sim: convert to bfd_endian
[deliverable/binutils-gdb.git] / sim / mips / configure
index 792d77ca99f49016ad308f3754d7bbcd1c2fa1c9..c31d65e652910ffde3e67ea4bee4a06fabdae352 100755 (executable)
@@ -609,6 +609,8 @@ sim_multi_src
 sim_multi_igen_configs
 sim_multi_flags
 sim_gen
+sim_micromips16_flags
+sim_micromips_flags
 sim_m16_flags
 sim_igen_flags
 SIM_SUBTARGET
@@ -643,6 +645,8 @@ SED
 LIBTOOL
 PLUGINS_FALSE
 PLUGINS_TRUE
+zlibinc
+zlibdir
 CATOBJEXT
 GENCAT
 INSTOBJEXT
@@ -753,7 +757,7 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
-with_zlib
+with_system_zlib
 enable_plugins
 enable_shared
 enable_static
@@ -1424,36 +1428,49 @@ Optional Features:
   --disable-libtool-lock  avoid locking (might break parallel builds)
   --enable-maintainer-mode  enable make rules and dependencies not useful
                          (and sometimes confusing) to the casual installer
-  --enable-sim-bswap                   Use Host specific BSWAP instruction.
-  --enable-sim-cflags=opts             Extra CFLAGS for use in building simulator
-  --enable-sim-debug=opts              Enable debugging flags
-  --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-inline=inlines          Specify which functions should be inlined.
-  --enable-sim-alignment=align         Specify strict,  nonstrict or forced alignment of memory accesses.
-  --enable-sim-hostendian=end          Specify host byte endian orientation.
+  --enable-sim-bswap      Use Host specific BSWAP instruction
+  --enable-sim-cflags=opts
+                          Extra CFLAGS for use in building simulator
+  --enable-sim-debug=opts Enable debugging flags (for developers of the sim
+                          itself)
+  --enable-sim-stdio      Specify whether to use stdio for console
+                          input/output
+  --enable-sim-trace=opts Enable tracing of simulated programs
+  --enable-sim-profile=opts
+                          Enable profiling flags
+  --enable-sim-inline=inlines
+                          Specify which functions should be inlined
+  --enable-sim-alignment=align
+                          Specify strict, nonstrict or forced alignment of
+                          memory accesses
+  --enable-sim-hostendian=end
+                          Specify host byte endian orientation
   --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
-  --enable-sim-reserved-bits           Specify whether to check reserved bits in instruction.
-  --enable-sim-endian=endian           Specify target byte endian orientation.
-  --enable-sim-bitsize=N               Specify target bitsize (32 or 64).
-  --enable-sim-float                   Specify that the target processor has floating point hardware.
-  --enable-sim-smp=n                   Specify number of processors to configure for (default ${default_sim_smp}).
+  --enable-sim-reserved-bits
+                          Specify whether to check reserved bits in
+                          instruction
+  --enable-sim-endian=endian
+                          Specify target byte endian orientation
+  --enable-sim-bitsize=N  Specify target bitsize (32 or 64)
+  --enable-sim-float      Specify that the target processor has floating point
+                          hardware
+  --enable-sim-smp=n      Specify number of processors to configure for
+                          (default ${default_sim_smp})
   --enable-sim-hardware=LIST
                           Specify the hardware to be included in the build.
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
-  --with-zlib             include zlib support (auto/yes/no) default=auto
+  --with-system-zlib      use installed libz
   --with-pic              try to use only PIC/non-PIC objects [default=use
                           both]
   --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
-  --with-pkgversion=PKG   Use PKG in the version string in place of "GDB"
+  --with-pkgversion=PKG   Use PKG in the version string in place of "SIM"
   --with-bugurl=URL       Direct users to URL to report a bug
   --with-x                use the X Window System
 
@@ -2253,7 +2270,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 # SIM_AC_OUTPUT is a cover function to AC_OUTPUT to generate the Makefile.
 # It is intended to be invoked last.
 #
-# The simulator's configure.in should look like:
+# The simulator's configure.ac should look like:
 #
 # dnl Process this file with autoconf to produce a configure script.
 # AC_PREREQ(2.64)dnl
@@ -2315,7 +2332,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-
 # libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
 #
 #   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
@@ -8316,8 +8332,6 @@ else
 fi
 
 
-
-
 # Some of the common include files depend on bfd.h, and bfd.h checks
 # that config.h is included first by testing that the PACKAGE macro
 # is defined.
@@ -8728,88 +8742,21 @@ fi
 # BFD conditionally uses zlib, so we must link it in if libbfd does, by
 # using the same condition.
 
