File:  [gforth] / gforth / configure.in
Revision 1.262: download - view: text, annotated - select for diffs
Tue Oct 28 22:23:26 2008 UTC (11 years ago) by anton
Branches: MAIN
CVS tags: HEAD
fixed ia64 bug corresponding to the arm_cacheflush bug

    1: dnl Process this file with autoconf to produce a configure script.
    2: 
    3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc.
    4: 
    5: #This file is part of Gforth.
    6: 
    7: #Gforth is free software; you can redistribute it and/or
    8: #modify it under the terms of the GNU General Public License
    9: #as published by the Free Software Foundation, either version 3
   10: #of the License, or (at your option) any later version.
   11: 
   12: #This program is distributed in the hope that it will be useful,
   13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
   15: #GNU General Public License for more details.
   16: 
   17: #You should have received a copy of the GNU General Public License
   18: #along with this program. If not, see http://www.gnu.org/licenses/.
   19: 
   20: 
   21: dnl We use some automake macros here,
   22: dnl but don't use automake for creating Makefile.in
   23: AC_INIT([gforth],[0.6.9-20081026],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
   24: AC_PREREQ(2.54)
   25: #snapshots have numbers major.minor.release-YYYYMMDD
   26: #note that lexicographic ordering must be heeded.
   27: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
   28: UPDATED="October 26, 2008"
   29: AC_SUBST(UPDATED)
   30: AC_CONFIG_HEADERS(engine/config.h)
   31: 
   32: #remnants from having ltdl as convenience library
   33: LTDLDEPS=""
   34: LTDLINCL=""
   35: LIBLTDL=""
   36: LTDL_LDLIBS=""
   37: AC_SUBST(LTDLDEPS)
   38: AC_SUBST(LTDLINCL)
   39: AC_SUBST(LIBLTDL)
   40: AC_SUBST(LTDL_LDLIBS)
   41: 
   42: #suppress the "-g -O2" default
   43: test "$CFLAGS" || CFLAGS=-O2
   44: 
   45: AC_ARG_ENABLE(force-cdiv,
   46: 	AC_HELP_STRING([--enable-force-cdiv],
   47: 		       [  Use the native C division - symmetric - instead of
   48: 		          floored division (default disabled).]),
   49: 	,enable_force_cdiv=no)
   50: test "$enable_force_cdiv" = "no"||
   51:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
   52: 
   53: AC_SUBST(PROFEXES)
   54: AC_SUBST(PROFOBJS)
   55: AC_ARG_ENABLE(prof,
   56: 	AC_HELP_STRING([--enable-prof],
   57: 			[ Build gforth-prof, which outputs frequently occuring
   58:                           sequences of primitives.]),
   59: 	,enable_prof=no)
   60: if test "$enable_prof" != "no"; then
   61:   PROFEXES='gforth-prof$(OPT)$(EXE)'; PROFOBJS='engine-prof$(OPT).o main-prof$(OPT).o profile$(OPT).o'
   62: fi
   63: 
   64: AC_ARG_WITH(debug,
   65: [  --with-debug		  specifies option -g to compile with debug info
   66:   --without-debug	  omits the -g switch and creates smaller images on
   67: 			  machines where "strip" has problems with gcc style
   68: 			  debugging informations.],
   69: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   70: 
   71: GCC_LD="\$(GCC)"
   72: EC_MODE="false"
   73: EC=""
   74: engine2='engine2$(OPT).o'
   75: engine_fast2='engine-fast2$(OPT).o'
   76: no_dynamic=""
   77: image_i=""
   78: signals_o="io.o signals.o"
   79: 
   80: AC_ARG_WITH(ec,
   81: 	AC_HELP_STRING([--with-ec=<arch>],
   82: 			[  Build gforth for systems without OS.]),
   83: [if test "$withval" = "no"; then
   84:   echo "defining hosted system"
   85: else
   86:   echo "defining standalone system (${withval})"
   87:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
   88:   EC_MODE="true"
   89:   EC="-ec"
   90:   engine2=""
   91:   engine_fast2=""
   92:   no_dynamic="-DNO_DYNAMIC"
   93:   image_i="image.i"
   94:   if test "$withval" != "yes"; then
   95:     signals_o="io-${withval}.o"
   96:   else
   97:     signals_o="io.o"
   98:   fi
   99:   GCC_PATH=$(which $CC)
