--- openal-soft-1.21.0/CMakeLists.txt.orig	2017-08-15 10:18:37.065522000 +0200
+++ openal-soft-1.21.0/CMakeLists.txt	2017-08-15 10:18:58.438744500 +0200
@@ -1257,7 +1257,10 @@
     add_library(${IMPL_TARGET} SHARED ${OPENAL_OBJS} ${ALC_OBJS} ${RC_CONFIG}
         ${TARGET_PUBLIC_HEADERS})
     if(WIN32)
-        set_target_properties(${IMPL_TARGET} PROPERTIES PREFIX "")
+        set_target_properties(${IMPL_TARGET} PROPERTIES
+                              OUTPUT_NAME openal
+                              RUNTIME_OUTPUT_NAME openal-${LIB_MAJOR_VERSION}
+                              ARCHIVE_OUTPUT_NAME openal)
     endif()
     target_link_libraries(${IMPL_TARGET} PRIVATE common ${LINKER_FLAGS} ${EXTRA_LIBS} ${MATH_LIB})
 
