PipeWire exports a function named "pw_init". FreeBSD also has the libutil.so
library, which exports a function with the same name. To workaround the
conflict, rename the PipeWire init function into "pipewire_init".

Upstream issue: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/1819

--- src/pipewire/pipewire.c.orig	2022-04-27 17:59:21 UTC
+++ src/pipewire/pipewire.c
@@ -580,7 +580,7 @@ SPA_EXPORT
  * This function can be called multiple times.
  */
 SPA_EXPORT
-void pw_init(int *argc, char **argv[])
+void pipewire_init(int *argc, char **argv[])
 {
 	const char *str;
 	struct spa_dict_item items[6];
@@ -683,7 +683,7 @@ SPA_EXPORT
  * used again after being deinitialized with a new pw_init() call.
  */
 SPA_EXPORT
-void pw_deinit(void)
+void pipewire_deinit(void)
 {
 	struct support *support = &global_support;
 	struct registry *registry = &support->registry;
@@ -712,6 +712,21 @@ done:
 	pthread_mutex_unlock(&init_lock);
 
 }
+
+#if !defined(__FreeBSD__)
+#undef pw_init
+SPA_EXPORT
+void pw_init(int *argc, char **argv[])
+{
+	pipewire_init(argc, argv);
+}
+#undef pw_deinit
+SPA_EXPORT
+void pw_deinit(void)
+{
+	pipewire_deinit();
+}
+#endif
 
 /** Check if a debug category is enabled
  *
--- src/pipewire/pipewire.h.orig	2022-04-27 17:59:21 UTC
+++ src/pipewire/pipewire.h
@@ -69,9 +69,12 @@ void
  * \{
  */
 void
-pw_init(int *argc, char **argv[]);
+pipewire_init(int *argc, char **argv[]);
+void pipewire_deinit(void);
 
-void pw_deinit(void);
+/* BSD has pw_init already */
+#define pw_init pipewire_init
+#define pw_deinit pipewire_deinit
 
 bool
 pw_debug_is_category_enabled(const char *name);