File:  [gforth] / gforth / configure.in
Revision 1.232: download - view: text, annotated - select for diffs
Wed Jul 16 19:59:28 2008 UTC (11 years, 3 months ago) by anton
Branches: MAIN
CVS tags: HEAD
Updated dates in NEWS, configure.in
Updated ChangeLog

    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],[0.6.9-20080716],[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="July 16, 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: 
  112: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  113: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
  114: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  115: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  116: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  117: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  118: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  119: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  120: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  121: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  122: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
  123: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  124: AC_ARG_VAR(asmcomment, [assembler comment start string])
  125: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  126: 
  127: #set up feature test macros, so the tests get them right:
  128: # turn on all POSIX, SUSv3, and GNU features if available
  129: AC_GNU_SOURCE
  130: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  131: 
  132: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  133: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  134: dnl but not for _XOPEN_SOURCE)
  135: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  136: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  137: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  138: # turn on large file support with 64-bit off_t where available
  139: AC_SYS_LARGEFILE
  140: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  141: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  142: 
  143: #currently we force direct threading this way.  Eventually we should
  144: #setup in the arch and engine files right
  145: 
  146: AC_PROG_CC
  147: 
  148: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  149: 
  150: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
  151: test x$condbranch_opt = x && 
  152: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
  153:    condbranch_opt=0
  154: else
  155:    condbranch_opt=1
  156: fi
  157: AC_MSG_RESULT($condbranch_opt)
  158: AC_SUBST(condbranch_opt)
  159: 
  160: AC_SUBST(CC)
  161: AC_SUBST(GCC_LD)
  162: AC_SUBST(DEBUGFLAG)
  163: AC_SUBST(EC)
  164: AC_SUBST(EC_MODE)
  165: AC_SUBST(engine2)
  166: AC_SUBST(engine_fast2)
  167: AC_SUBST(no_dynamic)
  168: AC_SUBST(image_i)
  169: AC_SUBST(signals_o)
  170: 
  171: #this is used to disable some (not generally essential) part of the
  172: #Makefile that some makes don't grok.  It would be better to test for
  173: #this specific Makefile feature than the make version.
  174: AC_MSG_CHECKING(make type)
  175: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  176: GNUMAKE='#'
  177: test "$make_type" = "GNU Make" && GNUMAKE=''
  178: AC_MSG_RESULT($make_type)
  179: AC_SUBST(GNUMAKE)
  180: 
  181: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  182: OLDLDFLAGS=$LDFLAGS
  183: LDFLAGS="$LDFLAGS -export-dynamic"
  184: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  185: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  186: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  187: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  188: AC_MSG_RESULT($ac_export_dynamic)
  189: 
  190: #terminology is a bit unusual here: The host is the system on which
  191: #gforth will run; the system on which configure will run is the `build'
  192: AC_CANONICAL_HOST
  193: case "$host_cpu" in
  194: 	arm*)
  195: 		machine=arm
  196: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  197: 		if test x$platform = xnxt; then
  198: 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
  199: 		fi
  200: 		if test -z $arm_cacheflush; then
  201: 		   case "$host_os" in
  202: 		     *linux*)
  203: 			arm_cacheflush=arch/arm/cacheflush-linux 
  204: 			;;
  205: 		     *)   
  206: 			no_dynamic_default=1
  207: 			arm_cacheflush=arch/arm/cacheflush0
  208: 			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  209: 			;;
  210:                    esac
  211: 		fi
  212:                 AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
  213: 			       ../arch/arm/cacheflush-linux])
  214:                 AC_LIBOBJ(../$arm_cacheflush)
  215:                 #longer skipcodes lead to problems on ARM, and it uses
  216:                 #only 4-byte alignment anyway
