File:  [gforth] / gforth / configure.in
Revision 1.198: download - view: text, annotated - select for diffs
Tue Dec 4 18:57:58 2007 UTC (11 years, 11 months ago) by anton
Branches: MAIN
CVS tags: HEAD
support different libtool names (based on configure.in)

    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 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 2
   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, write to the Free Software
   19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   20: 
   21: 
   22: dnl We use some automake macros here,
   23: dnl but don't use automake for creating Makefile.in
   24: AC_INIT([gforth],[0.6.9-20070604],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
   25: AC_PREREQ(2.54)
   26: #snapshots have numbers major.minor.release-YYYYMMDD
   27: #note that lexicographic ordering must be heeded.
   28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
   29: UPDATED="June 02, 2007"
   30: AC_SUBST(UPDATED)
   31: AC_CONFIG_HEADERS(engine/config.h)
   32: 
   33: #suppress the "-g -O2" default
   34: test "$CFLAGS" || CFLAGS=-O2
   35: 
   36: AC_ARG_ENABLE(force-reg,
   37: 	AC_HELP_STRING([--enable-force-reg],
   38: 		        [ Use explicit register declarations if they appear in
   39: 			  the machine.h file. This can cause a good speedup,
   40: 			  but also incorrect code with some gcc versions on
   41: 			  some processors (default disabled).]),
   42: 	,enable_force_reg=no)
   43: test "$enable_force_reg" = "no"||
   44:   AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)])
   45: 
   46: AC_ARG_ENABLE(force-ll,
   47: 	AC_HELP_STRING([--enable-force-ll],
   48: 		       [  Use explicit long long declarations if they appear in
   49: 			  the machine.h file. This can cause a good speedup,
   50: 			  but also incorrect code with some gcc versions on
   51: 			  some processors (default disabled).]),
   52: 	,enable_force_ll=no)
   53: test "$enable_force_ll" = "no"||
   54:   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
   55: 
   56: AC_ARG_ENABLE(force-cdiv,
   57: 	AC_HELP_STRING([--enable-force-cdiv],
   58: 		       [  Use the native C division - symmetric - instead of
   59: 		          floored division (default disabled).]),
   60: 	,enable_force_cdiv=no)
   61: test "$enable_force_cdiv" = "no"||
   62:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
   63: 
   64: AC_SUBST(PROFEXES)
   65: AC_SUBST(PROFOBJS)
   66: AC_ARG_ENABLE(prof,
   67: 	AC_HELP_STRING([--enable-prof],
   68: 			[ Build gforth-prof, which outputs frequently occuring
   69:                           sequences of primitives.]),
   70: 	,enable_prof=no)
   71: if test "$enable_prof" = "no"; then
   72:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
   73: fi
   74: 
   75: AC_ARG_WITH(debug,
   76: [  --with-debug		  specifies option -g to compile with debug info
   77:   --without-debug	  omits the -g switch and creates smaller images on
   78: 			  machines where "strip" has problems with gcc style
   79: 			  debugging informations.],
   80: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   81: 
   82: dnl PEEPHOLE="yes"
   83: dnl AC_ARG_WITH(peephole,
   84: dnl [  --with-peephole	Enable peephole optimization (default)
   85: dnl   --without-peephole	disables peephole optimization. Creates smaller,
   86: dnl 			but slower images.],
   87: dnl PEEPHOLE="$withval")
   88: 
   89: GCC_LD="\$(GCC)"
   90: EC_MODE="false"
   91: EC=""
   92: engine2="engine2.o"
   93: engine_fast2="engine-fast2.o"
   94: no_dynamic=""
   95: image_i=""
   96: signals_o="io.o signals.o"
   97: 
   98: AC_ARG_WITH(ec,
   99: 	AC_HELP_STRING([--with-ec=<arch>],
  100: 			[  Build gforth for systems without OS.]),
  101: [if test "$withval" = "no"; then
  102:   echo "defining hosted system"
