File:  [gforth] / gforth / configure.in
Revision 1.255: download - view: text, annotated - select for diffs
Wed Oct 15 15:27:33 2008 UTC (11 years ago) by anton
Branches: MAIN
CVS tags: HEAD
Makefile bugfix
fixed some portability issues for MIPS
fixed some portability issues for old platforms

    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_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: 			arm_cacheflush=arch/arm/cacheflush-linux 
  208: 			;;
  209: 		     *)   
  210: 			no_dynamic_default=1
  211: 			arm_cacheflush=arch/arm/cacheflush0
  212: 			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  213: 			;;
  214:                    esac
  215: 		fi
  216:                 AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
  217: 			       ../arch/arm/cacheflush-linux])
  218:                 AC_LIBOBJ(../$arm_cacheflush)
  219:                 #longer skipcodes lead to problems on ARM, and it uses
  220:                 #only 4-byte alignment anyway
  221: 		test "$skipcode" || skipcode="nop"
  222: 		;;
  223: 	hppa*)
  224: 		machine=hppa
  225: 		$srcdir/mkinstalldirs arch/hppa
  226: 		AC_LIBOBJ(../arch/hppa/cache)
  227: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  228: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  229: 		LIBS="$LIBS -L/lib/pa1.1/"
  230: 		;;
  231: 	sparc*)
  232: 		machine=sparc
  233: 		;;
  234: 	i386)
  235: 		machine=386
  236: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  237: 		;;
  238: 	i486)
  239: 		machine=386
  240: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  241: 		;;
  242: 	i*86)
  243: 		machine=386
  244: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  245: 		CFLAGS_1="$CFLAGS"
  246: 		CFLAGS="$CFLAGS -march=pentium"
  247: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  248: 		;;
  249: 	x86_64)
  250: 		case $CC
  251: 		in
  252: 		    *-m32*)
  253: 		    	machine=386
  254: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  255: 			CFLAGS_1="$CFLAGS"
  256: 			CFLAGS="$CFLAGS -march=athlon64"
  257: 			;;
  258: 		    *)
  259: 		    	machine=amd64
  260: 			;;
  261: 		esac
  262: 		;;
  263: 	ia64*)
  264: 		machine=ia64
  265: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  266: 		test "$skipcode" || skipcode="nop.i 0"
  267: 		#".skip 16" passes the test below,
  268: 		# but gives an assembler error in engine
  269: 		;;
  270:         m68k)
  271: 		machine=m68k
  272: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  273: 		if test "$host_os" = "nextstep3"
  274: 		then
  275: 			AC_LIBOBJ(termios)
  276: 		fi
  277: 		;;
  278: 	mips*)
  279: 		machine=mips
  280: 		#dynamic native code has the following problems on MIPS:
  281: 		#
  282: 		#1) J/JAL seems relocatable, but is are only
  283: 		#relocatable within a 256MB-segment.  While we try to
  284: 		#get the linker to arrange this, there is no guarantee
  285: 		#that this will succeed (and if the user uses a lot of
  286: 		#memory, it is likely to fail).
  287: 		#
  288: 		#2) The way we generate dynamic native code may
  289: 		#violate MIPS architectural restrictions (in
  290: 		#particular, the delay slots of LW, MFLO, etc.)
