* common/aclocal.m4: Add include of ../../config/zlib.m4.
[deliverable/binutils-gdb.git] / sim / common / aclocal.m4
index e25c37bf0e81d80433b30abfd1098a3bbbee715e..9a6a4c83a31c3fd90736ec6bb2b1b8ff2953be68 100644 (file)
@@ -7,29 +7,31 @@
 #
 # The simulator's configure.in should look like:
 #
-# dnl Process this file with `autoconf -l ../common' to produce a configure script.
+# dnl Process this file with autoconf to produce a configure script.
+# sinclude(../common/aclocal.m4)
 # AC_PREREQ(2.5)dnl
 # AC_INIT(Makefile.in)
+#
 # SIM_AC_COMMON
 #
 # ... target specific stuff ...
 #
 # SIM_AC_OUTPUT
 
-AC_DEFUN(SIM_AC_COMMON,
+# Include global overrides and fixes for Autoconf.
+m4_include(../../config/override.m4)
+sinclude([../../config/zlib.m4])
+
+AC_DEFUN([SIM_AC_COMMON],
 [
 # autoconf.info says this should be called right after AC_INIT.
-AC_CONFIG_HEADER(config.h:config.in)
-
-AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/../..)
+AC_CONFIG_HEADER(ifelse([$1],,config.h,[$1]):config.in)
 AC_CANONICAL_SYSTEM
 AC_ARG_PROGRAM
 AC_PROG_CC
 AC_PROG_INSTALL
-AC_C_BIGENDIAN
 
 # 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
@@ -43,18 +45,68 @@ AR=${AR-ar}
 AC_SUBST(AR)
 AC_PROG_RANLIB
 
+dnl We don't use gettext, but bfd does.  So we do the appropriate checks
+dnl to see if there are intl libraries we should link against.
+ALL_LINGUAS=
+ZW_GNU_GETTEXT_SISTER_DIR(../../intl)
+
+# Check for common headers.
+# FIXME: Seems to me this can cause problems for i386-windows hosts.
+# At one point there were hardcoded AC_DEFINE's if ${host} = i386-*-windows*.
+AC_CHECK_HEADERS(stdlib.h string.h strings.h unistd.h time.h)
+AC_CHECK_HEADERS(sys/time.h sys/resource.h)
+AC_CHECK_HEADERS(fcntl.h fpu_control.h)
+AC_CHECK_HEADERS(dlfcn.h errno.h sys/stat.h)
+AC_CHECK_FUNCS(getrusage time sigaction __setfpucw)
+
+# Check for socket libraries
+AC_CHECK_LIB(socket, bind)
+AC_CHECK_LIB(nsl, gethostbyname)
+
 . ${srcdir}/../../bfd/configure.host
 
-dnl Standard simulator options.
+dnl Standard (and optional) simulator options.
 dnl Eventually all simulators will support these.
 dnl Do not add any here that cannot be supported by all simulators.
 dnl Do not add similar but different options to a particular simulator,
 dnl all shall eventually behave the same way.
 
+
+dnl We don't use automake, but we still want to support
+dnl --enable-maintainer-mode.
+USE_MAINTAINER_MODE=no
+AC_ARG_ENABLE(maintainer-mode,
+[  --enable-maintainer-mode            Enable developer functionality.],
+[case "${enableval}" in
+  yes) MAINT="" USE_MAINTAINER_MODE=yes ;;
+  no)  MAINT="#" ;;
+  *)   AC_MSG_ERROR("--enable-maintainer-mode does not take a value"); MAINT="#" ;;
+esac
+if test x"$silent" != x"yes" && test x"$MAINT" = x""; then
+  echo "Setting maintainer mode" 6>&1
+fi],[MAINT="#"])dnl
+AC_SUBST(MAINT)
+
+
+dnl This is a generic option to enable special byte swapping
+dnl insns on *any* cpu.
+AC_ARG_ENABLE(sim-bswap,
+[  --enable-sim-bswap                  Use Host specific BSWAP instruction.],
+[case "${enableval}" in
+  yes) sim_bswap="-DWITH_BSWAP=1 -DUSE_BSWAP=1";;
+  no)  sim_bswap="-DWITH_BSWAP=0";;
+  *)   AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
+  echo "Setting bswap flags = $sim_bswap" 6>&1
+fi],[sim_bswap=""])dnl
+AC_SUBST(sim_bswap)
+
+
 AC_ARG_ENABLE(sim-cflags,
 [  --enable-sim-cflags=opts            Extra CFLAGS for use in building simulator],
 [case "${enableval}" in
-  yes)  sim_cflags="-O2";;
+  yes)  sim_cflags="-O2 -fomit-frame-pointer";;
   trace) AC_MSG_ERROR("Please use --enable-sim-debug instead."); sim_cflags="";;
   no)   sim_cflags="";;
   *)    sim_cflags=`echo "${enableval}" | sed -e "s/,/ /g"`;;
@@ -64,47 +116,100 @@ if test x"$silent" != x"yes" && test x"$sim_cflags" != x""; then
 fi],[sim_cflags=""])dnl
 AC_SUBST(sim_cflags)
 
+
 dnl --enable-sim-debug is for developers of the simulator
 dnl the allowable values are work-in-progress
 AC_ARG_ENABLE(sim-debug,
 [  --enable-sim-debug=opts             Enable debugging flags],
 [case "${enableval}" in
-  yes) sim_debug="-DDEBUG=7";;
-  no)  sim_debug="-DDEBUG=0";;
-  *)   sim_debug="-DDEBUG='(${enableval})'";;
+  yes) sim_debug="-DDEBUG=7 -DWITH_DEBUG=7";;
+  no)  sim_debug="-DDEBUG=0 -DWITH_DEBUG=0";;
+  *)   sim_debug="-DDEBUG='(${enableval})' -DWITH_DEBUG='(${enableval})'";;
 esac
 if test x"$silent" != x"yes" && test x"$sim_debug" != x""; then
   echo "Setting sim debug = $sim_debug" 6>&1
 fi],[sim_debug=""])dnl
 AC_SUBST(sim_debug)
 