  217: 		test "$skipcode" || skipcode="nop"
  218: 		;;
  219: 	hppa*)
  220: 		machine=hppa
  221: 		$srcdir/mkinstalldirs arch/hppa
  222: 		AC_LIBOBJ(../arch/hppa/cache)
  223: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  224: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  225: 		LIBS="$LIBS -L/lib/pa1.1/"
  226: 		;;
  227: 	sparc*)
  228: 		machine=sparc
  229: 		;;
  230: 	i386)
  231: 		machine=386
  232: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  233: 		;;
  234: 	i486)
  235: 		machine=386
  236: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  237: 		;;
  238: 	i*86)
  239: 		machine=386
  240: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  241: 		CFLAGS_1="$CFLAGS"
  242: 		CFLAGS="$CFLAGS -march=pentium"
  243: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  244: 		;;
  245: 	x86_64)
  246: 		case $CC
  247: 		in
  248: 		    *-m32*)
  249: 		    	machine=386
  250: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  251: 			CFLAGS_1="$CFLAGS"
  252: 			CFLAGS="$CFLAGS -march=athlon64"
  253: 			;;
  254: 		    *)
  255: 		    	machine=amd64
  256: 			;;
  257: 		esac
  258: 		;;
  259: 	ia64*)
  260: 		machine=ia64
  261: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  262: 		test "$skipcode" || skipcode="nop.i 0"
  263: 		#".skip 16" passes the test below,
  264: 		# but gives an assembler error in engine
  265: 		;;
  266:         m68k)
  267: 		machine=m68k
  268: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  269: 		if test "$host_os" = "nextstep3"
  270: 		then
  271: 			AC_LIBOBJ(termios)
  272: 		fi
  273: 		;;
  274: 	mips*)
  275: 		machine=mips
  276: 		#dynamic native code has the following problems on MIPS:
  277: 		#
  278: 		#1) J/JAL seems relocatable, but is are only
  279: 		#relocatable within a 256MB-segment.  While we try to
  280: 		#get the linker to arrange this, there is no guarantee
  281: 		#that this will succeed (and if the user uses a lot of
  282: 		#memory, it is likely to fail).
  283: 		#
  284: 		#2) The way we generate dynamic native code may
  285: 		#violate MIPS architectural restrictions (in
  286: 		#particular, the delay slots of LW, MFLO, etc.)
  287: 		#
  288: 		#Therefore we disable dynamic native code by default:
  289: 		if test -z $no_dynamic_default; then
  290: 		    no_dynamic_default=1
  291: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  292: 		fi
  293: 		;;
  294: 	alpha*)
  295: 		machine=alpha
  296: 		#full IEEE FP support for more uniformity across platforms:
  297: 		CFLAGS="$CFLAGS -mieee"
  298: 		;;
  299: 	power*|rs6000)
  300: 		machine=power
  301: 		$srcdir/mkinstalldirs arch/power
  302: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  303: 		#long long is broken on (at least) gcc-2.95.* for PPC
  304: 		test x$ac_cv_sizeof_long_long = x && 
  305: 		($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
  306: 		ac_cv_sizeof_long_long=0
  307:                 #The only architecture with enough callee-saved registers
  308:                 test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
  309:                 #or use 2, hardly slower at run-time and starts up faster
  310: 		;;
  311: 	*)
  312: 		AC_MSG_WARN([Using a generic machine description])
  313: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  314: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  315: 		machine=generic
  316: 		#I-cache flushing would be needed for dynamic code generation
  317: 		if test -z $no_dynamic_default; then
  318: 		    no_dynamic_default=1
  319: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  320: 		fi
  321: esac
  322: AC_SUBST(host)
  323: 
  324: MAKEINC=""
  325: 
  326: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  327: if test x$EC_MODE = xtrue
  328: then
  329: 	echo "Check for arch/$machine/$platform/gforth.ld"
  330: 	if test -f arch/$machine/$platform/gforth.ld
  331: 	then
  332: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  333: 		if test x$platform = xnxt; then
  334: 			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 $LIBS"
  335: 		fi
  336: 	fi
  337: 	if test -f arch/$machine/$platform/make.inc
  338: 	then
  339: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  340: 	fi
  341: fi
  342: AC_SUBST(MAKEINC)
  343: 
  344: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  345: 
  346: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
  347: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
  348: 		   [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
  349: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  350: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  351: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  352: 
  353: test x$GCC_PR15242_WORKAROUND = x ||
