File:  [gforth] / gforth / configure.in
Revision 1.250: download - view: text, annotated - select for diffs
Sun Oct 12 12:57:24 2008 UTC (11 years ago) by anton
Branches: MAIN
CVS tags: HEAD
LTDL_LIBRARY_PATH is now a configure variable
The computation of the default for LTDL_LIBRARY_PATH now uses ldconfig again.

    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],[0.6.9-20081006],[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 10, 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_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  122: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  123: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
  124: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  125: AC_ARG_VAR(asmcomment, [assembler comment start string])
  126: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  127: AC_ARG_VAR(LTDL_LIBRARY_PATH, [additional directories for libltdl (for some 64-bit platforms)])
  128: 
  129: #set up feature test macros, so the tests get them right:
  130: # turn on all POSIX, SUSv3, and GNU features if available
  131: AC_GNU_SOURCE
  132: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  133: 
  134: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  135: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  136: dnl but not for _XOPEN_SOURCE)
  137: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  138: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  139: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  140: # turn on large file support with 64-bit off_t where available
  141: AC_SYS_LARGEFILE
  142: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  143: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  144: 
  145: #currently we force direct threading this way.  Eventually we should
  146: #setup in the arch and engine files right
  147: 
  148: AC_PROG_CC
  149: 
  150: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  151: 
  152: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
  153: test x$condbranch_opt = x && 
  154: if ($CC -v 2>&1 |grep 'gcc version 3' >/dev/null); then
  155:    condbranch_opt=0
  156: else
  157:    condbranch_opt=1
  158: fi
  159: AC_MSG_RESULT($condbranch_opt)
  160: AC_SUBST(condbranch_opt)
  161: 
  162: AC_SUBST(CC)
  163: AC_SUBST(GCC_LD)
  164: AC_SUBST(DEBUGFLAG)
  165: AC_SUBST(EC)
  166: AC_SUBST(EC_MODE)
  167: AC_SUBST(engine2)
  168: AC_SUBST(engine_fast2)
  169: AC_SUBST(no_dynamic)
  170: AC_SUBST(image_i)
  171: AC_SUBST(signals_o)
  172: 
  173: #this is used to disable some (not generally essential) part of the
  174: #Makefile that some makes don't grok.  It would be better to test for
  175: #this specific Makefile feature than the make version.
  176: AC_MSG_CHECKING(make type)
  177: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  178: GNUMAKE='#'
  179: test "$make_type" = "GNU Make" && GNUMAKE=''
  180: AC_MSG_RESULT($make_type)
  181: AC_SUBST(GNUMAKE)
  182: 
  183: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  184: OLDLDFLAGS=$LDFLAGS
  185: LDFLAGS="$LDFLAGS -export-dynamic"
  186: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  187: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  188: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  189: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  190: AC_MSG_RESULT($ac_export_dynamic)
  191: 
  192: #terminology is a bit unusual here: The host is the system on which
  193: #gforth will run; the system on which configure will run is the `build'
  194: AC_CANONICAL_HOST
  195: case "$host_cpu" in
  196: 	arm*)
  197: 		machine=arm
  198: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  199: 		if test x$platform = xnxt; then
  200: 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
  201: 		fi
  202: 		if test -z $arm_cacheflush; then
  203: 		   case "$host_os" in
  204: 		     *linux*)
  205: 			arm_cacheflush=arch/arm/cacheflush-linux 
  206: 			;;
  207: 		     *)   
  208: 			no_dynamic_default=1
  209: 			arm_cacheflush=arch/arm/cacheflush0
  210: 			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  211: 			;;
  212:                    esac
  213: 		fi
  214:                 AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
  215: 			       ../arch/arm/cacheflush-linux])
  216:                 AC_LIBOBJ(../$arm_cacheflush)
