Don't link against portaudio, we used dlopen() and friends for that.

src/xpdev/CMakeLists.txt

@@ -137,18 +137,14 @@ if(PORTAUDIO2_FOUND)
 	set(PORTAUDIO_LIBS PORTAUDIO2_LIBS)
 	set(PORTAUDIO_CFLAGS PORTAUDIO2_CFLAGS)
 else()
-	find_library(PORTAUDIO_LIBS portaudio)
-	if(NOT PORTAUDIO_LIBS STREQUAL PORTAUDIO_LIBS-NOTFOUND)
-		find_path(PORTAUDIO_INCLUDEDIR portaudio.h)
-		if(NOT PORTAUDIO_INCLUDEDIR STREQUAL PORTAUDIO_INCLUDEIDR-NOTFOUND)
-			set(PORTAUDIO_FOUND TRUE)
-		endif()
+	find_path(PORTAUDIO_INCLUDEDIR portaudio.h)
+	if(NOT PORTAUDIO_INCLUDEDIR STREQUAL PORTAUDIO_INCLUDEIDR-NOTFOUND)
+		set(PORTAUDIO_FOUND TRUE)
 	endif()
 endif()
 
 if(PORTAUDIO_FOUND)
 	target_include_directories(xpdev PRIVATE ${PORTAUDIO_INCLUDEDIR})
-	target_link_libraries(xpdev ${PORTAUDIO_LIBS})
 endif()
 
 CHECK_INCLUDE_FILES(alsa/asoundlib.h USE_ALSA_SOUND)