  291: 		#
  292: 		#Therefore we disable dynamic native code by default:
  293: 		if test -z "$no_dynamic_default"; then
  294: 		    no_dynamic_default=1
  295: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  296: 		fi
  297: 		;;
  298: 	alpha*)
  299: 		machine=alpha
  300: 		#full IEEE FP support for more uniformity across platforms:
  301: 		CFLAGS="$CFLAGS -mieee"
  302: 		;;
  303: 	power*|rs6000)
  304: 		machine=power
  305: 		$srcdir/mkinstalldirs arch/power
  306: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  307: 		#long long is broken on (at least) gcc-2.95.* for PPC
  308: 		test x$ac_cv_sizeof_long_long = x && 
  309: 		($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
  310: 		ac_cv_sizeof_long_long=0
  311:                 #The only architecture with enough callee-saved registers
  312:                 test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
  313:                 #or use 2, hardly slower at run-time and starts up faster
  314: 		;;
  315: 	*)
  316: 		AC_MSG_WARN([Using a generic machine description])
  317: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  318: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  319: 		machine=generic
  320: 		#I-cache flushing would be needed for dynamic code generation
  321: 		if test -z $no_dynamic_default; then
  322: 		    no_dynamic_default=1
  323: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  324: 		fi
  325: esac
  326: AC_SUBST(host)
  327: 
  328: MAKEINC=""
  329: 
  330: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  331: if test x$EC_MODE = xtrue
  332: then
  333: 	echo "Check for arch/$machine/$platform/gforth.ld"
  334: 	if test -f arch/$machine/$platform/gforth.ld
  335: 	then
  336: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  337: 		if test x$platform = xnxt; then
  338: 			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 $LIBS"
  339: 		fi
  340: 	fi
  341: 	if test -f arch/$machine/$platform/make.inc
  342: 	then
  343: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  344: 	fi
  345: fi
  346: AC_SUBST(MAKEINC)
  347: 
  348: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  349: 
  350: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
  351: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
  352: 		   [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
  353: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  354: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  355: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  356: 
  357: test x$GCC_PR15242_WORKAROUND = x ||
  358: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  359:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  360: 
  361: dnl the following macro produces a warning with autoconf-2.1
  362: AC_CHECK_SIZEOF(char *)
  363: case "$ac_cv_sizeof_char_p" in
  364:   2)
  365:     wordsize=16
  366:     ;;
  367:   4)
  368:     wordsize=32
  369:     ;;
  370:   8)
  371:     wordsize=64
  372:     ;;
  373: esac
  374: 
  375: AC_CHECK_SIZEOF(void *)
  376: case "$ac_cv_sizeof_void_p" in
  377:   2)
  378:     vwordsize=16
  379:     ;;
  380:   4)
  381:     vwordsize=32
  382:     ;;
  383:   8)
  384:     vwordsize=64
  385:     ;;
  386: esac
  387: 
  388: AC_CHECK_SIZEOF(char)
  389: AC_CHECK_SIZEOF(short)
  390: AC_CHECK_SIZEOF(int)
  391: AC_CHECK_SIZEOF(long)
  392: AC_CHECK_SIZEOF(long long)
  393: AC_CHECK_SIZEOF(intptr_t)
  394: AC_CHECK_SIZEOF(int128_t)
  395: AC_CHECK_SIZEOF(uint128_t)
  396: 
  397: AC_MSG_CHECKING([for a C type for cells])
  398: ac_cv_int_type_cell=none
  399: case "$ac_cv_sizeof_char_p" in
  400:   $ac_cv_sizeof_int)
  401:     ac_cv_int_type_cell=int
  402:     ;;
  403:   $ac_cv_sizeof_short)
  404:     ac_cv_int_type_cell=short
  405:     ;;
  406:   $ac_cv_sizeof_char)
  407:     ac_cv_int_type_cell=char
  408:     ;;
  409:   $ac_cv_sizeof_long)
  410:     ac_cv_int_type_cell=long
  411:     ;;
  412:   $ac_cv_sizeof_long_long)
  413:     ac_cv_int_type_cell="long long"
  414:     ;;
  415:   $ac_cv_sizeof_intptr_t)
  416:     ac_cv_int_type_cell="intptr_t"
  417:     ;;
  418: esac
