File:  [gforth] / gforth / configure.in
Revision 1.264: download - view: text, annotated - select for diffs
Sat Nov 1 22:15:32 2008 UTC (11 years ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added --tag=CC for glibtool configure option

    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:                 #the skipcode that is normally selected below does not
  314:                 #work with gcc-3.[34]
  315: 		test "$skipcode" || skipcode="nop\nnop\nnop\nnop"
  316: 		;;
  317: 	*)
  318: 		AC_MSG_WARN([Using a generic machine description])
  319: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  320: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  321: 		machine=generic
  322: 		#I-cache flushing would be needed for dynamic code generation
  323: 		if test -z $no_dynamic_default; then
  324: 		    no_dynamic_default=1
  325: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  326: 		fi
  327: esac
  328: AC_SUBST(host)
  329: 
  330: MAKEINC=""
  331: 
  332: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  333: if test x$EC_MODE = xtrue
  334: then
  335: 	echo "Check for arch/$machine/$platform/gforth.ld"
  336: 	if test -f arch/$machine/$platform/gforth.ld
  337: 	then
  338: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  339: 		if test x$platform = xnxt; then
  340: 			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 $LIBS"
  341: 		fi
  342: 	fi
  343: 	if test -f arch/$machine/$platform/make.inc
  344: 	then
  345: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  346: 	fi
  347: fi
  348: AC_SUBST(MAKEINC)
  349: 
  350: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  351: 
  352: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
  353: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
  354: 		   [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
  355: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  356: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  357: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  358: 
  359: test x$GCC_PR15242_WORKAROUND = x ||
  360: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  361:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  362: 
  363: dnl the following macro produces a warning with autoconf-2.1
  364: AC_CHECK_SIZEOF(char *)
  365: case "$ac_cv_sizeof_char_p" in
  366:   2)
  367:     wordsize=16
  368:     ;;
  369:   4)
  370:     wordsize=32
  371:     ;;
  372:   8)
  373:     wordsize=64
  374:     ;;
  375: esac
  376: 
  377: AC_CHECK_SIZEOF(void *)
  378: case "$ac_cv_sizeof_void_p" in
  379:   2)
  380:     vwordsize=16
  381:     ;;
  382:   4)
  383:     vwordsize=32
  384:     ;;
  385:   8)
  386:     vwordsize=64
  387:     ;;
  388: esac
  389: 
  390: AC_CHECK_SIZEOF(char)
  391: AC_CHECK_SIZEOF(short)
  392: AC_CHECK_SIZEOF(int)
  393: AC_CHECK_SIZEOF(long)
  394: AC_CHECK_SIZEOF(long long)
  395: AC_CHECK_SIZEOF(intptr_t)
  396: AC_CHECK_SIZEOF(int128_t)
  397: AC_CHECK_SIZEOF(uint128_t)
  398: 
  399: AC_MSG_CHECKING([for a C type for cells])
  400: ac_cv_int_type_cell=none
  401: case "$ac_cv_sizeof_char_p" in
  402:   $ac_cv_sizeof_int)
  403:     ac_cv_int_type_cell=int
  404:     ;;
  405:   $ac_cv_sizeof_short)
  406:     ac_cv_int_type_cell=short
  407:     ;;
  408:   $ac_cv_sizeof_char)
  409:     ac_cv_int_type_cell=char
  410:     ;;
  411:   $ac_cv_sizeof_long)
  412:     ac_cv_int_type_cell=long
  413:     ;;
  414:   $ac_cv_sizeof_long_long)
  415:     ac_cv_int_type_cell="long long"
  416:     ;;
  417:   $ac_cv_sizeof_intptr_t)
  418:     ac_cv_int_type_cell="intptr_t"
  419:     ;;
  420: esac
  421: AC_MSG_RESULT($ac_cv_int_type_cell)
  422: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  423: 
  424: AC_MSG_CHECKING([for a C type for wydes])
  425: ac_cv_wyde_type_cell=none
  426: case 2 in
  427:   $ac_cv_sizeof_int)
  428:     ac_cv_wyde_type_cell=int
