I realise this i mighty popular question, but all of the other posts seem to follow the same idea. That the include, lib and bin folder need to be correctly configured. I believe my settings are correct, but i am still getting the LNK2019 error. What am i doing wrong?
Using Visual Studio 2012
I am getting the infamous LNK2019 error. Many posts of this issue seem to think it is a linker issue. I am using a library with lib and dll files. The project folder has an include, bin and lib folder that need to be configured in the project.
Install instructions are here.....
http://opensource.mlba-team.de/xdispatch/docs/current/tutorial.html
However, this is clearly a linker issue as it occurs in other libraries of a similar type. I have followed the instructions for other posts and i'm still a bit lost. I believe this should be correct, but i have tried virtually every possible combination. Don't get it.
My Project Configurations
C++ -> General -> Additional Include Directories.
C:\Users\Daniel\Documents\Visual Studio 2012\Projects\LibDispatchTest\xdispatch_0.7.2_Visual Studio 10_i386\include;%(AdditionalIncludeDirectories)
Linker -> General -> Additional Library Directories
C:\Users\Daniel\Documents\Visual Studio 2012\Projects\LibDispatchTest\xdispatch_0.7.2_Visual Studio 10_i386\lib;%(AdditionalLibraryDirectories)
Linker -> Input -> Additional Dependancies:
.....uuid.lib;odbc32.lib;odbccp32.lib;xdispatch.lib;%(AdditionalDependencies)
Environment Variables.
I have the PATH variable set.
C:\Chocolatey\bin;C:\Users\Daniel\Documents\Visual Studio 2012\Projects\VisionBase\xdispatch_0.7.2_Visual Studio 10_i386\bin;
The error messages are:
error LNK2019: unresolved external symbol "_declspec(dllimport) public: void __thiscall xdispatch::queue::async(class std::function<void __cdecl(void)> const &)" (__imp?async@queue@xdispatch@@QAEXABV?$function@$$A6AXXZ@std@@@Z) referenced in function "void __cdecl some_function(void)" (?some_function@@YAXXZ) c:\Users\Daniel\documents\visual studio 2012\Projects\LibDispatchTest\LibDispatchTest\main.obj LibDispatchTest
error LNK1120: 1 unresolved externals c:\users\daniel\documents\visual studio 2012\Projects\LibDispatchTest\Debug\LibDispatchTest.exe 1 1 LibDispatchTest
Seriously, am totally lost and i do not see what i am doing wrong here.
EDIT 1
This is similar to a sample from the above link, but modified to just couNT 1000000^2 and print some stuff. We just want to be able to compile and run this sample and i can correct my larger project exhibiting this issue. This project was made fresh with the simplest code that is representative of what i need to get working. Both this sample and my other project have this problem and produce the same error.
#include <xdispatch/dispatch>
#include <vector>
#include <cmath>
class SomeData {
public:
std::vector<double> a;
std::vector<double> b;
std::vector<double> c;
std::vector<double> results;
};
void do_calculations(SomeData* sd){
// our output will go in here
sd->results = std::vector<double>(sd->a.size());
// the calculation - running on one thread only
for(unsigned int i = 0; i < 1000000; i++){
sd->results[i] = 0;
for(unsigned int j = 0; j < 10000000; j++){
for(unsigned int z = 0; z < sd->c.size(); z++){
std::cout << i << " " << j << std::endl;
}
}
} }
/* This function is getting called from your main thread also powering the user interface */
void some_function() {
SomeData* sd = new SomeData();
xdispatch::global_queue().async(${
// execute the heavy code
do_calculations(sd);
}); }
int main() {
some_function();
return 0; }
Is anyone able to help?