-  # See if the user specified whether he wants zlib support or not.
-
-# Check whether --with-zlib was given.
-if test "${with_zlib+set}" = set; then :
-  withval=$with_zlib;
-else
-  with_zlib=auto
-fi
-
-
-  if test "$with_zlib" != "no"; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing zlibVersion" >&5
-$as_echo_n "checking for library containing zlibVersion... " >&6; }
-if test "${ac_cv_search_zlibVersion+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_func_search_save_LIBS=$LIBS
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
+  # Use the system's zlib library.
+  zlibdir="-L\$(top_builddir)/../zlib"
+  zlibinc="-I\$(top_srcdir)/../zlib"
 
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char zlibVersion ();
-int
-main ()
-{
-return zlibVersion ();
-  ;
-  return 0;
-}
-_ACEOF
-for ac_lib in '' z; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+# Check whether --with-system-zlib was given.
+if test "${with_system_zlib+set}" = set; then :
+  withval=$with_system_zlib; if test x$with_system_zlib = xyes ; then
+    zlibdir=
+    zlibinc=
   fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_zlibVersion=$ac_res
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if test "${ac_cv_search_zlibVersion+set}" = set; then :
-  break
-fi
-done
-if test "${ac_cv_search_zlibVersion+set}" = set; then :
-
-else
-  ac_cv_search_zlibVersion=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_zlibVersion" >&5
-$as_echo "$ac_cv_search_zlibVersion" >&6; }
-ac_res=$ac_cv_search_zlibVersion
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-  for ac_header in zlib.h
-do :
-  ac_fn_c_check_header_mongrel "$LINENO" "zlib.h" "ac_cv_header_zlib_h" "$ac_includes_default"
-if test "x$ac_cv_header_zlib_h" = x""yes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_ZLIB_H 1
-_ACEOF
 
 fi
 
-done
 
-fi
 
-    if test "$with_zlib" = "yes" -a "$ac_cv_header_zlib_h" != "yes"; then
-      as_fn_error "zlib (libz) library was explicitly requested but not found" "$LINENO" 5
-    fi
-  fi
 
 
 # BFD uses libdl when when plugins enabled.
@@ -12400,7 +12347,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12403 "configure"
+#line 12350 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12506,7 +12453,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12509 "configure"
+#line 12456 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
 # Check whether --enable-sim-trace was given.
 if test "${enable_sim_trace+set}" = set; then :
   enableval=$enable_sim_trace; case "${enableval}" in
-  yes) sim_trace="-DTRACE=1 -DWITH_TRACE=-1";;
-  no)  sim_trace="-DTRACE=0 -DWITH_TRACE=0";;
+  yes) sim_trace="-DWITH_TRACE=-1";;
+  no)  sim_trace="-DWITH_TRACE=0";;
   [-0-9]*)
-       sim_trace="-DTRACE='(${enableval})' -DWITH_TRACE='(${enableval})'";;
+       sim_trace="-DWITH_TRACE='(${enableval})'";;
   [[:lower:]]*)
        sim_trace=""
        for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
@@ -12902,7 +12849,7 @@ if test "${with_pkgversion+set}" = set; then :
       *)   PKGVERSION="($withval) " ;;
      esac
 else
-  PKGVERSION="(GDB) "
+  PKGVERSION="(SIM) "
 
 fi
 
@@ -13090,9 +13037,9 @@ 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";;
+  no)   sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_UNKNOWN";;
+  b*|B*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_BIG";;
+  l*|L*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_LITTLE";;
   *)    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
@@ -13326,12 +13273,12 @@ $as_echo "#define AC_APPLE_UNIVERSAL_BUILD 1" >>confdefs.h
  esac
 
   if test $ac_cv_c_bigendian = yes; then
-    sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN"
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_BIG"
   else
-    sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN"
+    sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_LITTLE"
   fi
 else
-  sim_hostendian="-DWITH_HOST_BYTE_ORDER=0"
+  sim_hostendian="-DWITH_HOST_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
 fi
 fi
 
