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[binutils-gdb] sim: arm: use common configure options

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c4c9c44f57763ef4acacb440cdf601f5ce087edb

commit c4c9c44f57763ef4acacb440cdf601f5ce087edb
Author: Mike Frysinger <vapier@gentoo.org>
Date:   Mon Mar 30 02:27:22 2015 -0400

    sim: arm: use common configure options
    
    In preparation for converting to nrun, call the common functions that
    are needed.  This doesn't produce any new warnings, and the generated
    code should be the same.

Diff:
---
 sim/arm/ChangeLog    |   7 +
 sim/arm/config.in    |  15 ++
 sim/arm/configure    | 528 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 sim/arm/configure.ac |   7 +
 4 files changed, 555 insertions(+), 2 deletions(-)

diff --git a/sim/arm/ChangeLog b/sim/arm/ChangeLog
index 9441a61..6ceed8b 100644
--- a/sim/arm/ChangeLog
+++ b/sim/arm/ChangeLog
@@ -1,5 +1,12 @@
 2015-03-30  Mike Frysinger  <vapier@gentoo.org>
 
+	* configure.ac: Call SIM_AC_OPTION_ENDIAN, SIM_AC_OPTION_ALIGNMENT,
+	SIM_AC_OPTION_HOSTENDIAN, SIM_AC_OPTION_ENVIRONMENT,
+	SIM_AC_OPTION_INLINE, and SIM_AC_OPTION_WARNINGS.
+	* config.in, configure: Regenerate.
+
+2015-03-30  Mike Frysinger  <vapier@gentoo.org>
+
 	* Makefile.in (COPRO): Delete.
 	(SIM_OBJS): Expand COPRO.
 	* configure.ac: Deletd stdint.h check.
diff --git a/sim/arm/config.in b/sim/arm/config.in
index 5ded703..6003e58 100644
--- a/sim/arm/config.in
+++ b/sim/arm/config.in
@@ -1,5 +1,8 @@
 /* config.in.  Generated from configure.ac by autoheader.  */
 
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
 /* Define to 1 if translation of program messages to the user's native
    language is requested. */
 #undef ENABLE_NLS
@@ -135,6 +138,18 @@
 #endif
 
 
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
 /* Define to 1 if on MINIX. */
 #undef _MINIX
 
diff --git a/sim/arm/configure b/sim/arm/configure
index fa26277..af6e579 100755
--- a/sim/arm/configure
+++ b/sim/arm/configure
@@ -759,6 +759,14 @@ enable_sim_trace
 enable_sim_profile
 with_pkgversion
 with_bugurl
+enable_sim_endian
+enable_sim_alignment
+enable_sim_hostendian
+enable_sim_environment
+enable_sim_inline
+enable_werror
+enable_build_warnings
+enable_sim_build_warnings
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1401,6 +1409,16 @@ Optional Features:
   --enable-sim-stdio			Specify whether to use stdio for console input/output.
   --enable-sim-trace=opts		Enable tracing flags
   --enable-sim-profile=opts		Enable profiling flags
+  --enable-sim-endian=endian		Specify target byte endian orientation.
+  --enable-sim-alignment=align		Specify strict,  nonstrict or forced alignment of memory accesses.
+  --enable-sim-hostendian=end		Specify host byte endian orientation.
+  --enable-sim-environment=environment	Specify mixed, user, virtual or operating environment.
+  --enable-sim-inline=inlines		Specify which functions should be inlined.
+  --enable-werror         treat compile warnings as errors
+  --enable-build-warnings enable build-time compiler warnings if gcc is used
+  --enable-sim-build-warnings
+                          enable SIM specific build-time compiler warnings if
+                          gcc is used
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -12354,7 +12372,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12357 "configure"
+#line 12375 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12460,7 +12478,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12463 "configure"
+#line 12481 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12951,6 +12969,511 @@ sim_link_links="${sim_link_links} targ-vals.def"
 