  100:   LIB_PATH=${GCC_PATH%/*/*}
  101:   GCC_LD="\$(LD)"
  102:   platform=${withval}
  103: fi])
  104: 
  105: #variables mentioned in INSTALL
  106: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
  107: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  108: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  109: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  110: AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)])
  111: AC_ARG_VAR(LIBCC_BUILD_SRC, [(Additional) libcc interface source files that should be processed on building and installation (default none)])
  112: 
  113: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  114: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
  115: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  116: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  117: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  118: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  119: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  120: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  121: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
  122: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
  123: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  124: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  125: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
  126: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  127: AC_ARG_VAR(asmcomment, [assembler comment start string])
  128: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  129: AC_ARG_VAR(LTDL_LIBRARY_PATH, [additional directories for libltdl (for some 64-bit platforms)])
  130: 
  131: #set up feature test macros, so the tests get them right:
  132: # turn on all POSIX, SUSv3, and GNU features if available
  133: AC_GNU_SOURCE
  134: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  135: 
  136: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  137: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  138: dnl but not for _XOPEN_SOURCE)
  139: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  140: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  141: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  142: # turn on large file support with 64-bit off_t where available
  143: AC_SYS_LARGEFILE
  144: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  145: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  146: 
  147: #currently we force direct threading this way.  Eventually we should
  148: #setup in the arch and engine files right
  149: 
  150: AC_PROG_CC
  151: 
  152: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  153: 
  154: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
  155: test x$condbranch_opt = x && 
  156: if ($CC -v 2>&1 |grep 'gcc version 3' >/dev/null); then
  157:    condbranch_opt=0
  158: else
  159:    condbranch_opt=1
  160: fi
  161: AC_MSG_RESULT($condbranch_opt)
  162: AC_SUBST(condbranch_opt)
  163: 
  164: AC_SUBST(CC)
  165: AC_SUBST(GCC_LD)
  166: AC_SUBST(DEBUGFLAG)
  167: AC_SUBST(EC)
  168: AC_SUBST(EC_MODE)
  169: AC_SUBST(engine2)
  170: AC_SUBST(engine_fast2)
  171: AC_SUBST(no_dynamic)
  172: AC_SUBST(image_i)
  173: AC_SUBST(signals_o)
  174: 
  175: #this is used to disable some (not generally essential) part of the
  176: #Makefile that some makes don't grok.  It would be better to test for
  177: #this specific Makefile feature than the make version.
  178: AC_MSG_CHECKING(make type)
  179: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  180: GNUMAKE='#'
  181: test "$make_type" = "GNU Make" && GNUMAKE=''
  182: AC_MSG_RESULT($make_type)
  183: AC_SUBST(GNUMAKE)
  184: 
  185: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  186: OLDLDFLAGS=$LDFLAGS
  187: LDFLAGS="$LDFLAGS -export-dynamic"