  103: else
  104:   echo "defining standalone system (${withval})"
  105:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
  106:   EC_MODE="true"
  107:   EC="-ec"
  108:   engine2=""
  109:   engine_fast2=""
  110:   no_dynamic="-DNO_DYNAMIC"
  111:   image_i="image.i"
  112:   if test "$withval" != "yes"; then
  113:     signals_o="io-${withval}.o"
  114:   else
  115:     signals_o="io.o"
  116:   fi
  117:   GCC_PATH=$(which $CC)
  118:   LIB_PATH=${GCC_PATH%/*/*}
  119:   GCC_LD="\$(LD)"
  120:   platform=${withval}
  121: fi])
  122: 
  123: #variables mentioned in INSTALL
  124: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
  125: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  126: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  127: 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)])
  128: 
  129: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  130: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
  131: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  132: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  133: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  134: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  135: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  136: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  137: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
  138: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
  139: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  140: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  141: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
  142: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  143: AC_ARG_VAR(asmcomment, [assembler comment start string])
  144: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  145: 
  146: #set up feature test macros, so the tests get them right:
  147: # turn on all POSIX, SUSv3, and GNU features if available
  148: AC_GNU_SOURCE
  149: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  150: 
  151: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  152: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  153: dnl but not for _XOPEN_SOURCE)
  154: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  155: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  156: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  157: # turn on large file support with 64-bit off_t where available
  158: AC_SYS_LARGEFILE
  159: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  160: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  161: 
  162: #currently we force direct threading this way.  Eventually we should
  163: #setup in the arch and engine files right
  164: 
  165: AC_PROG_CC
  166: 
  167: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  168: 
  169: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
  170: test x$condbranch_opt = x && 
  171: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
  172:    condbranch_opt=0
  173: else
  174:    condbranch_opt=1
  175: fi
  176: AC_MSG_RESULT($condbranch_opt)
  177: AC_SUBST(condbranch_opt)
  178: 
  179: AC_SUBST(CC)
  180: AC_SUBST(GCC_LD)
  181: AC_SUBST(DEBUGFLAG)
  182: AC_SUBST(EC)
  183: AC_SUBST(EC_MODE)
  184: AC_SUBST(engine2)
  185: AC_SUBST(engine_fast2)
  186: AC_SUBST(no_dynamic)
  187: AC_SUBST(image_i)
  188: AC_SUBST(signals_o)
  189: 
  190: #this is used to disable some (not generally essential) part of the
  191: #Makefile that some makes don't grok.  It would be better to test for
  192: #this specific Makefile feature than the make version.
  193: AC_MSG_CHECKING(make type)
  194: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  195: GNUMAKE='#'
  196: test "$make_type" = "GNU Make" && GNUMAKE=''
  197: AC_MSG_RESULT($make_type)
  198: AC_SUBST(GNUMAKE)
  199: 