@@ -13479,14 +13426,14 @@ esac
 mips_endian=
 default_endian=
 case "${target}" in
-  mips64el*-*-*)       mips_endian=LITTLE_ENDIAN ;;
-  mips64vr*el-*-*)      default_endian=LITTLE_ENDIAN ;;
-  mips64*-*-*)          default_endian=BIG_ENDIAN ;;
-  mips16*-*-*)          default_endian=BIG_ENDIAN ;;
-  mipsisa32*-*-*)       default_endian=BIG_ENDIAN ;;
-  mipsisa64*-*-*)       default_endian=BIG_ENDIAN ;;
-  mips*-*-*)            default_endian=BIG_ENDIAN ;;
-  *)                    default_endian=BIG_ENDIAN ;;
+  mips64el*-*-*)        mips_endian=LITTLE ;;
+  mips64vr*el-*-*)      default_endian=LITTLE ;;
+  mips64*-*-*)          default_endian=BIG ;;
+  mips16*-*-*)          default_endian=BIG ;;
+  mipsisa32*-*-*)       default_endian=BIG ;;
+  mipsisa64*-*-*)       default_endian=BIG ;;
+  mips*-*-*)            default_endian=BIG ;;
+  *)                    default_endian=BIG ;;
 esac
 
 wire_endian="$mips_endian"
@@ -13494,26 +13441,26 @@ default_endian="$default_endian"
 # Check whether --enable-sim-endian was given.
 if test "${enable_sim_endian+set}" = set; then :
   enableval=$enable_sim_endian; case "${enableval}" in
-  b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BIG_ENDIAN";;
-  l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=LITTLE_ENDIAN";;
+  b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_BIG";;
+  l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_LITTLE";;
   yes)  if test x"$wire_endian" != x; then
-          sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
+          sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
         else
-           if test x"$default_endian" != x; then
-            sim_endian="-DWITH_TARGET_BYTE_ORDER=${default_endian}"
+         if test x"$default_endian" != x; then
+            sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
           else
             echo "No hard-wired endian for target $target" 1>&6
-            sim_endian="-DWITH_TARGET_BYTE_ORDER=0"
+            sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
           fi
         fi;;
   no)   if test x"$default_endian" != x; then
-          sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
+          sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
         else
           if test x"$wire_endian" != x; then
-            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${wire_endian}"
+            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
           else
             echo "No default endian for target $target" 1>&6
-            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=0"
+            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_UNKNOWN"
           fi
         fi;;
   *)    as_fn_error "\"Unknown value $enableval for --enable-sim-endian\"" "$LINENO" 5; sim_endian="";;
@@ -13523,10 +13470,10 @@ if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
 fi
 else
   if test x"$default_endian" != x; then
-  sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
+  sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=BFD_ENDIAN_${default_endian}"
 else
   if test x"$wire_endian" != x; then
-    sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
+    sim_endian="-DWITH_TARGET_BYTE_ORDER=BFD_ENDIAN_${wire_endian}"
   else
     sim_endian=
   fi
@@ -13727,11 +13674,11 @@ case "${target}" in
                        sim_multi_default=mips5000
                        ;;
   mips*-sde-elf* | mips*-mti-elf*)
-                       sim_gen=M16
-                       sim_igen_machine="-M mips64r2,mips3d,mips16,mips16e,mdmx,dsp,dsp2,smartmips"
-                       sim_m16_machine="-M mips16,mips16e,mips64r2"
-                       sim_igen_filter="32,64,f"
-                       sim_mach_default="mipsisa64r2"
+                       sim_gen=MULTI
+                       sim_multi_configs="\
+                         micromips:micromips64,micromipsdsp:32,64,f:mips_micromips\
+                         mips64r2:mips64r2,mips3d,mips16,mips16e,mdmx,dsp,dsp2,smartmips:32,64,f:mipsisa64r2"
+                       sim_multi_default=mipsisa64r2
                        ;;
   mips64*-*-*)         sim_igen_filter="32,64,f"
                        sim_gen=IGEN
@@ -13740,11 +13687,11 @@ case "${target}" in
                        sim_igen_filter="32,64,f"
                        sim_m16_filter="16"
                        ;;
-  mipsisa32r2*-*-*)    sim_gen=M16
-                       sim_igen_machine="-M mips32r2,mips16,mips16e,mdmx,dsp,dsp2,smartmips"
-                       sim_m16_machine="-M mips16,mips16e,mips32r2"
-                       sim_igen_filter="32,f"
-                       sim_mach_default="mipsisa32r2"
+  mipsisa32r2*-*-*)    sim_gen=MULTI
+                       sim_multi_configs="\
+                         micromips:micromips32,micromipsdsp:32,f:mips_micromips\
+                         mips32r2:mips32r2,mips3d,mips16,mips16e,mdmx,dsp,dsp2,smartmips:32,f:mipsisa32r2"
+                       sim_multi_default=mipsisa32r2
                        ;;
   mipsisa32*-*-*)      sim_gen=M16
                        sim_igen_machine="-M mips32,mips16,mips16e,smartmips"
@@ -13809,20 +13756,20 @@ if test ${sim_gen} = MULTI; then
 