+
+dnl --enable-sim-stdio is for users of the simulator
+dnl It determines if IO from the program is routed through STDIO (buffered)
+AC_ARG_ENABLE(sim-stdio,
+[  --enable-sim-stdio                  Specify whether to use stdio for console input/output.],
+[case "${enableval}" in
+  yes) sim_stdio="-DWITH_STDIO=DO_USE_STDIO";;
+  no)  sim_stdio="-DWITH_STDIO=DONT_USE_STDIO";;
+  *)   AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-stdio"); sim_stdio="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_stdio" != x""; then
+  echo "Setting stdio flags = $sim_stdio" 6>&1
+fi],[sim_stdio=""])dnl
+AC_SUBST(sim_stdio)
+
+
 dnl --enable-sim-trace is for users of the simulator
-dnl the allowable values are work-in-progress
+dnl The argument is either a bitmask of things to enable [exactly what is
+dnl up to the simulator], or is a comma separated list of names of tracing
+dnl elements to enable.  The latter is only supported on simulators that
+dnl use WITH_TRACE.
 AC_ARG_ENABLE(sim-trace,
 [  --enable-sim-trace=opts             Enable tracing flags],
 [case "${enableval}" in
-  yes) sim_trace="-DTRACE=1";;
-  no)  sim_trace="-DTRACE=0";;
-  *)   sim_trace="-DTRACE='(${enableval})'";;
+  yes) sim_trace="-DTRACE=1 -DWITH_TRACE=-1";;
+  no)  sim_trace="-DTRACE=0 -DWITH_TRACE=0";;
+  [[-0-9]]*)
+       sim_trace="-DTRACE='(${enableval})' -DWITH_TRACE='(${enableval})'";;
+  [[a-z]]*)
+       sim_trace=""
+       for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
+         if test x"$sim_trace" = x; then
+           sim_trace="-DWITH_TRACE='(TRACE_$x"
+         else
+           sim_trace="${sim_trace}|TRACE_$x"
+         fi
+       done
+       sim_trace="$sim_trace)'" ;;
 esac
 if test x"$silent" != x"yes" && test x"$sim_trace" != x""; then
   echo "Setting sim trace = $sim_trace" 6>&1
 fi],[sim_trace=""])dnl
 AC_SUBST(sim_trace)
 
-dnl This is a generic option to enable special byte swapping
-dnl insns on *any* cpu.
-AC_ARG_ENABLE(sim-bswap,
-[  --enable-sim-bswap                  Use Host specific BSWAP instruction.],
+
+dnl --enable-sim-profile
+dnl The argument is either a bitmask of things to enable [exactly what is
+dnl up to the simulator], or is a comma separated list of names of profiling
+dnl elements to enable.  The latter is only supported on simulators that
+dnl use WITH_PROFILE.
+AC_ARG_ENABLE(sim-profile,
+[  --enable-sim-profile=opts           Enable profiling flags],
 [case "${enableval}" in
-  yes) sim_bswap="-DUSE_BSWAP";;
-  no)  sim_bswap="";;
-  *)   AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
+  yes) sim_profile="-DPROFILE=1 -DWITH_PROFILE=-1";;
+  no)  sim_profile="-DPROFILE=0 -DWITH_PROFILE=0";;
+  [[-0-9]]*)
+       sim_profile="-DPROFILE='(${enableval})' -DWITH_PROFILE='(${enableval})'";;
+  [[a-z]]*)
+       sim_profile=""
+       for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
+         if test x"$sim_profile" = x; then
+           sim_profile="-DWITH_PROFILE='(PROFILE_$x"
+         else
+           sim_profile="${sim_profile}|PROFILE_$x"
+         fi
+       done
+       sim_profile="$sim_profile)'" ;;
 esac
-if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
-  echo "Setting bswap flags = $sim_bswap" 6>&1
-fi],[sim_bswap=""])dnl
-AC_SUBST(sim_bswap)
+if test x"$silent" != x"yes" && test x"$sim_profile" != x""; then
+  echo "Setting sim profile = $sim_profile" 6>&1
+fi],[sim_profile="-DPROFILE=1 -DWITH_PROFILE=-1"])dnl
+AC_SUBST(sim_profile)
+
+
+dnl Types used by common code
+AC_TYPE_SIGNAL
+
+dnl Detect exe extension
+AC_EXEEXT
 
 dnl These are available to append to as desired.
 sim_link_files=
@@ -120,203 +225,712 @@ else
   sim_link_files=../common/tconfig.in
 fi
 
+# targ-vals.def points to the libc macro description file.
 case "${target}" in
-*-*-*)
-       sim_link_files="${sim_link_files} ../common/nltvals.def"
-       sim_link_links="${sim_link_links} targ-vals.def"
-       ;;
+*-*-*) TARG_VALS_DEF=../common/nltvals.def ;;
 esac
+sim_link_files="${sim_link_files} ${TARG_VALS_DEF}"
+sim_link_links="${sim_link_links} targ-vals.def"
 
 ]) dnl End of SIM_AC_COMMON
 
-dnl Generate the Makefile in a target specific directory.
-dnl Substitutions aren't performed on the file in AC_SUBST_FILE,
-dnl so this is a cover macro to tuck the details away of how we cope.
-dnl It also inserts default definitions of the SIM_FOO variables.
 