  217:                 #longer skipcodes lead to problems on ARM, and it uses
  218:                 #only 4-byte alignment anyway
  219: 		test "$skipcode" || skipcode="nop"
  220: 		;;
  221: 	hppa*)
  222: 		machine=hppa
  223: 		$srcdir/mkinstalldirs arch/hppa
  224: 		AC_LIBOBJ(../arch/hppa/cache)
  225: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  226: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  227: 		LIBS="$LIBS -L/lib/pa1.1/"
  228: 		;;
  229: 	sparc*)
  230: 		machine=sparc
  231: 		;;
  232: 	i386)
  233: 		machine=386
  234: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  235: 		;;
  236: 	i486)
  237: 		machine=386
  238: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  239: 		;;
  240: 	i*86)
  241: 		machine=386
  242: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  243: 		CFLAGS_1="$CFLAGS"
  244: 		CFLAGS="$CFLAGS -march=pentium"
  245: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  246: 		;;
  247: 	x86_64)
  248: 		case $CC
  249: 		in
  250: 		    *-m32*)
  251: 		    	machine=386
  252: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  253: 			CFLAGS_1="$CFLAGS"
  254: 			CFLAGS="$CFLAGS -march=athlon64"
  255: 			;;
  256: 		    *)
  257: 		    	machine=amd64
  258: 			;;
  259: 		esac
  260: 		;;
  261: 	ia64*)
  262: 		machine=ia64
  263: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  264: 		test "$skipcode" || skipcode="nop.i 0"
  265: 		#".skip 16" passes the test below,
  266: 		# but gives an assembler error in engine
  267: 		;;
  268:         m68k)
  269: 		machine=m68k
  270: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  271: 		if test "$host_os" = "nextstep3"
  272: 		then
  273: 			AC_LIBOBJ(termios)
  274: 		fi
  275: 		;;
  276: 	mips*)
  277: 		machine=mips
  278: 		#dynamic native code has the following problems on MIPS:
  279: 		#
  280: 		#1) J/JAL seems relocatable, but is are only
  281: 		#relocatable within a 256MB-segment.  While we try to
  282: 		#get the linker to arrange this, there is no guarantee
  283: 		#that this will succeed (and if the user uses a lot of
  284: 		#memory, it is likely to fail).
  285: 		#
  286: 		#2) The way we generate dynamic native code may
  287: 		#violate MIPS architectural restrictions (in
  288: 		#particular, the delay slots of LW, MFLO, etc.)
  289: 		#
  290: 		#Therefore we disable dynamic native code by default:
  291: 		if test -z $no_dynamic_default; then
  292: 		    no_dynamic_default=1
  293: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  294: 		fi
  295: 		;;
  296: 	alpha*)
  297: 		machine=alpha
  298: 		#full IEEE FP support for more uniformity across platforms:
  299: 		CFLAGS="$CFLAGS -mieee"
  300: 		;;
  301: 	power*|rs6000)
  302: 		machine=power
  303: 		$srcdir/mkinstalldirs arch/power
  304: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  305: 		#long long is broken on (at least) gcc-2.95.* for PPC
  306: 		test x$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 "$ac_cv_sizeof_char_p" = 8; then
  526:            OPTS="-ll -noll"
  527:         else
  528:            OPTS=-noll
  529:         fi
  530: fi
  531: 
  532: if grep FORCE_REG arch/$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: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null) || GFORTH=""
  627: if test -z "$GFORTH"; then
  628:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  629:   kernel_anti_dependence=''
  630: else
  631:   PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  632:   kernel_anti_dependence='$(kernel_fi)'
  633: fi
  634: AC_SUBST(PREFORTH)
  635: AC_SUBST(kernel_anti_dependence)
  636: AC_MSG_RESULT($PREFORTH)
  637: 
  638: #echo "machine='$machine'"
  639: 
  640: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  641: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  642: AC_SUBST(asm_fs)
  643: 
  644: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  645: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  646: AC_SUBST(disasm_fs)
  647: 
  648: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  649: 
  650: case "$host_os" in
  651: 	*win32*)
  652: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  653: 		DIRSEP="\\\\"
  654: 		PATHSEP=";"
  655: 		#we want the builtins of command.com/cmd.exe and its
  656: 		# handling of .com files.
