sim/common/acinclude.m4

   1 # This file contains common code used by all simulators.
   2 #
   3 # SIM_AC_COMMON invokes AC macros used by all simulators and by the common
   4 # directory.  It is intended to be invoked before any target specific stuff.
   5 # SIM_AC_OUTPUT is a cover function to AC_OUTPUT to generate the Makefile.
   6 # It is intended to be invoked last.
   7 #
   8 # The simulator's configure.in should look like:
   9 #
  10 # dnl Process this file with autoconf to produce a configure script.
  11 # AC_PREREQ(2.64)dnl
  12 # AC_INIT(Makefile.in)
  13 # sinclude(../common/aclocal.m4)
  14 #
  15 # SIM_AC_COMMON
  16 #
  17 # ... target specific stuff ...
  18 #
  19 # SIM_AC_OUTPUT
  20
  21 # Include global overrides and fixes for Autoconf.
  22 m4_include(../../config/override.m4)
  23 sinclude([../../config/zlib.m4])
  24
  25 AC_DEFUN([SIM_AC_COMMON],
  26 [
  27 AC_REQUIRE([AC_PROG_CC])
  28 # autoconf.info says this should be called right after AC_INIT.
  29 AC_CONFIG_HEADER(ifelse([$1],,config.h,[$1]):config.in)
  30 AC_CANONICAL_SYSTEM
  31 AC_ARG_PROGRAM
  32 AC_PROG_INSTALL
  33
  34 # Put a plausible default for CC_FOR_BUILD in Makefile.
  35 if test "x$cross_compiling" = "xno"; then
  36   CC_FOR_BUILD='$(CC)'
  37 else
  38   CC_FOR_BUILD=gcc
  39 fi
  40 AC_SUBST(CC_FOR_BUILD)
  41
  42 AC_SUBST(CFLAGS)
  43 AC_SUBST(HDEFINES)
  44 AR=${AR-ar}
  45 AC_SUBST(AR)
  46 AC_PROG_RANLIB
  47
  48 dnl We don't use gettext, but bfd does.  So we do the appropriate checks
  49 dnl to see if there are intl libraries we should link against.
  50 ALL_LINGUAS=
  51 ZW_GNU_GETTEXT_SISTER_DIR(../../intl)
  52
  53 # Check for common headers.
  54 # FIXME: Seems to me this can cause problems for i386-windows hosts.
  55 # At one point there were hardcoded AC_DEFINE's if ${host} = i386-*-windows*.
  56 AC_CHECK_HEADERS(stdlib.h string.h strings.h unistd.h time.h)
  57 AC_CHECK_HEADERS(sys/time.h sys/resource.h)
  58 AC_CHECK_HEADERS(fcntl.h fpu_control.h)
  59 AC_CHECK_HEADERS(dlfcn.h errno.h sys/stat.h)
  60 AC_CHECK_FUNCS(getrusage time sigaction __setfpucw)
  61
  62 # Check for socket libraries
  63 AC_CHECK_LIB(socket, bind)
  64 AC_CHECK_LIB(nsl, gethostbyname)
  65
  66 # BFD conditionally uses zlib, so we must link it in if libbfd does, by
  67 # using the same condition.
  68 AM_ZLIB
  69
  70 . ${srcdir}/../../bfd/configure.host
  71
  72 dnl Standard (and optional) simulator options.
  73 dnl Eventually all simulators will support these.
  74 dnl Do not add any here that cannot be supported by all simulators.
  75 dnl Do not add similar but different options to a particular simulator,
  76 dnl all shall eventually behave the same way.
  77
  78
  79 dnl We don't use automake, but we still want to support
  80 dnl --enable-maintainer-mode.
  81 USE_MAINTAINER_MODE=no
  82 AC_ARG_ENABLE(maintainer-mode,
  83 [  --enable-maintainer-mode             Enable developer functionality.],
  84 [case "${enableval}" in
  85   yes)  MAINT="" USE_MAINTAINER_MODE=yes ;;
  86   no)   MAINT="#" ;;
  87   *)    AC_MSG_ERROR("--enable-maintainer-mode does not take a value"); MAINT="#" ;;
  88 esac
  89 if test x"$silent" != x"yes" && test x"$MAINT" = x""; then
  90   echo "Setting maintainer mode" 6>&1
  91 fi],[MAINT="#"])dnl
  92 AC_SUBST(MAINT)
  93
  94
  95 dnl This is a generic option to enable special byte swapping
  96 dnl insns on *any* cpu.