  354: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  355:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  356: 
  357: dnl the following macro produces a warning with autoconf-2.1
  358: AC_CHECK_SIZEOF(char *)
  359: case "$ac_cv_sizeof_char_p" in
  360:   2)
  361:     wordsize=16
  362:     ;;
  363:   4)
  364:     wordsize=32
  365:     ;;
  366:   8)
  367:     wordsize=64
  368:     ;;
  369: esac
  370: 
  371: AC_CHECK_SIZEOF(void *)
  372: case "$ac_cv_sizeof_void_p" in
  373:   2)
  374:     vwordsize=16
  375:     ;;
  376:   4)
  377:     vwordsize=32
  378:     ;;
  379:   8)
  380:     vwordsize=64
  381:     ;;
  382: esac
  383: 
  384: AC_CHECK_SIZEOF(char)
  385: AC_CHECK_SIZEOF(short)
  386: AC_CHECK_SIZEOF(int)
  387: AC_CHECK_SIZEOF(long)
  388: AC_CHECK_SIZEOF(long long)
  389: AC_CHECK_SIZEOF(intptr_t)
  390: AC_CHECK_SIZEOF(int128_t)
  391: AC_CHECK_SIZEOF(uint128_t)
  392: 
  393: AC_MSG_CHECKING([for a C type for cells])
  394: ac_cv_int_type_cell=none
  395: case "$ac_cv_sizeof_char_p" in
  396:   $ac_cv_sizeof_int)
  397:     ac_cv_int_type_cell=int
  398:     ;;
  399:   $ac_cv_sizeof_short)
  400:     ac_cv_int_type_cell=short
  401:     ;;
  402:   $ac_cv_sizeof_char)
  403:     ac_cv_int_type_cell=char
  404:     ;;
  405:   $ac_cv_sizeof_long)
  406:     ac_cv_int_type_cell=long
  407:     ;;
  408:   $ac_cv_sizeof_long_long)
  409:     ac_cv_int_type_cell="long long"
  410:     ;;
  411:   $ac_cv_sizeof_intptr_t)
  412:     ac_cv_int_type_cell="intptr_t"
  413:     ;;
  414: esac
  415: AC_MSG_RESULT($ac_cv_int_type_cell)
  416: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  417: 
  418: AC_MSG_CHECKING([for a C type for wydes])
  419: ac_cv_wyde_type_cell=none
  420: case 2 in
  421:   $ac_cv_sizeof_int)
  422:     ac_cv_wyde_type_cell=int
  423:     ;;
  424:   $ac_cv_sizeof_short)
  425:     ac_cv_wyde_type_cell=short
  426:     ;;
  427:   $ac_cv_sizeof_char)
  428:     ac_cv_wyde_type_cell=char
  429:     ;;
  430:   $ac_cv_sizeof_long)
  431:     ac_cv_wyde_type_cell=long
  432:     ;;
  433:   $ac_cv_sizeof_long_long)
  434:     ac_cv_wyde_type_cell="long long"
  435:     ;;
  436:   $ac_cv_sizeof_intptr_t)
  437:     ac_cv_wyde_type_cell="intptr_t"
  438:     ;;
  439: esac
  440: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  441: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  442: 
  443: AC_MSG_CHECKING([for a C type for tetrabytes])
  444: ac_cv_tetrabyte_type_cell=none
  445: case 4 in
  446:   $ac_cv_sizeof_int)
  447:     ac_cv_tetrabyte_type_cell=int
  448:     ;;
  449:   $ac_cv_sizeof_short)
  450:     ac_cv_tetrabyte_type_cell=short
  451:     ;;
  452:   $ac_cv_sizeof_char)
  453:     ac_cv_tetrabyte_type_cell=char
  454:     ;;
  455:   $ac_cv_sizeof_long)
  456:     ac_cv_tetrabyte_type_cell=long
  457:     ;;
  458:   $ac_cv_sizeof_long_long)
  459:     ac_cv_tetrabyte_type_cell="long long"
  460:     ;;
  461:   $ac_cv_sizeof_intptr_t)
  462:     ac_cv_tetrabyte_type_cell="intptr_t"
  463:     ;;
  464: esac
  465: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  466: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  467: 
  468: AC_MSG_CHECKING([for a C type for double-cells])
  469: ac_cv_int_type_double_cell=none
  470: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  471:   $ac_cv_sizeof_short)
  472:     ac_cv_int_type_double_cell=short
  473:     ;;
  474:   $ac_cv_sizeof_int)
  475:     ac_cv_int_type_double_cell=int
  476:     ;;
  477:   $ac_cv_sizeof_long)
  478:     ac_cv_int_type_double_cell=long
  479:     ;;
  480:   $ac_cv_sizeof_long_long)
  481:     ac_cv_int_type_double_cell="long long"
  482:     ;;
  483:   $ac_cv_sizeof_intptr_t)
  484:     ac_cv_int_type_double_cell="intptr_t"
  485:     ;;
  486:   $ac_cv_sizeof_int128_t)
  487:     ac_cv_int_type_double_cell="int128_t"
  488:     ;;
  489: esac
  490: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  491: 
  492: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  493: ac_cv_int_type_double_ucell=none
  494: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  495:   $ac_cv_sizeof_short)
  496:     ac_cv_int_type_double_ucell="unsigned short"
  497:     ;;
  498:   $ac_cv_sizeof_int)
  499:     ac_cv_int_type_double_ucell="unsigned int"
  500:     ;;
  501:   $ac_cv_sizeof_long)
  502:     ac_cv_int_type_double_ucell="unsigned long"
  503:     ;;
  504:   $ac_cv_sizeof_long_long)
  505:     ac_cv_int_type_double_ucell="unsigned long long"
  506:     ;;
  507:   $ac_cv_sizeof_intptr_t)
  508:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  509:     ;;
  510:   $ac_cv_sizeof_uint128_t)
  511:     ac_cv_int_type_double_ucell="uint128_t"
  512:     ;;
  513: esac
  514: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  515: 
  516: if test "$ac_cv_int_type_double_cell" != none && \
