diff -up BiocParallel/BiocParallel/configure.ac.lrt BiocParallel/BiocParallel/configure.ac
--- BiocParallel/BiocParallel/configure.ac.lrt	2019-02-07 11:23:03.212701085 -0500
+++ BiocParallel/BiocParallel/configure.ac	2019-02-07 11:23:03.212701085 -0500
@@ -0,0 +1,8 @@
+AC_INIT([BiocParallel], 1.16.5) dnl package name, version
+
+dnl check librt for shm_open support
+dnl R usually is linked to librt but not always
+AC_CHECK_LIB(rt, shm_open)
+AC_SUBST(LIBS)
+AC_CONFIG_FILES([src/Makevars])
+AC_OUTPUT
diff -up BiocParallel/BiocParallel/src/Makevars.in.lrt BiocParallel/BiocParallel/src/Makevars.in
--- BiocParallel/BiocParallel/src/Makevars.in.lrt	2019-02-07 11:23:29.036215789 -0500
+++ BiocParallel/BiocParallel/src/Makevars.in	2019-02-07 11:23:39.532018543 -0500
@@ -0,0 +1 @@
+PKG_LIBS = @LIBS@