  97 AC_ARG_ENABLE(sim-bswap,
  98 [  --enable-sim-bswap                   Use Host specific BSWAP instruction.],
  99 [case "${enableval}" in
 100   yes)  sim_bswap="-DWITH_BSWAP=1 -DUSE_BSWAP=1";;
 101   no)   sim_bswap="-DWITH_BSWAP=0";;
 102   *)    AC_MSG_ERROR("--enable-sim-bswap does not take a value"); sim_bswap="";;
 103 esac
 104 if test x"$silent" != x"yes" && test x"$sim_bswap" != x""; then
 105   echo "Setting bswap flags = $sim_bswap" 6>&1
 106 fi],[sim_bswap=""])dnl
 107 AC_SUBST(sim_bswap)
 108
 109
 110 AC_ARG_ENABLE(sim-cflags,
 111 [  --enable-sim-cflags=opts             Extra CFLAGS for use in building simulator],
 112 [case "${enableval}" in
 113   yes)   sim_cflags="-O2 -fomit-frame-pointer";;
 114   trace) AC_MSG_ERROR("Please use --enable-sim-debug instead."); sim_cflags="";;
 115   no)    sim_cflags="";;
 116   *)     sim_cflags=`echo "${enableval}" | sed -e "s/,/ /g"`;;
 117 esac
 118 if test x"$silent" != x"yes" && test x"$sim_cflags" != x""; then
 119   echo "Setting sim cflags = $sim_cflags" 6>&1
 120 fi],[sim_cflags=""])dnl
 121 AC_SUBST(sim_cflags)
 122
 123
 124 dnl --enable-sim-debug is for developers of the simulator
 125 dnl the allowable values are work-in-progress
 126 AC_ARG_ENABLE(sim-debug,
 127 [  --enable-sim-debug=opts              Enable debugging flags],
 128 [case "${enableval}" in
 129   yes) sim_debug="-DDEBUG=7 -DWITH_DEBUG=7";;
 130   no)  sim_debug="-DDEBUG=0 -DWITH_DEBUG=0";;
 131   *)   sim_debug="-DDEBUG='(${enableval})' -DWITH_DEBUG='(${enableval})'";;
 132 esac
 133 if test x"$silent" != x"yes" && test x"$sim_debug" != x""; then
 134   echo "Setting sim debug = $sim_debug" 6>&1
 135 fi],[sim_debug=""])dnl
 136 AC_SUBST(sim_debug)
 137
 138
 139 dnl --enable-sim-stdio is for users of the simulator
 140 dnl It determines if IO from the program is routed through STDIO (buffered)
 141 AC_ARG_ENABLE(sim-stdio,
 142 [  --enable-sim-stdio                   Specify whether to use stdio for console input/output.],
 143 [case "${enableval}" in
 144   yes)  sim_stdio="-DWITH_STDIO=DO_USE_STDIO";;
 145   no)   sim_stdio="-DWITH_STDIO=DONT_USE_STDIO";;
 146   *)    AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-stdio"); sim_stdio="";;
 147 esac
 148 if test x"$silent" != x"yes" && test x"$sim_stdio" != x""; then
 149   echo "Setting stdio flags = $sim_stdio" 6>&1
 150 fi],[sim_stdio=""])dnl
 151 AC_SUBST(sim_stdio)
 152
 153
 154 dnl --enable-sim-trace is for users of the simulator
 155 dnl The argument is either a bitmask of things to enable [exactly what is
 156 dnl up to the simulator], or is a comma separated list of names of tracing
 157 dnl elements to enable.  The latter is only supported on simulators that
 158 dnl use WITH_TRACE.
 159 AC_ARG_ENABLE(sim-trace,
 160 [  --enable-sim-trace=opts              Enable tracing flags],
 161 [case "${enableval}" in
 162   yes)  sim_trace="-DTRACE=1 -DWITH_TRACE=-1";;
 163   no)   sim_trace="-DTRACE=0 -DWITH_TRACE=0";;
 164   [[-0-9]]*)
 165         sim_trace="-DTRACE='(${enableval})' -DWITH_TRACE='(${enableval})'";;
 166   [[a-z]]*)
 167         sim_trace=""
 168         for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
 169           if test x"$sim_trace" = x; then
 170             sim_trace="-DWITH_TRACE='(TRACE_$x"
 171           else
 172             sim_trace="${sim_trace}|TRACE_$x"
 173           fi
 174         done
 175         sim_trace="$sim_trace)'" ;;
 176 esac
 177 if test x"$silent" != x"yes" && test x"$sim_trace" != x""; then
 178   echo "Setting sim trace = $sim_trace" 6>&1
 179 fi],[sim_trace=""])dnl
 180 AC_SUBST(sim_trace)
 181
 182
 183 dnl --enable-sim-profile
 184 dnl The argument is either a bitmask of things to enable [exactly what is
 185 dnl up to the simulator], or is a comma separated list of names of profiling
 186 dnl elements to enable.  The latter is only supported on simulators that
 187 dnl use WITH_PROFILE.
 188 AC_ARG_ENABLE(sim-profile,
 189 [  --enable-sim-profile=opts            Enable profiling flags],
 190 [case "${enableval}" in
 191   yes)  sim_profile="-DPROFILE=1 -DWITH_PROFILE=-1";;
 192   no)   sim_profile="-DPROFILE=0 -DWITH_PROFILE=0";;
 193   [[-0-9]]*)
 194         sim_profile="-DPROFILE='(${enableval})' -DWITH_PROFILE='(${enableval})'";;
 195   [[a-z]]*)
 196         sim_profile=""
 197         for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
 198           if test x"$sim_profile" = x; then
 199             sim_profile="-DWITH_PROFILE='(PROFILE_$x"
 200           else
 201             sim_profile="${sim_profile}|PROFILE_$x"
 202           fi
 203         done
 204         sim_profile="$sim_profile)'" ;;
 205 esac
 206 if test x"$silent" != x"yes" && test x"$sim_profile" != x""; then
 207   echo "Setting sim profile = $sim_profile" 6>&1
 208 fi],[sim_profile="-DPROFILE=1 -DWITH_PROFILE=-1"])dnl
 209 AC_SUBST(sim_profile)
 210
 211 ACX_PKGVERSION([GDB])
 212 ACX_BUGURL([http://www.gnu.org/software/gdb/bugs/])
 213 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"], [Additional package description])
 214 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"], [Bug reporting address])
 215
 216 dnl Types used by common code
 217 AC_TYPE_SIGNAL
 218
 219 dnl Detect exe extension
 220 AC_EXEEXT
 221
 222 dnl These are available to append to as desired.
 223 sim_link_files=
 224 sim_link_links=
 225
 226 dnl Create tconfig.h either from simulator's tconfig.in or default one
 227 dnl in common.
 228 sim_link_links=tconfig.h
 229 if test -f ${srcdir}/tconfig.in
 230 then
 231   sim_link_files=tconfig.in
 232 else
 233   sim_link_files=../common/tconfig.in
 234 fi
 235
 236 # targ-vals.def points to the libc macro description file.
 237 case "${target}" in
 238 *-*-*) TARG_VALS_DEF=../common/nltvals.def ;;
 239 esac
 240 sim_link_files="${sim_link_files} ${TARG_VALS_DEF}"
 241 sim_link_links="${sim_link_links} targ-vals.def"
 242
 243 ]) dnl End of SIM_AC_COMMON
 244
 245
 246 dnl Additional SIM options that can (optionally) be configured
 247 dnl For optional simulator options, a macro SIM_AC_OPTION_* is defined.