-AC_DEFUN(SIM_AC_OUTPUT,
+dnl Additional SIM options that can (optionally) be configured
+dnl For optional simulator options, a macro SIM_AC_OPTION_* is defined.
+dnl Simulators that wish to use the relevant option specify the macro
+dnl in the simulator specific configure.in file between the SIM_AC_COMMON
+dnl and SIM_AC_OUTPUT lines.
+
+
+dnl Specify the running environment.
+dnl If the simulator invokes this in its configure.in then without this option
+dnl the default is the user environment and all are runtime selectable.
+dnl If the simulator doesn't invoke this, only the user environment is
+dnl supported.
+dnl ??? Until there is demonstrable value in doing something more complicated,
+dnl let's not.
+AC_DEFUN([SIM_AC_OPTION_ENVIRONMENT],
 [
+AC_ARG_ENABLE(sim-environment,
+[  --enable-sim-environment=environment        Specify mixed, user, virtual or operating 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";;
+  *)   AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-environment");
+       sim_environment="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_environment" != x""; then
+  echo "Setting sim environment = $sim_environment" 6>&1
+fi],
+[sim_environment="-DWITH_ENVIRONMENT=ALL_ENVIRONMENT"])dnl
+])
+AC_SUBST(sim_environment)
+
+
+dnl Specify the alignment restrictions of the target architecture.
+dnl Without this option all possible alignment restrictions are accommodated.
+dnl arg[1] is hardwired target alignment
+dnl arg[2] is default target alignment
+AC_DEFUN([SIM_AC_OPTION_ALIGNMENT],
+wire_alignment="[$1]"
+default_alignment="[$2]"
+[
+AC_ARG_ENABLE(sim-alignment,
+[  --enable-sim-alignment=align                Specify strict,  nonstrict or forced alignment of memory accesses.],
+[case "${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;;
+  *)   AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-alignment"); sim_alignment="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_alignment" != x""; then
+  echo "Setting alignment flags = $sim_alignment" 6>&1
+fi],
+[if test x"$default_alignment" != x; then
+  sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
+else
+  if test x"$wire_alignment" != x; then
+    sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
+  else
+    sim_alignment=
+  fi
+fi])dnl
+])dnl
+AC_SUBST(sim_alignment)
+
+
+dnl Conditionally compile in assertion statements.
+AC_DEFUN([SIM_AC_OPTION_ASSERT],
+[
+AC_ARG_ENABLE(sim-assert,
+[  --enable-sim-assert                 Specify whether to perform random assertions.],
+[case "${enableval}" in
+  yes) sim_assert="-DWITH_ASSERT=1";;
+  no)  sim_assert="-DWITH_ASSERT=0";;
+  *)   AC_MSG_ERROR("--enable-sim-assert does not take a value"); sim_assert="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_assert" != x""; then
+  echo "Setting assert flags = $sim_assert" 6>&1
+fi],[sim_assert=""])dnl
+])
+AC_SUBST(sim_assert)
+
+
+
+dnl --enable-sim-bitsize is for developers of the simulator
+dnl It specifies the number of BITS in the target.
+dnl arg[1] is the number of bits in a word
+dnl arg[2] is the number assigned to the most significant bit
+dnl arg[3] is the number of bits in an address
+dnl arg[4] is the number of bits in an OpenFirmware cell.
+dnl FIXME: this information should be obtained from bfd/archure
+AC_DEFUN([SIM_AC_OPTION_BITSIZE],
+wire_word_bitsize="[$1]"
+wire_word_msb="[$2]"
+wire_address_bitsize="[$3]"
+wire_cell_bitsize="[$4]"
+[AC_ARG_ENABLE(sim-bitsize,
+[  --enable-sim-bitsize=N              Specify target bitsize (32 or 64).],
+[sim_bitsize=
+case "${enableval}" in
+  64,63 | 64,63,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=63";;
+  32,31 | 32,31,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31";;
+  64,0 | 64,0,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0";;
+  32,0 | 64,0,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0";;
+  32) if test x"$wire_word_msb" != x -a x"$wire_word_msb" != x0; then
+        sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31"
+      else
+        sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0"
+      fi ;;
+  64) if test x"$wire_word_msb" != x -a x"$wire_word_msb" != x0; then
+        sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=63"
+      else
+        sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=0"
+      fi ;;
+  *)  AC_MSG_ERROR("--enable-sim-bitsize was given $enableval.  Expected 32 or 64") ;;
+esac
+# address bitsize
+tmp=`echo "${enableval}" | sed -e "s/^[[0-9]]*,*[[0-9]]*,*//"`
+case x"${tmp}" in
+  x ) ;;
+  x32 | x32,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_ADDRESS_BITSIZE=32" ;;
+  x64 | x64,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_ADDRESS_BITSIZE=64" ;;
+  * ) AC_MSG_ERROR("--enable-sim-bitsize was given address size $enableval.  Expected 32 or 64") ;;
+esac
+# cell bitsize
+tmp=`echo "${enableval}" | sed -e "s/^[[0-9]]*,*[[0-9*]]*,*[[0-9]]*,*//"`
+case x"${tmp}" in
+  x ) ;;
+  x32 | x32,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_CELL_BITSIZE=32" ;;
+  x64 | x64,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_CELL_BITSIZE=64" ;;
+  * ) AC_MSG_ERROR("--enable-sim-bitsize was given cell size $enableval.  Expected 32 or 64") ;;
+esac
+if test x"$silent" != x"yes" && test x"$sim_bitsize" != x""; then
+  echo "Setting bitsize flags = $sim_bitsize" 6>&1
+fi],
+[sim_bitsize=""
+if test x"$wire_word_bitsize" != x; then
+  sim_bitsize="$sim_bitsize -DWITH_TARGET_WORD_BITSIZE=$wire_word_bitsize"
+fi
+if test x"$wire_word_msb" != x; then
+  sim_bitsize="$sim_bitsize -DWITH_TARGET_WORD_MSB=$wire_word_msb"
+fi
+if test x"$wire_address_bitsize" != x; then
+  sim_bitsize="$sim_bitsize -DWITH_TARGET_ADDRESS_BITSIZE=$wire_address_bitsize"
+fi
+if test x"$wire_cell_bitsize" != x; then
+  sim_bitsize="$sim_bitsize -DWITH_TARGET_CELL_BITSIZE=$wire_cell_bitsize"
+fi])dnl
+])
+AC_SUBST(sim_bitsize)
 
