C++ :: Linking 3rd Party Library To Existing Project - Unresolved Externals
Jan 14, 2013
I am trying to add in a few 3rd party libraries to an existing project solution. I have no source code or knowledge on how the libraries were built (i.e. what run-time library was used). I have recieved the following errors and warnings:
1>CAPS_LIB.lib(PCEfunc.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance
1>libcmt.lib(getenv.obj) : error LNK2005: _getenv_s already defined in MSVCRT.lib(MSVCR90.dll) ***There are multiple of these errors
1>LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1>MSVCRT.lib(cinitexe.obj) : warning LNK4098: defaultlib 'libcmt.lib' conflicts with use of other libs; use /NODEFAULTLIB:library
1>libcmt.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
1>C:Program Files (x86)BCI 2000 v3progRelWithDebInfo..CAPSVRInterface.exe : fatal error LNK1120: 1 unresolved externals
CAPS_LIB.lib is one of the libraries I am trying to add in and it seems to be the one causing the problem. I believe I have added in all three libraries into the project solution correctly, but I can't seem to find a solution to these errors.
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Dec 21, 2012
Code:
// declaration
template<class T>
class GetValue {
void Initialize(std::string fileName);
};
[Code] ....
I understood that GetValue<D3DXVECTOR3>::Initialize was not defined.
How can I reuse the GetValue::Initialize method in every derived classes from GetValue, such as GetD3DXVECTOR3, GetD3DXMATRIX, GetOpenGLVector3 etc ...
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Mar 6, 2013
My code won't run properly. The error says unresolved externals.
#include <iostream>
#include <cstring>
using namespace std;
char again;
void reverse(char*);
[Code] ....
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Feb 13, 2013
My goal is accessing c++ objects within c by using wrapper and externals. To get the pointer to the c++ object I use a type "void *".
But i get an error while linking: undefined reference to "create_mycpp".
Should I take an other way to access c++ objects?
Code:
//-------------------------------------
//mycpp.cpp
#include "mycpp.h"
Mycpp::void func(int i)
{
i += 1;
[Code] ....
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Jul 8, 2013
Assignment: Design a class to store measurements. The class should have two data items, feet and inches, both integers. The class must make sure that the number of inches never gets below zero or above 11. If inches is outside that range, adjust feet accordingly. (Yes this means feet might be a negative number.)
Create a default constructor and one which receives one integer, a number of inches.
Overload the following operators: addition, subtraction, equality, inequality, incrementation (both pre and post) (should add one to inches), and output (in the form of: F’I”)
Code:
#include <iostream>
using namespace std;
class measurements {
private:
int inches;
double feet;
[Code] ....
I am getting a LNK2019 error and an LNK1120 errors:
Error 1 error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup
Error 2 error LNK1120: 1 unresolved externals
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Jan 19, 2014
I'm trying to make colors transparent in c++ using a 3rd party library. I've successful made my background transparent but I feel I'm cheating by not understanding how I entered the value.
"0xff, 0xff, 0xff" is the color white but i'm not sure how it's the color white like with RGB values.
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Dec 28, 2011
I have a project C# and i want to build it to .dll for use in ASP.Net project . Any way to do it. It look like my attachments image .
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Oct 7, 2014
I am trying to refresh my memory here as I did some studies many years ago but the results elude me.Also todays c/c++ compilers may have better optimizations.Say I have a static library that includes three obj modules.Each of these object modules has a number of functions. These functions do not reference any other functions within the obj module.My main app links this library but only references one function from each of the object modules.
Question: Are the complete contents of each module linked into my main app or are todays linkers smart enough to just link the functions used?
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Jun 20, 2013
I have a libcx3d.a which contains my VrmlParser class and other classes which are used by VrmlParser. I have a main.cpp which does this :
VrmlParser vp = new VrmlParser();
double **VOB = vp.getVOB();
When I compile using g++ main.cpp -o main -L. -lcx3d, I get the following errors :
'VrmlParser' was not declared in this scope.
expected ';' before vp.
'vp' was not declared in this scope.
There is a header file called "VrmlParser.h" in the static library. Should I include this header file in main.cpp ? If so, will include "VrmlParser.h" work ? I have the .a and .cpp in the same directory. I can't find the header file for the static library.
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Jul 16, 2014
I have built a static library that contains a macro. From a separate exe, I am calling this macro, but it doesn't work.
The compilation of the static library and that of the exe went okay.
Static lib contains just the macro definition.