  517:    test "$ac_cv_int_type_double_ucell" != none
  518: then
  519: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  520: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  521:         OPTS=-ll
  522: else
  523:         if test "$ac_cv_sizeof_char_p" = 8; then
  524:            OPTS="-ll -noll"
  525:         else
  526:            OPTS=-noll
  527:         fi
  528: fi
  529: 
  530: if grep -q FORCE_REG arch/$machine/machine.h; then
  531:    OPTS2=''
  532:    for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
  533:    OPTS="$OPTS2 $OPTS"
  534: else
  535:   AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
  536: fi
  537: AC_SUBST(OPTS)
  538: 
  539: AC_TYPE_OFF_T
  540: AC_CHECK_SIZEOF(off_t)
  541: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  542: ac_small_off_t=$?
  543: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  544: 
  545: ENGINE_FLAGS=
  546: AC_SUBST(ENGINE_FLAGS)
  547: 
  548: # Try if GCC understands -fno-gcse
  549: 
  550: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  551: CFLAGS_1="$CFLAGS"
  552: CFLAGS="$CFLAGS -fno-gcse"
  553: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  554: CFLAGS="$CFLAGS_1"
  555: AC_MSG_RESULT($ac_nogcse)
  556: 
  557: # Try if GCC understands -fno-strict-aliasing
  558: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  559: CFLAGS_1="$CFLAGS"
  560: CFLAGS="$CFLAGS -fno-strict-aliasing"
  561: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  562: CFLAGS="$CFLAGS_1"
  563: AC_MSG_RESULT($ac_nostrictaliasing)
  564: 
  565: # Try if GCC understands -fno-crossjumping
  566: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  567: CFLAGS_1="$CFLAGS"
  568: CFLAGS="$CFLAGS -fno-crossjumping"
  569: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  570: CFLAGS="$CFLAGS_1"
  571: AC_MSG_RESULT($ac_nocrossjumping)
  572: 
  573: # Try if GCC understands -fno-reorder-blocks
  574: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  575: CFLAGS_1="$CFLAGS"
  576: CFLAGS="$CFLAGS -fno-reorder-blocks"
  577: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  578: CFLAGS="$CFLAGS_1"
  579: AC_MSG_RESULT($ac_noreorder_blocks)
  580: 
  581: # Try if GCC understands -falign-labels=1
  582: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  583: CFLAGS_1="$CFLAGS"
  584: CFLAGS="$CFLAGS -falign-labels=1"
  585: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  586: CFLAGS="$CFLAGS_1"
  587: AC_MSG_RESULT($ac_align_labels)
  588: 
  589: # Try if GCC understands -falign-loops=1
  590: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  591: CFLAGS_1="$CFLAGS"
  592: CFLAGS="$CFLAGS -falign-loops=1"
  593: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  594: CFLAGS="$CFLAGS_1"
  595: AC_MSG_RESULT($ac_align_loops)
  596: 
  597: # Try if GCC understands -falign-jumps=1
  598: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  599: CFLAGS_1="$CFLAGS"
  600: CFLAGS="$CFLAGS -falign-jumps=1"
  601: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  602: CFLAGS="$CFLAGS_1"
  603: AC_MSG_RESULT($ac_align_jumps)
  604: 
  605: # Try if GCC understands __attribute__((unused))
  606: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  607: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  608: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  609: AC_MSG_RESULT($MAYBE_UNUSED)
  610: 
  611: #try if m4 understands -s
  612: AC_MSG_CHECKING([how to invoke m4])
  613: if m4 -s /dev/null >/dev/null 2>&1; then
  614:  M4="m4 -s"
  615: else
  616:  M4=m4
  617: fi
  618: AC_SUBST(M4)
  619: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
  620: AC_MSG_RESULT($M4)
  621: 
  622: # Find installed Gforth
  623: AC_MSG_CHECKING([for gforth])
  624: GFORTH="`cd / && which gforth 2>/dev/null`"
  625: if test -z "$GFORTH"; then
  626:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  627: else
  628:   PREFORTH="$GFORTH -i `cd / && gforth --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  629: fi
  630: AC_SUBST(PREFORTH)
  631: AC_DEFINE_UNQUOTED(PREFORTH,"$PREFORTH",[How to invoke the pre-installed gforth])
  632: AC_MSG_RESULT($PREFORTH)
  633: 
  634: #echo "machine='$machine'"
  635: 
  636: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  637: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  638: AC_SUBST(asm_fs)
  639: 
  640: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  641: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  642: AC_SUBST(disasm_fs)
  643: 
  644: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  645: 
  646: case "$host_os" in
  647: 	*win32*)
  648: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  649: 		DIRSEP="\\\\"
  650: 		PATHSEP=";"
  651: 		#we want the builtins of command.com/cmd.exe and its
  652: 		# handling of .com files.