  188: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  189: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  190: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  191: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  192: AC_MSG_RESULT($ac_export_dynamic)
  193: 
  194: #terminology is a bit unusual here: The host is the system on which
  195: #gforth will run; the system on which configure will run is the `build'
  196: AC_CANONICAL_HOST
  197: case "$host_cpu" in
  198: 	arm*)
  199: 		machine=arm
  200: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  201: 		if test x$platform = xnxt; then
  202: 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
  203: 		fi
  204: 		if test -z $arm_cacheflush; then
  205: 		   case "$host_os" in
  206: 		     *linux*)
  207: 			AC_LIBOBJ(../arch/arm/cacheflush-linux) 
  208: 			;;
  209: 		     *)   
  210: 			no_dynamic_default=1
  211: 			AC_LIBOBJ(../arch/arm/cacheflush0)
  212: 			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  213: 			;;
  214:                    esac
  215:                 else
  216:                    AC_LIBOBJ(../$arm_cacheflush)
  217:                    test $srcdir = . || AC_MSG_WARN([setting arm_cacheflush requires building in the source directory])
  218: 		fi
  219:                 #longer skipcodes lead to problems on ARM, and it uses
  220:                 #only 4-byte alignment anyway
  221: 		test "$skipcode" || skipcode="nop"
  222: 		;;
  223: 	hppa*)
  224: 		machine=hppa
  225: 		AC_LIBOBJ(../arch/hppa/cache)
  226: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  227: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  228: 		LIBS="$LIBS -L/lib/pa1.1/"
  229: 		;;
  230: 	sparc*)
  231: 		machine=sparc
  232: 		;;
  233: 	i386)
  234: 		machine=386
  235: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  236: 		;;
  237: 	i486)
  238: 		machine=386
  239: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  240: 		;;
  241: 	i*86)
  242: 		machine=386
  243: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  244: 		CFLAGS_1="$CFLAGS"
  245: 		CFLAGS="$CFLAGS -march=pentium"
  246: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  247: 		;;
  248: 	x86_64)
  249: 		case $CC
  250: 		in
  251: 		    *-m32*)
  252: 		    	machine=386
  253: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  254: 			CFLAGS_1="$CFLAGS"
  255: 			CFLAGS="$CFLAGS -march=athlon64"
  256: 			;;
  257: 		    *)
  258: 		    	machine=amd64
  259: 			;;
  260: 		esac
  261: 		;;
  262: 	ia64*)
  263: 		machine=ia64
  264: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  265: 		test "$skipcode" || skipcode="nop.i 0"
  266: 		#".skip 16" passes the test below,
  267: 		# but gives an assembler error in engine
  268: 		;;
  269:         m68k)
  270: 		machine=m68k
  271: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  272: 		if test "$host_os" = "nextstep3"
  273: 		then
  274: 			AC_LIBOBJ(termios)
  275: 		fi
  276: 		;;
  277: 	mips*)
  278: 		machine=mips
  279: 		#dynamic native code has the following problems on MIPS:
  280: 		#
  281: 		#1) J/JAL seems relocatable, but is are only
  282: 		#relocatable within a 256MB-segment.  While we try to
  283: 		#get the linker to arrange this, there is no guarantee
  284: 		#that this will succeed (and if the user uses a lot of
  285: 		#memory, it is likely to fail).
  286: 		#
  287: 		#2) The way we generate dynamic native code may
  288: 		#violate MIPS architectural restrictions (in
  289: 		#particular, the delay slots of LW, MFLO, etc.)
  290: 		#
  291: 		#Therefore we disable dynamic native code by default:
  292: 		if test -z "$no_dynamic_default"; then
  293: 		    no_dynamic_default=1
  294: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  295: 		fi
  296: 		;;
  297: 	alpha*)
  298: 		machine=alpha
  299: 		#full IEEE FP support for more uniformity across platforms:
  300: 		CFLAGS="$CFLAGS -mieee"
  301: 		;;
  302: 	power*|rs6000)
  303: 		machine=power
