diff -x CVS -ruN pkgsrc-2019Q1/audio/openal-soft//distinfo pkgsrc/audio/openal-soft//distinfo
--- pkgsrc-2019Q1/audio/openal-soft//distinfo	2019-03-25 15:20:37.000000000 +0100
+++ pkgsrc/audio/openal-soft//distinfo	2019-06-14 10:31:07.408198219 +0200
@@ -5,3 +5,4 @@
 SHA512 (openal-soft-1.19.1.tar.bz2) = 356a3f12bbe284bfac71f4f2a9f83d084083a832012222e73743042ac27812cf051c12b0ddcf53c010ff77e44ae2e9033cea9b9324d316a22a59a154307a64a4
 Size (openal-soft-1.19.1.tar.bz2) = 577310 bytes
 SHA1 (patch-Alc_alconfig.c) = 7628484191f11050b8037757fa3e3ed51cebfc90
+SHA1 (patch-CMakeLists.txt) = c6dc101c3644633ff9b9cbdd276a4ddd16210ce5
diff -x CVS -ruN pkgsrc-2019Q1/audio/openal-soft//patches/patch-CMakeLists.txt pkgsrc/audio/openal-soft//patches/patch-CMakeLists.txt
--- pkgsrc-2019Q1/audio/openal-soft//patches/patch-CMakeLists.txt	1970-01-01 01:00:00.000000000 +0100
+++ pkgsrc/audio/openal-soft//patches/patch-CMakeLists.txt	2019-06-14 10:31:02.652348847 +0200
@@ -0,0 +1,14 @@
+$NetBSD$
+
+--- CMakeLists.txt.orig	2018-10-11 22:05:31.000000000 +0000
++++ CMakeLists.txt
+@@ -649,7 +649,8 @@ IF(NOT HAVE_WINDOWS_H)
+     IF(HAVE_PTHREAD)
+         SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -pthread")
+         SET(C_FLAGS ${C_FLAGS} -pthread)
+-        SET(LINKER_FLAGS ${LINKER_FLAGS} -pthread)
++	# -lrt needed in addition on SLES 11 with gcc 8
++        SET(LINKER_FLAGS ${LINKER_FLAGS} -pthread -lrt)
+     ENDIF()
+ 
+     CHECK_LIBRARY_EXISTS(pthread pthread_create "" HAVE_LIBPTHREAD)