 248 dnl Simulators that wish to use the relevant option specify the macro
 249 dnl in the simulator specific configure.in file between the SIM_AC_COMMON
 250 dnl and SIM_AC_OUTPUT lines.
 251
 252
 253 dnl Specify the running environment.
 254 dnl If the simulator invokes this in its configure.in then without this option
 255 dnl the default is the user environment and all are runtime selectable.
 256 dnl If the simulator doesn't invoke this, only the user environment is
 257 dnl supported.
 258 dnl ??? Until there is demonstrable value in doing something more complicated,
 259 dnl let's not.
 260 AC_DEFUN([SIM_AC_OPTION_ENVIRONMENT],
 261 [
 262 AC_ARG_ENABLE(sim-environment,
 263 [  --enable-sim-environment=environment Specify mixed, user, virtual or operating environment.],
 264 [case "${enableval}" in
 265   all | ALL)             sim_environment="-DWITH_ENVIRONMENT=ALL_ENVIRONMENT";;
 266   user | USER)           sim_environment="-DWITH_ENVIRONMENT=USER_ENVIRONMENT";;
 267   virtual | VIRTUAL)     sim_environment="-DWITH_ENVIRONMENT=VIRTUAL_ENVIRONMENT";;
 268   operating | OPERATING) sim_environment="-DWITH_ENVIRONMENT=OPERATING_ENVIRONMENT";;
 269   *)   AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-environment");
 270        sim_environment="";;
 271 esac
 272 if test x"$silent" != x"yes" && test x"$sim_environment" != x""; then
 273   echo "Setting sim environment = $sim_environment" 6>&1
 274 fi],
 275 [sim_environment="-DWITH_ENVIRONMENT=ALL_ENVIRONMENT"])dnl
 276 ])
 277 AC_SUBST(sim_environment)
 278
 279
 280 dnl Specify the alignment restrictions of the target architecture.
 281 dnl Without this option all possible alignment restrictions are accommodated.
 282 dnl arg[1] is hardwired target alignment
 283 dnl arg[2] is default target alignment
 284 AC_DEFUN([SIM_AC_OPTION_ALIGNMENT],
 285 wire_alignment="[$1]"
 286 default_alignment="[$2]"
 287 [
 288 AC_ARG_ENABLE(sim-alignment,
 289 [  --enable-sim-alignment=align         Specify strict,  nonstrict or forced alignment of memory accesses.],
 290 [case "${enableval}" in
 291   strict | STRICT)       sim_alignment="-DWITH_ALIGNMENT=STRICT_ALIGNMENT";;
 292   nonstrict | NONSTRICT) sim_alignment="-DWITH_ALIGNMENT=NONSTRICT_ALIGNMENT";;
 293   forced | FORCED)       sim_alignment="-DWITH_ALIGNMENT=FORCED_ALIGNMENT";;
 294   yes) if test x"$wire_alignment" != x; then
 295          sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
 296        else
 297          if test x"$default_alignment" != x; then
 298            sim_alignment="-DWITH_ALIGNMENT=${default_alignment}"
 299          else
 300            echo "No hard-wired alignment for target $target" 1>&6
 301            sim_alignment="-DWITH_ALIGNMENT=0"
 302          fi
 303        fi;;
 304   no)  if test x"$default_alignment" != x; then
 305          sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
 306        else
 307          if test x"$wire_alignment" != x; then
 308            sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${wire_alignment}"
 309          else
 310            echo "No default alignment for target $target" 1>&6
 311            sim_alignment="-DWITH_DEFAULT_ALIGNMENT=0"
 312          fi
 313        fi;;
 314   *)   AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-alignment"); sim_alignment="";;
 315 esac
 316 if test x"$silent" != x"yes" && test x"$sim_alignment" != x""; then
 317   echo "Setting alignment flags = $sim_alignment" 6>&1
 318 fi],
 319 [if test x"$default_alignment" != x; then
 320   sim_alignment="-DWITH_DEFAULT_ALIGNMENT=${default_alignment}"
 321 else
 322   if test x"$wire_alignment" != x; then
 323     sim_alignment="-DWITH_ALIGNMENT=${wire_alignment}"
 324   else
 325     sim_alignment=
 326   fi
 327 fi])dnl
 328 ])dnl
 329 AC_SUBST(sim_alignment)
 330
 331
 332 dnl Conditionally compile in assertion statements.
 333 AC_DEFUN([SIM_AC_OPTION_ASSERT],
 334 [
 335 AC_ARG_ENABLE(sim-assert,
 336 [  --enable-sim-assert                  Specify whether to perform random assertions.],
 337 [case "${enableval}" in
 338   yes)  sim_assert="-DWITH_ASSERT=1";;
 339   no)   sim_assert="-DWITH_ASSERT=0";;
 340   *)    AC_MSG_ERROR("--enable-sim-assert does not take a value"); sim_assert="";;
 341 esac
 342 if test x"$silent" != x"yes" && test x"$sim_assert" != x""; then
 343   echo "Setting assert flags = $sim_assert" 6>&1
 344 fi],[sim_assert=""])dnl
 345 ])
 346 AC_SUBST(sim_assert)
 347
 348
 349
 350 dnl --enable-sim-bitsize is for developers of the simulator
 351 dnl It specifies the number of BITS in the target.
 352 dnl arg[1] is the number of bits in a word
 353 dnl arg[2] is the number assigned to the most significant bit
 354 dnl arg[3] is the number of bits in an address
 355 dnl arg[4] is the number of bits in an OpenFirmware cell.