  304: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  305: 		#long long is broken on (at least) gcc-2.95.* for PPC
  306: 		test x$ac_cv_sizeof_long_long = x && 
  307: 		($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
  308: 		ac_cv_sizeof_long_long=0
  309:                 #The only architecture with enough callee-saved registers
  310:                 test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
  311:                 #or use 2, hardly slower at run-time and starts up faster
  312: 		;;
  313: 	*)
  314: 		AC_MSG_WARN([Using a generic machine description])
  315: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  316: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  317: 		machine=generic
  318: 		#I-cache flushing would be needed for dynamic code generation
  319: 		if test -z $no_dynamic_default; then
  320: 		    no_dynamic_default=1
  321: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  322: 		fi
  323: esac
  324: AC_SUBST(host)
  325: 
  326: MAKEINC=""
  327: 
  328: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  329: if test x$EC_MODE = xtrue
  330: then
  331: 	echo "Check for arch/$machine/$platform/gforth.ld"
  332: 	if test -f arch/$machine/$platform/gforth.ld
  333: 	then
  334: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  335: 		if test x$platform = xnxt; then
  336: 			LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS"
  337: 		fi
  338: 	fi
  339: 	if test -f arch/$machine/$platform/make.inc
  340: 	then
  341: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  342: 	fi
  343: fi
  344: AC_SUBST(MAKEINC)
  345: 
  346: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  347: 
  348: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
  349: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
  350: 		   [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
  351: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  352: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  353: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  354: 
  355: test x$GCC_PR15242_WORKAROUND = x ||
  356: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  357:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  358: 
  359: dnl the following macro produces a warning with autoconf-2.1
  360: AC_CHECK_SIZEOF(char *)
  361: case "$ac_cv_sizeof_char_p" in
  362:   2)
  363:     wordsize=16
  364:     ;;
  365:   4)
  366:     wordsize=32
  367:     ;;
  368:   8)
  369:     wordsize=64
  370:     ;;
  371: esac
  372: 
  373: AC_CHECK_SIZEOF(void *)
  374: case "$ac_cv_sizeof_void_p" in
  375:   2)
  376:     vwordsize=16
  377:     ;;
  378:   4)
  379:     vwordsize=32
  380:     ;;
  381:   8)
  382:     vwordsize=64
  383:     ;;
  384: esac
  385: 
  386: AC_CHECK_SIZEOF(char)
  387: AC_CHECK_SIZEOF(short)
  388: AC_CHECK_SIZEOF(int)
  389: AC_CHECK_SIZEOF(long)
  390: AC_CHECK_SIZEOF(long long)
  391: AC_CHECK_SIZEOF(intptr_t)
  392: AC_CHECK_SIZEOF(int128_t)
  393: AC_CHECK_SIZEOF(uint128_t)
  394: 
  395: AC_MSG_CHECKING([for a C type for cells])
  396: ac_cv_int_type_cell=none
  397: case "$ac_cv_sizeof_char_p" in
  398:   $ac_cv_sizeof_int)
  399:     ac_cv_int_type_cell=int
  400:     ;;
  401:   $ac_cv_sizeof_short)
  402:     ac_cv_int_type_cell=short
  403:     ;;
  404:   $ac_cv_sizeof_char)
  405:     ac_cv_int_type_cell=char
  406:     ;;
  407:   $ac_cv_sizeof_long)
  408:     ac_cv_int_type_cell=long
  409:     ;;
  410:   $ac_cv_sizeof_long_long)
  411:     ac_cv_int_type_cell="long long"
  412:     ;;
  413:   $ac_cv_sizeof_intptr_t)
  414:     ac_cv_int_type_cell="intptr_t"
  415:     ;;
  416: esac
  417: AC_MSG_RESULT($ac_cv_int_type_cell)
  418: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  419: 
  420: AC_MSG_CHECKING([for a C type for wydes])
  421: ac_cv_wyde_type_cell=none
  422: case 2 in
  423:   $ac_cv_sizeof_int)