  657: 		#$COMSPEC contains the name of the Windows shell;
  658: 		# the ./ is there, because the bash does not recognize
  659: 		# absolute DOS filenames
  660: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  661: 		;;
  662: 	*darwin*)
  663: 		#Darwin uses some funny preprocessor by default; eliminate it:
  664: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  665: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  666: 		DIRSEP="/"
  667: 		PATHSEP=":"
  668: 		DEFAULTSYSTEMPREFIX=""
  669:                 #the following magic value was suggested by
  670:                 #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
  671:                 AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
  672: 		;;
  673: 	*linux*)
  674: 		DIRSEP="/"
  675: 		PATHSEP=":"
  676: 		DEFAULTSYSTEMPREFIX=""
  677: 		if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
  678: 		   LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '[\n]' [:] | sed -e 's/:$//'`
  679: 		fi
  680: 		;;
  681: 	*)
  682: 		DIRSEP="/"
  683: 		PATHSEP=":"
  684: 		DEFAULTSYSTEMPREFIX=""
  685: 		;;
  686: esac
  687: AC_SUBST(DIRSEP)
  688: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  689: AC_SUBST(PATHSEP)
  690: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  691: AC_SUBST(DEFAULTSYSTEMPREFIX)
  692: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  693: if test -n "$LTDL_LIBRARY_PATH"; then
  694:    AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
  695: fi                                                                
  696: 
  697: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  698: #This magic incantation  seems to be completely undocumented.
  699: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  700: 
  701: dnl Now a little support for DOS/DJGCC
  702: AC_SUBST(GFORTH_EXE)
  703: GFORTH_EXE="true"
  704: AC_SUBST(GFORTHFAST_EXE)
  705: GFORTHFAST_EXE="true"
  706: AC_SUBST(GFORTHITC_EXE)
  707: GFORTHITC_EXE="true"
  708: AC_SUBST(GFORTHDITC_EXE)
  709: GFORTHDITC_EXE="true"
  710: 
  711: AC_SUBST(FORTHSIZES)
  712: 
  713: dnl if test "$PEEPHOLE" = "yes"
  714: dnl then
  715: dnl    PEEPHOLEFLAG="true"
  716: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  717: dnl else
  718: dnl    PEEPHOLEFLAG="false"
  719: dnl fi
  720: PEEPHOLEFLAG="true"
  721: AC_SUBST(PEEPHOLEFLAG)
  722: 
  723: dnl copy commands for systems that don't have links
  724: AC_SUBST(LINK_KERNL)
  725: LINK_KERNL=""
  726: 
  727: #if test $host_os=dos
  728: #then
  729: #  echo Configuring for DOS!!!
  730: #  MAKE_EXE="coff2exe gforth"
  731: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  732: #fi
  733: 
  734: dnl the following macro produces a warning with autoconf-2.1
  735: AC_C_BIGENDIAN
  736: AC_SUBST(KERNEL)
  737: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  738: if test $ac_cv_c_bigendian = yes; then
  739:   bytesex=b
  740:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  741: else
  742:   bytesex=l
  743:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  744: fi
  745: 
  746: #check how to do asm(".skip 16")
  747: #echo "CFLAGS=$CFLAGS"
  748: #echo "ac_link=$ac_link"
  749: AC_MSG_CHECKING([if and how we can waste code space])
  750: if test -z "$skipcode"; then
  751:     skipcode=no
  752:     CFLAGS_1="$CFLAGS"
  753:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  754:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  755:     do
  756: 	AC_TRY_RUN(
  757: [int foo(int,int,int);
  758: main()
  759: {
  760:   exit(foo(0,0,0)!=16);
  761: }
  762: int foo(int x, int y, int z)
  763: {
  764:   static void *labels[]={&&label1, &&label2};
  765:   if (x) {
  766:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  767:   label1:
  768:     asm("$i"); /* or ".space 16" or somesuch */
  769:   label2: ;
  770:   }
  771:   {
  772:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  773:   return labels[1]-labels[0];
  774:   }
  775: }]
  776: 	,skipcode=$i; break
  777: 	,,)
  778:     done
  779:     CFLAGS=$CFLAGS_1
  780: fi
  781: AC_MSG_RESULT($skipcode)
  782: if test "$skipcode" = no
  783: then 
  784:     if test -z $no_dynamic_default; then
  785: 	no_dynamic_default=1
  786: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  787:     fi
  788:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  789: else
  790:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  791: fi
  792: 
  793: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  794: #the point here is to get asm statements that look different to
  795: #gcc's "optimizer"
  796: if test -z "$asmcomment"; then
  797:     asmcomment=no
  798:     CFLAGS_1="$CFLAGS"
  799:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  800:     for i in '"# "' '"! "' '"; "'; do
  801: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  802:     done
  803:     CFLAGS=$CFLAGS_1
  804: fi
  805: AC_MSG_RESULT($asmcomment)
  806: if test "$asmcomment" != no
  807: then 
  808:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  809: fi
  810: 
  811: test "$no_dynamic_default" || no_dynamic_default=0
  812: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  813: 
  814: dnl Checks for programs.
