lt;&lt;parsed.result&lt;&lt;endl&lt;&lt;endl; } else { cout&lt;&lt;"Somehow your log is not initialized."&lt;&lt;endl&lt;&lt;endl; } } break; case 5: shouldexit = true; break; default: cout&lt;&lt;"You entered a number greater than "&lt;&lt;bmenuLength&lt;&lt;" or less than 1. How you did this is a mystery."&lt;&lt;endl&lt;&lt;"[ Press Enter to exit ]"&lt;&lt;endl; string temp; getline(cin, temp); return 0; } // The following commented-out block is a // test of the variable storing system. // It will not be used in any final products. /*cout &lt;&lt; " Variable Systems Test "&lt;&lt;endl; cout &lt;&lt; "~~~~~~~~~~~~~~~~~~~~~~~~~~~"&lt;&lt;endl; cout &lt;&lt; endl; cout&lt;&lt;"Enter a variable name:"&lt;&lt;endl; string varname; cin&gt;&gt;varname; cout&lt;&lt;"Enter a value (A FLOAT!):"&lt;&lt;endl; float value; cin&gt;&gt;value; cout&lt;&lt;"Checking to see if "&lt;&lt;varname&lt;&lt;" exists."&lt;&lt;endl; bool alreadythere = checkVar(varname); alreadythere ? cout&lt;&lt;"It exists!"&lt;&lt;endl : cout&lt;&lt;"It doesn't exist."&lt;&lt;endl; if (alreadythere){ cout&lt;&lt;"Changing variable. Function returned "&lt;&lt;changeVar(varname, value)&lt;&lt;endl; } else { cout&lt;&lt;"Setting variable. Function returned "&lt;&lt;addVar(varname, value)&lt;&lt;endl; } cout&lt;&lt;"Enter a variable to check:"&lt;&lt;endl; string varcheck; cin&gt;&gt;varcheck; fetchResult result = fetchVar(varcheck); if(! result.good){ cout&lt;&lt;"Variable \""&lt;&lt;varcheck&lt;&lt;"\" doesn't exist!"&lt;&lt;endl; } else { cout&lt;&lt;"Variable \""&lt;&lt;varcheck&lt;&lt;"\" is equal to "&lt;&lt;result.result&lt;&lt;endl; } cout&lt;&lt;getVarList("\n","\t")&lt;&lt;endl; string exitstr; getch;*/ } return 0; } void modifyVars(){ while (! back){ cout&lt;&lt;"These are your defined variables."&lt;&lt;endl; cout&lt;&lt;"Reserved variables have an asterisk preceding them."&lt;&lt;endl; vector &lt;var&gt; vars = getVarList(); for (unsigned int i = 0; i&lt;vars.size(); i++){ cout&lt;&lt;endl; vars[i].reserved ? cout&lt;&lt;" * " : cout&lt;&lt;" "; cout &lt;&lt; vars[i].name&lt;&lt;" = "; cout&lt;&lt;fixed&lt;&lt;vars[i].value; }cout&lt;&lt;endl; cout&lt;&lt;"What would you like to do?"&lt;&lt;endl; string varMenuOptions[4] = {"Add a variable","Change a variable","Remove a variable","Go back"}; for (int i = 0; i&lt;4; i++){ cout&lt;&lt;i+1&lt;&lt;". "&lt;&lt;varMenuOptions[i]&lt;&lt;endl; } cout&lt;&lt;endl; selection = getMenuItem(1,3); switch(selection){ case 1: // Add variable { getVarResult gvr = getVar(ADD); if (gvr.status == SUCCESS) addVar(gvr.result.name, gvr.result.value, UserDefined); break; } case 2: // Change variable { getVarResult gvr = getVar(CHANGE); if (gvr.status == SUCCESS) changeVar(gvr.result.name, gvr.result.value); break; } // switch (selection) } // while (!back) } } getVarResult getVar(int type){ getVarResult finalResult; getVarResult invalidType; getVarResult cancelled; invalidType.result = novar; invalidType.status = INVALID_TYPE; cancelled.result = novar; cancelled.status = USER_CANCELLED; if (type != ADD &amp;&amp; type != CHANGE) return invalidType; bool usercancelled = false; bool nameOK = true; bool varIsReserved = false; string varName; do { switch(type){ case ADD: if (!nameOK) cout&lt;&lt;"That variable already exists."&lt;&lt;endl; break; case CHANGE: if (!nameOK) cout&lt;&lt;"That variable has not yet been created."&lt;&lt;endl; if (varIsReserved) cout&lt;&lt;"That variable is used by the system and cannot be changed."&lt;&lt;endl; break; } cout&lt;&lt;"Enter the variable's name, or \"BACK\": "; varName = getString(1,16); if (varName == "BACK"){ usercancelled = true; break; } fetchResult testExist = fetchVar(varName); switch(type){ case ADD: nameOK = !testExist.good; break; case CHANGE: nameOK = testExist.good; varIsReserved = testExist.reserved; break; default: cout &lt;&lt; "Function error - int type seems to have changed since user called getVar(int type)."&lt;&lt;endl; cout &lt;&lt; "[ Press Enter to exit]"&lt;&lt;endl; string temp; getline(cin, temp); return invalidType; } } while (! nameOK || varIsReserved); finalResult.result.name = varName; if (usercancelled) return cancelled; bool valueOK = true; float numValue; do { if (! valueOK) cout&lt;&lt;"That doesn't seem to be a valid positive number."; cout&lt;&lt;"Enter the new value, or \"COPY\" to copy a variable, or \"BACK\":"&lt;&lt;endl; string value = getString(); /* * If "BACK" then break do-while(! valueOK) */ if (value == "BACK"){ usercancelled = true; break; } if(value == "COPY"){ string copyVar; fetchResult varContents; bool copyOK = true; do { if (!copyOK) cout&lt;&lt;"That variable does not exist. Note that names are case-sensitive."