  200: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  201: OLDLDFLAGS=$LDFLAGS
  202: LDFLAGS="$LDFLAGS -export-dynamic"
  203: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  204: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  205: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  206: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  207: AC_MSG_RESULT($ac_export_dynamic)
  208: 
  209: #terminology is a bit unusual here: The host is the system on which
  210: #gforth will run; the system on which configure will run is the `build'
  211: AC_CANONICAL_HOST
  212: case "$host_cpu" in
  213: 	arm*)
  214: 		machine=arm
  215: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  216: 		if test x$platform = xnxt; then
  217: 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
  218: 		fi
  219: 		if test -z $arm_cacheflush; then
  220: 		    no_dynamic_default=1
  221:                     arm_cacheflush=arch/arm/cacheflush0
  222: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  223: 		fi
  224:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
  225:                 AC_LIBOBJ(../$arm_cacheflush)
  226:                 #longer skipcodes lead to problems on ARM, and it uses
  227:                 #only 4-byte alignment anyway
  228: 		test "$skipcode" || skipcode="nop"
  229: 		;;
  230: 	hppa*)
  231: 		machine=hppa
  232: 		$srcdir/mkinstalldirs arch/hppa
  233: 		AC_LIBOBJ(../arch/hppa/cache)
  234: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  235: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  236: 		LIBS="$LIBS -L/lib/pa1.1/"
  237: 		;;
  238: 	sparc*)
  239: 		machine=sparc
  240: 		;;
  241: 	i386)
  242: 		machine=386
  243: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  244: 		;;
  245: 	i486)
  246: 		machine=386
  247: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  248: 		;;
  249: 	i*86)
  250: 		machine=386
  251: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  252: 		CFLAGS_1="$CFLAGS"
  253: 		CFLAGS="$CFLAGS -march=pentium"
  254: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  255: 		;;
  256: 	x86_64)
  257: 		case $CC
  258: 		in
  259: 		    *-m32*)
  260: 		    	machine=386
  261: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  262: 			CFLAGS_1="$CFLAGS"
  263: 			CFLAGS="$CFLAGS -march=athlon64"
  264: 			;;
  265: 		    *)
  266: 		    	machine=amd64
  267: 			;;
  268: 		esac
  269: 		;;
  270: 	ia64*)
  271: 		machine=ia64
  272: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  273: 		test "$skipcode" || skipcode="nop.i 0"
  274: 		#".skip 16" passes the test below,
  275: 		# but gives an assembler error in engine
  276: 		;;
  277:         m68k)
  278: 		machine=m68k
  279: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  280: 		if test "$host_os" = "nextstep3"
  281: 		then
  282: 			AC_LIBOBJ(termios)
  283: 		fi
  284: 		;;
  285: 	mips*)
  286: 		machine=mips
  287: 		#dynamic native code has the following problems on MIPS:
  288: 		#
  289: 		#1) J/JAL seems relocatable, but is are only
  290: 		#relocatable within a 256MB-segment.  While we try to
  291: 		#get the linker to arrange this, there is no guarantee
  292: 		#that this will succeed (and if the user uses a lot of
  293: 		#memory, it is likely to fail).
  294: 		#
  295: 		#2) The way we generate dynamic native code may
  296: 		#violate MIPS architectural restrictions (in
  297: 		#particular, the delay slots of LW, MFLO, etc.)
  298: 		#
  299: 		#Therefore we disable dynamic native code by default:
  300: 		if test -z $no_dynamic_default; then
  301: 		    no_dynamic_default=1
  302: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  303: 		fi
  304: 		;;
  305: 	alpha*)
  306: 		machine=alpha
  307: 		#full IEEE FP support for more uniformity across platforms:
  308: 		CFLAGS="$CFLAGS -mieee"