 356 dnl FIXME: this information should be obtained from bfd/archure
 357 AC_DEFUN([SIM_AC_OPTION_BITSIZE],
 358 wire_word_bitsize="[$1]"
 359 wire_word_msb="[$2]"
 360 wire_address_bitsize="[$3]"
 361 wire_cell_bitsize="[$4]"
 362 [AC_ARG_ENABLE(sim-bitsize,
 363 [  --enable-sim-bitsize=N               Specify target bitsize (32 or 64).],
 364 [sim_bitsize=
 365 case "${enableval}" in
 366   64,63 | 64,63,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=63";;
 367   32,31 | 32,31,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31";;
 368   64,0 | 64,0,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0";;
 369   32,0 | 64,0,* ) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0";;
 370   32) if test x"$wire_word_msb" != x -a x"$wire_word_msb" != x0; then
 371         sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=31"
 372       else
 373         sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=32 -DWITH_TARGET_WORD_MSB=0"
 374       fi ;;
 375   64) if test x"$wire_word_msb" != x -a x"$wire_word_msb" != x0; then
 376         sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=63"
 377       else
 378         sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=0"
 379       fi ;;
 380   *)  AC_MSG_ERROR("--enable-sim-bitsize was given $enableval.  Expected 32 or 64") ;;
 381 esac
 382 # address bitsize
 383 tmp=`echo "${enableval}" | sed -e "s/^[[0-9]]*,*[[0-9]]*,*//"`
 384 case x"${tmp}" in
 385   x ) ;;
 386   x32 | x32,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_ADDRESS_BITSIZE=32" ;;
 387   x64 | x64,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_ADDRESS_BITSIZE=64" ;;
 388   * ) AC_MSG_ERROR("--enable-sim-bitsize was given address size $enableval.  Expected 32 or 64") ;;
 389 esac
 390 # cell bitsize
 391 tmp=`echo "${enableval}" | sed -e "s/^[[0-9]]*,*[[0-9*]]*,*[[0-9]]*,*//"`
 392 case x"${tmp}" in
 393   x ) ;;
 394   x32 | x32,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_CELL_BITSIZE=32" ;;
 395   x64 | x64,* ) sim_bitsize="${sim_bitsize} -DWITH_TARGET_CELL_BITSIZE=64" ;;
 396   * ) AC_MSG_ERROR("--enable-sim-bitsize was given cell size $enableval.  Expected 32 or 64") ;;
 397 esac
 398 if test x"$silent" != x"yes" && test x"$sim_bitsize" != x""; then
 399   echo "Setting bitsize flags = $sim_bitsize" 6>&1
 400 fi],
 401 [sim_bitsize=""
 402 if test x"$wire_word_bitsize" != x; then
 403   sim_bitsize="$sim_bitsize -DWITH_TARGET_WORD_BITSIZE=$wire_word_bitsize"
 404 fi
 405 if test x"$wire_word_msb" != x; then
 406   sim_bitsize="$sim_bitsize -DWITH_TARGET_WORD_MSB=$wire_word_msb"
 407 fi
 408 if test x"$wire_address_bitsize" != x; then
 409   sim_bitsize="$sim_bitsize -DWITH_TARGET_ADDRESS_BITSIZE=$wire_address_bitsize"
 410 fi
 411 if test x"$wire_cell_bitsize" != x; then
 412   sim_bitsize="$sim_bitsize -DWITH_TARGET_CELL_BITSIZE=$wire_cell_bitsize"
 413 fi])dnl
 414 ])
 415 AC_SUBST(sim_bitsize)
 416
 417
 418
 419 dnl --enable-sim-endian={yes,no,big,little} is for simulators
 420 dnl that support both big and little endian targets.
 421 dnl arg[1] is hardwired target endianness.
 422 dnl arg[2] is default target endianness.
 423 AC_DEFUN([SIM_AC_OPTION_ENDIAN],
 424 [
 425 wire_endian="[$1]"
 426 default_endian="[$2]"
 427 AC_ARG_ENABLE(sim-endian,
 428 [  --enable-sim-endian=endian           Specify target byte endian orientation.],
 429 [case "${enableval}" in
 430   b*|B*) sim_endian="-DWITH_TARGET_BYTE_ORDER=BIG_ENDIAN";;
 431   l*|L*) sim_endian="-DWITH_TARGET_BYTE_ORDER=LITTLE_ENDIAN";;
 432   yes)   if test x"$wire_endian" != x; then
 433            sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
 434          else
 435            if test x"$default_endian" != x; then
 436              sim_endian="-DWITH_TARGET_BYTE_ORDER=${default_endian}"
 437            else
 438              echo "No hard-wired endian for target $target" 1>&6
 439              sim_endian="-DWITH_TARGET_BYTE_ORDER=0"
 440            fi
 441          fi;;
 442   no)    if test x"$default_endian" != x; then
 443            sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
 444          else
 445            if test x"$wire_endian" != x; then
 446              sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${wire_endian}"
 447            else
 448              echo "No default endian for target $target" 1>&6
 449              sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=0"
 450            fi
 451          fi;;
 452   *)     AC_MSG_ERROR("Unknown value $enableval for --enable-sim-endian"); sim_endian="";;
 453 esac
 454 if test x"$silent" != x"yes" && test x"$sim_endian" != x""; then
 455   echo "Setting endian flags = $sim_endian" 6>&1
 456 fi],
 457 [if test x"$default_endian" != x; then
 458   sim_endian="-DWITH_DEFAULT_TARGET_BYTE_ORDER=${default_endian}"
 459 else
 460   if test x"$wire_endian" != x; then
 461     sim_endian="-DWITH_TARGET_BYTE_ORDER=${wire_endian}"
 462   else
 463     sim_endian=
 464   fi
 465 fi])dnl
 466 ])
 467 AC_SUBST(sim_endian)
 468
 469
 470 dnl --enable-sim-hostendian is for users of the simulator when
 471 dnl they find that AC_C_BIGENDIAN does not function correctly
 472 dnl (for instance in a canadian cross)
 473 AC_DEFUN([SIM_AC_OPTION_HOSTENDIAN],
 474 [
 475 AC_ARG_ENABLE(sim-hostendian,
 476 [  --enable-sim-hostendian=end          Specify host byte endian orientation.],
 477 [case "${enableval}" in
 478   no)    sim_hostendian="-DWITH_HOST_BYTE_ORDER=0";;
 479   b*|B*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN";;
 480   l*|L*) sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN";;
 481   *)     AC_MSG_ERROR("Unknown value $enableval for --enable-sim-hostendian"); sim_hostendian="";;
 482 esac
 483 if test x"$silent" != x"yes" && test x"$sim_hostendian" != x""; then
 484   echo "Setting hostendian flags = $sim_hostendian" 6>&1
 485 fi],[
 486 if test "x$cross_compiling" = "xno"; then
 487   AC_C_BIGENDIAN
 488   if test $ac_cv_c_bigendian = yes; then
 489     sim_hostendian="-DWITH_HOST_BYTE_ORDER=BIG_ENDIAN"
 490   else
 491     sim_hostendian="-DWITH_HOST_BYTE_ORDER=LITTLE_ENDIAN"
 492   fi
 493 else
 494   sim_hostendian="-DWITH_HOST_BYTE_ORDER=0"
 495 fi])dnl
 496 ])
 497 AC_SUBST(sim_hostendian)
 498
 499
 500 dnl --enable-sim-float is for developers of the simulator
 501 dnl It specifies the presence of hardware floating point
 502 dnl And optionally the bitsize of the floating point register.