  419: AC_MSG_RESULT($ac_cv_int_type_cell)
  420: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  421: 
  422: AC_MSG_CHECKING([for a C type for wydes])
  423: ac_cv_wyde_type_cell=none
  424: case 2 in
  425:   $ac_cv_sizeof_int)
  426:     ac_cv_wyde_type_cell=int
  427:     ;;
  428:   $ac_cv_sizeof_short)
  429:     ac_cv_wyde_type_cell=short
  430:     ;;
  431:   $ac_cv_sizeof_char)
  432:     ac_cv_wyde_type_cell=char
  433:     ;;
  434:   $ac_cv_sizeof_long)
  435:     ac_cv_wyde_type_cell=long
  436:     ;;
  437:   $ac_cv_sizeof_long_long)
  438:     ac_cv_wyde_type_cell="long long"
  439:     ;;
  440:   $ac_cv_sizeof_intptr_t)
  441:     ac_cv_wyde_type_cell="intptr_t"
  442:     ;;
  443: esac
  444: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  445: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  446: 
  447: AC_MSG_CHECKING([for a C type for tetrabytes])
  448: ac_cv_tetrabyte_type_cell=none
  449: case 4 in
  450:   $ac_cv_sizeof_int)
  451:     ac_cv_tetrabyte_type_cell=int
  452:     ;;
  453:   $ac_cv_sizeof_short)
  454:     ac_cv_tetrabyte_type_cell=short
  455:     ;;
  456:   $ac_cv_sizeof_char)
  457:     ac_cv_tetrabyte_type_cell=char
  458:     ;;
  459:   $ac_cv_sizeof_long)
  460:     ac_cv_tetrabyte_type_cell=long
  461:     ;;
  462:   $ac_cv_sizeof_long_long)
  463:     ac_cv_tetrabyte_type_cell="long long"
  464:     ;;
  465:   $ac_cv_sizeof_intptr_t)
  466:     ac_cv_tetrabyte_type_cell="intptr_t"
  467:     ;;
  468: esac
  469: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  470: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  471: 
  472: AC_MSG_CHECKING([for a C type for double-cells])
  473: ac_cv_int_type_double_cell=none
  474: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  475:   $ac_cv_sizeof_short)
  476:     ac_cv_int_type_double_cell=short
  477:     ;;
  478:   $ac_cv_sizeof_int)
  479:     ac_cv_int_type_double_cell=int
  480:     ;;
  481:   $ac_cv_sizeof_long)
  482:     ac_cv_int_type_double_cell=long
  483:     ;;
  484:   $ac_cv_sizeof_long_long)
  485:     ac_cv_int_type_double_cell="long long"
  486:     ;;
  487:   $ac_cv_sizeof_intptr_t)
  488:     ac_cv_int_type_double_cell="intptr_t"
  489:     ;;
  490:   $ac_cv_sizeof_int128_t)
  491:     ac_cv_int_type_double_cell="int128_t"
  492:     ;;
  493: esac
  494: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  495: 
  496: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  497: ac_cv_int_type_double_ucell=none
  498: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  499:   $ac_cv_sizeof_short)
  500:     ac_cv_int_type_double_ucell="unsigned short"
  501:     ;;
  502:   $ac_cv_sizeof_int)
  503:     ac_cv_int_type_double_ucell="unsigned int"
  504:     ;;
  505:   $ac_cv_sizeof_long)
  506:     ac_cv_int_type_double_ucell="unsigned long"
  507:     ;;
  508:   $ac_cv_sizeof_long_long)
  509:     ac_cv_int_type_double_ucell="unsigned long long"
  510:     ;;
  511:   $ac_cv_sizeof_intptr_t)
  512:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  513:     ;;
  514:   $ac_cv_sizeof_uint128_t)
  515:     ac_cv_int_type_double_ucell="uint128_t"
  516:     ;;
  517: esac
  518: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  519: 
  520: if test "$ac_cv_int_type_double_cell" != none && \
  521:    test "$ac_cv_int_type_double_ucell" != none
  522: then
  523: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  524: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  525:         OPTS=-ll
  526: else
  527:         if test "$ac_cv_sizeof_char_p" = 8; then
  528:            OPTS="-ll -noll"
  529:         else
  530:            OPTS=-noll
  531:         fi
  532: fi
  533: 
  534: if grep FORCE_REG arch/$machine/machine.h >/dev/null; then
  535:    OPTS2=''
  536:    for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
  537:    OPTS="$OPTS2 $OPTS"
  538: else
  539:   AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
  540: fi
  541: AC_SUBST(OPTS)
  542: 
  543: AC_TYPE_OFF_T
  544: AC_CHECK_SIZEOF(off_t)
  545: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  546: ac_small_off_t=$?
