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I'm trying to write a simple Qt Widget Application that allows me to read and write .XMP files using Qt framework && Adobe XMP SDK on OS X 10.10.

I'm a rookie and by no means proffesional in C++ (and have basic/intermediate self-taught knowledge of C++ and Qt, which means I'm dependent on google when trying to do something and sometimes end up using bad habits or code that can be simplified)

  1. I have downloaded and built the XMP SDK from Adobe and built part of the examples

(for some reason or another I have not been able to build the other ones, but that's not that important right now).

  1. I have built the static 64bit version of the libraries (libXMPCoreStatic.a && libXMPFilesStatic.h)

  2. Together with the include folder from the public folder I've placed them in my Qt Widget App project's folder into subfolder Framework

  3. I have linked the libraries to my project (in my .pro file):

    LIBS += -L$$PWD/XMPFramework/ -lXMPCoreStatic
LIBS += -lXMPFilesStatic

INCLUDEPATH += $$PWD/XMPFramework/include/
DEPENDPATH += $$PWD/XMPFramework/

PRE_TARGETDEPS += $$PWD/XMPFramework/libXMPCoreStatic.a
PRE_TARGETDEPS += $$PWD/XMPFramework/libXMPFilesStatic.a

  4. I have included the XMP in my app (basic app just for testing if I can connect and use some basics of XMP SDK) - mainwindow.cpp :

    #include "mainwindow.h"
#include "ui_mainwindow.h"
#include <cstdio>
#include <string>
#include <cstring>

#define MAC_ENV 1 //don't know why, but when I don't explicitly
                  //define this, then the app won't build

// Must be defined to instantiate template classes
//#define TXMP_STRING_TYPE std::string

//when used, I get whole range of errors, there's a sample at the end of the question

// Must be defined to give access to XMPFiles
#define XMP_INCLUDE_XMPFILES 1

#include <XMP.incl_cpp> //XMP INCLUDE
#include <XMP.hpp>      //XMP INCLUDE

MainWindow::MainWindow(QWidget *parent) :
            QMainWindow(parent),
            ui(new Ui::MainWindow)
{
   ui->setupUi(this);


   //this if is taken from the sample code
   //for the SDK, the problem is that
   //my project does not know the SXMPMeta
   //but seems to know at least part of the SDK
   //because at least part of the classes and methods
   //are visible through the intellisense
   if(!SXMPMeta::Initialize())
   {
      //the project does not react to SXMPMeta
      //and does not know it, even though the
      //XCode project I've built from the SDK's samples
      //seems to be ok
      ...
   }
}

...the rest omitted for brevity...

    Do you see some mistakes i've made or the reason the SXMPMeta class is not present?

Sample of the errors I get when I try to use #define TXMP_STRING_TYPE std::string. My thought is that it has something to do with the initialization of the templated XMP classes

Undefined symbols for architecture x86_64:
  "_CFBundleCopyExecutableArchitectures", referenced from:
      XMP_PLUGIN::IsValidLibrary(std::string const&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFBundleCopyResourceURL", referenced from:
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFBundleCreate", referenced from:
      XMP_PLUGIN::IsValidLibrary(std::string const&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::LoadModule(std::string const&, bool) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFBundleGetFunctionPointerForName", referenced from:
      XMP_PLUGIN::GetFunctionPointerFromModuleImpl(__CFBundle*, char const*) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFBundleIsExecutableLoaded", referenced from:
      XMP_PLUGIN::LoadModule(std::string const&, bool) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFBundleLoadExecutableAndReturnError", referenced from:
      XMP_PLUGIN::LoadModule(std::string const&, bool) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFDataGetBytes", referenced from:
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFNumberGetValue", referenced from:
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFRelease", referenced from:
      XMP_PLUGIN::IsValidLibrary(std::string const&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::LoadModule(std::string const&, bool) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::UnloadModule(__CFBundle*, bool) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::GetFunctionPointerFromModuleImpl(__CFBundle*, char const*) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFStringCreateWithCString", referenced from:
      XMP_PLUGIN::GetFunctionPointerFromModuleImpl(__CFBundle*, char const*) in libXMPFilesStatic.a(OS_Utils_Mac.o)
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFURLCreateDataAndPropertiesFromResource", referenced from:
      XMP_PLUGIN::GetResourceDataFromModule(__CFBundle*, std::string const&, std::string const&, std::string&) in libXMPFilesStatic.a(OS_Utils_Mac.o)
  "_CFURLCreateFromFileSystemRepresentation", referenced from:
      XMP_PLUGIN::IsValidLibrary(std::string const&) in libXMPFilesStatic.a(OS_Utils_Mac.o)

When executing step 'Make'
mishan
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1 Answers1

0

TXMPFiles is a template. SXMPFiles is TXMPFiles<std::string>. Following code is present in the beginning of one of XMP Toolkit 2016.07 examples:

// Must be defined to instantiate template classes
#define TXMP_STRING_TYPE std::string 

// Must be defined to give access to XMPFiles
#define XMP_INCLUDE_XMPFILES 1 

// Ensure XMP templates are instantiated
#include "public/include/XMP.incl_cpp"

// Provide access to the API
#include "public/include/XMP.hpp"
Euri Pinhollow
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