  815: AC_PROG_LN_S
  816: AC_PROG_INSTALL
  817: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  818: 
  819: dnl MacOS X has a libtool that does something else
  820: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  821: 
  822: dnl Checks for library functions
  823: dnl This check is just for making later checks link with libm.
  824: dnl using sin here is no good idea since it is built-into gcc and typechecked
  825: AC_CHECK_LIB(m,asin)
  826: AC_CHECK_LIB(ltdl,lt_dlinit)
  827: #check for libffi 2.x
  828: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
  829: if test -z "$FFI_H_NAME"; then
  830:   AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
  831: fi
  832: AC_SUBST(FFI_H_NAME)
  833: AC_CHECK_LIB(ffi,ffi_call)
  834: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
  835: then
  836:   LIBFFIFLAG="true"
  837:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
  838: else
  839:   LIBFFIFLAG="false"
  840: fi
  841: #check for ffcall libraries
  842: #unfortunately, these four calls are separated out into a library each.
  843: AC_CHECK_LIB(avcall,__builtin_avcall)
  844: dnl AC_CHECK_LIB(callback,__vacall_r)
  845: dnl AC_CHECK_LIB(vacall,vacall)
  846: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
  847: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
  848:   FFCALLFLAG="true"
  849:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
  850: else
  851:   FFCALLFLAG="false"
  852: fi
  853: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
  854:   AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
  855: fi
  856: AC_SUBST(LIBFFIFLAG)
  857: AC_SUBST(FFCALLFLAG)
  858: AC_SUBST(LIBCC_BUILD_SRC)
  859: if test "$host_os" != "nextstep3"
  860: then
  861: 	AC_FUNC_MEMCMP
  862: fi
  863: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  864: AC_FUNC_FSEEKO
  865: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  866: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  867: AC_DECL_SYS_SIGLIST
  868: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  869: AC_CHECK_FUNCS(expm1 log1p)
  870: AC_REPLACE_FUNCS(rint ecvt)
  871: dnl No check for select, because our replacement is no good under
  872: dnl anything but DOS
  873: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h)
  874: AC_FUNC_FNMATCH
  875: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  876: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  877: AM_PATH_LISPDIR
  878: 
  879: kernel_fi=kernl${vwordsize}${bytesex}.fi
  880: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  881: AC_SUBST(kernel_fi)
  882: AC_SUBST(include_fi)
  883: 
  884: #this breaks bindists
  885: #dnl replace srource directory by absolute value
  886: #if test $srcdir = "."; then srcdir=`pwd` 
  887: #fi
  888: 
  889: AC_SUBST(machine)
  890: AC_CONFIG_FILES([
  891: Makefile
  892: Makedist
  893: gforthmi
  894: vmgen
  895: machpc.fs
  896: envos.fs
  897: preforth
  898: engine/Makefile
  899: engine/libcc.h
  900: doc/version.texi
  901: build-ec ])
  902: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  903: chmod +x gforthmi
  904: chmod +x vmgen
  905: chmod +x build-ec
  906: chmod +x preforth
  907: test -d kernel||mkdir kernel
  908: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  909: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
  910: AC_OUTPUT
  911: 

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