 
 
+wire_endian=""
+default_endian=""
+# Check whether --enable-sim-endian was given.
+if test "${enable_sim_endian+set}" = set; then :
+  enableval=$enable_sim_endian; case "${enableval}" in
+  b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BIG_ENDIAN";;
+  l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=LITTLE_ENDIAN";;
+  yes)	 if test x"$wire_endian" != x; then
+	   sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
+	 else
+           if test x"$default_endian" != x; then
+	     sim_endian="-DWITH_TARGET_BYTE_ORDER=${default_endian}"
+	   else
+	     echo "No hard-wired endian for target $target" 1>&6
+	     sim_endian="-DWITH_TARGET_BYTE_ORDER=0"
+	   fi
+	 fi;;
+  no)	 if test x"$default_endian" != x; then
+	   sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
+	 else
+	   if test x"$wire_endian" != x; then
+	     sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${wire_endian}"
+	   else
+	     echo "No default endian for target $target" 1>&6
+	     sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=0"
+	   fi
+	 fi;;
+  *)	 as_fn_error "\"Unknown value $enableval for --enable-sim-endian\"" "$LINENO" 5; sim_endian="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
+  echo "Setting endian flags = $sim_endian" 6>&1
+fi
+else
+  if test x"$default_endian" != x; then
+  sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
+else
+  if test x"$wire_endian" != x; then
+    sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
+  else
+    sim_endian=
+  fi
+fi
+fi
+
+wire_alignment="STRICT_ALIGNMENT"
+default_alignment="STRICT_ALIGNMENT"
+
+# Check whether --enable-sim-alignment was given.
+if test "${enable_sim_alignment+set}" = set; then :
+  enableval=$enable_sim_alignment; case "${enableval}" in
+  strict | STRICT)       sim_alignment="-DWITH_ALIGNMENT=STRICT_ALIGNMENT";;
+  nonstrict | NONSTRICT) sim_alignment="-DWITH_ALIGNMENT=NONSTRICT_ALIGNMENT";;
+  forced | FORCED)       sim_alignment="-DWITH_ALIGNMENT=FORCED_ALIGNMENT";;
+  yes) if test x"$wire_alignment" != x; then
+	 sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
+       else
+         if test x"$default_alignment" != x; then
+           sim_alignment="-DWITH_ALIGNMENT=${default_alignment}"
+         else
+	   echo "No hard-wired alignment for target $target" 1>&6
+	   sim_alignment="-DWITH_ALIGNMENT=0"
+         fi
+       fi;;
+  no)  if test x"$default_alignment" != x; then
+	 sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
+       else
+         if test x"$wire_alignment" != x; then
+	   sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${wire_alignment}"
+         else
+           echo "No default alignment for target $target" 1>&6
+           sim_alignment="-DWITH_DEFAULT_ALIGNMENT=0"
+         fi
+       fi;;
+  *)   as_fn_error "\"Unknown value $enableval passed to --enable-sim-alignment\"" "$LINENO" 5; sim_alignment="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_alignment" != x""; then
+  echo "Setting alignment flags = $sim_alignment" 6>&1
+fi
+else
+  if test x"$default_alignment" != x; then
+  sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
+else
+  if test x"$wire_alignment" != x; then
+    sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
+  else
+    sim_alignment=
+  fi
+fi
+fi
+
+
+# Check whether --enable-sim-hostendian was given.
+if test "${enable_sim_hostendian+set}" = set; then :
+  enableval=$enable_sim_hostendian; case "${enableval}" in
+  no)	 sim_hostendian="-DWITH_HOST_BYTE_ORDER=0";;
+  b*|B*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN";;
+  l*|L*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN";;