-dnl Stuff that gets inserted into the Makefile.
-dnl This is done now and not in SIM_AC_COMMON to catch updated values for
-dnl LIBS, etc. that may get changed by target specific checks.
-
-COMMON_MAKEFILE_FRAG=makefile-temp-$$
-cat > $COMMON_MAKEFILE_FRAG <<EOF
-VPATH = ${srcdir}
-srcdir = ${srcdir}
-srcroot = \$(srcdir)/../..
-
-prefix = ${prefix}
-exec_prefix = ${exec_prefix}
-
-host_alias = ${host_alias}
-target_alias = ${target_alias}
-program_transform_name = ${program_transform_name}
-bindir = ${bindir}
-
-libdir = ${libdir}
-tooldir = \$(libdir)/\$(target_alias)
-
-datadir = ${datadir}
-mandir = ${mandir}
-man1dir = \$(mandir)/man1
-infodir = ${infodir}
-includedir = ${includedir}
-
-SHELL = /bin/sh
-
-INSTALL = \$(srcroot)/install.sh -c
-INSTALL_PROGRAM = ${INSTALL_PROGRAM}
-INSTALL_DATA = ${INSTALL_DATA}
-INSTALL_XFORM = \$(INSTALL) -t='\$(program_transform_name)'
-INSTALL_XFORM1= \$(INSTALL_XFORM) -b=.1
-
-CC = ${CC}
-CC_FOR_BUILD = ${CC_FOR_BUILD}
-CFLAGS = ${CFLAGS}
-SIM_CFLAGS = ${sim_cflags}
-SIM_DEBUG = ${sim_debug}
-SIM_TRACE = ${sim_trace}
-SIM_BSWAP = ${sim_bswap}
-
-HDEFINES = ${HDEFINES}
-TDEFINES =
-
-AR = ${AR}
-AR_FLAGS = rc
-RANLIB = ${RANLIB}
-MAKEINFO = makeinfo
-
-# Each simulator's Makefile.in defines one or more of these variables
-# as necessary.  The SIM_AC_OUTPUT macro then inserts those values
-# at '## Config'.
-
-# List of object files, less common parts.
-#SIM_OBJS =
-# List of flags to always pass to \$(CC).
-#SIM_EXTRA_CFLAGS =
-# List of extra libraries to link with.
-#SIM_EXTRA_LIBS =
-# List of extra program dependencies.
-#SIM_EXTRA_LIBDEPS =
-# Dependency of 'all' to build any extra files.
-#SIM_EXTRA_ALL =
-# Dependency of 'install' to install any extra files.
-#SIM_EXTRA_INSTALL =
-# Dependency of 'clean' to clean any extra files.
-#SIM_EXTRA_CLEAN =
-
-CONFIG_CFLAGS = ${DEFS} \$(SIM_CFLAGS) \$(SIM_DEBUG) \$(SIM_TRACE) \$(SIM_BSWAP) \
-  \$(SIM_EXTRA_CFLAGS) \$(HDEFINES) \$(TDEFINES)
-CSEARCH = -I. -I\$(srcdir) -I../common -I\$(srcdir)/../common \
-  -I../../include -I\$(srcroot)/include \
-  -I../../bfd -I\$(srcroot)/bfd -I\$(srcroot)/gdb \
-  -I../../opcodes -I\$(srcroot)/opcodes
-ALL_CFLAGS = \$(CONFIG_CFLAGS) \$(CSEARCH) \$(CFLAGS)
-BUILD_CFLAGS = -g -O \$(CSEARCH)
-
-.NOEXPORT:
-MAKEOVERRIDES=
-
-LIBIBERTY_LIB = ../../libiberty/libiberty.a
-BFD_LIB = ../../bfd/libbfd.a
-OPCODES_LIB = ../../opcodes/libopcodes.a
-CONFIG_LIBS = ${LIBS}
-LIBDEPS = \$(BFD_LIB) \$(OPCODES_LIB) \$(LIBIBERTY_LIB) \
-       \$(SIM_EXTRA_LIBDEPS)
-EXTRA_LIBS = \$(BFD_LIB) \$(OPCODES_LIB) \$(LIBIBERTY_LIB) \
-       \$(CONFIG_LIBS) \$(SIM_EXTRA_LIBS)
-
-LIB_OBJS = callback.o targ-map.o \$(SIM_OBJS)
-
-all: run libsim.a \$(SIM_EXTRA_ALL)
-
-libsim.a: \$(LIB_OBJS)
-       rm -f libsim.a
-       \$(AR) \$(ARFLAGS) libsim.a \$(LIB_OBJS)
-       \$(RANLIB) libsim.a
-
-run: run.o libsim.a \$(LIBDEPS)
-       \$(CC) \$(ALL_CFLAGS) -o run \
-         run.o libsim.a \$(EXTRA_LIBS)
-
-run.o: \$(srcdir)/../common/run.c config.h tconfig.h \
-         \$(srcroot)/include/callback.h
-       \$(CC) -c \$(srcdir)/../common/run.c \$(ALL_CFLAGS)
-
-callback.o: \$(srcdir)/../common/callback.c config.h tconfig.h \
-         \$(srcroot)/include/callback.h targ-vals.h
-       \$(CC) -c \$(srcdir)/../common/callback.c \$(ALL_CFLAGS)
-
-gentmap: \$(srcdir)/../common/gentmap.c targ-vals.def
-       \$(CC_FOR_BUILD) \$(srcdir)/../common/gentmap.c -o gentmap \$(BUILD_CFLAGS) -I\$(srcdir)/../common
-
-targ-vals.h: gentmap
-       rm -f targ-vals.h
-       ./gentmap -h >targ-vals.h
-
-targ-map.c: gentmap
-       rm -f targ-map.c
-       ./gentmap -c >targ-map.c
-
-install: install-common \$(SIM_EXTRA_INSTALL)
-
-install-common:
-       \$(INSTALL_XFORM) run \$(bindir)/run
-
-check:
-
-info:
-clean-info:
-install-info:
-
-tags etags: TAGS
-
-TAGS: force
-       etags *.c *.h
-
-clean: \$(SIM_EXTRA_CLEAN)
-       rm -f *.[[oa]] *~ core gentmap targ-map.c targ-vals.h 
-       rm -f run libsim.a
 