  429:     ;;
  430:   $ac_cv_sizeof_short)
  431:     ac_cv_wyde_type_cell=short
  432:     ;;
  433:   $ac_cv_sizeof_char)
  434:     ac_cv_wyde_type_cell=char
  435:     ;;
  436:   $ac_cv_sizeof_long)
  437:     ac_cv_wyde_type_cell=long
  438:     ;;
  439:   $ac_cv_sizeof_long_long)
  440:     ac_cv_wyde_type_cell="long long"
  441:     ;;
  442:   $ac_cv_sizeof_intptr_t)
  443:     ac_cv_wyde_type_cell="intptr_t"
  444:     ;;
  445: esac
  446: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  447: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  448: 
  449: AC_MSG_CHECKING([for a C type for tetrabytes])
  450: ac_cv_tetrabyte_type_cell=none
  451: case 4 in
  452:   $ac_cv_sizeof_int)
  453:     ac_cv_tetrabyte_type_cell=int
  454:     ;;
  455:   $ac_cv_sizeof_short)
  456:     ac_cv_tetrabyte_type_cell=short
  457:     ;;
  458:   $ac_cv_sizeof_char)
  459:     ac_cv_tetrabyte_type_cell=char
  460:     ;;
  461:   $ac_cv_sizeof_long)
  462:     ac_cv_tetrabyte_type_cell=long
  463:     ;;
  464:   $ac_cv_sizeof_long_long)
  465:     ac_cv_tetrabyte_type_cell="long long"
  466:     ;;
  467:   $ac_cv_sizeof_intptr_t)
  468:     ac_cv_tetrabyte_type_cell="intptr_t"
  469:     ;;
  470: esac
  471: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  472: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  473: 
  474: AC_MSG_CHECKING([for a C type for double-cells])
  475: ac_cv_int_type_double_cell=none
  476: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  477:   $ac_cv_sizeof_short)
  478:     ac_cv_int_type_double_cell=short
  479:     ;;
  480:   $ac_cv_sizeof_int)
  481:     ac_cv_int_type_double_cell=int
  482:     ;;
  483:   $ac_cv_sizeof_long)
  484:     ac_cv_int_type_double_cell=long
  485:     ;;
  486:   $ac_cv_sizeof_long_long)
  487:     ac_cv_int_type_double_cell="long long"
  488:     ;;
  489:   $ac_cv_sizeof_intptr_t)
  490:     ac_cv_int_type_double_cell="intptr_t"
  491:     ;;
  492:   $ac_cv_sizeof_int128_t)
  493:     ac_cv_int_type_double_cell="int128_t"
  494:     ;;
  495: esac
  496: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  497: 
  498: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  499: ac_cv_int_type_double_ucell=none
  500: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  501:   $ac_cv_sizeof_short)
  502:     ac_cv_int_type_double_ucell="unsigned short"
  503:     ;;
  504:   $ac_cv_sizeof_int)
  505:     ac_cv_int_type_double_ucell="unsigned int"
  506:     ;;
  507:   $ac_cv_sizeof_long)
  508:     ac_cv_int_type_double_ucell="unsigned long"
  509:     ;;
  510:   $ac_cv_sizeof_long_long)
  511:     ac_cv_int_type_double_ucell="unsigned long long"
  512:     ;;
  513:   $ac_cv_sizeof_intptr_t)
  514:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  515:     ;;
  516:   $ac_cv_sizeof_uint128_t)
  517:     ac_cv_int_type_double_ucell="uint128_t"
  518:     ;;
  519: esac
  520: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  521: 
  522: if test "$ac_cv_int_type_double_cell" != none && \
  523:    test "$ac_cv_int_type_double_ucell" != none
  524: then
  525: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  526: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  527:         OPTS=-ll
  528: else
  529:         if test "$ac_cv_sizeof_char_p" = 8; then
  530:            OPTS="-ll -noll"
  531:         else
  532:            OPTS=-noll
  533:         fi
  534: fi
  535: 
  536: if grep FORCE_REG $srcdir/arch/$machine/machine.h >/dev/null; then
  537:    OPTS2=''
  538:    for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
  539:    OPTS="$OPTS2 $OPTS"
  540: else
  541:   AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
  542: fi
  543: AC_SUBST(OPTS)
  544: 
  545: AC_TYPE_OFF_T
  546: AC_CHECK_SIZEOF(off_t)
  547: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  548: ac_small_off_t=$?
