Remove libxml2 from augeas headers

libraries/cmake/source/augeas/CMakeLists.txt

@@ -6,7 +6,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR GPL-2.0-only)
 
 function(augeasMain)
-  set(library_root "${CMAKE_CURRENT_SOURCE_DIR}/src")
+  set(library_root "${OSQUERY_augeas_ROOT_DIR}")
 
   if(PLATFORM_LINUX)
     set(generated_include_headers_path

libraries/cmake/source/augeas/patches/src/remove-libxml2-dep.patch

@@ -0,0 +1,32 @@
+diff --git a/src/augeas.h b/src/augeas.h
+index 228a67ac..abc1b663 100644
+--- a/src/augeas.h
++++ b/src/augeas.h
+@@ -21,7 +21,6 @@
+  */
+
+ #include <stdio.h>
+-#include <libxml/tree.h>
+
+ #ifndef AUGEAS_H_
+ #define AUGEAS_H_
+@@ -412,19 +411,6 @@ int aug_print(const augeas *aug, FILE *out, const char *path);
+  */
+ int aug_source(const augeas *aug, const char *path, char **file_path);
+
+-/* Function: aug_to_xml
+- *
+- * Turn the Augeas tree(s) matching PATH into an XML tree XMLDOC. The
+- * parameter FLAGS is currently unused and must be set to 0.
+- *
+- * Returns:
+- * 0 on success, or a negative value on failure
+- *
+- * In case of failure, *xmldoc is set to NULL
+- */
+-int aug_to_xml(const augeas *aug, const char *path, xmlNode **xmldoc,
+-               unsigned int flags);
+-
+ /*
+  * Function: aug_transform
+  *

libraries/cmake/source/modules/Findaugeas.cmake

@@ -19,4 +19,6 @@ importSourceSubmodule(
   NO_RECURSIVE
 
   SHALLOW_SUBMODULES "src"
+
+  PATCH "src"
 )