 503 dnl arg[1] specifies the presence (or absence) of floating point hardware
 504 dnl arg[2] specifies the number of bits in a floating point register
 505 AC_DEFUN([SIM_AC_OPTION_FLOAT],
 506 [
 507 default_sim_float="[$1]"
 508 default_sim_float_bitsize="[$2]"
 509 AC_ARG_ENABLE(sim-float,
 510 [  --enable-sim-float                   Specify that the target processor has floating point hardware.],
 511 [case "${enableval}" in
 512   yes | hard)   sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT";;
 513   no | soft)    sim_float="-DWITH_FLOATING_POINT=SOFT_FLOATING_POINT";;
 514   32)           sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=32";;
 515   64)           sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=64";;
 516   *)            AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-float"); sim_float="";;
 517 esac
 518 if test x"$silent" != x"yes" && test x"$sim_float" != x""; then
 519   echo "Setting float flags = $sim_float" 6>&1
 520 fi],[
 521 sim_float=
 522 if test x"${default_sim_float}" != x""; then
 523   sim_float="-DWITH_FLOATING_POINT=${default_sim_float}"
 524 fi
 525 if test x"${default_sim_float_bitsize}" != x""; then
 526   sim_float="$sim_float -DWITH_TARGET_FLOATING_POINT_BITSIZE=${default_sim_float_bitsize}"
 527 fi
 528 ])dnl
 529 ])
 530 AC_SUBST(sim_float)
 531
 532
 533 dnl The argument is the default cache size if none is specified.
 534 AC_DEFUN([SIM_AC_OPTION_SCACHE],
 535 [
 536 default_sim_scache="ifelse([$1],,0,[$1])"
 537 AC_ARG_ENABLE(sim-scache,
 538 [  --enable-sim-scache=size             Specify simulator execution cache size.],
 539 [case "${enableval}" in
 540   yes)  sim_scache="-DWITH_SCACHE=${default_sim_scache}";;
 541   no)   sim_scache="-DWITH_SCACHE=0" ;;
 542   [[0-9]]*) sim_scache="-DWITH_SCACHE=${enableval}";;
 543   *)    AC_MSG_ERROR("Bad value $enableval passed to --enable-sim-scache");
 544         sim_scache="";;
 545 esac
 546 if test x"$silent" != x"yes" && test x"$sim_scache" != x""; then
 547   echo "Setting scache size = $sim_scache" 6>&1
 548 fi],[sim_scache="-DWITH_SCACHE=${default_sim_scache}"])
 549 ])
 550 AC_SUBST(sim_scache)
 551
 552
 553 dnl The argument is the default model if none is specified.
 554 AC_DEFUN([SIM_AC_OPTION_DEFAULT_MODEL],
 555 [
 556 default_sim_default_model="ifelse([$1],,0,[$1])"
 557 AC_ARG_ENABLE(sim-default-model,
 558 [  --enable-sim-default-model=model     Specify default model to simulate.],
 559 [case "${enableval}" in
 560   yes|no) AC_MSG_ERROR("Missing argument to --enable-sim-default-model");;
 561   *)    sim_default_model="-DWITH_DEFAULT_MODEL='\"${enableval}\"'";;
 562 esac
 563 if test x"$silent" != x"yes" && test x"$sim_default_model" != x""; then
 564   echo "Setting default model = $sim_default_model" 6>&1
 565 fi],[sim_default_model="-DWITH_DEFAULT_MODEL='\"${default_sim_default_model}\"'"])
 566 ])
 567 AC_SUBST(sim_default_model)
 568
 569
 570 dnl --enable-sim-hardware is for users of the simulator
 571 dnl arg[1] Enable sim-hw by default? ("yes" or "no")
 572 dnl arg[2] is a space separated list of devices that override the defaults
 573 dnl arg[3] is a space separated list of extra target specific devices.