  424:     ac_cv_wyde_type_cell=int
  425:     ;;
  426:   $ac_cv_sizeof_short)
  427:     ac_cv_wyde_type_cell=short
  428:     ;;
  429:   $ac_cv_sizeof_char)
  430:     ac_cv_wyde_type_cell=char
  431:     ;;
  432:   $ac_cv_sizeof_long)
  433:     ac_cv_wyde_type_cell=long
  434:     ;;
  435:   $ac_cv_sizeof_long_long)
  436:     ac_cv_wyde_type_cell="long long"
  437:     ;;
  438:   $ac_cv_sizeof_intptr_t)
  439:     ac_cv_wyde_type_cell="intptr_t"
  440:     ;;
  441: esac
  442: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  443: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  444: 
  445: AC_MSG_CHECKING([for a C type for tetrabytes])
  446: ac_cv_tetrabyte_type_cell=none
  447: case 4 in
  448:   $ac_cv_sizeof_int)
  449:     ac_cv_tetrabyte_type_cell=int
  450:     ;;
  451:   $ac_cv_sizeof_short)
  452:     ac_cv_tetrabyte_type_cell=short
  453:     ;;
  454:   $ac_cv_sizeof_char)
  455:     ac_cv_tetrabyte_type_cell=char
  456:     ;;
  457:   $ac_cv_sizeof_long)
  458:     ac_cv_tetrabyte_type_cell=long
  459:     ;;
  460:   $ac_cv_sizeof_long_long)
  461:     ac_cv_tetrabyte_type_cell="long long"
  462:     ;;
  463:   $ac_cv_sizeof_intptr_t)
  464:     ac_cv_tetrabyte_type_cell="intptr_t"
  465:     ;;
  466: esac
  467: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  468: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  469: 
  470: AC_MSG_CHECKING([for a C type for double-cells])
  471: ac_cv_int_type_double_cell=none
  472: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  473:   $ac_cv_sizeof_short)
  474:     ac_cv_int_type_double_cell=short
  475:     ;;
  476:   $ac_cv_sizeof_int)
  477:     ac_cv_int_type_double_cell=int
  478:     ;;
  479:   $ac_cv_sizeof_long)
  480:     ac_cv_int_type_double_cell=long
  481:     ;;
  482:   $ac_cv_sizeof_long_long)
  483:     ac_cv_int_type_double_cell="long long"
  484:     ;;
  485:   $ac_cv_sizeof_intptr_t)
  486:     ac_cv_int_type_double_cell="intptr_t"
  487:     ;;
  488:   $ac_cv_sizeof_int128_t)
  489:     ac_cv_int_type_double_cell="int128_t"
  490:     ;;
  491: esac
  492: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  493: 
  494: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  495: ac_cv_int_type_double_ucell=none
  496: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  497:   $ac_cv_sizeof_short)
  498:     ac_cv_int_type_double_ucell="unsigned short"
  499:     ;;
  500:   $ac_cv_sizeof_int)
  501:     ac_cv_int_type_double_ucell="unsigned int"
  502:     ;;
  503:   $ac_cv_sizeof_long)
  504:     ac_cv_int_type_double_ucell="unsigned long"
  505:     ;;
  506:   $ac_cv_sizeof_long_long)
  507:     ac_cv_int_type_double_ucell="unsigned long long"
  508:     ;;
  509:   $ac_cv_sizeof_intptr_t)
  510:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  511:     ;;
  512:   $ac_cv_sizeof_uint128_t)
  513:     ac_cv_int_type_double_ucell="uint128_t"
  514:     ;;
  515: esac
  516: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  517: 
  518: if test "$ac_cv_int_type_double_cell" != none && \
  519:    test "$ac_cv_int_type_double_ucell" != none
  520: then
  521: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  522: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  523:         OPTS=-ll
  524: else
  525:         if test "$ac_cv_sizeof_char_p" = 8; then
  526:            OPTS="-ll -noll"
  527:         else
  528:            OPTS=-noll
  529:         fi
  530: fi
  531: 
  532: if grep FORCE_REG $srcdir/arch/$machine/machine.h >/dev/null; then
  533:    OPTS2=''
  534:    for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
  535:    OPTS="$OPTS2 $OPTS"
  536: else
  537:   AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
  538: fi
  539: AC_SUBST(OPTS)
  540: 
  541: AC_TYPE_OFF_T
  542: AC_CHECK_SIZEOF(off_t)
  543: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  544: ac_small_off_t=$?
