--- lrzsz-0.12.20/configure.in
+++ lrzsz-0.12.20/configure.in
@@ -97,7 +97,6 @@
 AC_ISC_POSIX
 AC_USE_SYSTEM_EXTENSIONS
 AM_GNU_GETTEXT
-AM_C_PROTOTYPES
 AC_C_CONST
 AC_C_INLINE
 
--- lrzsz-0.12.20/lib/Makefile.am
+++ lrzsz-0.12.20/lib/Makefile.am
@@ -1,5 +1,4 @@
 noinst_LIBRARIES=libzmodem.a
-AUTOMAKE_OPTIONS=ansi2knr
 
 EXTRA_DIST = alloca.c ansi2knr.1 ansi2knr.c \
 	getopt.c getopt1.c mkdir.c mktime.c \
--- lrzsz-0.12.20/src/Makefile.am
+++ lrzsz-0.12.20/src/Makefile.am
@@ -7,7 +7,6 @@
 DISTCLEAN_FILES=lrzszbug
 
 LDADD = ../lib/libzmodem.a @INTLLIBS@
-AUTOMAKE_OPTIONS=ansi2knr
 EXTRA_DIST = ansi2knr.1 ansi2knr.c lrzszbug.in
 INCLUDES = -I.. -I$(srcdir) -I$(top_srcdir)/src -I../intl -I$(top_srcdir)/lib
 #DEFS = -DLOCALEDIR=\"$(localedir)\" -DOS=\"@host_os@\" -DCPU=\"@host_cpu@\"