--- wml_backend/p4_gm4/configure.in
+++ wml_backend/p4_gm4/configure.in
@@ -2,7 +2,7 @@
 # Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
 # Process this file with autoconf to produce a configure script.
 
-undefine([changeword])
+m4_ifdef([changeword],[m4_undef([changeword])])
 
 AC_INIT(src/m4.c)
 AC_CONFIG_HEADER(config.h)
@@ -21,9 +21,7 @@
 AC_PROG_MAKE_SET
 AC_PROG_RANLIB
 
-AC_AIX
-AC_ISC_POSIX
-AC_MINIX
+AC_USE_SYSTEM_EXTENSIONS
 fp_C_PROTOTYPES
 AC_C_CONST
 AC_EXEEXT
--- wml_backend/p2_mp4h/src/Makefile.am
+++ wml_backend/p2_mp4h/src/Makefile.am
@@ -8,7 +8,7 @@
 EXTRA_DIST = readme.tmpl
 
 if LOADABLE_MODULES
-MODULE_C = module.c ltdl.c
+MODULE_C = module.c
 endif
 
 mp4h_SOURCES = builtin.c debug.c devel.c freeze.c input.c \
@@ -16,7 +16,7 @@
 if LOADABLE_MODULES
 mp4h_LDFLAGS = -export-dynamic
 endif
-mp4h_LDADD   = -lm $(top_builddir)/lib/libmp4h.a -lpcre @INTLLIBS@
+mp4h_LDADD   = -lm $(top_builddir)/lib/libmp4h.a -lpcre @INTLLIBS@ -lltdl
 
 include_HEADERS = mp4h.h
 noinst_HEADERS  = builtin.h ltdl.h
--- wml_backend/p2_mp4h/modules/intl/Makefile.am
+++ wml_backend/p2_mp4h/modules/intl/Makefile.am
@@ -13,7 +13,7 @@
 man3ext   = 3
 
 INCLUDES  = -I$(top_srcdir)/lib  -I$(top_srcdir)/src @INTLINCL@
-LDFLAGS   = -no-undefined -module -avoid-version -rpath $(mp4mdir) @DLLDFLAGS@
+AM_LDFLAGS   = -no-undefined -module -avoid-version -rpath $(mp4mdir) @DLLDFLAGS@
 
 if DO_MODULE_INTL_GETTEXT
 mp4m_LTLIBRARIES   = gettext.la
--- wml_backend/p2_mp4h/modules/system/Makefile.am
+++ wml_backend/p2_mp4h/modules/system/Makefile.am
@@ -13,7 +13,7 @@
 man3ext   = 3
 
 INCLUDES  = -I$(top_srcdir)/lib  -I$(top_srcdir)/src @INTLINCL@
-LDFLAGS   = -no-undefined -module -avoid-version -rpath $(mp4mdir) @DLLDFLAGS@
+AM_LDFLAGS   = -no-undefined -module -avoid-version -rpath $(mp4mdir) @DLLDFLAGS@
 
 if DO_MODULE_SYSTEM
 mp4m_LTLIBRARIES = sh.la exec.la
--- wml_backend/p3_eperl/Makefile.in
+++ wml_backend/p3_eperl/Makefile.in
@@ -215,7 +215,6 @@
 
 eperl$(EXEEXT): $(OBJS)
 	$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LDLIBS) $(dmalloc)
-	@[ "x$(debug)" = xon ] || strip $@
 
 eperl_main.o: eperl_main.c
 	$(CC) $(CFLAGS) -c eperl_main.c