-distclean mostlyclean maintainer-clean realclean: clean
-       rm -f TAGS
-       rm -f Makefile config.cache config.log config.status
-       rm -f tconfig.h config.h stamp-h targ-vals.def
-
-.c.o:
-       \$(CC) -c \$(ALL_CFLAGS) \$<
 
-# Dummy target to force execution of dependent targets.
-force:
+dnl --enable-sim-endian={yes,no,big,little} is for simulators
+dnl that support both big and little endian targets.
+dnl arg[1] is hardwired target endianness.
+dnl arg[2] is default target endianness.
+AC_DEFUN([SIM_AC_OPTION_ENDIAN],
+[
+wire_endian="[$1]"
+default_endian="[$2]"
+AC_ARG_ENABLE(sim-endian,
+[  --enable-sim-endian=endian          Specify target byte endian orientation.],
+[case "${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;;
+  *)    AC_MSG_ERROR("Unknown value $enableval for --enable-sim-endian"); sim_endian="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
+  echo "Setting endian flags = $sim_endian" 6>&1
+fi],
+[if test x"$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=${wire_endian}"
+  else
+    sim_endian=
+  fi
+fi])dnl
+])
+AC_SUBST(sim_endian)
+
+
+dnl --enable-sim-hostendian is for users of the simulator when
+dnl they find that AC_C_BIGENDIAN does not function correctly
+dnl (for instance in a canadian cross)
+AC_DEFUN([SIM_AC_OPTION_HOSTENDIAN],
+[
+AC_ARG_ENABLE(sim-hostendian,
+[  --enable-sim-hostendian=end         Specify host byte endian orientation.],
+[case "${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";;
+  *)    AC_MSG_ERROR("Unknown value $enableval for --enable-sim-hostendian"); sim_hostendian="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_hostendian" != x""; then
+  echo "Setting hostendian flags = $sim_hostendian" 6>&1
+fi],[
+if test "x$cross_compiling" = "xno"; then
+  AC_C_BIGENDIAN
+  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])dnl
+])
+AC_SUBST(sim_hostendian)
+
+
+dnl --enable-sim-float is for developers of the simulator
+dnl It specifies the presence of hardware floating point
+dnl And optionally the bitsize of the floating point register.
+dnl arg[1] specifies the presence (or absence) of floating point hardware
+dnl arg[2] specifies the number of bits in a floating point register
+AC_DEFUN([SIM_AC_OPTION_FLOAT],
+[
+default_sim_float="[$1]"
+default_sim_float_bitsize="[$2]"
+AC_ARG_ENABLE(sim-float,
+[  --enable-sim-float                  Specify that the target processor has floating point hardware.],
+[case "${enableval}" in
+  yes | hard)  sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT";;
+  no | soft)   sim_float="-DWITH_FLOATING_POINT=SOFT_FLOATING_POINT";;
+  32)           sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=32";;
+  64)           sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=64";;
+  *)           AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-float"); sim_float="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_float" != x""; then
+  echo "Setting float flags = $sim_float" 6>&1
+fi],[
+sim_float=
+if test x"${default_sim_float}" != x""; then
+  sim_float="-DWITH_FLOATING_POINT=${default_sim_float}"
+fi
+if test x"${default_sim_float_bitsize}" != x""; then
+  sim_float="$sim_float -DWITH_TARGET_FLOATING_POINT_BITSIZE=${default_sim_float_bitsize}"
+fi
+])dnl
+])
+AC_SUBST(sim_float)
 
-Makefile: Makefile.in config.status
-       CONFIG_HEADERS= \$(SHELL) ./config.status
 