   # Simple sanity check.
   if test -z "${sim_multi_configs}" || test -z "${sim_multi_default}"; then
-    as_fn_error "Error in configure.in: MULTI simulator not set up correctly" "$LINENO" 5
+    as_fn_error "Error in configure.ac: MULTI simulator not set up correctly" "$LINENO" 5
   fi
 
   # Start in a known state.
   rm -f multi-include.h multi-run.c
   sim_multi_flags=
   sim_multi_src=
-  sim_multi_obj=multi-run.o
+  sim_multi_obj=
   sim_multi_igen_configs=
   sim_seen_default=no
 
   cat << __EOF__ > multi-run.c
 /* Main entry point for MULTI simulators.
-   Copyright (C) 2003-2015 Free Software Foundation, Inc.
+   Copyright (C) 2003-2016 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -13843,6 +13790,8 @@ if test ${sim_gen} = MULTI; then
 
 #include "sim-main.h"
 #include "multi-include.h"
+#include "elf-bfd.h"
+#include "elf/mips.h"
 
 #define SD sd
 #define CPU cpu
@@ -13857,6 +13806,9 @@ sim_engine_run (SIM_DESC sd,
 
   if (STATE_ARCHITECTURE (sd) == NULL)
     mach = bfd_mach_${sim_multi_default};
+  else if (elf_elfheader (sd->base.prog_bfd)->e_flags
+          & EF_MIPS_ARCH_ASE_MICROMIPS)
+    mach = bfd_mach_mips_micromips;
   else
     mach = STATE_ARCHITECTURE (SD)->mach;
 
@@ -13886,7 +13838,7 @@ __EOF__
     # the ${sim_multi_configs} entry.
     sim_multi_flags="${sim_multi_flags} -F ${filter} -M ${machine}"
 
-    # Check whether mips16 handling is needed.
+    # Check whether special handling is needed.
     case ${c} in
       *:*mips16*:*)
        # Run igen twice, once for normal mode and once for mips16.
@@ -13899,6 +13851,30 @@ __EOF__
        sim_multi_obj="${sim_multi_obj} m16${name}_run.o"
        sim_multi_flags="${sim_multi_flags} -F 16"
        ;;
+      *:*micromips32*:*)
+       # Run igen thrice, once for micromips32, once for micromips16,
+       # and once for m32.
+       ws="micromips_m32 micromips16 micromips32"
+
+       # The top-level function for the micromips simulator is
+       # in a file micromips${name}_run.c, generated by the
+       # tmp-run-multi Makefile rule.
+       sim_multi_src="${sim_multi_src} micromips${name}_run.c"
+       sim_multi_obj="${sim_multi_obj} micromips${name}_run.o"
+       sim_multi_flags="${sim_multi_flags} -F 16,32"
+       ;;
+      *:*micromips64*:*)
+       # Run igen thrice, once for micromips64, once for micromips16,
+       # and once for m64.
+       ws="micromips_m64 micromips16 micromips64"
+
+       # The top-level function for the micromips simulator is
+       # in a file micromips${name}_run.c, generated by the
+       # tmp-run-multi Makefile rule.
+       sim_multi_src="${sim_multi_src} micromips${name}_run.c"
+       sim_multi_obj="${sim_multi_obj} micromips${name}_run.o"
+       sim_multi_flags="${sim_multi_flags} -F 16,32,64"
+       ;;
       *)
        ws=m32
        ;;
@@ -13934,7 +13910,7 @@ __EOF__
 