+  *)	 as_fn_error "\"Unknown value $enableval for --enable-sim-hostendian\"" "$LINENO" 5; sim_hostendian="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_hostendian" != x""; then
+  echo "Setting hostendian flags = $sim_hostendian" 6>&1
+fi
+else
+
+if test "x$cross_compiling" = "xno"; then
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether byte ordering is bigendian" >&5
+$as_echo_n "checking whether byte ordering is bigendian... " >&6; }
+if test "${ac_cv_c_bigendian+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_c_bigendian=unknown
+    # See if we're dealing with a universal compiler.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifndef __APPLE_CC__
+	       not a universal capable compiler
+	     #endif
+	     typedef int dummy;
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+	# Check for potential -arch flags.  It is not universal unless
+	# there are at least two -arch flags with different values.
+	ac_arch=
+	ac_prev=
+	for ac_word in $CC $CFLAGS $CPPFLAGS $LDFLAGS; do
+	 if test -n "$ac_prev"; then
+	   case $ac_word in
+	     i?86 | x86_64 | ppc | ppc64)
+	       if test -z "$ac_arch" || test "$ac_arch" = "$ac_word"; then
+		 ac_arch=$ac_word
+	       else
+		 ac_cv_c_bigendian=universal
+		 break
+	       fi
+	       ;;
+	   esac
+	   ac_prev=
+	 elif test "x$ac_word" = "x-arch"; then
+	   ac_prev=arch
+	 fi
+       done
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if sys/param.h defines the BYTE_ORDER macro.
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+	     #include <sys/param.h>
+
+int
+main ()
+{
+#if ! (defined BYTE_ORDER && defined BIG_ENDIAN \
+		     && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN \
+		     && LITTLE_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  # It does; now see whether it defined to BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+		#include <sys/param.h>
+
+int
+main ()
+{
+#if BYTE_ORDER != BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_c_bigendian=yes
+else
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # See if <limits.h> defines _LITTLE_ENDIAN or _BIG_ENDIAN (e.g., Solaris).
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main ()
+{
+#if ! (defined _LITTLE_ENDIAN || defined _BIG_ENDIAN)
+	      bogus endian macros
+	     #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  # It does; now see whether it defined to _BIG_ENDIAN or not.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <limits.h>
+
+int
+main ()
+{
+#ifndef _BIG_ENDIAN
+		 not big endian
+		#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_c_bigendian=yes
+else
+  ac_cv_c_bigendian=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    fi
+    if test $ac_cv_c_bigendian = unknown; then
+      # Compile a test program.
+      if test "$cross_compiling" = yes; then :
+  # Try to guess by grepping values from an object file.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+short int ascii_mm[] =
+		  { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
+		short int ascii_ii[] =
+		  { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
+		int use_ascii (int i) {
+		  return ascii_mm[i] + ascii_ii[i];
+		}
+		short int ebcdic_ii[] =
+		  { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
+		short int ebcdic_mm[] =
+		  { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
+		int use_ebcdic (int i) {
+		  return ebcdic_mm[i] + ebcdic_ii[i];
+		}
+		extern int foo;
+
+int
+main ()
+{
+return use_ascii (foo) == use_ebcdic (foo);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then
+	      ac_cv_c_bigendian=yes
+	    fi
+	    if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then