-config.status: configure
-       \$(SHELL) ./config.status --recheck
+dnl The argument is the default cache size if none is specified.
+AC_DEFUN([SIM_AC_OPTION_SCACHE],
+[
+default_sim_scache="ifelse([$1],,0,[$1])"
+AC_ARG_ENABLE(sim-scache,
+[  --enable-sim-scache=size            Specify simulator execution cache size.],
+[case "${enableval}" in
+  yes) sim_scache="-DWITH_SCACHE=${default_sim_scache}";;
+  no)  sim_scache="-DWITH_SCACHE=0" ;;
+  [[0-9]]*) sim_scache="-DWITH_SCACHE=${enableval}";;
+  *)   AC_MSG_ERROR("Bad value $enableval passed to --enable-sim-scache");
+       sim_scache="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_scache" != x""; then
+  echo "Setting scache size = $sim_scache" 6>&1
+fi],[sim_scache="-DWITH_SCACHE=${default_sim_scache}"])
+])
+AC_SUBST(sim_scache)
 
-config.h: stamp-h ; @true
-stamp-h: config.in config.status
-       CONFIG_FILES= CONFIG_HEADERS=config.h:config.in \$(SHELL) ./config.status
 
-# We can't add dependencies to configure because it causes too much trouble
-# to end users if configure's timestamp is out of sync.
-.PHONY: run-autoconf
-run-autoconf:
-       cd \$(srcdir) && autoconf -l ../common
-EOF
+dnl The argument is the default model if none is specified.
+AC_DEFUN([SIM_AC_OPTION_DEFAULT_MODEL],
+[
+default_sim_default_model="ifelse([$1],,0,[$1])"
+AC_ARG_ENABLE(sim-default-model,
+[  --enable-sim-default-model=model    Specify default model to simulate.],
+[case "${enableval}" in
+  yes|no) AC_MSG_ERROR("Missing argument to --enable-sim-default-model");;
+  *)   sim_default_model="-DWITH_DEFAULT_MODEL='\"${enableval}\"'";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_default_model" != x""; then
+  echo "Setting default model = $sim_default_model" 6>&1
+fi],[sim_default_model="-DWITH_DEFAULT_MODEL='\"${default_sim_default_model}\"'"])
+])
+AC_SUBST(sim_default_model)
+
+
+dnl --enable-sim-hardware is for users of the simulator
+dnl arg[1] Enable sim-hw by default? ("yes" or "no")
+dnl arg[2] is a space separated list of devices that override the defaults
+dnl arg[3] is a space separated list of extra target specific devices.
+AC_DEFUN([SIM_AC_OPTION_HARDWARE],
+[
+if test x"[$1]" = x"yes"; then
+  sim_hw_p=yes
+else
+  sim_hw_p=no
+fi
+if test "[$2]"; then
+  hardware="core pal glue"
+else
+  hardware="core pal glue [$3]"
+fi
+sim_hw_cflags="-DWITH_HW=1"
+sim_hw="$hardware"
+sim_hw_objs="\$(SIM_COMMON_HW_OBJS) `echo $sim_hw | sed -e 's/\([[^ ]][[^ ]]*\)/dv-\1.o/g'`"
+AC_ARG_ENABLE(sim-hardware,
+[  --enable-sim-hardware=LIST          Specify the hardware to be included in the build.],
+[
+case "${enableval}" in
+  yes) sim_hw_p=yes;;
+  no)  sim_hw_p=no;;
+  ,*)   sim_hw_p=yes; hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
+  *,)   sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
+  *)   sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
+esac
+if test "$sim_hw_p" != yes; then
+  sim_hw_objs=
+  sim_hw_cflags="-DWITH_HW=0"
+  sim_hw=
+else
+  sim_hw_cflags="-DWITH_HW=1"
+  # remove duplicates
+  sim_hw=""
+  sim_hw_objs="\$(SIM_COMMON_HW_OBJS)"
+  for i in $hardware ; do
+    case " $sim_hw " in
+      *" $i "*) ;;
+      *) sim_hw="$sim_hw $i" ; sim_hw_objs="$sim_hw_objs dv-$i.o";;
+    esac
+  done
+fi
+if test x"$silent" != x"yes" && test "$sim_hw_p" = "yes"; then
+  echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
+fi],[
+if test "$sim_hw_p" != yes; then
+  sim_hw_objs=
+  sim_hw_cflags="-DWITH_HW=0"
+  sim_hw=
+fi
+if test x"$silent" != x"yes"; then
+  echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
+fi])dnl
+])
+AC_SUBST(sim_hw_cflags)
+AC_SUBST(sim_hw_objs)
+AC_SUBST(sim_hw)
+
+
+dnl --enable-sim-inline is for users that wish to ramp up the simulator's
+dnl performance by inlining functions.
+dnl Guarantee that unconfigured simulators do not do any inlining
+sim_inline="-DDEFAULT_INLINE=0"
+AC_DEFUN([SIM_AC_OPTION_INLINE],
+[
+default_sim_inline="ifelse([$1],,,-DDEFAULT_INLINE=[$1])"
+AC_ARG_ENABLE(sim-inline,
+[  --enable-sim-inline=inlines         Specify which functions should be inlined.],
+[sim_inline=""
+case "$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 = $sim_inline" 6>&1
+fi],[
+if test "x$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])dnl
+])
+AC_SUBST(sim_inline)
+
 