  547: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  548: 
  549: ENGINE_FLAGS=
  550: AC_SUBST(ENGINE_FLAGS)
  551: 
  552: # Try if GCC understands -fno-gcse
  553: 
  554: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  555: CFLAGS_1="$CFLAGS"
  556: CFLAGS="$CFLAGS -fno-gcse"
  557: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  558: CFLAGS="$CFLAGS_1"
  559: AC_MSG_RESULT($ac_nogcse)
  560: 
  561: # Try if GCC understands -fno-strict-aliasing
  562: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  563: CFLAGS_1="$CFLAGS"
  564: CFLAGS="$CFLAGS -fno-strict-aliasing"
  565: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  566: CFLAGS="$CFLAGS_1"
  567: AC_MSG_RESULT($ac_nostrictaliasing)
  568: 
  569: # Try if GCC understands -fno-crossjumping
  570: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  571: CFLAGS_1="$CFLAGS"
  572: CFLAGS="$CFLAGS -fno-crossjumping"
  573: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  574: CFLAGS="$CFLAGS_1"
  575: AC_MSG_RESULT($ac_nocrossjumping)
  576: 
  577: # Try if GCC understands -fno-reorder-blocks
  578: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  579: CFLAGS_1="$CFLAGS"
  580: CFLAGS="$CFLAGS -fno-reorder-blocks"
  581: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  582: CFLAGS="$CFLAGS_1"
  583: AC_MSG_RESULT($ac_noreorder_blocks)
  584: 
  585: # Try if GCC understands -falign-labels=1
  586: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  587: CFLAGS_1="$CFLAGS"
  588: CFLAGS="$CFLAGS -falign-labels=1"
  589: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  590: CFLAGS="$CFLAGS_1"
  591: AC_MSG_RESULT($ac_align_labels)
  592: 
  593: # Try if GCC understands -falign-loops=1
  594: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  595: CFLAGS_1="$CFLAGS"
  596: CFLAGS="$CFLAGS -falign-loops=1"
  597: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  598: CFLAGS="$CFLAGS_1"
  599: AC_MSG_RESULT($ac_align_loops)
  600: 
  601: # Try if GCC understands -falign-jumps=1
  602: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  603: CFLAGS_1="$CFLAGS"
  604: CFLAGS="$CFLAGS -falign-jumps=1"
  605: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  606: CFLAGS="$CFLAGS_1"
  607: AC_MSG_RESULT($ac_align_jumps)
  608: 
  609: # Try if GCC understands __attribute__((unused))
  610: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  611: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  612: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  613: AC_MSG_RESULT($MAYBE_UNUSED)
  614: 
  615: #try if m4 understands -s
  616: AC_MSG_CHECKING([how to invoke m4])
  617: if m4 -s /dev/null >/dev/null 2>&1; then
  618:  M4="m4 -s"
  619: else
  620:  M4=m4
  621: fi
  622: AC_SUBST(M4)
  623: AC_MSG_RESULT($M4)
  624: 
  625: # Find installed Gforth
  626: AC_MSG_CHECKING([for gforth])
  627: GFORTH="`cd / && which gforth 2>/dev/null`"
  628: (cd / && $GFORTH -e bye >/dev/null 2>/dev/null) || GFORTH=""
  629: if test -z "$GFORTH"; then
  630:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  631:   kernel_anti_dependence=''
  632: else
  633:   PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  634:   kernel_anti_dependence='$(kernel_fi)'
  635: fi
  636: AC_SUBST(PREFORTH)
  637: AC_SUBST(kernel_anti_dependence)
  638: AC_MSG_RESULT($PREFORTH)
  639: 
  640: #echo "machine='$machine'"
  641: 
  642: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  643: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  644: AC_SUBST(asm_fs)
  645: 
  646: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  647: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  648: AC_SUBST(disasm_fs)
  649: 
  650: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  651: 
  652: case "$host_os" in
  653: 	*win32*)
  654: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  655: 		DIRSEP="\\\\"
  656: 		PATHSEP=";"
  657: 		#we want the builtins of command.com/cmd.exe and its
  658: 		# handling of .com files.