  545: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  546: 
  547: ENGINE_FLAGS=
  548: AC_SUBST(ENGINE_FLAGS)
  549: 
  550: # Try if GCC understands -fno-gcse
  551: 
  552: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  553: CFLAGS_1="$CFLAGS"
  554: CFLAGS="$CFLAGS -fno-gcse"
  555: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  556: CFLAGS="$CFLAGS_1"
  557: AC_MSG_RESULT($ac_nogcse)
  558: 
  559: # Try if GCC understands -fno-strict-aliasing
  560: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  561: CFLAGS_1="$CFLAGS"
  562: CFLAGS="$CFLAGS -fno-strict-aliasing"
  563: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  564: CFLAGS="$CFLAGS_1"
  565: AC_MSG_RESULT($ac_nostrictaliasing)
  566: 
  567: # Try if GCC understands -fno-crossjumping
  568: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  569: CFLAGS_1="$CFLAGS"
  570: CFLAGS="$CFLAGS -fno-crossjumping"
  571: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  572: CFLAGS="$CFLAGS_1"
  573: AC_MSG_RESULT($ac_nocrossjumping)
  574: 
  575: # Try if GCC understands -fno-reorder-blocks
  576: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  577: CFLAGS_1="$CFLAGS"
  578: CFLAGS="$CFLAGS -fno-reorder-blocks"
  579: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  580: CFLAGS="$CFLAGS_1"
  581: AC_MSG_RESULT($ac_noreorder_blocks)
  582: 
  583: # Try if GCC understands -falign-labels=1
  584: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  585: CFLAGS_1="$CFLAGS"
  586: CFLAGS="$CFLAGS -falign-labels=1"
  587: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  588: CFLAGS="$CFLAGS_1"
  589: AC_MSG_RESULT($ac_align_labels)
  590: 
  591: # Try if GCC understands -falign-loops=1
  592: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  593: CFLAGS_1="$CFLAGS"
  594: CFLAGS="$CFLAGS -falign-loops=1"
  595: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  596: CFLAGS="$CFLAGS_1"
  597: AC_MSG_RESULT($ac_align_loops)
  598: 
  599: # Try if GCC understands -falign-jumps=1
  600: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  601: CFLAGS_1="$CFLAGS"
  602: CFLAGS="$CFLAGS -falign-jumps=1"
  603: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  604: CFLAGS="$CFLAGS_1"
  605: AC_MSG_RESULT($ac_align_jumps)
  606: 
  607: # Try if GCC understands __attribute__((unused))
  608: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  609: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  610: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  611: AC_MSG_RESULT($MAYBE_UNUSED)
  612: 
  613: #try if m4 understands -s
  614: AC_MSG_CHECKING([how to invoke m4])
  615: if m4 -s /dev/null >/dev/null 2>&1; then
  616:  M4="m4 -s"
  617: else
  618:  M4=m4
  619: fi
  620: AC_SUBST(M4)
  621: AC_MSG_RESULT($M4)
  622: 
  623: # Find installed Gforth
  624: AC_MSG_CHECKING([for gforth])
  625: GFORTH="`cd / && which gforth 2>/dev/null`"
  626: #the "$srcdir" = "." test defends agains the "../" bug in gforth-0.6.2
  627: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null  && test "$srcdir" = ".") || GFORTH=""
  628: if test -z "$GFORTH"; then
  629:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  630:   kernel_anti_dependence=''
  631: else
  632:   PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  633:   kernel_anti_dependence='$(kernel_fi)'
  634: fi
  635: AC_SUBST(PREFORTH)
  636: AC_SUBST(kernel_anti_dependence)
  637: AC_MSG_RESULT($PREFORTH)
  638: 
  639: #echo "machine='$machine'"
  640: 
  641: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  642: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  643: AC_SUBST(asm_fs)
  644: 
  645: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  646: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  647: AC_SUBST(disasm_fs)
  648: 
  649: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  650: 
  651: case "$host_os" in
  652: 	*win32*)
  653: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  654: 		DIRSEP="\\\\"
  655: 		PATHSEP=";"
  656: 		#we want the builtins of command.com/cmd.exe and its
  657: 		# handling of .com files.