  309: 		;;
  310: 	power*|rs6000)
  311: 		machine=power
  312: 		$srcdir/mkinstalldirs arch/power
  313: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  314: 		#long long is broken on (at least) gcc-2.95.* for PPC
  315: 		test x$ac_cv_sizeof_long_long = x && 
  316: 		($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
  317: 		ac_cv_sizeof_long_long=0
  318: 		;;
  319: 	*)
  320: 		AC_MSG_WARN([Using a generic machine description])
  321: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  322: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  323: 		machine=generic
  324: 		#I-cache flushing would be needed for dynamic code generation
  325: 		if test -z $no_dynamic_default; then
  326: 		    no_dynamic_default=1
  327: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  328: 		fi
  329: esac
  330: AC_SUBST(host)
  331: 
  332: MAKEINC=""
  333: 
  334: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  335: if test x$EC_MODE = xtrue
  336: then
  337: 	echo "Check for arch/$machine/$platform/gforth.ld"
  338: 	if test -f arch/$machine/$platform/gforth.ld
  339: 	then
  340: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  341: 		if test x$platform = xnxt; then
  342: 			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 $LIBS"
  343: 		fi
  344: 	fi
  345: 	if test -f arch/$machine/$platform/make.inc
  346: 	then
  347: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  348: 	fi
  349: fi
  350: AC_SUBST(MAKEINC)
  351: 
  352: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  353: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  354: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  355: 
  356: test x$GCC_PR15242_WORKAROUND = x ||
  357: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  358:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  359: 
  360: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
  361: dnl generation on gccs affected by PR15242])
  362: 
  363: 
  364: if test "${enable_force_ll+set}" = set; then
  365:    ac_includes_default="$ac_includes_default
  366: #include \"arch/generic/128bit.h\""
  367: fi
  368: 
  369: dnl the following macro produces a warning with autoconf-2.1
  370: AC_CHECK_SIZEOF(char *)
  371: case "$ac_cv_sizeof_char_p" in
  372:   2)
  373:     wordsize=16
  374:     ;;
  375:   4)
  376:     wordsize=32
  377:     ;;
  378:   8)
  379:     wordsize=64
  380:     ;;
  381: esac
  382: 
  383: AC_CHECK_SIZEOF(void *)
  384: case "$ac_cv_sizeof_void_p" in
  385:   2)
  386:     vwordsize=16
  387:     ;;
  388:   4)
  389:     vwordsize=32
  390:     ;;
  391:   8)
  392:     vwordsize=64
  393:     ;;
  394: esac
  395: 
  396: AC_CHECK_SIZEOF(char)
  397: AC_CHECK_SIZEOF(short)
  398: AC_CHECK_SIZEOF(int)
  399: AC_CHECK_SIZEOF(long)
  400: AC_CHECK_SIZEOF(long long)
  401: AC_CHECK_SIZEOF(intptr_t)
  402: AC_CHECK_SIZEOF(int128_t)
  403: AC_CHECK_SIZEOF(uint128_t)
  404: 
  405: AC_MSG_CHECKING([for a C type for cells])
  406: ac_cv_int_type_cell=none
  407: case "$ac_cv_sizeof_char_p" in
  408:   $ac_cv_sizeof_int)
  409:     ac_cv_int_type_cell=int
  410:     ;;
  411:   $ac_cv_sizeof_short)
  412:     ac_cv_int_type_cell=short
  413:     ;;
  414:   $ac_cv_sizeof_char)
  415:     ac_cv_int_type_cell=char
  416:     ;;
  417:   $ac_cv_sizeof_long)
  418:     ac_cv_int_type_cell=long
  419:     ;;
  420:   $ac_cv_sizeof_long_long)
  421:     ac_cv_int_type_cell="long long"
  422:     ;;
  423:   $ac_cv_sizeof_intptr_t)
  424:     ac_cv_int_type_cell="intptr_t"
  425:     ;;
  426:   $ac_cv_sizeof_int128_t)
  427:     ac_cv_int_type_cell="int128_t"
  428:     ;;
  429: esac
  430: AC_MSG_RESULT($ac_cv_int_type_cell)
  431: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  432: 
  433: AC_MSG_CHECKING([for a C type for wydes])