  549: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  550: 
  551: ENGINE_FLAGS=
  552: AC_SUBST(ENGINE_FLAGS)
  553: 
  554: # Try if GCC understands -fno-gcse
  555: 
  556: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  557: CFLAGS_1="$CFLAGS"
  558: CFLAGS="$CFLAGS -fno-gcse"
  559: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  560: CFLAGS="$CFLAGS_1"
  561: AC_MSG_RESULT($ac_nogcse)
  562: 
  563: # Try if GCC understands -fno-strict-aliasing
  564: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  565: CFLAGS_1="$CFLAGS"
  566: CFLAGS="$CFLAGS -fno-strict-aliasing"
  567: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  568: CFLAGS="$CFLAGS_1"
  569: AC_MSG_RESULT($ac_nostrictaliasing)
  570: 
  571: # Try if GCC understands -fno-crossjumping
  572: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  573: CFLAGS_1="$CFLAGS"
  574: CFLAGS="$CFLAGS -fno-crossjumping"
  575: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  576: CFLAGS="$CFLAGS_1"
  577: AC_MSG_RESULT($ac_nocrossjumping)
  578: 
  579: # Try if GCC understands -fno-reorder-blocks
  580: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  581: CFLAGS_1="$CFLAGS"
  582: CFLAGS="$CFLAGS -fno-reorder-blocks"
  583: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  584: CFLAGS="$CFLAGS_1"
  585: AC_MSG_RESULT($ac_noreorder_blocks)
  586: 
  587: # Try if GCC understands -falign-labels=1
  588: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  589: CFLAGS_1="$CFLAGS"
  590: CFLAGS="$CFLAGS -falign-labels=1"
  591: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  592: CFLAGS="$CFLAGS_1"
  593: AC_MSG_RESULT($ac_align_labels)
  594: 
  595: # Try if GCC understands -falign-loops=1
  596: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  597: CFLAGS_1="$CFLAGS"
  598: CFLAGS="$CFLAGS -falign-loops=1"
  599: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  600: CFLAGS="$CFLAGS_1"
  601: AC_MSG_RESULT($ac_align_loops)
  602: 
  603: # Try if GCC understands -falign-jumps=1
  604: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  605: CFLAGS_1="$CFLAGS"
  606: CFLAGS="$CFLAGS -falign-jumps=1"
  607: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  608: CFLAGS="$CFLAGS_1"
  609: AC_MSG_RESULT($ac_align_jumps)
  610: 
  611: # Try if GCC understands __attribute__((unused))
  612: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  613: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  614: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  615: AC_MSG_RESULT($MAYBE_UNUSED)
  616: 
  617: #try if m4 understands -s
  618: AC_MSG_CHECKING([how to invoke m4])
  619: if m4 -s /dev/null >/dev/null 2>&1; then
  620:  M4="m4 -s"
  621: else
  622:  M4=m4
  623: fi
  624: AC_SUBST(M4)
  625: AC_MSG_RESULT($M4)
  626: 
  627: # Find installed Gforth
  628: AC_MSG_CHECKING([for gforth])
  629: GFORTH="`cd / && which gforth 2>/dev/null`"
  630: #the "$srcdir" = "." test defends agains the "../" bug in gforth-0.6.2
  631: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null  && test "$srcdir" = ".") || GFORTH=""
  632: if test -z "$GFORTH"; then
  633:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  634:   kernel_anti_dependence=''
  635: else
  636:   PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  637:   kernel_anti_dependence='$(kernel_fi)'
  638: fi
  639: AC_SUBST(PREFORTH)
  640: AC_SUBST(kernel_anti_dependence)
  641: AC_MSG_RESULT($PREFORTH)
  642: 
  643: #echo "machine='$machine'"
  644: 
  645: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  646: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  647: AC_SUBST(asm_fs)
  648: 
  649: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  650: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  651: AC_SUBST(disasm_fs)
  652: 
  653: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  654: 
  655: case "$host_os" in
  656: 	*win32*)
  657: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  658: 		DIRSEP="\\\\"
  659: 		PATHSEP=";"
  660: 		#we want the builtins of command.com/cmd.exe and its
  661: 		# handling of .com files.
