[SOLVED]libxml/xmlexports.h : No such file or directory

[heatblazer]

Hello, recently I am following the example for libxml from their official site. The strange error that qtcreator reports is :
@#ifndef XML_VERSION_H
#define XML_VERSION_H

#include <libxml/xmlexports.h>

#ifdef __cplusplus
extern "C" {
#endif

/*

• use those to be sure nothing nasty will happen if
• your library and includes mismatch
  /
  #ifndef LIBXML2_COMPILING_MSCCDEF
  XMLPUBFUN void XMLCALL xmlCheckVersion(int version); // ERROR HERE
  #endif / LIBXML2_COMPILING_MSCCDEF */
  @
  But I am sure the header is present in usr/include, Ive less-ed it and double checked for it, also intellisense or autocomplete (not sure how you call it) show all libxml funcions. Ive read this topic :
  https://stackoverflow.com/questions/5636144/error-libxml-parser-h-no-such-file-or-directory/5981599#5981599 but here this does not fix the issue. Here are my includes, or more like the whole example I am following:
  @#include <libxml2/libxml/tree.h>
  #include <libxml2/libxml/parser.h>
  #include <libxml2/libxml/xmlversion.h>
  #include <libxml2/libxml/xmlexports.h>

#include <stdio.h>

static const char* document = "<quiz />";

static void exampleXMLParse(const char*, int);

int main(void) {
LIBXML_TEST_VERSION
exampleXMLParse(document, 6);
xmlCleanupParser();
return(0);
}

static void exampleXMLParse(const char *content, int length) {
xmlDocPtr doc;
doc = xmlReadMemory(content, length, "TestXML.xml", NULL, 0);
if ( ! doc ) {
fprintf(stderr, "ERROR READING %s \n", "TestXML");
return;
}
xmlFreeDoc(doc);
}
@
Any info ?

[SGaist]

Hi,

Did you add:

@INCLUDE += /usr/include/libxml2@

to your pro file ?

[heatblazer]

Hello, thanks, just did but I got the following errno:
(assuming the above code)
@
undefined reference to 'xmlCheckVersion'
undefined reference to 'xmlReadMemory'
undefined reference to 'xmlFreeDoc'
undefined reference to 'xmlCleanupParser'
@

Here is my pro. file:
@
#-------------------------------------------------

Project created by QtCreator 2014-07-05T12:46:42

#-------------------------------------------------

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = DirectoryDeleter
TEMPLATE = app
INCLUDEPATH += /usr/include/libxml2

SOURCES += main.cpp
DirectoryDeleter.cpp
Worker.cpp
Daemon.cpp
xmltest.cpp #added for testing

HEADERS +=
DirectoryDeleter.h
Worker.h
Daemon.h

@

Ive cleaned the project, ran qMake form qtcreator, build it again then tried to run... this is the issue. [EDIT] Ive searched for INCLUDE tag but the qtcreator offered INCLUDEPATH and include() ... I guess INCLUDEPATH replaces INCLUDE so I think I`ve did it rigth.

[SGaist]

You are not linking to libxml2

You need to add

@LIBS += -lxml2@

To your pro file

[heatblazer]

Thank you so much. I had no idea this is manually done. In gcc I was adding the -lxml2 and it was OK, but no idea the pro. needed it. Thank you again - you were a lifesaver :)

[SGaist]

Qt can't guess your external dependencies ;)

You're welcome !

Since it's all working now, please update the thread title prepending [solved] so other forum users may know a solution has been found :)