 574 AC_DEFUN([SIM_AC_OPTION_HARDWARE],
 575 [
 576 if test x"[$1]" = x"yes"; then
 577   sim_hw_p=yes
 578 else
 579   sim_hw_p=no
 580 fi
 581 if test "[$2]"; then
 582   hardware="[$2]"
 583 else
 584   hardware="cfi core pal glue"
 585 fi
 586 hardware="$hardware [$3]"
 587 sim_hw_cflags="-DWITH_HW=1"
 588 sim_hw="$hardware"
 589 sim_hw_objs="\$(SIM_COMMON_HW_OBJS) `echo $sim_hw | sed -e 's/\([[^ ]][[^ ]]*\)/dv-\1.o/g'`"
 590 AC_ARG_ENABLE(sim-hardware,
 591 [  --enable-sim-hardware=LIST           Specify the hardware to be included in the build.],
 592 [
 593 case "${enableval}" in
 594   yes)  sim_hw_p=yes;;
 595   no)   sim_hw_p=no;;
 596   ,*)   sim_hw_p=yes; hardware="${hardware} `echo ${enableval} | sed -e 's/,/ /'`";;
 597   *,)   sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'` ${hardware}";;
 598   *)    sim_hw_p=yes; hardware="`echo ${enableval} | sed -e 's/,/ /'`"'';;
 599 esac
 600 if test "$sim_hw_p" != yes; then
 601   sim_hw_objs=
 602   sim_hw_cflags="-DWITH_HW=0"
 603   sim_hw=
 604 else
 605   sim_hw_cflags="-DWITH_HW=1"
 606   # remove duplicates
 607   sim_hw=""
 608   sim_hw_objs="\$(SIM_COMMON_HW_OBJS)"
 609   for i in $hardware ; do
 610     case " $sim_hw " in
 611       *" $i "*) ;;
 612       *) sim_hw="$sim_hw $i" ; sim_hw_objs="$sim_hw_objs dv-$i.o";;
 613     esac
 614   done
 615 fi
 616 if test x"$silent" != x"yes" && test "$sim_hw_p" = "yes"; then
 617   echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
 618 fi],[
 619 if test "$sim_hw_p" != yes; then
 620   sim_hw_objs=
 621   sim_hw_cflags="-DWITH_HW=0"
 622   sim_hw=
 623 fi
 624 if test x"$silent" != x"yes"; then
 625   echo "Setting hardware to $sim_hw_cflags, $sim_hw, $sim_hw_objs"
 626 fi])
 627 dnl Some devices require extra libraries.
 628 case " $hardware " in
 629   *" cfi "*) AC_CHECK_LIB(m, log2);;
 630 esac
 631 ])
 632 AC_SUBST(sim_hw_cflags)
 633 AC_SUBST(sim_hw_objs)
 634 AC_SUBST(sim_hw)
 635
 636
 637 dnl --enable-sim-inline is for users that wish to ramp up the simulator's
 638 dnl performance by inlining functions.
 639 dnl Guarantee that unconfigured simulators do not do any inlining
 640 sim_inline="-DDEFAULT_INLINE=0"
 641 AC_DEFUN([SIM_AC_OPTION_INLINE],
 642 [
 643 default_sim_inline="ifelse([$1],,,-DDEFAULT_INLINE=[$1])"
 644 AC_ARG_ENABLE(sim-inline,
 645 [  --enable-sim-inline=inlines          Specify which functions should be inlined.],
 646 [sim_inline=""
 647 case "$enableval" in
 648   no)           sim_inline="-DDEFAULT_INLINE=0";;
 649   0)            sim_inline="-DDEFAULT_INLINE=0";;
 650   yes | 2)      sim_inline="-DDEFAULT_INLINE=ALL_C_INLINE";;
 651   1)            sim_inline="-DDEFAULT_INLINE=INLINE_LOCALS";;
 652   *) for x in `echo "$enableval" | sed -e "s/,/ /g"`; do
 653        new_flag=""
 654        case "$x" in
 655          *_INLINE=*)    new_flag="-D$x";;
 656          *=*)           new_flag=`echo "$x" | sed -e "s/=/_INLINE=/" -e "s/^/-D/"`;;
 657          *_INLINE)      new_flag="-D$x=ALL_C_INLINE";;
 658          *)             new_flag="-D$x""_INLINE=ALL_C_INLINE";;
 659        esac
 660        if test x"$sim_inline" = x""; then
 661          sim_inline="$new_flag"
 662        else
 663          sim_inline="$sim_inline $new_flag"
 664        fi
 665      done;;
 666 esac
 667 if test x"$silent" != x"yes" && test x"$sim_inline" != x""; then
 668   echo "Setting inline flags = $sim_inline" 6>&1
 669 fi],[
 670 if test "x$cross_compiling" = "xno"; then
 671   if test x"$GCC" != "x" -a x"${default_sim_inline}" != "x" ; then
 672     sim_inline="${default_sim_inline}"
 673     if test x"$silent" != x"yes"; then
 674       echo "Setting inline flags = $sim_inline" 6>&1
 675     fi
 676   else
 677     sim_inline=""
 678   fi
 679 else
 680   sim_inline="-DDEFAULT_INLINE=0"
 681 fi])dnl
 682 ])
 683 AC_SUBST(sim_inline)
 684
 685
 686 AC_DEFUN([SIM_AC_OPTION_PACKAGES],
 687 [
 688 AC_ARG_ENABLE(sim-packages,
 689 [  --enable-sim-packages=list           Specify the packages to be included in the build.],
 690 [packages=disklabel
 691 case "${enableval}" in
 692   yes)  ;;
 693   no)   AC_MSG_ERROR("List of packages must be specified for --enable-sim-packages"); packages="";;
 694   ,*)   packages="${packages}${enableval}";;
 695   *,)   packages="${enableval}${packages}";;
 696   *)    packages="${enableval}"'';;
 697 esac
 698 sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
 699 sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
 700 if test x"$silent" != x"yes" && test x"$packages" != x""; then
 701   echo "Setting packages to $sim_pk_src, $sim_pk_obj"
