diff --git a/doc/libpkgconf-client.rst b/doc/libpkgconf-client.rst
index d75df35..6816fdf 100644
--- a/doc/libpkgconf-client.rst
+++ b/doc/libpkgconf-client.rst
@@ -9,21 +9,32 @@ in parallel.
 Client objects are not thread safe, in other words, a client object should not be shared across
 thread boundaries.
 
-.. c:function:: void pkgconf_client_init(pkgconf_client_t *client, pkgconf_error_handler_func_t error_handler)
+.. c:function:: void pkgconf_client_dir_list_build(pkgconf_client_t *client)
+
+   Bootstraps the package search paths.  If the ``PKGCONF_PKG_PKGF_ENV_ONLY`` `flag` is set on the client,
+   then only the ``PKG_CONFIG_PATH`` environment variable will be used, otherwise both the
+   ``PKG_CONFIG_PATH`` and ``PKG_CONFIG_LIBDIR`` environment variables will be used.
+
+   :param pkgconf_client_t* client: The pkgconf client object to bootstrap.
+   :return: nothing
+
+.. c:function:: void pkgconf_client_init(pkgconf_client_t *client, pkgconf_error_handler_func_t error_handler, void *error_handler_data, const pkgconf_cross_personality_t *personality)
 
    Initialise a pkgconf client object.
 
    :param pkgconf_client_t* client: The client to initialise.
    :param pkgconf_error_handler_func_t error_handler: An optional error handler to use for logging errors.
    :param void* error_handler_data: user data passed to optional error handler
+   :param pkgconf_cross_personality_t* personality: the cross-compile personality to use for defaults
    :return: nothing
 
-.. c:function:: pkgconf_client_t* pkgconf_client_new(pkgconf_error_handler_func_t error_handler)
+.. c:function:: pkgconf_client_t* pkgconf_client_new(pkgconf_error_handler_func_t error_handler, void *error_handler_data, const pkgconf_cross_personality_t *personality)
 
    Allocate and initialise a pkgconf client object.
 
    :param pkgconf_error_handler_func_t error_handler: An optional error handler to use for logging errors.
    :param void* error_handler_data: user data passed to optional error handler
+   :param pkgconf_cross_personality_t* personality: cross-compile personality to use
    :return: A pkgconf client object.
    :rtype: pkgconf_client_t*
 
@@ -97,11 +108,14 @@ thread boundaries.
    :return: true if the warn handler processed the message, else false.
    :rtype: bool
 
-.. c:function:: bool pkgconf_trace(const pkgconf_client_t *client, const char *format, ...)
+.. c:function:: bool pkgconf_trace(const pkgconf_client_t *client, const char *filename, size_t len, const char *funcname, const char *format, ...)
 
    Report a message to a client-registered trace handler.
 
    :param pkgconf_client_t* client: The pkgconf client object to report the trace message to.
+   :param char* filename: The file the function is in.
+   :param size_t lineno: The line number currently being executed.
+   :param char* funcname: The function name to use.
    :param char* format: A printf-style format string to use for formatting the trace message.
    :return: true if the trace handler processed the message, else false.
    :rtype: bool
diff --git a/doc/libpkgconf-dependency.rst b/doc/libpkgconf-dependency.rst
index 1ee3e09..a31405a 100644
--- a/doc/libpkgconf-dependency.rst
+++ b/doc/libpkgconf-dependency.rst
@@ -14,6 +14,7 @@ The `dependency` module provides support for building `dependency lists` (the ba
    :param char* package: The package `atom` to set on the dependency node.
    :param char* version: The package `version` to set on the dependency node.
    :param pkgconf_pkg_comparator_t compare: The comparison operator to set on the dependency node.
+   :param uint flags: Any flags to attach to the dependency node.
    :return: A dependency node.
    :rtype: pkgconf_dependency_t *
 
@@ -25,6 +26,29 @@ The `dependency` module provides support for building `dependency lists` (the ba
    :param pkgconf_dependency_t* tail: The dependency node to add to the tail of the dependency list.
    :return: nothing
 