  658: 		#$COMSPEC contains the name of the Windows shell;
  659: 		# the ./ is there, because the bash does not recognize
  660: 		# absolute DOS filenames
  661: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  662: 		;;
  663: 	*darwin*)
  664: 		#Darwin uses some funny preprocessor by default; eliminate it:
  665: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  666: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  667: 		DIRSEP="/"
  668: 		PATHSEP=":"
  669: 		DEFAULTSYSTEMPREFIX=""
  670:                 #the following magic value was suggested by
  671:                 #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
  672:                 AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
  673: 		;;
  674: 	*linux*)
  675: 		DIRSEP="/"
  676: 		PATHSEP=":"
  677: 		DEFAULTSYSTEMPREFIX=""
  678: 		if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
  679: 		   LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
  680: 		fi
  681: 		;;
  682: 	*)
  683: 		DIRSEP="/"
  684: 		PATHSEP=":"
  685: 		DEFAULTSYSTEMPREFIX=""
  686: 		;;
  687: esac
  688: AC_SUBST(DIRSEP)
  689: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  690: AC_SUBST(PATHSEP)
  691: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  692: AC_SUBST(DEFAULTSYSTEMPREFIX)
  693: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  694: if test -n "$LTDL_LIBRARY_PATH"; then
  695:    AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
  696: fi                                                                
  697: 
  698: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  699: #This magic incantation  seems to be completely undocumented.
  700: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  701: 
  702: dnl Now a little support for DOS/DJGCC
  703: AC_SUBST(GFORTH_EXE)
  704: GFORTH_EXE="true"
  705: AC_SUBST(GFORTHFAST_EXE)
  706: GFORTHFAST_EXE="true"
  707: AC_SUBST(GFORTHITC_EXE)
  708: GFORTHITC_EXE="true"
  709: AC_SUBST(GFORTHDITC_EXE)
  710: GFORTHDITC_EXE="true"
  711: 
  712: AC_SUBST(FORTHSIZES)
  713: 
  714: dnl if test "$PEEPHOLE" = "yes"
  715: dnl then
  716: dnl    PEEPHOLEFLAG="true"
  717: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  718: dnl else
  719: dnl    PEEPHOLEFLAG="false"
  720: dnl fi
  721: PEEPHOLEFLAG="true"
  722: AC_SUBST(PEEPHOLEFLAG)
  723: 
  724: dnl copy commands for systems that don't have links
  725: AC_SUBST(LINK_KERNL)
  726: LINK_KERNL=""
  727: 
  728: #if test $host_os=dos
  729: #then
  730: #  echo Configuring for DOS!!!
  731: #  MAKE_EXE="coff2exe gforth"
  732: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  733: #fi
  734: 
  735: dnl the following macro produces a warning with autoconf-2.1
  736: AC_C_BIGENDIAN
  737: AC_SUBST(KERNEL)
  738: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  739: if test $ac_cv_c_bigendian != no; then
  740:   bytesex=b
  741:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  742: else
  743:   bytesex=l
  744:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  745: fi
  746: 
  747: #check how to do asm(".skip 16")
  748: #echo "CFLAGS=$CFLAGS"
  749: #echo "ac_link=$ac_link"
  750: AC_MSG_CHECKING([if and how we can waste code space])
  751: if test -z "$skipcode"; then
  752:     skipcode=no
  753:     CFLAGS_1="$CFLAGS"
  754:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  755:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  756:     do
  757: 	AC_TRY_RUN(
  758: [int foo(int,int,int);
  759: main()
  760: {
  761:   exit(foo(0,0,0)!=16);
  762: }
  763: int foo(int x, int y, int z)
  764: {
  765:   static void *labels[]={&&label1, &&label2};
  766:   if (x) {
  767:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  768:   label1:
  769:     asm("$i"); /* or ".space 16" or somesuch */
  770:   label2: ;
  771:   }
  772:   {
  773:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  774:   return labels[1]-labels[0];
  775:   }
  776: }]
  777: 	,skipcode=$i; break
  778: 	,,)
  779:     done
  780:     CFLAGS=$CFLAGS_1
  781: fi
  782: AC_MSG_RESULT($skipcode)
  783: if test "$skipcode" = no
  784: then 
  785:     if test -z $no_dynamic_default; then
  786: 	no_dynamic_default=1
  787: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  788:     fi
  789:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  790: else
  791:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  792: fi
  793: 
  794: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  795: #the point here is to get asm statements that look different to
  796: #gcc's "optimizer"
  797: if test -z "$asmcomment"; then
  798:     asmcomment=no
  799:     CFLAGS_1="$CFLAGS"
  800:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  801:     for i in '"# "' '"! "' '"; "'; do
  802: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  803:     done
  804:     CFLAGS=$CFLAGS_1
  805: fi
  806: AC_MSG_RESULT($asmcomment)
  807: if test "$asmcomment" != no
  808: then 
  809:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  810: fi
  811: 
  812: test "$no_dynamic_default" || no_dynamic_default=0
  813: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  814: 
  815: dnl Checks for programs.
