diff --git a/sim/sh/.Sanitize b/sim/sh/.Sanitize
index 7ab53a0dc5e..4b62874c66e 100644
--- a/sim/sh/.Sanitize
+++ b/sim/sh/.Sanitize
@@ -27,6 +27,7 @@ Things-to-keep:
 
 ChangeLog
 Makefile.in
+config.in
 configure
 configure.in
 interp.c
diff --git a/sim/sh/configure.in b/sim/sh/configure.in
index 09ae59d3c9c..b31f21c0bf1 100644
--- a/sim/sh/configure.in
+++ b/sim/sh/configure.in
@@ -2,27 +2,8 @@ dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.5)dnl
 AC_INIT(Makefile.in)
 
-AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/../..)
-AC_CANONICAL_SYSTEM
-AC_ARG_PROGRAM
-AC_PROG_CC
-AC_PROG_INSTALL
+SIM_AC_COMMON
 
-. ${srcdir}/../../bfd/configure.host
+AC_CHECK_HEADERS(unistd.h)
 
-AC_SUBST(CFLAGS)
-AC_SUBST(HDEFINES)
-AR=${AR-ar}
-AC_SUBST(AR)
-AC_PROG_RANLIB
-
-# Put a plausible default for CC_FOR_BUILD in Makefile.
-AC_C_CROSS
-if test "x$cross_compiling" = "xno"; then
-  CC_FOR_BUILD='$(CC)'
-else
-  CC_FOR_BUILD=gcc
-fi
-AC_SUBST(CC_FOR_BUILD)
-
-AC_OUTPUT(Makefile)
+SIM_AC_OUTPUT