+	      if test "$ac_cv_c_bigendian" = unknown; then
+		ac_cv_c_bigendian=no
+	      else
+		# finding both strings is unlikely to happen, but who knows?
+		ac_cv_c_bigendian=unknown
+	      fi
+	    fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$ac_includes_default
+int
+main ()
+{
+
+	     /* Are we little or big endian?  From Harbison&Steele.  */
+	     union
+	     {
+	       long int l;
+	       char c[sizeof (long int)];
+	     } u;
+	     u.l = 1;
+	     return u.c[sizeof (long int) - 1] == 1;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ac_cv_c_bigendian=no
+else
+  ac_cv_c_bigendian=yes
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+    fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_bigendian" >&5
+$as_echo "$ac_cv_c_bigendian" >&6; }
+ case $ac_cv_c_bigendian in #(
+   yes)
+     $as_echo "#define WORDS_BIGENDIAN 1" >>confdefs.h
+;; #(
+   no)
+      ;; #(
+   universal)
+
+$as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
+
+     ;; #(
+   *)
+     as_fn_error "unknown endianness
+ presetting ac_cv_c_bigendian=no (or yes) will help" "$LINENO" 5 ;;
+ esac
+
+  if test $ac_cv_c_bigendian = yes; then
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN"
+  else
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN"
+  fi
+else
+  sim_hostendian="-DWITH_HOST_BYTE_ORDER=0"
+fi
+fi
+
+
+# Check whether --enable-sim-environment was given.
+if test "${enable_sim_environment+set}" = set; then :
+  enableval=$enable_sim_environment; case "${enableval}" in
+  all | ALL)             sim_environment="-DWITH_ENVIRONMENT=ALL_ENVIRONMENT";;
+  user | USER)           sim_environment="-DWITH_ENVIRONMENT=USER_ENVIRONMENT";;
+  virtual | VIRTUAL)     sim_environment="-DWITH_ENVIRONMENT=VIRTUAL_ENVIRONMENT";;
+  operating | OPERATING) sim_environment="-DWITH_ENVIRONMENT=OPERATING_ENVIRONMENT";;
+  *)   as_fn_error "\"Unknown value $enableval passed to --enable-sim-environment\"" "$LINENO" 5;
+       sim_environment="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_environment" != x""; then
+  echo "Setting sim environment = $sim_environment" 6>&1
+fi
+else
+  sim_environment="-DWITH_ENVIRONMENT=ALL_ENVIRONMENT"
+fi
+
+
+default_sim_inline=""
+# Check whether --enable-sim-inline was given.
+if test "${enable_sim_inline+set}" = set; then :
+  enableval=$enable_sim_inline; sim_inline=""
+case "$enableval" in
+  no)		sim_inline="-DDEFAULT_INLINE=0";;
+  0)		sim_inline="-DDEFAULT_INLINE=0";;
+  yes | 2)	sim_inline="-DDEFAULT_INLINE=ALL_C_INLINE";;
+  1)		sim_inline="-DDEFAULT_INLINE=INLINE_LOCALS";;
+  *) for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
+       new_flag=""
+       case "$x" in
+	 *_INLINE=*)	new_flag="-D$x";;
+	 *=*)		new_flag=`echo "$x" | sed -e "s/=/_INLINE=/" -e "s/^/-D/"`;;
+	 *_INLINE)	new_flag="-D$x=ALL_C_INLINE";;
+	 *)		new_flag="-D$x""_INLINE=ALL_C_INLINE";;
+       esac
+       if test x"$sim_inline" = x""; then
+	 sim_inline="$new_flag"
+       else
+	 sim_inline="$sim_inline $new_flag"
+       fi
+     done;;
+esac
+if test x"$silent" != x"yes" && test x"$sim_inline" != x""; then
+  echo "Setting inline flags = $sim_inline" 6>&1
+fi
+else
+
+if test "x$cross_compiling" = "xno"; then
+  if test x"$GCC" != "x" -a x"${default_sim_inline}" != "x" ; then
+    sim_inline="${default_sim_inline}"
+    if test x"$silent" != x"yes"; then
+      echo "Setting inline flags = $sim_inline" 6>&1
+    fi
+  else
+    sim_inline=""
+  fi
+else
+  sim_inline="-DDEFAULT_INLINE=0"
+fi
+fi
+
+
+# Check whether --enable-werror was given.
+if test "${enable_werror+set}" = set; then :
+  enableval=$enable_werror; case "${enableval}" in
+     yes | y) ERROR_ON_WARNING="yes" ;;