Exe contains call to this macro.
Is there anything else that I need to do for this to work?
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Dec 17, 2014
I have written a program that uses boost in visual studio 2012. The only boost library I used is filesystem by doing.
1)Properties->Linker->General and adding the path or the .lib to the additional dependencies. The libraries, link at compile time.However when i move the exe to a different computer, it doesn't work. Therefore the libraries were dynamically not statically linked. So my question is how do I statically link the filesystem library, so that i can include boost/filesystem.hpp in visual studio 2012?
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Jan 17, 2014
I am trying to use the C++ version of VOCE voice recognition API. It is an API built in Java, with support to C++ as well.
It works totally fine when I am working with VC2010. In vc2010 I have put all the necessary include files in the Vc++ Directories->Include Directories, and the library D:Program FilesJavajdk1.7.0_45lib in Linker->Additional Library Directories, and i added jvm.lib in Linker->input And everything works great
However, whenever I am trying to execute it in Qt, I am getting the error:
Code:
thread.obj:-1: error: LNK2019: unresolved external symbol __imp__JNI_CreateJavaVM@12 referenced in function
"void __cdecl voce::init(class std::basic_string<char,struct std::char_traits<char>,
class std::allocator<char> > const &,bool,bool,class std::basic_string<char,struct std::char_traits<char>,
[Code] ......
This is my .pro content:
Code:
QT + = core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = ProjectX
TEMPLATE = app
[Code] .....
How can I get rid of this error? I am using QT, the latest version which use the Visual c++ 2010 compiler.
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Feb 16, 2012
I am trying to build an application that has one static library dependency, however I am getting this error when linking:
1>ClCompile:
1> All outputs are up-to-date.
1>LINK : fatal error LNK1104: cannot open file 'TestWrapperLib.obj'
Why I might be getting that? I have the .lib in the depends line, and the directory where it is at in the include line.
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Mar 11, 2013
I am running ubuntu and have tried adding -1GL to the end of my gcc compiling commands but the error says "unrecognized commandline option: 1GL". do i have to install any packages to get this to work?
Its supposed to be an l not a 1.
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Mar 4, 2013
I have to edit 4-5 lines in the debug, and then 5 lines in release for each of my little project's properties.
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Feb 18, 2012
So, I have spent the last week looking googling and researching how to get a standalone copy of the regex part of the boost library to work in a project. This project will be compiled on other machines and I CANNOT have the user install it.
Is there any way to do this?
So far, I have built the regex part: I have both .so files and .a files built. The thing that I'm unsure of is that these were built with gcc and I am using/will be using g++.
I have also finally got the bcp tool to work, and extracted the regex part and all of its dependencies.
I can't get it to compile any way I try to work it. I need this to be in a folder "regex/" folder in my directory.
I have used too many commands to paste them all, but the last I tried was this:
g++ -g -pedantic -Wall -o doit test.C -Iregex/boost/ -Wl,-Lregex/libs/regex/build/gcc/ -static -lboost_regex-gcc-1_47
I have also tried many variations of the above command. Such as using -lboost_regex and lots of other things. Is my whole problem because I'm using an .so built by GCC?
The output of the above command was
/usr/lib/gcc/i686-linux-gnu/4.6.1/libstdc++.a(eh_alloc.o): In function `__cxa_allocate_exception':
(.text.__cxa_allocate_exception+0xb4): undefined reference to `pthread_mutex_lock'
/usr/lib/gcc/i686-linux-gnu/4.6.1/libstdc++.a(eh_alloc.o): In function `__cxa_allocate_exception':
(.text.__cxa_allocate_exception+0x111): undefined reference to `pthread_mutex_unlock'
/usr/lib/gcc/i686-linux-gnu/4.6.1/libstdc++.a(eh_alloc.o): In function `__cxa_free_exception':
[Code]...
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Jul 10, 2013
My program will not run because of error LNK2028 "unresolved token" and error LNK2019 "unresolved external signal" and I do not know why. My teacher says that I need to make the constructor and display functions display class variables in different formats, but I do not know what to do with that. Here are my 3 files:
Header take 2.h:
#pragma once
#include <iostream>
#include <string>
using namespace std;
class Heading {
private:
string company, report;
[Code] ....
Here are the errors:
Error1error LNK2028: unresolved token (0A0003C9) "public: __thiscall Heading::Heading(void)" (??0Heading@@$$FQAE@XZ) referenced in function "int __cdecl main(void)" (?main@@$$HYAHXZ)c:UsersOwnerdocumentsvisual studio 2012ProjectsClassLibrary2ClassLibrary2Source1.objClassLibrary2
[Code] ....
