Create xml file using c program in msys2 environment

Applications
1

I’ve installed xml library using the command pacman -S libxml2 in msys2 terminal
in MINGW64 terminal,
I’ve written a small piece of code to create xml file

#include<tree.h>

int main()
{
        xmlNodePtr root_node = xmlNewNode(NULL, (xmlChar const *)"MY_root_Node");
        xmlDocPtr doc = xmlNewDoc( (const xmlChar *)"1.0" );
        xmlDocSetRootElement( doc, root_node );
        xmlNewChild( root_node, NULL, (xmlChar*)"for_learning", "value" );
        xmlSaveFormatFileEnc( "mylearning.xml", doc, "UTF-8", 1 );
        xmlFreeDoc( doc );
        xmlCleanupParser();
}

while trying to compile I’m seeing the following error


DELL@Lokesh-Windows MINGW64 ~
$ gcc two.c -lxml2
two.c:1:9: fatal error: tree.h: No such file or directory
    1 | #include<tree.h>
      |         ^~~~~~~~
compilation terminated.

In entire /usr directory, there is no tree.h file.

can someone please help me how to compile this program.

thanks.

2

Hi,

libxml2 is the cygwin package.
When working with mingw64, please install the mingw version:

pacman -S mingw-w64-x86_64-libxml2
3

By the way, it should be:

#include <libxml/tree.h>
4

This should give you the required compiler and linker flags:

pkg-config --cflags libxml-2.0
pkg-config --libs libxml-2.0

Also see the FAQ.

5

thanks.
I’m able to compile the code and execute as well.

in Linux, we used to see the folder libxml in /usr/include
whereas here there is no such folder in /usr/include

the reason I’m asking is I’m using openssl library as well and I’m not able to compile because of this error :

 fatal error: openssl/ssl.h: No such file or directory
    4 | #include<openssl/ssl.h>

I’ve already installed pacman -S mingw-w64-clang-x86_64-openssl

6

You must install mingw-w64-x86_64-openssl instead of mingw-w64-clang-x86_64-openssl, for consistency.

On Windows with MSYS2, there are several runtimes available:

  • a cygwin runtime, only used for basic core tools, installed under /usr
  • a mingw64 one (the one you are using), installed under /mingw64
  • there are also mingw32, clang, ucrt64 runtimes. They use different runtimes and standard libraries.

When developing for mingw64, headers are expected to be under /mingw64/include/.
Other runtimes will use other include paths.