Added libxml2 depdency.

.gitignore

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+# Meson
+/subprojects/*
+!/subprojects/*.wrap
+build/**
+
+# VSCode
+.vscode

include/libxml.h

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+#ifndef _HEADER_MESONTEST_LIBXML
+#define _HEADER_MESONTEST_LIBXML
+
+void info_libxml(void);
+void create_xml(void);
+
+#endif // _HEADER_MESONTEST_LIBXML

meson.build

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+project('meson-test', 'cpp',
+  version : '0.1',
+  default_options : ['warning_level=3', 'cpp_std=c++11']
+)
+
+# Libraries
+libxml2_proj = subproject('libxml2', default_options: ['python=false', 'default_library=static'])
+libxml2_dep = libxml2_proj.get_variable('xml_dep')
+
+# Include directories
+incdir = include_directories('include')
+
+# Executable
+executable('mesontest',
+           'src/libxml.cpp',
+           'src/main.cpp',
+           dependencies: libxml2_dep,
+           include_directories : incdir
+)

src/libxml.cpp

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+#include "libxml.h"
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <iostream>
+
+void info_libxml(void)
+{
+    std::cout << "[LIBXML2]\tversion: " << LIBXML_DOTTED_VERSION << std::endl;
+}
+
+void create_xml(void)
+{
+    std::cout << "[LIBXML2]\tWriting basic .xml file..." << std::endl;
+    // Create new doc
+    xmlDocPtr doc = xmlNewDoc(BAD_CAST "1.0");
+    xmlNodePtr root_node = xmlNewNode(nullptr, BAD_CAST "root");
+    xmlDocSetRootElement(doc, root_node);
+
+    xmlNodePtr child1 = xmlNewChild(root_node, nullptr, BAD_CAST "child1", BAD_CAST "This is child 1");
+    xmlNewProp(child1, BAD_CAST "attribute", BAD_CAST "value");
+
+    // Save the document
+    const char* filename = "example.xml";
+    if (xmlSaveFormatFileEnc(filename, doc, "UTF-8", 1) != -1) {
+        std::cout << "[LIBXML2]\tXML file created successfully: " << filename << std::endl;
+    } else {
+        std::cerr << "LIBXML2]\tError saving XML file!" << std::endl;
+    }
+
+    // Clean up
+    xmlFreeDoc(doc);
+    xmlCleanupParser();
+}

src/main.cpp

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+#include <iostream>
+
+#include "libxml.h"
+
+int main(void)
+{
+    try
+    {
+        std::cout << "Libxml2 Test..." << std::endl;
+        info_libxml();
+        create_xml();
+        std::cout << "Enter any key to quit the program\n> ";
+        std::cin.ignore();
+    }
+    catch (const std::exception &ex)
+    {
+        std::cerr << "\033[0;31m[ ERR]:\t" << ex.what() << "\033[0m" << std::flush;
+    }
+    return 0;
+}

subprojects/libxml2.wrap

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+[wrap-file]
+directory = libxml2-2.13.6
+source_url = https://download.gnome.org/sources/libxml2/2.13/libxml2-2.13.6.tar.xz
+source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/libxml2_2.13.6-1/libxml2-2.13.6.tar.xz
+source_filename = libxml2-2.13.6.tar.xz
+source_hash = f453480307524968f7a04ec65e64f2a83a825973bcd260a2e7691be82ae70c96
+wrapdb_version = 2.13.6-1
+
+[provide]
+libxml-2.0 = xml_dep