  659: 		#$COMSPEC contains the name of the Windows shell;
  660: 		# the ./ is there, because the bash does not recognize
  661: 		# absolute DOS filenames
  662: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  663: 		;;
  664: 	*darwin*)
  665: 		#Darwin uses some funny preprocessor by default; eliminate it:
  666: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  667: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  668: 		DIRSEP="/"
  669: 		PATHSEP=":"
  670: 		DEFAULTSYSTEMPREFIX=""
  671:                 #the following magic value was suggested by
  672:                 #http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
  673:                 AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
  674: 		;;
  675: 	*linux*)
  676: 		DIRSEP="/"
  677: 		PATHSEP=":"
  678: 		DEFAULTSYSTEMPREFIX=""
  679: 		if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
  680: 		   LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
  681: 		fi
  682: 		;;
  683: 	*)
  684: 		DIRSEP="/"
  685: 		PATHSEP=":"
  686: 		DEFAULTSYSTEMPREFIX=""
  687: 		;;
  688: esac
  689: AC_SUBST(DIRSEP)
  690: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  691: AC_SUBST(PATHSEP)
  692: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  693: AC_SUBST(DEFAULTSYSTEMPREFIX)
  694: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  695: if test -n "$LTDL_LIBRARY_PATH"; then
  696:    AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
  697: fi                                                                
  698: 
  699: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  700: #This magic incantation  seems to be completely undocumented.
  701: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  702: 
  703: dnl Now a little support for DOS/DJGCC
  704: AC_SUBST(GFORTH_EXE)
  705: GFORTH_EXE="true"
  706: AC_SUBST(GFORTHFAST_EXE)
  707: GFORTHFAST_EXE="true"
  708: AC_SUBST(GFORTHITC_EXE)
  709: GFORTHITC_EXE="true"
  710: AC_SUBST(GFORTHDITC_EXE)
  711: GFORTHDITC_EXE="true"
  712: 
  713: AC_SUBST(FORTHSIZES)
  714: 
  715: dnl if test "$PEEPHOLE" = "yes"
  716: dnl then
  717: dnl    PEEPHOLEFLAG="true"
  718: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  719: dnl else
  720: dnl    PEEPHOLEFLAG="false"
  721: dnl fi
  722: PEEPHOLEFLAG="true"
  723: AC_SUBST(PEEPHOLEFLAG)
  724: 
  725: dnl copy commands for systems that don't have links
  726: AC_SUBST(LINK_KERNL)
  727: LINK_KERNL=""
  728: 
  729: #if test $host_os=dos
  730: #then
  731: #  echo Configuring for DOS!!!
  732: #  MAKE_EXE="coff2exe gforth"
  733: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  734: #fi
  735: 
  736: dnl the following macro produces a warning with autoconf-2.1
  737: AC_C_BIGENDIAN
  738: AC_SUBST(KERNEL)
  739: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  740: if test $ac_cv_c_bigendian = yes; then
  741:   bytesex=b
  742:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  743: else
  744:   bytesex=l
  745:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  746: fi
  747: 
  748: #check how to do asm(".skip 16")
  749: #echo "CFLAGS=$CFLAGS"
  750: #echo "ac_link=$ac_link"
  751: AC_MSG_CHECKING([if and how we can waste code space])
  752: if test -z "$skipcode"; then
  753:     skipcode=no
  754:     CFLAGS_1="$CFLAGS"
  755:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  756:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  757:     do
  758: 	AC_TRY_RUN(
  759: [int foo(int,int,int);
  760: main()
  761: {
  762:   exit(foo(0,0,0)!=16);
  763: }
  764: int foo(int x, int y, int z)
  765: {
  766:   static void *labels[]={&&label1, &&label2};
  767:   if (x) {
  768:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  769:   label1:
  770:     asm("$i"); /* or ".space 16" or somesuch */
  771:   label2: ;
  772:   }
  773:   {
  774:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  775:   return labels[1]-labels[0];
  776:   }
  777: }]
  778: 	,skipcode=$i; break
  779: 	,,)
  780:     done
  781:     CFLAGS=$CFLAGS_1
  782: fi
  783: AC_MSG_RESULT($skipcode)
  784: if test "$skipcode" = no
  785: then 
  786:     if test -z $no_dynamic_default; then
  787: 	no_dynamic_default=1
  788: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  789:     fi
  790:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  791: else
  792:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  793: fi
  794: 
  795: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  796: #the point here is to get asm statements that look different to
  797: #gcc's "optimizer"
  798: if test -z "$asmcomment"; then
  799:     asmcomment=no
  800:     CFLAGS_1="$CFLAGS"
  801:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  802:     for i in '"# "' '"! "' '"; "'; do
  803: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  804:     done
  805:     CFLAGS=$CFLAGS_1
  806: fi
  807: AC_MSG_RESULT($asmcomment)
  808: if test "$asmcomment" != no
  809: then 
  810:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  811: fi
  812: 
  813: test "$no_dynamic_default" || no_dynamic_default=0
  814: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  815: 
  816: dnl Checks for programs.