 702 fi],[packages=disklabel
 703 sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
 704 sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
 705 if test x"$silent" != x"yes"; then
 706   echo "Setting packages to $sim_pk_src, $sim_pk_obj"
 707 fi])dnl
 708 ])
 709 AC_SUBST(sim_packages)
 710
 711
 712 AC_DEFUN([SIM_AC_OPTION_REGPARM],
 713 [
 714 AC_ARG_ENABLE(sim-regparm,
 715 [  --enable-sim-regparm=nr-parm         Pass parameters in registers instead of on the stack - x86/GCC specific.],
 716 [case "${enableval}" in
 717   0*|1*|2*|3*|4*|5*|6*|7*|8*|9*) sim_regparm="-DWITH_REGPARM=${enableval}";;
 718   no)                            sim_regparm="" ;;
 719   yes)                           sim_regparm="-DWITH_REGPARM=3";;
 720   *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-regparm"); sim_regparm="";;
 721 esac
 722 if test x"$silent" != x"yes" && test x"$sim_regparm" != x""; then
 723   echo "Setting regparm flags = $sim_regparm" 6>&1
 724 fi],[sim_regparm=""])dnl
 725 ])
 726 AC_SUBST(sim_regparm)
 727
 728
 729 AC_DEFUN([SIM_AC_OPTION_RESERVED_BITS],
 730 [
 731 default_sim_reserved_bits="ifelse([$1],,1,[$1])"
 732 AC_ARG_ENABLE(sim-reserved-bits,
 733 [  --enable-sim-reserved-bits           Specify whether to check reserved bits in instruction.],
 734 [case "${enableval}" in
 735   yes)  sim_reserved_bits="-DWITH_RESERVED_BITS=1";;
 736   no)   sim_reserved_bits="-DWITH_RESERVED_BITS=0";;
 737   *)    AC_MSG_ERROR("--enable-sim-reserved-bits does not take a value"); sim_reserved_bits="";;
 738 esac
 739 if test x"$silent" != x"yes" && test x"$sim_reserved_bits" != x""; then
 740   echo "Setting reserved flags = $sim_reserved_bits" 6>&1
 741 fi],[sim_reserved_bits="-DWITH_RESERVED_BITS=${default_sim_reserved_bits}"])dnl
 742 ])
 743 AC_SUBST(sim_reserved_bits)
 744
 745
 746 AC_DEFUN([SIM_AC_OPTION_SMP],
 747 [
 748 default_sim_smp="ifelse([$1],,5,[$1])"
 749 AC_ARG_ENABLE(sim-smp,
 750 [  --enable-sim-smp=n                   Specify number of processors to configure for (default ${default_sim_smp}).],
 751 [case "${enableval}" in
 752   yes)  sim_smp="-DWITH_SMP=5" ; sim_igen_smp="-N 5";;
 753   no)   sim_smp="-DWITH_SMP=0" ; sim_igen_smp="-N 0";;
 754   *)    sim_smp="-DWITH_SMP=$enableval" ; sim_igen_smp="-N $enableval";;
 755 esac
 756 if test x"$silent" != x"yes" && test x"$sim_smp" != x""; then
 757   echo "Setting smp flags = $sim_smp" 6>&1
 758 fi],[sim_smp="-DWITH_SMP=${default_sim_smp}" ; sim_igen_smp="-N ${default_sim_smp}"
 759 if test x"$silent" != x"yes"; then
 760   echo "Setting smp flags = $sim_smp" 6>&1
 761 fi])dnl
 762 ])
 763 AC_SUBST(sim_smp)
 764
 765
 766 AC_DEFUN([SIM_AC_OPTION_STDCALL],
 767 [
 768 AC_ARG_ENABLE(sim-stdcall,
 769 [  --enable-sim-stdcall=type            Use an alternative function call/return mechanism - x86/GCC specific.],
 770 [case "${enableval}" in
 771   no)           sim_stdcall="" ;;
 772   std*)         sim_stdcall="-DWITH_STDCALL=1";;
 773   yes)          sim_stdcall="-DWITH_STDCALL=1";;
 774   *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-stdcall"); sim_stdcall="";;
 775 esac
 776 if test x"$silent" != x"yes" && test x"$sim_stdcall" != x""; then
 777   echo "Setting function call flags = $sim_stdcall" 6>&1
 778 fi],[sim_stdcall=""])dnl
 779 ])
 780 AC_SUBST(sim_stdcall)
 781
 782
 783 AC_DEFUN([SIM_AC_OPTION_XOR_ENDIAN],
 784 [
 785 default_sim_xor_endian="ifelse([$1],,8,[$1])"
 786 AC_ARG_ENABLE(sim-xor-endian,
 787 [  --enable-sim-xor-endian=n            Specify number bytes involved in XOR bi-endian mode (default ${default_sim_xor_endian}).],
 788 [case "${enableval}" in
 789   yes)  sim_xor_endian="-DWITH_XOR_ENDIAN=8";;
 790   no)   sim_xor_endian="-DWITH_XOR_ENDIAN=0";;
 791   *)    sim_xor_endian="-DWITH_XOR_ENDIAN=$enableval";;
 792 esac
 793 if test x"$silent" != x"yes" && test x"$sim_xor_endian" != x""; then
 794   echo "Setting xor-endian flag = $sim_xor_endian" 6>&1
 795 fi],[sim_xor_endian="-DWITH_XOR_ENDIAN=${default_sim_xor_endian}"])dnl
 796 ])
 797 AC_SUBST(sim_xor_endian)
 798
 799
 800 dnl --enable-build-warnings is for developers of the simulator.
 801 dnl it enables extra GCC specific warnings.
 802 AC_DEFUN([SIM_AC_OPTION_WARNINGS],
 803 [
 804 # NOTE: Don't add -Wall or -Wunused, they both include
 805 # -Wunused-parameter which reports bogus warnings.
 806 # NOTE: If you add to this list, remember to update
 807 # gdb/doc/gdbint.texinfo.
 808 build_warnings="-Wimplicit -Wreturn-type -Wcomment -Wtrigraphs \
 809 -Wformat -Wparentheses -Wpointer-arith"
 810 # GCC supports -Wuninitialized only with -O or -On, n != 0.
