--- ../procps-3.3.17/Makefile.am	2021-02-09 10:11:25.000000000 +0000
+++ ./Makefile.am	2021-05-08 19:17:42.013134502 +0000
@@ -160,7 +160,8 @@
 	top/top.c \
 	top/top_nls.h \
 	top/top_nls.c \
-	lib/fileutils.c
+	lib/fileutils.c \
+	lib/strverscmp.c
 
 if CYGWIN
 top_top_SOURCES += lib/strverscmp.c