+.. c:function:: void pkgconf_dependency_free_one(pkgconf_dependency_t *dep)
+
+   Frees a dependency node.
+
+   :param pkgconf_dependency_t* dep: The dependency node to free.
+   :return: nothing
+
+.. c:function:: pkgconf_dependency_t *pkgconf_dependency_ref(pkgconf_client_t *owner, pkgconf_dependency_t *dep)
+
+   Increases a dependency node's refcount.
+
+   :param pkgconf_client_t* owner: The client object which owns the memory of this dependency node.
+   :param pkgconf_dependency_t* dep: The dependency to increase the refcount of.
+   :return: the dependency node on success, else NULL
+
+.. c:function:: void pkgconf_dependency_unref(pkgconf_client_t *owner, pkgconf_dependency_t *dep)
+
+   Decreases a dependency node's refcount and frees it if necessary.
+
+   :param pkgconf_client_t* owner: The client object which owns the memory of this dependency node.
+   :param pkgconf_dependency_t* dep: The dependency to decrease the refcount of.
+   :return: nothing
+
 .. c:function:: void pkgconf_dependency_free(pkgconf_list_t *list)
 
    Release a dependency list and it's child dependency nodes.
@@ -41,6 +65,7 @@ The `dependency` module provides support for building `dependency lists` (the ba
    :param pkgconf_client_t* client: The client object that owns the package this dependency list belongs to.
    :param pkgconf_list_t* deplist_head: The dependency list to populate with dependency nodes.
    :param char* depends: The dependency data to parse.
+   :param uint flags: Any flags to attach to the dependency nodes.
    :return: nothing
 
 .. c:function:: void pkgconf_dependency_parse(const pkgconf_client_t *client, pkgconf_pkg_t *pkg, pkgconf_list_t *deplist, const char *depends)
@@ -53,4 +78,13 @@ The `dependency` module provides support for building `dependency lists` (the ba
    :param pkgconf_pkg_t* pkg: The package object that owns this dependency list.
    :param pkgconf_list_t* deplist: The dependency list to populate with dependency nodes.
    :param char* depends: The dependency data to parse.
+   :param uint flags: Any flags to attach to the dependency nodes.
    :return: nothing
+
+.. c:function:: pkgconf_dependency_t *pkgconf_dependency_copy(pkgconf_client_t *client, const pkgconf_dependency_t *dep)
+
+   Copies a dependency node to a new one.
+
+   :param pkgconf_client_t* client: The client object that will own this dependency.
+   :param pkgconf_dependency_t* dep: The dependency node to copy.
+   :return: a pointer to a new dependency node, else NULL
diff --git a/doc/libpkgconf-fragment.rst b/doc/libpkgconf-fragment.rst
index efbc0c6..00759b7 100644
--- a/doc/libpkgconf-fragment.rst
+++ b/doc/libpkgconf-fragment.rst
@@ -6,13 +6,14 @@ The `fragment` module provides low-level management and rendering of fragment li
 `fragment list` contains various `fragments` of text (such as ``-I /usr/include``) in a matter
 which is composable, mergeable and reorderable.
 
-.. c:function:: void pkgconf_fragment_add(const pkgconf_client_t *client, pkgconf_list_t *list, const char *string)
+.. c:function:: void pkgconf_fragment_add(const pkgconf_client_t *client, pkgconf_list_t *list, const char *string, unsigned int flags)
 
    Adds a `fragment` of text to a `fragment list`, possibly modifying the fragment if a sysroot is set.
 
    :param pkgconf_client_t* client: The pkgconf client being accessed.
    :param pkgconf_list_t* list: The fragment list.
    :param char* string: The string of text to add as a fragment to the fragment list.
+   :param uint flags: Parsing-related flags for the package.
    :return: nothing
 
 .. c:function:: bool pkgconf_fragment_has_system_dir(const pkgconf_client_t *client, const pkgconf_fragment_t *frag)
@@ -110,5 +111,6 @@ which is composable, mergeable and reorderable.
    :param pkgconf_client_t* client: The pkgconf client being accessed.
    :param pkgconf_list_t* list: The `fragment list` to add the fragment entries to.
    :param pkgconf_list_t* vars: A list of variables to use for variable substitution.
+   :param uint flags: Any parsing flags to be aware of.
    :param char* value: The string to parse into fragments.
    :return: true on success, false on parse error
diff --git a/doc/libpkgconf-path.rst b/doc/libpkgconf-path.rst
index e923f61..0478944 100644
--- a/doc/libpkgconf-path.rst
+++ b/doc/libpkgconf-path.rst
@@ -25,12 +25,12 @@ variables.
    :return: number of path nodes added to the path list
    :rtype: size_t
 
-.. c:function:: size_t pkgconf_path_build_from_environ(const char *environ, const char *fallback, pkgconf_list_t *dirlist)
+.. c:function:: size_t pkgconf_path_build_from_environ(const char *envvarname, const char *fallback, pkgconf_list_t *dirlist)
 
    Adds the paths specified in an environment variable to a path list.  If the environment variable is not set,
    an optional default set of paths is added.
 