   # Check whether we added a 'default:' label.
   if test ${sim_seen_default} = no; then
-    as_fn_error "Error in configure.in: \${sim_multi_configs} doesn't have an entry for \${sim_multi_default}" "$LINENO" 5
+    as_fn_error "Error in configure.ac: \${sim_multi_configs} doesn't have an entry for \${sim_multi_default}" "$LINENO" 5
   fi
 
   cat << __EOF__ >> multi-run.c
@@ -13978,12 +13954,14 @@ else
   sim_multi_src=doesnt-exist.c
 
   if test x"${sim_mach_default}" = x""; then
-    as_fn_error "Error in configure.in: \${sim_mach_default} not defined" "$LINENO" 5
+    as_fn_error "Error in configure.ac: \${sim_mach_default} not defined" "$LINENO" 5
   fi
   SIM_SUBTARGET="$SIM_SUBTARGET -DMIPS_MACH_DEFAULT=bfd_mach_${sim_mach_default}"
 fi
 sim_igen_flags="-F ${sim_igen_filter} ${sim_igen_machine} ${sim_igen_smp}"
 sim_m16_flags=" -F ${sim_m16_filter}  ${sim_m16_machine}  ${sim_igen_smp}"
+sim_micromips16_flags=" -F ${sim_micromips16_filter}  ${sim_micromips16_machine}  ${sim_igen_smp}"
+sim_micromips_flags=" -F ${sim_micromips_filter}  ${sim_micromips_machine}  ${sim_igen_smp}"
 
 
 
@@ -14001,18 +13979,11 @@ case "${target}" in
   mips*tx39*)
        hw_enabled=yes
        hw_extra_devices="tx3904cpu tx3904irc tx3904tmr tx3904sio"
-       SIM_SUBTARGET="$SIM_SUBTARGET -DTARGET_TX3904=1"
        ;;
   *)
        ;;
 esac
 
-if test x"$hw_enabled" != x"no"; then
-  enable_sim_hardware=yes
-else
-  enable_sim_hardware=no
-fi
-
 if test "$hw_devices"; then
   hardware="$hw_devices"
 else
@@ -14027,21 +13998,18 @@ sim_hw_objs="\$(SIM_COMMON_HW_OBJS) `echo $sim_hw | sed -e 's/\([^ ][^ ]*\)/dv-\
 # Check whether --enable-sim-hardware was given.
 if test "${enable_sim_hardware+set}" = set; then :
   enableval=$enable_sim_hardware;
+else
+  enable_sim_hardware="$hw_enabled"
 fi
 
 case ${enable_sim_hardware} in
-  yes)  sim_hw_p=yes;;
-  no)   sim_hw_p=no;;
-  ,*)   sim_hw_p=yes; hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
-  *,)   sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
-  *)    sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
+  yes|no) ;;
+  ,*) hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
+  *,) hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
+  *)  hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
 esac
 
-if test "$sim_hw_p" != yes; then
-  if test "$hw_enabled" = "always"; then
-    as_fn_error "Sorry, but this simulator requires that hardware support
-be enabled. Please configure without --disable-hw-support." "$LINENO" 5
-  fi
+if test "$enable_sim_hardware" = no; then
   sim_hw_objs=
   sim_hw_cflags="-DWITH_HW=0"
   sim_hw=
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