  662: 		#$COMSPEC contains the name of the Windows shell;
  663: 		# the ./ is there, because the bash does not recognize
  664: 		# absolute DOS filenames
  665: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  666: 		;;
  667: 	*darwin*)
  668: 		#Darwin uses some funny preprocessor by default; eliminate it:
  669: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  670: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  671: 		DIRSEP="/"
  672: 		PATHSEP=":"
  673: 		DEFAULTSYSTEMPREFIX=""
  674:                 #the following magic value was suggested by
  675:                 #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
  676:                 AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
  677: 		;;
  678: 	*linux*)
  679: 		DIRSEP="/"
  680: 		PATHSEP=":"
  681: 		DEFAULTSYSTEMPREFIX=""
  682: 		if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
  683: 		   LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
  684: 		fi
  685: 		;;
  686: 	*)
  687: 		DIRSEP="/"
  688: 		PATHSEP=":"
  689: 		DEFAULTSYSTEMPREFIX=""
  690: 		;;
  691: esac
  692: AC_SUBST(DIRSEP)
  693: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  694: AC_SUBST(PATHSEP)
  695: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  696: AC_SUBST(DEFAULTSYSTEMPREFIX)
  697: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  698: if test -n "$LTDL_LIBRARY_PATH"; then
  699:    AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
  700: fi                                                                
  701: 
  702: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  703: #This magic incantation  seems to be completely undocumented.
  704: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  705: 
  706: dnl Now a little support for DOS/DJGCC
  707: AC_SUBST(GFORTH_EXE)
  708: GFORTH_EXE="true"
  709: AC_SUBST(GFORTHFAST_EXE)
  710: GFORTHFAST_EXE="true"
  711: AC_SUBST(GFORTHITC_EXE)
  712: GFORTHITC_EXE="true"
  713: AC_SUBST(GFORTHDITC_EXE)
  714: GFORTHDITC_EXE="true"
  715: 
  716: AC_SUBST(FORTHSIZES)
  717: 
  718: dnl if test "$PEEPHOLE" = "yes"
  719: dnl then
  720: dnl    PEEPHOLEFLAG="true"
  721: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  722: dnl else
  723: dnl    PEEPHOLEFLAG="false"
  724: dnl fi
  725: PEEPHOLEFLAG="true"
  726: AC_SUBST(PEEPHOLEFLAG)
  727: 
  728: dnl copy commands for systems that don't have links
  729: AC_SUBST(LINK_KERNL)
  730: LINK_KERNL=""
  731: 
  732: #if test $host_os=dos
  733: #then
  734: #  echo Configuring for DOS!!!
  735: #  MAKE_EXE="coff2exe gforth"
  736: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  737: #fi
  738: 
  739: dnl the following macro produces a warning with autoconf-2.1
  740: AC_C_BIGENDIAN
  741: AC_SUBST(KERNEL)
  742: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  743: if test $ac_cv_c_bigendian != no; then
  744:   bytesex=b
  745:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  746: else
  747:   bytesex=l
  748:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  749: fi
  750: 
  751: #check how to do asm(".skip 16")
  752: #echo "CFLAGS=$CFLAGS"
  753: #echo "ac_link=$ac_link"
  754: AC_MSG_CHECKING([if and how we can waste code space])
  755: if test -z "$skipcode"; then
  756:     skipcode=no
  757:     CFLAGS_1="$CFLAGS"
  758:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  759:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  760:     do
  761: 	AC_TRY_RUN(
  762: [int foo(int,int,int);
  763: main()
  764: {
  765:   exit(foo(0,0,0)!=16);
  766: }
  767: int foo(int x, int y, int z)
  768: {
  769:   static void *labels[]={&&label1, &&label2};
  770:   if (x) {
  771:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  772:   label1:
  773:     asm("$i"); /* or ".space 16" or somesuch */
  774:   label2: ;
  775:   }
  776:   {
  777:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  778:   return labels[1]-labels[0];
  779:   }
  780: }]
  781: 	,skipcode=$i; break
  782: 	,,)
  783:     done
  784:     CFLAGS=$CFLAGS_1
  785: fi
  786: AC_MSG_RESULT($skipcode)
  787: if test "$skipcode" = no
  788: then 
  789:     if test -z $no_dynamic_default; then
  790: 	no_dynamic_default=1
  791: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  792:     fi
  793:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  794: else
  795:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  796: fi
  797: 
  798: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  799: #the point here is to get asm statements that look different to
  800: #gcc's "optimizer"
  801: if test -z "$asmcomment"; then
  802:     asmcomment=no
  803:     CFLAGS_1="$CFLAGS"
  804:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  805:     for i in '"# "' '"! "' '"; "'; do
  806: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  807:     done
  808:     CFLAGS=$CFLAGS_1
  809: fi
  810: AC_MSG_RESULT($asmcomment)
  811: if test "$asmcomment" != no
  812: then 
  813:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  814: fi
  815: 
  816: test "$no_dynamic_default" || no_dynamic_default=0
  817: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  818: 
  819: dnl Checks for programs.