-   :param char* environ: The environment variable to look up.
+   :param char* envvarname: The environment variable to look up.
    :param char* fallback: The fallback paths to use if the environment variable is not set.
    :param pkgconf_list_t* dirlist: The path list to add the path nodes to.
    :param bool filter: Whether to perform duplicate filtering.
@@ -46,6 +46,14 @@ variables.
    :return: true if the path list has a matching prefix, otherwise false
    :rtype: bool
 
+.. c:function:: void pkgconf_path_copy_list(pkgconf_list_t *dst, const pkgconf_list_t *src)
+
+   Copies a path list to another path list.
+
+   :param pkgconf_list_t* dst: The path list to copy to.
+   :param pkgconf_list_t* src: The path list to copy from.
+   :return: nothing
+
 .. c:function:: void pkgconf_path_free(pkgconf_list_t *dirlist)
 
    Releases any path nodes attached to the given path list.
diff --git a/doc/libpkgconf-personality.rst b/doc/libpkgconf-personality.rst
new file mode 100644
index 0000000..134671a
--- /dev/null
+++ b/doc/libpkgconf-personality.rst
@@ -0,0 +1,27 @@
+
+libpkgconf `personality` module
+=========================
+
+.. c:function:: const pkgconf_cross_personality_t *pkgconf_cross_personality_default(void)
+
+   Returns the default cross-compile personality.
+
+   Not thread safe.
+
+   :rtype: pkgconf_cross_personality_t*
+   :return: the default cross-compile personality
+
+.. c:function:: void pkgconf_cross_personality_deinit(pkgconf_cross_personality_t *)
+
+   Decrements the count of default cross personality instances.
+
+   Not thread safe.
+
+   :rtype: void
+
+.. c:function:: pkgconf_cross_personality_t *pkgconf_cross_personality_find(const char *triplet)
+
+   Attempts to find a cross-compile personality given a triplet.
+
+   :rtype: pkgconf_cross_personality_t*
+   :return: the default cross-compile personality
diff --git a/doc/libpkgconf-pkg.rst b/doc/libpkgconf-pkg.rst
index e3d083e..044bd1f 100644
--- a/doc/libpkgconf-pkg.rst
+++ b/doc/libpkgconf-pkg.rst
@@ -5,22 +5,14 @@ libpkgconf `pkg` module
 The `pkg` module provides dependency resolution services and the overall `.pc` file parsing
 routines.
 
-.. c:function:: void pkgconf_pkg_dir_list_build(pkgconf_client_t *client)
-
-   Bootstraps the package search paths.  If the ``PKGCONF_PKG_PKGF_ENV_ONLY`` `flag` is set on the client,
-   then only the ``PKG_CONFIG_PATH`` environment variable will be used, otherwise both the
-   ``PKG_CONFIG_PATH`` and ``PKG_CONFIG_LIBDIR`` environment variables will be used.
-
-   :param pkgconf_client_t* client: The pkgconf client object to bootstrap.
-   :return: nothing
-
-.. c:function:: pkgconf_pkg_t *pkgconf_pkg_new_from_file(const pkgconf_client_t *client, const char *filename, FILE *f)
+.. c:function:: pkgconf_pkg_t *pkgconf_pkg_new_from_file(const pkgconf_client_t *client, const char *filename, FILE *f, unsigned int flags)
 
    Parse a .pc file into a pkgconf_pkg_t object structure.
 
    :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
    :param char* filename: The filename of the package file (including full path).
    :param FILE* f: The file object to read from.
+   :param uint flags: The flags to use when parsing.
    :returns: A ``pkgconf_pkg_t`` object which contains the package data.
    :rtype: pkgconf_pkg_t *
 
@@ -126,7 +118,7 @@ routines.
    :return: On success, ``PKGCONF_PKG_ERRF_OK`` (0), else an error code.
    :rtype: unsigned int
 
-.. c:function:: unsigned int pkgconf_pkg_traverse(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_pkg_traverse_func_t func, void *data, int maxdepth)
+.. c:function:: unsigned int pkgconf_pkg_traverse(pkgconf_client_t *client, pkgconf_pkg_t *root, pkgconf_pkg_traverse_func_t func, void *data, int maxdepth, unsigned int skip_flags)
 
    Walk and resolve the dependency graph up to `maxdepth` levels.
 