-dnl end of COMMON_MAKEFILE_FRAG
+AC_DEFUN([SIM_AC_OPTION_PACKAGES],
+[
+AC_ARG_ENABLE(sim-packages,
+[  --enable-sim-packages=list          Specify the packages to be included in the build.],
+[packages=disklabel
+case "${enableval}" in
+  yes) ;;
+  no)  AC_MSG_ERROR("List of packages must be specified for --enable-sim-packages"); packages="";;
+  ,*)   packages="${packages}${enableval}";;
+  *,)   packages="${enableval}${packages}";;
+  *)   packages="${enableval}"'';;
+esac
+sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
+sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
+if test x"$silent" != x"yes" && test x"$packages" != x""; then
+  echo "Setting packages to $sim_pk_src, $sim_pk_obj"
+fi],[packages=disklabel
+sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
+sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
+if test x"$silent" != x"yes"; then
+  echo "Setting packages to $sim_pk_src, $sim_pk_obj"
+fi])dnl
+])
+AC_SUBST(sim_packages)
+
+
+AC_DEFUN([SIM_AC_OPTION_REGPARM],
+[
+AC_ARG_ENABLE(sim-regparm,
+[  --enable-sim-regparm=nr-parm                Pass parameters in registers instead of on the stack - x86/GCC specific.],
+[case "${enableval}" in
+  0*|1*|2*|3*|4*|5*|6*|7*|8*|9*) sim_regparm="-DWITH_REGPARM=${enableval}";;
+  no)                            sim_regparm="" ;;
+  yes)                           sim_regparm="-DWITH_REGPARM=3";;
+  *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-regparm"); sim_regparm="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_regparm" != x""; then
+  echo "Setting regparm flags = $sim_regparm" 6>&1
+fi],[sim_regparm=""])dnl
+])
+AC_SUBST(sim_regparm)
 
-AC_SUBST_FILE(COMMON_MAKEFILE_FRAG)
 
-AC_LINK_FILES($sim_link_files, $sim_link_links)
- AC_OUTPUT(Makefile,[
- case "x$CONFIG_HEADERS" in xconfig.h:config.in) echo > stamp-h ;; esac
- ])
+AC_DEFUN([SIM_AC_OPTION_RESERVED_BITS],
+[
+default_sim_reserved_bits="ifelse([$1],,1,[$1])"
+AC_ARG_ENABLE(sim-reserved-bits,
+[  --enable-sim-reserved-bits          Specify whether to check reserved bits in instruction.],
+[case "${enableval}" in
+  yes) sim_reserved_bits="-DWITH_RESERVED_BITS=1";;
+  no)  sim_reserved_bits="-DWITH_RESERVED_BITS=0";;
+  *)   AC_MSG_ERROR("--enable-sim-reserved-bits does not take a value"); sim_reserved_bits="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_reserved_bits" != x""; then
+  echo "Setting reserved flags = $sim_reserved_bits" 6>&1
+fi],[sim_reserved_bits="-DWITH_RESERVED_BITS=${default_sim_reserved_bits}"])dnl
+])
+AC_SUBST(sim_reserved_bits)
 