  653: 		#$COMSPEC contains the name of the Windows shell;
  654: 		# the ./ is there, because the bash does not recognize
  655: 		# absolute DOS filenames
  656: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  657: 		;;
  658: 	*darwin*)
  659: 		#Darwin uses some funny preprocessor by default; eliminate it:
  660: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  661: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  662: 		DIRSEP="/"
  663: 		PATHSEP=":"
  664: 		DEFAULTSYSTEMPREFIX=""
  665: 		;;
  666: 	*)
  667: 		DIRSEP="/"
  668: 		PATHSEP=":"
  669: 		DEFAULTSYSTEMPREFIX=""
  670: 		;;
  671: esac
  672: AC_SUBST(DIRSEP)
  673: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  674: AC_SUBST(PATHSEP)
  675: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  676: AC_SUBST(DEFAULTSYSTEMPREFIX)
  677: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  678: 
  679: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  680: #This magic incantation  seems to be completely undocumented.
  681: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  682: 
  683: dnl Now a little support for DOS/DJGCC
  684: AC_SUBST(GFORTH_EXE)
  685: GFORTH_EXE="true"
  686: AC_SUBST(GFORTHFAST_EXE)
  687: GFORTHFAST_EXE="true"
  688: AC_SUBST(GFORTHITC_EXE)
  689: GFORTHITC_EXE="true"
  690: AC_SUBST(GFORTHDITC_EXE)
  691: GFORTHDITC_EXE="true"
  692: 
  693: AC_SUBST(FORTHSIZES)
  694: 
  695: dnl if test "$PEEPHOLE" = "yes"
  696: dnl then
  697: dnl    PEEPHOLEFLAG="true"
  698: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  699: dnl else
  700: dnl    PEEPHOLEFLAG="false"
  701: dnl fi
  702: PEEPHOLEFLAG="true"
  703: AC_SUBST(PEEPHOLEFLAG)
  704: 
  705: dnl copy commands for systems that don't have links
  706: AC_SUBST(LINK_KERNL)
  707: LINK_KERNL=""
  708: 
  709: #if test $host_os=dos
  710: #then
  711: #  echo Configuring for DOS!!!