+     no | n)  ERROR_ON_WARNING="no" ;;
+     *) as_fn_error "bad value ${enableval} for --enable-werror" "$LINENO" 5 ;;
+   esac
+fi
+
+
+# Enable -Werror by default when using gcc
+if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
+    ERROR_ON_WARNING=yes
+fi
+
+WERROR_CFLAGS=""
+if test "${ERROR_ON_WARNING}" = yes ; then
+# NOTE: Disabled in the sim dir due to most sims generating warnings.
+#    WERROR_CFLAGS="-Werror"
+     true
+fi
+
+build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+-Wpointer-sign \
+-Wno-unused -Wunused-value -Wunused-function \
+-Wno-switch -Wno-char-subscripts -Wmissing-prototypes
+-Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type \
+-Wold-style-declaration -Wold-style-definition"
+
+# Enable -Wno-format by default when using gcc on mingw since many
+# GCC versions complain about %I64.
+case "${host}" in
+  *-*-mingw32*) build_warnings="$build_warnings -Wno-format" ;;
+  *) build_warnings="$build_warnings -Wformat-nonliteral" ;;
+esac
+
+# Check whether --enable-build-warnings was given.
+if test "${enable_build_warnings+set}" = set; then :
+  enableval=$enable_build_warnings; case "${enableval}" in
+  yes)	;;
+  no)	build_warnings="-w";;
+  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${build_warnings} ${t}";;
+  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${t} ${build_warnings}";;
+  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac
+if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
+  echo "Setting compiler warning flags = $build_warnings" 6>&1
+fi
+fi
+# Check whether --enable-sim-build-warnings was given.
+if test "${enable_sim_build_warnings+set}" = set; then :
+  enableval=$enable_sim_build_warnings; case "${enableval}" in
+  yes)	;;
+  no)	build_warnings="-w";;
+  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${build_warnings} ${t}";;
+  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${t} ${build_warnings}";;
+  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac
+if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
+  echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
+fi
+fi
+WARN_CFLAGS=""
+if test "x${build_warnings}" != x -a "x$GCC" = xyes
+then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking compiler warning flags" >&5
+$as_echo_n "checking compiler warning flags... " >&6; }
+    # Separate out the -Werror flag as some files just cannot be
+    # compiled with it enabled.
+    for w in ${build_warnings}; do
+	case $w in
+	-Werr*) WERROR_CFLAGS=-Werror ;;
+	*) # Check that GCC accepts it
+	    saved_CFLAGS="$CFLAGS"
+	    CFLAGS="$CFLAGS $w"
+	    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  WARN_CFLAGS="${WARN_CFLAGS} $w"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	    CFLAGS="$saved_CFLAGS"
+	esac
+    done
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${WARN_CFLAGS} ${WERROR_CFLAGS}" >&5
+$as_echo "${WARN_CFLAGS} ${WERROR_CFLAGS}" >&6; }
+fi
+
+
+
 ac_sources="$sim_link_files"
 ac_dests="$sim_link_links"
 while test -n "$ac_sources"; do
@@ -13085,6 +13608,7 @@ if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
 
+
 : ${CONFIG_STATUS=./config.status}
 ac_write_fail=0
 ac_clean_files_save=$ac_clean_files
diff --git a/sim/arm/configure.ac b/sim/arm/configure.ac
index 799a5df..96d0ffd 100644
--- a/sim/arm/configure.ac
+++ b/sim/arm/configure.ac
@@ -5,4 +5,11 @@ sinclude(../common/acinclude.m4)
 
 SIM_AC_COMMON
 
+SIM_AC_OPTION_ENDIAN
+SIM_AC_OPTION_ALIGNMENT(STRICT_ALIGNMENT,STRICT_ALIGNMENT)
+SIM_AC_OPTION_HOSTENDIAN
+SIM_AC_OPTION_ENVIRONMENT
+SIM_AC_OPTION_INLINE
+SIM_AC_OPTION_WARNINGS
+
 SIM_AC_OUTPUT
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