&lt;&lt;endl; cout&lt;&lt;"Enter the variable to copy, \"VIEW\" to view all, or \"BACK\":"&lt;&lt;endl; /* * If "BACK" then break do-while(! valueOK) */ if (value == "BACK"){ usercancelled = true; break; } copyVar = getString(1,8); if (copyVar == "VIEW") { cout&lt;&lt;"Your current variables are as follows:"&lt;&lt;endl; vector &lt;var&gt; vars = getVarList(); for (unsigned int i = 0; i&lt;vars.size(); i++){ cout&lt;&lt;endl; vars[i].reserved ? cout&lt;&lt;" * " : cout&lt;&lt;" "; cout &lt;&lt; vars[i].name&lt;&lt;" = "; cout&lt;&lt;fixed&lt;&lt;vars[i].value; }cout&lt;&lt;endl; } else { varContents = fetchVar(copyVar); copyOK = varContents.good; numValue = varContents.result; } } while (copyVar == "VIEW" || ! copyOK); } else { // This code converts from string to number safely. stringstream testStream(value); if (! (testStream &gt;&gt; numValue)) valueOK = false; } if (! usercancelled) break; } while (! valueOK); finalResult.result.value = numValue; if (usercancelled) return cancelled; finalResult.status = SUCCESS; return finalResult; } </code></pre> <h3>ui.h</h3> <pre><code>/* * ui.h * * Created on: Apr 26, 2011 * Author: wjc */ #ifndef UI_H_ #define UI_H_ #include "vsystem.h" int runUI(); void addShape(); void modifyVars(); struct getVarResult { var result; int status; }; getVarResult getVar(int type); void viewBuilding(); #endif /* UI_H_ */ </code></pre> <h3>building.h</h3> <pre><code>/* * building.h * * Created on: Apr 30, 2011 * Author: wjc */ #ifndef BUILDING_H_ #define BUILDING_H_ #include &lt;string&gt; #include &lt;vector&gt; #include "consts.h" #include "solid_type.h" using namespace std; struct dimension { bool exists; float value; }; class Solid { public: string name; string comment; solid_type type; bool positive; dimension dim1; // Radius, width, or side length dimension dim2; // Height, number of sides, or fraction of sphere_over_n dimension dim3; // Width - only for prism_rect, pyrm_rect and tprym_rect Solid (); Solid (bool pos); Solid (string setName, string setComment, solid_type setType, bool setPos, dimension setDim1, dimension setDim2, dimension setDim3); ~Solid(); int countShapes(); int howMany(); private: static int count; }; class Building { private: string name; vector &lt;Solid&gt; components; public: Building(string text); void setName(string text); string getName(); vector &lt;Solid&gt; addComponent(Solid component); }; #endif /* BUILDING_H_ */ </code></pre> <h3>building.cpp</h3> <pre><code>/* * building.cpp * * Created on: May 1, 2011 * Author: wjc */ #include &lt;string&gt; #include &lt;vector&gt; #include "consts.h" #include "solid_type.h" using namespace std; struct dimension { bool exists; float value; }; class Solid{ public: string name; // So the user can look at the log string comment; // Expanded version of name, again for the log solid_type type; // Determines the type of Solid bool positive; // Positive = addition; negative = subtraction dimension dim1; // Radius, width, or side length dimension dim2; // Height, number of sides, or fraction of sphere_over_n dimension dim3; // Width - only for prism_rect, pyrm_rect and tprym_rect Solid(){ count++; } Solid(bool setPos){ count++; positive = setPos; } Solid (string setName, string setComment, solid_type setType, bool setPos, dimension setDim1, dimension setDim2, dimension setDim3){ count++; name = setName; comment = setComment; type = setType; positive = setPos; dim1 = setDim1; dim2 = setDim2; dim3 = setDim3; } ~Solid(){ count--; } int howMany(){ return count; } int countSolids(){ return howMany(); } private: static int count; // Number of Solids in existence }; class Building { private: string name; vector &lt;Solid&gt; components; public: Building (string text){ setName(text); } void setName(string text) { name = text; } string getName(){ return name; } vector &lt;Solid&gt; addComponent(Solid component){ components.push_back(component); return components; } }; </code></pre> <p>My complete code is available at <a href="http://bit.ly/kXMKVy" rel="nofollow">FileDropper</a>, although I know most people won't want to unpack a zip, so I put the relevant ones above. Any help would be greatly appreciated!</p> <p>Running Eclipse Helios with G++ 4.2.1 on Mac OS X Snow Leopard 10.6.7.</p> <hr> <p>The complete linking command is:</p> <pre><code>g++ -o "BuildingGenerator" ./src/bgmath.o ./src/building.o ./src/customio.o \ ./src/filedaemon.o ./src/log.o ./src/main.o ./src/ui.o ./src/vsystem.o </code></pre> <p>So it looks like it is linking all the necessary files. Also, the (header) files are all <code>#include</code>'d where needed.</p>
 

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