--- alpine/Makefile.am.orig
+++ alpine/Makefile.am
@@ -35,7 +35,7 @@ BUILT_SOURCES = date.c
 LDADD = ../pico/libpico.a ../pico/osdep/libpicoosd.a \
 	../pith/libpith.a ../pith/osdep/libpithosd.a  \
 	../pith/charconv/libpithcc.a \
-	osdep/libpineosd.a ../c-client/c-client.a
+	osdep/libpineosd.a ../c-client/c-client.a -lkrb5 -lcrypto
 
 AM_CPPFLAGS = -I$(top_builddir)/include -I$(top_srcdir)/include -DLOCALEDIR=\"$(localedir)\"
 
--- configure.ac.orig
+++ configure.ac
@@ -37,8 +37,9 @@ WEB_BUILD=web/src/alpined.d
 
 dnl CHECK PROGRAMS
 
-AC_PROG_CC
 AC_PROG_CC_STDC
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
 AC_PROG_INSTALL
 AC_PROG_MAKE_SET
 AC_PROG_LN_S