 811 if test x${CFLAGS+set} = xset; then
 812   case "${CFLAGS}" in
 813     *"-O0"* ) ;;
 814     *"-O"* )
 815       build_warnings="${build_warnings} -Wuninitialized"
 816     ;;
 817   esac
 818 else
 819   build_warnings="${build_warnings} -Wuninitialized"
 820 fi
 821 # Up for debate: -Wswitch -Wcomment -trigraphs -Wtrigraphs
 822 # -Wunused-function -Wunused-label -Wunused-variable -Wunused-value
 823 # -Wchar-subscripts -Wtraditional -Wshadow -Wcast-qual
 824 # -Wcast-align -Wwrite-strings -Wconversion -Wstrict-prototypes
 825 # -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls
 826 # -Woverloaded-virtual -Winline -Werror"
 827 AC_ARG_ENABLE(build-warnings,
 828 [  --enable-build-warnings Enable build-time compiler warnings if gcc is used],
 829 [case "${enableval}" in
 830   yes)  ;;
 831   no)   build_warnings="-w";;
 832   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
 833         build_warnings="${build_warnings} ${t}";;
 834   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
 835         build_warnings="${t} ${build_warnings}";;
 836   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
 837 esac
 838 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
 839   echo "Setting compiler warning flags = $build_warnings" 6>&1
 840 fi])dnl
 841 AC_ARG_ENABLE(sim-build-warnings,
 842 [  --enable-gdb-build-warnings Enable SIM specific build-time compiler warnings if gcc is used],
 843 [case "${enableval}" in
 844   yes)  ;;
 845   no)   build_warnings="-w";;
 846   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
 847         build_warnings="${build_warnings} ${t}";;
 848   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
 849         build_warnings="${t} ${build_warnings}";;
 850   *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
 851 esac
 852 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
 853   echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
 854 fi])dnl
 855 WARN_CFLAGS=""
 856 WERROR_CFLAGS=""
 857 if test "x${build_warnings}" != x -a "x$GCC" = xyes
 858 then
 859     AC_MSG_CHECKING(compiler warning flags)
 860     # Separate out the -Werror flag as some files just cannot be
 861     # compiled with it enabled.
 862     for w in ${build_warnings}; do
 863         case $w in
 864         -Werr*) WERROR_CFLAGS=-Werror ;;
 865         *) # Check that GCC accepts it
 866             saved_CFLAGS="$CFLAGS"
 867             CFLAGS="$CFLAGS $w"
 868             AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
 869             CFLAGS="$saved_CFLAGS"
 870         esac
 871     done
 872     AC_MSG_RESULT(${WARN_CFLAGS}${WERROR_CFLAGS})
 873 fi
 874 ])
 875 AC_SUBST(WARN_CFLAGS)
 876 AC_SUBST(WERROR_CFLAGS)
 877
 878
 879 dnl Generate the Makefile in a target specific directory.
 880 dnl Substitutions aren't performed on the file in AC_SUBST_FILE,
 881 dnl so this is a cover macro to tuck the details away of how we cope.
 882 dnl We cope by having autoconf generate two files and then merge them into
 883 dnl one afterwards.  The two pieces of the common fragment are inserted into
 884 dnl the target's fragment at the appropriate points.
 885
 886 AC_DEFUN([SIM_AC_OUTPUT],
 887 [
 888 AC_LINK_FILES($sim_link_files, $sim_link_links)
 889 dnl Make @cgen_breaks@ non-null only if the sim uses CGEN.
 890 cgen_breaks=""
 891 if grep CGEN_MAINT $srcdir/Makefile.in >/dev/null; then
 892 cgen_breaks="break cgen_rtx_error";
 893 fi
 894 AC_SUBST(cgen_breaks)
 895 AC_CONFIG_FILES(Makefile.sim:Makefile.in)
 896 AC_CONFIG_FILES(Make-common.sim:../common/Make-common.in)
 897 AC_CONFIG_FILES(.gdbinit:../common/gdbinit.in)
 898 AC_CONFIG_COMMANDS([Makefile],
 899 [echo "Merging Makefile.sim+Make-common.sim into Makefile ..."
 900  rm -f Makesim1.tmp Makesim2.tmp Makefile
 901  sed -n -e '/^## COMMON_PRE_/,/^## End COMMON_PRE_/ p' <Make-common.sim >Makesim1.tmp
 902  sed -n -e '/^## COMMON_POST_/,/^## End COMMON_POST_/ p' <Make-common.sim >Makesim2.tmp
 903  sed -e '/^## COMMON_PRE_/ r Makesim1.tmp' \
 904         -e '/^## COMMON_POST_/ r Makesim2.tmp' \
 905         <Makefile.sim >Makefile
 906  rm -f Makefile.sim Make-common.sim Makesim1.tmp Makesim2.tmp
 907 ])
 908 AC_CONFIG_COMMANDS([stamp-h], [echo > stamp-h])
 909 AC_OUTPUT
 910 ])
 911
 912 sinclude(../../config/gettext-sister.m4)
 913 sinclude(../../config/acx.m4)
 914
 915 dnl --enable-cgen-maint support
 916 AC_DEFUN([SIM_AC_OPTION_CGEN_MAINT],
 917 [
 918 cgen_maint=no
 919 dnl Default is to use one in build tree.
 920 cgen=guile
 921 cgendir='$(srcdir)/../../cgen'
 922 dnl Having --enable-maintainer-mode take arguments is another way to go.
 923 dnl ??? One can argue --with is more appropriate if one wants to specify
 924 dnl a directory name, but what we're doing here is an enable/disable kind
 925 dnl of thing and specifying both --enable and --with is klunky.
 926 dnl If you reeely want this to be --with, go ahead and change it.
 927 AC_ARG_ENABLE(cgen-maint,
 928 [  --enable-cgen-maint[=DIR]    build cgen generated files],
 929 [case "${enableval}" in
 930   yes)  cgen_maint=yes ;;
 931   no)   cgen_maint=no ;;
 932   *)
 933         # argument is cgen install directory (not implemented yet).
 934         # Having a `share' directory might be more appropriate for the .scm,
 935         # .cpu, etc. files.
 936         cgendir=${cgen_maint}/lib/cgen
 937         cgen=guile
 938         ;;
 939 esac])dnl
 940 dnl AM_CONDITIONAL(CGEN_MAINT, test x${cgen_maint} != xno)
 941 if test x${cgen_maint} != xno ; then
 942   CGEN_MAINT=''
 943 else
 944   CGEN_MAINT='#'
 945 fi
 946 AC_SUBST(CGEN_MAINT)
 947 AC_SUBST(cgendir)
 948 AC_SUBST(cgen)
 949 ])