  816: AC_PROG_LN_S
  817: AC_PROG_INSTALL
  818: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  819: 
  820: dnl MacOS X has a libtool that does something else
  821: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  822: 
  823: if test -n "$GNU_LIBTOOL"; then
  824:   build_libcc_named=build-libcc-named
  825: else
  826:   build_libcc_named=""
  827: fi
  828: AC_SUBST(build_libcc_named)
  829: 
  830: 
  831: dnl Checks for library functions
  832: dnl This check is just for making later checks link with libm.
  833: dnl using sin here is no good idea since it is built-into gcc and typechecked
  834: AC_CHECK_LIB(m,asin)
  835: AC_CHECK_LIB(ltdl,lt_dlinit)
  836: #check for libffi 2.x
  837: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
  838: if test -z "$FFI_H_NAME"; then
  839:   AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
  840: fi
  841: AC_SUBST(FFI_H_NAME)
  842: AC_CHECK_LIB(ffi,ffi_call)
  843: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
  844: then
  845:   LIBFFIFLAG="true"
  846:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
  847: else
  848:   LIBFFIFLAG="false"
  849: fi
  850: #check for ffcall libraries
  851: #unfortunately, these four calls are separated out into a library each.
  852: AC_CHECK_LIB(avcall,__builtin_avcall)
  853: dnl AC_CHECK_LIB(callback,__vacall_r)
  854: dnl AC_CHECK_LIB(vacall,vacall)
  855: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
  856: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
  857:   FFCALLFLAG="true"
  858:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
  859: else
  860:   FFCALLFLAG="false"
  861: fi
  862: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
  863:   AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
  864: fi
  865: AC_SUBST(LIBFFIFLAG)
  866: AC_SUBST(FFCALLFLAG)
  867: AC_SUBST(LIBCC_BUILD_SRC)
  868: if test "$host_os" != "nextstep3"
  869: then
  870: 	AC_FUNC_MEMCMP
  871: fi
  872: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  873: AC_FUNC_FSEEKO
  874: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  875: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  876: AC_DECL_SYS_SIGLIST
  877: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  878: AC_CHECK_FUNCS(expm1 log1p)
  879: AC_REPLACE_FUNCS(rint ecvt)
  880: dnl No check for select, because our replacement is no good under
  881: dnl anything but DOS
  882: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
  883: AC_FUNC_FNMATCH
  884: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  885: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
  886: AM_PATH_LISPDIR
  887: 
  888: kernel_fi=kernl${vwordsize}${bytesex}.fi
  889: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  890: AC_SUBST(kernel_fi)
  891: AC_SUBST(include_fi)
  892: 
  893: #this breaks bindists
  894: #dnl replace srource directory by absolute value
  895: #if test $srcdir = "."; then srcdir=`pwd` 
  896: #fi
  897: 
  898: AC_SUBST(machine)
  899: AC_CONFIG_FILES([
  900: Makefile
  901: Makedist
  902: gforthmi
  903: vmgen
  904: machpc.fs
  905: envos.fs
  906: preforth
  907: engine/Makefile
  908: engine/libcc.h
  909: doc/version.texi
  910: build-ec ])
  911: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  912: chmod +x gforthmi
  913: chmod +x vmgen
  914: chmod +x build-ec
  915: chmod +x preforth
  916: test -d kernel||mkdir kernel
  917: if test $srcdir != "."; then ln -sf $srcdir/gforth.el .; fi
  918: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  919: $srcdir/mkinstalldirs arch/$machine
  920: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],
  921: [PACKAGE_VERSION=$PACKAGE_VERSION
  922:  machine=$machine])
  923: AC_OUTPUT
  924: 

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