  712: #  MAKE_EXE="coff2exe gforth"
  713: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  714: #fi
  715: 
  716: dnl the following macro produces a warning with autoconf-2.1
  717: AC_C_BIGENDIAN
  718: AC_SUBST(KERNEL)
  719: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  720: if test $ac_cv_c_bigendian = yes; then
  721:   bytesex=b
  722:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  723: else
  724:   bytesex=l
  725:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  726: fi
  727: 
  728: #check how to do asm(".skip 16")
  729: #echo "CFLAGS=$CFLAGS"
  730: #echo "ac_link=$ac_link"
  731: AC_MSG_CHECKING([if and how we can waste code space])
  732: if test -z "$skipcode"; then
  733:     skipcode=no
  734:     CFLAGS_1="$CFLAGS"
  735:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  736:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  737:     do
  738: 	AC_TRY_RUN(
  739: [int foo(int,int,int);
  740: main()
  741: {
  742:   exit(foo(0,0,0)!=16);
  743: }
  744: int foo(int x, int y, int z)
  745: {
  746:   static void *labels[]={&&label1, &&label2};
  747:   if (x) {
  748:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  749:   label1:
  750:     asm("$i"); /* or ".space 16" or somesuch */
  751:   label2: ;
  752:   }
  753:   {
  754:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  755:   return labels[1]-labels[0];
  756:   }
  757: }]
  758: 	,skipcode=$i; break
  759: 	,,)
  760:     done
  761:     CFLAGS=$CFLAGS_1
  762: fi
  763: AC_MSG_RESULT($skipcode)
  764: if test "$skipcode" = no
  765: then 
  766:     if test -z $no_dynamic_default; then
  767: 	no_dynamic_default=1
  768: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  769:     fi
  770:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  771: else
  772:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  773: fi
  774: 
  775: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  776: #the point here is to get asm statements that look different to
  777: #gcc's "optimizer"
  778: if test -z "$asmcomment"; then
  779:     asmcomment=no
  780:     CFLAGS_1="$CFLAGS"
  781:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  782:     for i in '"# "' '"! "' '"; "'; do
  783: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  784:     done
  785:     CFLAGS=$CFLAGS_1
  786: fi
  787: AC_MSG_RESULT($asmcomment)
  788: if test "$asmcomment" != no
  789: then 
  790:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  791: fi
  792: 
  793: test "$no_dynamic_default" || no_dynamic_default=0
  794: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  795: 
  796: dnl Checks for programs.
  797: AC_PROG_LN_S
  798: AC_PROG_INSTALL
  799: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  800: 
  801: dnl MacOS X has a libtool that does something else
  802: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  803: 
  804: dnl Checks for library functions
  805: dnl This check is just for making later checks link with libm.
  806: dnl using sin here is no good idea since it is built-into gcc and typechecked
  807: AC_CHECK_LIB(m,asin)
  808: AC_CHECK_LIB(ltdl,lt_dlinit)
  809: dnl check for libffi 2.x
  810: AC_CHECK_LIB(ffi,ffi_call)
  811: if test $ac_cv_lib_ffi_ffi_call = yes
  812: then
  813: LIBFFIFLAG="true"
  814: FFCALLFLAG="false"
  815: OLDCALLFLAG="false"
  816: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  817: else
  818: dnl check for ffcall libraries
  819: dnl unfortunately, these four calls are separated out into a library each.
  820: AC_CHECK_LIB(avcall,__builtin_avcall)
  821: AC_CHECK_LIB(callback,__vacall_r)
  822: AC_CHECK_LIB(vacall,vacall)
  823: AC_CHECK_LIB(trampoline,alloc_trampoline)
  824: LIBFFIFLAG="false"
  825: FFCALLFLAG="false"
  826: OLDCALLFLAG="true"
  827: test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
  828: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  829: fi
  830: AC_SUBST(LIBFFIFLAG)
  831: AC_SUBST(FFCALLFLAG)
  832: AC_SUBST(OLDCALLFLAG)
  833: if test "$host_os" != "nextstep3"
  834: then
  835: 	AC_FUNC_MEMCMP
  836: fi
  837: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  838: AC_FUNC_FSEEKO
  839: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  840: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  841: AC_DECL_SYS_SIGLIST
  842: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  843: AC_CHECK_FUNCS(expm1 log1p)
  844: AC_REPLACE_FUNCS(rint ecvt)
  845: dnl No check for select, because our replacement is no good under
  846: dnl anything but DOS
  847: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  848: AC_FUNC_FNMATCH
  849: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  850: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  851: AM_PATH_LISPDIR
  852: 
  853: kernel_fi=kernl${vwordsize}${bytesex}.fi
  854: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  855: AC_SUBST(kernel_fi)
  856: AC_SUBST(include_fi)
  857: 
  858: #this breaks bindists
  859: #dnl replace srource directory by absolute value
  860: #if test $srcdir = "."; then srcdir=`pwd` 
  861: #fi
  862: 
  863: AC_SUBST(machine)
  864: AC_CONFIG_FILES([
  865: Makefile
  866: Makedist
  867: gforthmi
  868: vmgen
  869: machpc.fs
  870: envos.fs
  871: preforth
  872: engine/Makefile
  873: engine/libcc.h
  874: doc/version.texi
  875: build-ec ])
  876: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  877: chmod +x gforthmi
  878: chmod +x vmgen
  879: chmod +x build-ec
  880: chmod +x preforth
  881: test -d kernel||mkdir kernel
  882: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  883: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
  884: AC_OUTPUT
  885: 

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