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May 8, 2014
How can I draw a sprite/graphic on the window of an third party application? E.g. I want to draw a graphic beneath each tab of Firefox for additional information. The position of the sprite needs to be relativ to the position of firefox, so if you move firefox, the sprite moves with it.
The solution needs to work on mac and pc. So I'll use a crossplatform framework like c++ boost or something.
Of course I can get the position and then just redraw it. But what's the best way to draw it?
Just found a tool which does what I need. Basically a HUD like this: [URL] .... The boxes with the numbers are what I need.
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Jan 22, 2014
I have a project which does a specific thing, like an open file dialog.
I would like to open it in a different project on a click of a button.
Also, It has a different namespace.
I'm guessing that it would involve a "using" statement to add the namespace And I will have to add reference to an *.exe or *.dll -> I'll have to look up how to make a *.dll, I know where the *.exe file is.
I have searched for a different things on Google, but I don't think that I am looking for the correct phrase (which is always frustrating...)
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Aug 5, 2014
#include <iostream>
#include<fstream>
using namespace std;
int main() {
string choice, meaning, word, yesOrno;
char add[20];
[code]....
i have done my best but i have still problem with searching words from previously saved words from user this code it keeps adding but it won't display when i search for.
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Jul 6, 2014
I'm trying to edit an existing xml file but with no luck. I'm new to xml environment.
This is the xml content :
<?xml version="1.0" encoding="UTF-8"?>
-<mmp>
<ID>aaa</ID>
<clientID>bbb</clientID>
<time>2004-05-10T17:35:41.29</time>
<session>2000</session>
<Answer>Yes</Answer>
-<Program>
<_id>ppp</id>
</mmp>
I'm trying to change the time and id values and can't do it.I tried almost anything.
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Dec 28, 2014
Let's say I have an exe-file (for example computer game) and need to forbid to run it until certain date or time during the day. Any 'manipulations' with file are allowed. offer me a simple way of how to encode/decode such a file?
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Mar 26, 2013
I have an array of char representing pixels in a bitmap, which I want to modify. I don't think I can just iterate over the array and pass chars into a function individually, because the function needs to take into account the neighboring pixels, too.
I thought of two ways to do this. The first would be to pass the array to the function as an argument, then have the function change it and return it. The trouble is I'm not exactly sure what happens internally when you pass an array to a function and return it. Is it the same array, modified? Or is it a copy of the array, so now you're using twice as much memory?
Alternatively I guess I could have a function with a void return type and pass a pointer to the array. I'm somewhat new to this, but the way I understand it is that a pointer is like the address of a house, while the array is the actual house. So if I give the function the address, it can go to that address and rearrange the furniture inside the house. Then, after the function returns, I can go to that address myself and see all the rearranged furniture, even though the function has already returned.
Is there a problem with the second way? It seems a bit neater, but maybe I'm understanding pointers wrong.
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Apr 17, 2012
I would like to get hold of the code for a function that takes a string as input argument and returns a numerical value, either integer or double, according to the the expression represented by the string. For example the string may look like this:
Code:
"(256 * d3 + d4) * factor - offset"
then the function would calculate the value of
Code:
(256 * d[3] + d[4]) * factor - offset
where d is an integer array, factor and offset are double or int variables or constants. For my application the name for the array can be fixed to be "d", and the names for other variables and constants are known. The closest thing I could find on-line is this:
[URL]
which only does literal integer calculations, no double, no variables or constants. Are there existing code that does what I need or do I have to write my own?
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Oct 5, 2013
adding a column in ms access database and update it with a value.Here is my code, it gives an error that says syntax error in field definition.
string myConn = " ";
myConn = "Provider=Microsoft.ACE.OLEDB.12.0;
Data Source=C:/Users/EmployeeAttendanceRegister/EmployeeAttendanceRegister.accdb";
OleDbConnection myCon = new OleDbConnection(myConn);
string myInsert = "ALTER TABLE Attendance ADD COLUMN SignIn" + dateTimePicker1.Value;
[Code] .....
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Apr 13, 2015
Is there some quick way of resetting the contents of an existing array to 0? Just to be clear, I'm not initializing the array, it already exists, has content and needs to be reset at 0. Is there a faster way than the code below?
Code:
for(i=0;i<100;i++)myarray[i]=0;
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