  434: ac_cv_wyde_type_cell=none
  435: case 2 in
  436:   $ac_cv_sizeof_int)
  437:     ac_cv_wyde_type_cell=int
  438:     ;;
  439:   $ac_cv_sizeof_short)
  440:     ac_cv_wyde_type_cell=short
  441:     ;;
  442:   $ac_cv_sizeof_char)
  443:     ac_cv_wyde_type_cell=char
  444:     ;;
  445:   $ac_cv_sizeof_long)
  446:     ac_cv_wyde_type_cell=long
  447:     ;;
  448:   $ac_cv_sizeof_long_long)
  449:     ac_cv_wyde_type_cell="long long"
  450:     ;;
  451:   $ac_cv_sizeof_intptr_t)
  452:     ac_cv_wyde_type_cell="intptr_t"
  453:     ;;
  454:   $ac_cv_sizeof_int128_t)
  455:     ac_cv_wyde_type_cell="int128_t"
  456:     ;;
  457: esac
  458: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  459: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  460: 
  461: AC_MSG_CHECKING([for a C type for tetrabytes])
  462: ac_cv_tetrabyte_type_cell=none
  463: case 4 in
  464:   $ac_cv_sizeof_int)
  465:     ac_cv_tetrabyte_type_cell=int
  466:     ;;
  467:   $ac_cv_sizeof_short)
  468:     ac_cv_tetrabyte_type_cell=short
  469:     ;;
  470:   $ac_cv_sizeof_char)
  471:     ac_cv_tetrabyte_type_cell=char
  472:     ;;
  473:   $ac_cv_sizeof_long)
  474:     ac_cv_tetrabyte_type_cell=long
  475:     ;;
  476:   $ac_cv_sizeof_long_long)
  477:     ac_cv_tetrabyte_type_cell="long long"
  478:     ;;
  479:   $ac_cv_sizeof_intptr_t)
  480:     ac_cv_tetrabyte_type_cell="intptr_t"
  481:     ;;
  482:   $ac_cv_sizeof_int128_t)
  483:     ac_cv_tetrabyte_type_cell="int128_t"
  484:     ;;
  485: esac
  486: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  487: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  488: 
  489: AC_MSG_CHECKING([for a C type for double-cells])
  490: ac_cv_int_type_double_cell=none
  491: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  492:   $ac_cv_sizeof_short)
  493:     ac_cv_int_type_double_cell=short
  494:     ;;
  495:   $ac_cv_sizeof_int)
  496:     ac_cv_int_type_double_cell=int
  497:     ;;
  498:   $ac_cv_sizeof_long)
  499:     ac_cv_int_type_double_cell=long
  500:     ;;
  501:   $ac_cv_sizeof_long_long)
  502:     ac_cv_int_type_double_cell="long long"
  503:     ;;
  504:   $ac_cv_sizeof_intptr_t)
  505:     ac_cv_int_type_double_cell="intptr_t"
  506:     ;;
  507:   $ac_cv_sizeof_int128_t)
  508:     ac_cv_int_type_double_cell="int128_t"
  509:     ;;
  510: esac
  511: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  512: 
  513: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  514: ac_cv_int_type_double_ucell=none
  515: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  516:   $ac_cv_sizeof_short)
  517:     ac_cv_int_type_double_ucell="unsigned short"
  518:     ;;
  519:   $ac_cv_sizeof_int)
  520:     ac_cv_int_type_double_ucell="unsigned int"
  521:     ;;
  522:   $ac_cv_sizeof_long)
  523:     ac_cv_int_type_double_ucell="unsigned long"
  524:     ;;
  525:   $ac_cv_sizeof_long_long)
  526:     ac_cv_int_type_double_ucell="unsigned long long"
  527:     ;;
  528:   $ac_cv_sizeof_intptr_t)
  529:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  530:     ;;
  531:   $ac_cv_sizeof_uint128_t)
  532:     ac_cv_int_type_double_ucell="uint128_t"
  533:     ;;
  534: esac
  535: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  536: 
  537: if test "$ac_cv_int_type_double_cell" = none || \
  538:    test "$ac_cv_int_type_double_ucell" = none
  539: then
  540: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  541: 	AC_LIBOBJ(dblsub)
  542: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  543: else
  544: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  545: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  546: fi
  547: 
  548: AC_TYPE_OFF_T
  549: AC_CHECK_SIZEOF(off_t)
  550: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  551: ac_small_off_t=$?