  817: AC_PROG_LN_S
  818: AC_PROG_INSTALL
  819: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  820: 
  821: dnl MacOS X has a libtool that does something else
  822: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  823: 
  824: dnl Checks for library functions
  825: dnl This check is just for making later checks link with libm.
  826: dnl using sin here is no good idea since it is built-into gcc and typechecked
  827: AC_CHECK_LIB(m,asin)
  828: AC_CHECK_LIB(ltdl,lt_dlinit)
  829: #check for libffi 2.x
  830: AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
  831: if test -z "$FFI_H_NAME"; then
  832:   AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
  833: fi
  834: AC_SUBST(FFI_H_NAME)
  835: AC_CHECK_LIB(ffi,ffi_call)
  836: if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
  837: then
  838:   LIBFFIFLAG="true"
  839:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
  840: else
  841:   LIBFFIFLAG="false"
  842: fi
  843: #check for ffcall libraries
  844: #unfortunately, these four calls are separated out into a library each.
  845: AC_CHECK_LIB(avcall,__builtin_avcall)
  846: dnl AC_CHECK_LIB(callback,__vacall_r)
  847: dnl AC_CHECK_LIB(vacall,vacall)
  848: dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
  849: if test $ac_cv_lib_avcall___builtin_avcall = yes; then
  850:   FFCALLFLAG="true"
  851:   LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
  852: else
  853:   FFCALLFLAG="false"
  854: fi
  855: if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
  856:   AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
  857: fi
  858: AC_SUBST(LIBFFIFLAG)
  859: AC_SUBST(FFCALLFLAG)
  860: AC_SUBST(LIBCC_BUILD_SRC)
  861: if test "$host_os" != "nextstep3"
  862: then
  863: 	AC_FUNC_MEMCMP
  864: fi
  865: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  866: AC_FUNC_FSEEKO
  867: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  868: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  869: AC_DECL_SYS_SIGLIST
  870: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  871: AC_CHECK_FUNCS(expm1 log1p)
  872: AC_REPLACE_FUNCS(rint ecvt)
  873: dnl No check for select, because our replacement is no good under
  874: dnl anything but DOS
  875: AC_CHECK_HEADERS(sys/mman.h fnmatch.h alloca.h wchar.h)
  876: AC_FUNC_FNMATCH
  877: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  878: AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
  879: AM_PATH_LISPDIR
  880: 
  881: kernel_fi=kernl${vwordsize}${bytesex}.fi
  882: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  883: AC_SUBST(kernel_fi)
  884: AC_SUBST(include_fi)
  885: 
  886: #this breaks bindists
  887: #dnl replace srource directory by absolute value
  888: #if test $srcdir = "."; then srcdir=`pwd` 
  889: #fi
  890: 
  891: AC_SUBST(machine)
  892: AC_CONFIG_FILES([
  893: Makefile
  894: Makedist
  895: gforthmi
  896: vmgen
  897: machpc.fs
  898: envos.fs
  899: preforth
  900: engine/Makefile
  901: engine/libcc.h
  902: doc/version.texi
  903: build-ec ])
  904: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  905: chmod +x gforthmi
  906: chmod +x vmgen
  907: chmod +x build-ec
  908: chmod +x preforth
  909: test -d kernel||mkdir kernel
  910: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  911: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
  912: AC_OUTPUT
  913: 

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