@@ -135,6 +127,7 @@ routines.
    :param pkgconf_pkg_traverse_func_t func: A traversal function to call for each resolved node in the dependency graph.
    :param void* data: An opaque pointer to data to be passed to the traversal function.
    :param int maxdepth: The maximum depth to walk the dependency graph for.  -1 means infinite recursion.
+   :param uint skip_flags: Skip over dependency nodes containing the specified flags.  A setting of 0 skips no dependency nodes.
    :return: ``PKGCONF_PKG_ERRF_OK`` on success, else an error code.
    :rtype: unsigned int
 
diff --git a/doc/libpkgconf-queue.rst b/doc/libpkgconf-queue.rst
index a8e7572..43fca69 100644
--- a/doc/libpkgconf-queue.rst
+++ b/doc/libpkgconf-queue.rst
@@ -33,11 +33,32 @@ Using the `queue` module functions is the recommended way of working with depend
    :param pkgconf_list_t* list: The dependency resolution queue to release.
    :return: nothing
 
+.. c:function:: void pkgconf_solution_free(pkgconf_client_t *client, pkgconf_pkg_t *world, int maxdepth)
+
+   Removes references to package nodes contained in a solution.
+
+   :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
+   :param pkgconf_pkg_t* world: The root for the generated dependency graph.  Should have PKGCONF_PKG_PROPF_VIRTUAL flag.
+   :returns: nothing
+
+.. c:function:: bool pkgconf_queue_solve(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_pkg_t *world, int maxdepth)
+
+   Solves and flattens the dependency graph for the supplied dependency list.
+
+   :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
+   :param pkgconf_list_t* list: The list of dependency requests to consider.
+   :param pkgconf_pkg_t* world: The root for the generated dependency graph, provided by the caller.  Should have PKGCONF_PKG_PROPF_VIRTUAL flag.
+   :param int maxdepth: The maximum allowed depth for the dependency resolver.  A depth of -1 means unlimited.
+   :returns: true if the dependency resolver found a solution, otherwise false.
+   :rtype: bool
+
 .. c:function:: void pkgconf_queue_apply(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_queue_apply_func_t func, int maxdepth, void *data)
 
    Attempt to compile a dependency resolution queue into a dependency resolution problem, then attempt to solve the problem and
    feed the solution to a callback function if a complete dependency graph is found.
 
+   This function should not be used in new code.  Use pkgconf_queue_solve instead.
+
    :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
    :param pkgconf_list_t* list: The list of dependency requests to consider.
    :param pkgconf_queue_apply_func_t func: The callback function to call if a solution is found by the dependency resolver.
diff --git a/doc/libpkgconf-tuple.rst b/doc/libpkgconf-tuple.rst
index b87751d..419168b 100644
--- a/doc/libpkgconf-tuple.rst
+++ b/doc/libpkgconf-tuple.rst
@@ -64,13 +64,14 @@ attached to a given client object.
    :return: the value of the variable or ``NULL``
    :rtype: char *
 
-.. c:function:: char *pkgconf_tuple_parse(const pkgconf_client_t *client, pkgconf_list_t *vars, const char *value)
+.. c:function:: char *pkgconf_tuple_parse(const pkgconf_client_t *client, pkgconf_list_t *vars, const char *value, unsigned int flags)
 
    Parse an expression for variable substitution.
 
    :param pkgconf_client_t* client: The pkgconf client object to access.
    :param pkgconf_list_t* list: The variable list to search for variables (along side the global variable list).
    :param char* value: The ``key=value`` string to parse.
+   :param uint flags: Any flags to consider while parsing.
    :return: the variable data with any variables substituted
    :rtype: char *
 
diff --git a/doc/libpkgconf.rst b/doc/libpkgconf.rst
index e95bb13..37167f0 100644
--- a/doc/libpkgconf.rst
+++ b/doc/libpkgconf.rst
@@ -11,6 +11,7 @@ libpkgconf - an API for managing `pkg-config` modules
    libpkgconf-dependency
    libpkgconf-fragment
    libpkgconf-path
+   libpkgconf-personality
    libpkgconf-pkg
    libpkgconf-queue
    libpkgconf-tuple