-rm $COMMON_MAKEFILE_FRAG
 
-])dnl End of SIM_AC_OUTPUT
+AC_DEFUN([SIM_AC_OPTION_SMP],
+[
+default_sim_smp="ifelse([$1],,5,[$1])"
+AC_ARG_ENABLE(sim-smp,
+[  --enable-sim-smp=n                  Specify number of processors to configure for (default ${default_sim_smp}).],
+[case "${enableval}" in
+  yes) sim_smp="-DWITH_SMP=5" ; sim_igen_smp="-N 5";;
+  no)  sim_smp="-DWITH_SMP=0" ; sim_igen_smp="-N 0";;
+  *)   sim_smp="-DWITH_SMP=$enableval" ; sim_igen_smp="-N $enableval";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_smp" != x""; then
+  echo "Setting smp flags = $sim_smp" 6>&1
+fi],[sim_smp="-DWITH_SMP=${default_sim_smp}" ; sim_igen_smp="-N ${default_sim_smp}"
+if test x"$silent" != x"yes"; then
+  echo "Setting smp flags = $sim_smp" 6>&1
+fi])dnl
+])
+AC_SUBST(sim_smp)
+
+
+AC_DEFUN([SIM_AC_OPTION_STDCALL],
+[
+AC_ARG_ENABLE(sim-stdcall,
+[  --enable-sim-stdcall=type           Use an alternative function call/return mechanism - x86/GCC specific.],
+[case "${enableval}" in
+  no)          sim_stdcall="" ;;
+  std*)                sim_stdcall="-DWITH_STDCALL=1";;
+  yes)         sim_stdcall="-DWITH_STDCALL=1";;
+  *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-stdcall"); sim_stdcall="";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_stdcall" != x""; then
+  echo "Setting function call flags = $sim_stdcall" 6>&1
+fi],[sim_stdcall=""])dnl
+])
+AC_SUBST(sim_stdcall)
+
+
+AC_DEFUN([SIM_AC_OPTION_XOR_ENDIAN],
+[
+default_sim_xor_endian="ifelse([$1],,8,[$1])"
+AC_ARG_ENABLE(sim-xor-endian,
+[  --enable-sim-xor-endian=n           Specify number bytes involved in XOR bi-endian mode (default ${default_sim_xor_endian}).],
+[case "${enableval}" in
+  yes) sim_xor_endian="-DWITH_XOR_ENDIAN=8";;
+  no)  sim_xor_endian="-DWITH_XOR_ENDIAN=0";;
+  *)   sim_xor_endian="-DWITH_XOR_ENDIAN=$enableval";;
+esac
+if test x"$silent" != x"yes" && test x"$sim_xor_endian" != x""; then
+  echo "Setting xor-endian flag = $sim_xor_endian" 6>&1
+fi],[sim_xor_endian="-DWITH_XOR_ENDIAN=${default_sim_xor_endian}"])dnl
+])
+AC_SUBST(sim_xor_endian)
+
+
+dnl --enable-build-warnings is for developers of the simulator.
+dnl it enables extra GCC specific warnings.
+AC_DEFUN([SIM_AC_OPTION_WARNINGS],
+[
+# NOTE: Don't add -Wall or -Wunused, they both include
+# -Wunused-parameter which reports bogus warnings.
+# NOTE: If you add to this list, remember to update
+# gdb/doc/gdbint.texinfo.
+build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs \
+-Wformat -Wparentheses -Wpointer-arith"
+# GCC supports -Wuninitialized only with -O or -On, n != 0.
+if test x${CFLAGS+set} = xset; then
+  case "${CFLAGS}" in
+    *"-O0"* ) ;;
+    *"-O"* )
+      build_warnings="${build_warnings} -Wuninitialized"
+    ;;
+  esac
+else
+  build_warnings="${build_warnings} -Wuninitialized"
+fi
+# Up for debate: -Wswitch -Wcomment -trigraphs -Wtrigraphs
+# -Wunused-function -Wunused-label -Wunused-variable -Wunused-value
+# -Wchar-subscripts -Wtraditional -Wshadow -Wcast-qual
+# -Wcast-align -Wwrite-strings -Wconversion -Wstrict-prototypes
+# -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls
+# -Woverloaded-virtual -Winline -Werror"
+AC_ARG_ENABLE(build-warnings,
+[  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
+[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 = $build_warnings" 6>&1
+fi])dnl
+AC_ARG_ENABLE(sim-build-warnings,
+[  --enable-gdb-build-warnings Enable SIM specific build-time compiler warnings if gcc is used],
+[case "${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 = $build_warnings" 6>&1
+fi])dnl
+WARN_CFLAGS=""
+WERROR_CFLAGS=""
+if test "x${build_warnings}" != x -a "x$GCC" = xyes
+then
+    AC_MSG_CHECKING(compiler warning flags)
+    # 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 $w"
+           AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
+           CFLAGS="$saved_CFLAGS"
+       esac
+    done
+    AC_MSG_RESULT(${WARN_CFLAGS}${WERROR_CFLAGS})
+fi
+])
+AC_SUBST(WARN_CFLAGS)
+AC_SUBST(WERROR_CFLAGS)
+
+
+dnl Generate the Makefile in a target specific directory.
+dnl Substitutions aren't performed on the file in AC_SUBST_FILE,
+dnl so this is a cover macro to tuck the details away of how we cope.
+dnl We cope by having autoconf generate two files and then merge them into
+dnl one afterwards.  The two pieces of the common fragment are inserted into
+dnl the target's fragment at the appropriate points.
+
+AC_DEFUN([SIM_AC_OUTPUT],
+[
+AC_LINK_FILES($sim_link_files, $sim_link_links)
+dnl Make @cgen_breaks@ non-null only if the sim uses CGEN.
+cgen_breaks=""
+if grep CGEN_MAINT $srcdir/Makefile.in >/dev/null; then
+cgen_breaks="break cgen_rtx_error";
+fi
+AC_SUBST(cgen_breaks)
+AC_CONFIG_FILES(Makefile.sim:Makefile.in)
+AC_CONFIG_FILES(Make-common.sim:../common/Make-common.in)
+AC_CONFIG_FILES(.gdbinit:../common/gdbinit.in)
+AC_CONFIG_COMMANDS([Makefile],
+[echo "Merging Makefile.sim+Make-common.sim into Makefile ..."
+ rm -f Makesim1.tmp Makesim2.tmp Makefile
+ sed -n -e '/^## COMMON_PRE_/,/^## End COMMON_PRE_/ p' <Make-common.sim >Makesim1.tmp
+ sed -n -e '/^## COMMON_POST_/,/^## End COMMON_POST_/ p' <Make-common.sim >Makesim2.tmp
+ sed -e '/^## COMMON_PRE_/ r Makesim1.tmp' \
+       -e '/^## COMMON_POST_/ r Makesim2.tmp' \
+       <Makefile.sim >Makefile
+ rm -f Makefile.sim Make-common.sim Makesim1.tmp Makesim2.tmp
+])
+AC_CONFIG_COMMANDS([stamp-h], [echo > stamp-h])
+AC_OUTPUT
+])
+
+sinclude(../../config/gettext-sister.m4)
+sinclude(../../config/acx.m4)
+
+dnl --enable-cgen-maint support
+AC_DEFUN([SIM_AC_OPTION_CGEN_MAINT],
+[
+cgen_maint=no
+dnl Default is to use one in build tree.
+cgen=guile
+cgendir='$(srcdir)/../../cgen'
+dnl Having --enable-maintainer-mode take arguments is another way to go.
+dnl ??? One can argue --with is more appropriate if one wants to specify
+dnl a directory name, but what we're doing here is an enable/disable kind
+dnl of thing and specifying both --enable and --with is klunky.
+dnl If you reeely want this to be --with, go ahead and change it.
+AC_ARG_ENABLE(cgen-maint,
+[  --enable-cgen-maint[=DIR]    build cgen generated files],
+[case "${enableval}" in
+  yes) cgen_maint=yes ;;
+  no)  cgen_maint=no ;;
+  *)
+       # argument is cgen install directory (not implemented yet).
+       # Having a `share' directory might be more appropriate for the .scm,
+       # .cpu, etc. files.
+       cgendir=${cgen_maint}/lib/cgen
+       cgen=guile
+       ;;
+esac])dnl
+dnl AM_CONDITIONAL(CGEN_MAINT, test x${cgen_maint} != xno)
+if test x${cgen_maint} != xno ; then
+  CGEN_MAINT=''
+else
+  CGEN_MAINT='#'
+fi
+AC_SUBST(CGEN_MAINT)
+AC_SUBST(cgendir)
+AC_SUBST(cgen)
+])
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