vcpkg/ports/alsa/fix-plugin-dir.patch

diff --git a/src/dlmisc.c b/src/dlmisc.c
index f64c716..a413233 100644
--- a/src/dlmisc.c
+++ b/src/dlmisc.c
@@ -34,6 +34,9 @@
 #endif
 #include <limits.h>
 
+#include <sys/types.h>
+#include <dirent.h>
+
 #if defined(HAVE_LIBDL) && defined(__GLIBC__) && !defined(__UCLIBC__)
 #define DL_ORIGIN_AVAILABLE 1
 #endif
@@ -79,6 +82,16 @@ static void snd_dlinfo_origin(char *path, size_t path_len)
 #endif
 }
 
+static unsigned int checkExist(const char* dirName) {
+    DIR* dir = opendir(dirName);
+    if(dir) {
+        closedir(dir);
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
 /**
  *
  * \brief Compose the dynamic path
@@ -94,8 +107,14 @@ int snd_dlpath(char *path, size_t path_len, const char *name)
 		const char *env = getenv("ALSA_PLUGIN_DIR");
 		if (env) {
 			snd_plugin_dir = strdup(env);
+		} else if(checkExist(ALSA_PLUGIN_DIR) ) {
+			snd_plugin_dir = strdup(ALSA_PLUGIN_DIR);
+		} else if(sizeof(void*) == 8 && checkExist("/usr/lib64/alsa-lib") ) {
+			snd_plugin_dir = strdup("/usr/lib64/alsa-lib");
+		} else if(sizeof(void*) == 4 && checkExist("/usr/lib32/alsa-lib") ) {
+			snd_plugin_dir = strdup("/usr/lib32/alsa-lib");
 		} else {
-			snd_dlinfo_origin(path, path_len);
+			snd_plugin_dir = strdup("/usr/lib/alsa-lib");
 		}
 		snd_plugin_dir_set = 1;
 	}