  820: AC_PROG_LN_S
  821: AC_PROG_INSTALL
  822: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  823: 
  824: dnl MacOS X has a libtool that does something else
  825: AC_CHECK_PROGS(GNU_LIBTOOL,"glibtool --tag=CC" libtool)
  826: 
  827: if test -n "$GNU_LIBTOOL"; then
  828:   build_libcc_named=build-libcc-named
  829: else
  830:   build_libcc_named=""
  831: fi
  832: AC_SUBST(build_libcc_named)
  833: 
  834: 
  835: dnl Checks for library functions
  836: dnl This check is just for making later checks link with libm.
  837: dnl using sin here is no good idea since it is built-into gcc and typechecked
  838: AC_CHECK_LIB(m,asin)
  839: AC_CHECK_LIB(ltdl,lt_dlinit)
  840: #check for libffi 2.x
  841: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
  842: if test -z "$FFI_H_NAME"; then
  843:   AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
  844: fi
  845: AC_SUBST(FFI_H_NAME)
  846: AC_CHECK_LIB(ffi,ffi_call)
  847: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
  848: then
  849:   LIBFFIFLAG="true"
  850:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
  851: else
  852:   LIBFFIFLAG="false"
  853: fi
  854: #check for ffcall libraries
  855: #unfortunately, these four calls are separated out into a library each.
  856: AC_CHECK_LIB(avcall,__builtin_avcall)
  857: dnl AC_CHECK_LIB(callback,__vacall_r)
  858: dnl AC_CHECK_LIB(vacall,vacall)
  859: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
  860: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
  861:   FFCALLFLAG="true"
  862:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
  863: else
  864:   FFCALLFLAG="false"
  865: fi
  866: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
  867:   AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
  868: fi
  869: AC_SUBST(LIBFFIFLAG)
  870: AC_SUBST(FFCALLFLAG)
  871: AC_SUBST(LIBCC_BUILD_SRC)
  872: if test "$host_os" != "nextstep3"
  873: then
  874: 	AC_FUNC_MEMCMP
  875: fi
  876: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  877: AC_FUNC_FSEEKO
  878: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  879: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  880: AC_DECL_SYS_SIGLIST
  881: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  882: AC_CHECK_FUNCS(expm1 log1p)
  883: AC_REPLACE_FUNCS(rint ecvt)
  884: dnl No check for select, because our replacement is no good under
  885: dnl anything but DOS
  886: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
  887: AC_FUNC_FNMATCH
  888: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  889: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
  890: AM_PATH_LISPDIR
  891: 
  892: kernel_fi=kernl${vwordsize}${bytesex}.fi
  893: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  894: AC_SUBST(kernel_fi)
  895: AC_SUBST(include_fi)
  896: 
  897: #this breaks bindists
  898: #dnl replace srource directory by absolute value
  899: #if test $srcdir = "."; then srcdir=`pwd` 
  900: #fi
  901: 
  902: AC_SUBST(machine)
  903: AC_CONFIG_FILES([
  904: Makefile
  905: Makedist
  906: gforthmi
  907: vmgen
  908: machpc.fs
  909: envos.fs
  910: preforth
  911: engine/Makefile
  912: engine/libcc.h
  913: doc/version.texi
  914: build-ec ])
  915: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  916: chmod +x gforthmi
  917: chmod +x vmgen
  918: chmod +x build-ec
  919: chmod +x preforth
  920: test -d kernel||mkdir kernel
  921: if test $srcdir != "."; then ln -sf $srcdir/gforth.el .; fi
  922: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  923: $srcdir/mkinstalldirs arch/$machine
  924: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],
  925: [PACKAGE_VERSION=$PACKAGE_VERSION
  926:  machine=$machine])
  927: AC_OUTPUT
  928: 

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