commit 43cc36abff0fbaa5b5b434ca17b4b74f45dad98a
Author: Nathan Scott <nathans@redhat.com>
Date:   Thu Jan 9 16:01:18 2020 +1100

    build: ensure generated demo Makefile matches on 32/64 Linux
    
    This corrects a multilib issue with the pcp-devel RPMs.
    Resolves Red Hat bugzilla #1788119

diff --git a/src/pmdas/trace/GNUmakefile b/src/pmdas/trace/GNUmakefile
index b7087d017..b5e0589ad 100644
--- a/src/pmdas/trace/GNUmakefile
+++ b/src/pmdas/trace/GNUmakefile
@@ -101,7 +101,7 @@ MY_INC_DIR	= -I$(PCP_INC_DIR)/..
 else
 MY_INC_DIR	=
 endif
-ifneq "$(PCP_LIB_DIR)" "/usr/lib"
+ifeq "$(findstring $(PCP_LIB_DIR), /usr/lib /usr/lib64)" ""
 # for ld add -L<run-time-lib-dir> and include -rpath when
 # $(PCP_LIB_DIR) may not be on the default ld search path.
 #