  552: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  553: 
  554: ENGINE_FLAGS=
  555: AC_SUBST(ENGINE_FLAGS)
  556: 
  557: # Try if GCC understands -fno-gcse
  558: 
  559: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  560: CFLAGS_1="$CFLAGS"
  561: CFLAGS="$CFLAGS -fno-gcse"
  562: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  563: CFLAGS="$CFLAGS_1"
  564: AC_MSG_RESULT($ac_nogcse)
  565: 
  566: # Try if GCC understands -fno-strict-aliasing
  567: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  568: CFLAGS_1="$CFLAGS"
  569: CFLAGS="$CFLAGS -fno-strict-aliasing"
  570: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  571: CFLAGS="$CFLAGS_1"
  572: AC_MSG_RESULT($ac_nostrictaliasing)
  573: 
  574: # Try if GCC understands -fno-crossjumping
  575: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  576: CFLAGS_1="$CFLAGS"
  577: CFLAGS="$CFLAGS -fno-crossjumping"
  578: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  579: CFLAGS="$CFLAGS_1"
  580: AC_MSG_RESULT($ac_nocrossjumping)
  581: 
  582: # Try if GCC understands -fno-reorder-blocks
  583: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  584: CFLAGS_1="$CFLAGS"
  585: CFLAGS="$CFLAGS -fno-reorder-blocks"
  586: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  587: CFLAGS="$CFLAGS_1"
  588: AC_MSG_RESULT($ac_noreorder_blocks)
  589: 
  590: # Try if GCC understands -falign-labels=1
  591: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  592: CFLAGS_1="$CFLAGS"
  593: CFLAGS="$CFLAGS -falign-labels=1"
  594: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  595: CFLAGS="$CFLAGS_1"
  596: AC_MSG_RESULT($ac_align_labels)
  597: 
  598: # Try if GCC understands -falign-loops=1
  599: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  600: CFLAGS_1="$CFLAGS"
  601: CFLAGS="$CFLAGS -falign-loops=1"
  602: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  603: CFLAGS="$CFLAGS_1"
  604: AC_MSG_RESULT($ac_align_loops)
  605: 
  606: # Try if GCC understands -falign-jumps=1
  607: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  608: CFLAGS_1="$CFLAGS"
  609: CFLAGS="$CFLAGS -falign-jumps=1"
  610: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  611: CFLAGS="$CFLAGS_1"
  612: AC_MSG_RESULT($ac_align_jumps)
  613: 
  614: # Try if GCC understands __attribute__((unused))
  615: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  616: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  617: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  618: AC_MSG_RESULT($MAYBE_UNUSED)
  619: 
  620: #try if m4 understands -s
  621: AC_MSG_CHECKING([how to invoke m4])
  622: if m4 -s /dev/null >/dev/null 2>&1; then
  623:  M4="m4 -s"
  624: else
  625:  M4=m4
  626: fi
  627: AC_SUBST(M4)
  628: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
  629: AC_MSG_RESULT($M4)
  630: 
  631: echo "machine='$machine'"
  632: 
  633: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  634: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  635: AC_SUBST(asm_fs)
  636: 
  637: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  638: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  639: AC_SUBST(disasm_fs)
  640: 
  641: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  642: 
  643: case "$host_os" in
  644: 	*win32*)
  645: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  646: 		DIRSEP="\\\\"
  647: 		PATHSEP=";"
  648: 		#we want the builtins of command.com/cmd.exe and its
  649: 		# handling of .com files.
  650: 		#$COMSPEC contains the name of the Windows shell;
  651: 		# the ./ is there, because the bash does not recognize
  652: 		# absolute DOS filenames
  653: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  654: 		;;
  655: 	*darwin*)
  656: 		#Darwin uses some funny preprocessor by default; eliminate it:
  657: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  658: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  659: 		DIRSEP="/"
  660: 		PATHSEP=":"
  661: 		DEFAULTSYSTEMPREFIX=""
  662: 		;;
  663: 	*)
  664: 		DIRSEP="/"
  665: 		PATHSEP=":"
  666: 		DEFAULTSYSTEMPREFIX=""
  667: 		;;
  668: esac
  669: AC_SUBST(DIRSEP)
  670: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  671: AC_SUBST(PATHSEP)
  672: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  673: AC_SUBST(DEFAULTSYSTEMPREFIX)
  674: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  675: 
  676: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  677: #This magic incantation  seems to be completely undocumented.
  678: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  679: 
  680: dnl Now a little support for DOS/DJGCC
  681: AC_SUBST(GFORTH_EXE)
  682: GFORTH_EXE=""
  683: AC_SUBST(GFORTHFAST_EXE)
  684: GFORTHFAST_EXE=""
  685: AC_SUBST(GFORTHITC_EXE)
  686: GFORTHITC_EXE=""
  687: AC_SUBST(GFORTHDITC_EXE)
  688: GFORTHDITC_EXE=""
  689: 
  690: AC_SUBST(FORTHSIZES)
  691: 
  692: dnl if test "$PEEPHOLE" = "yes"
  693: dnl then
  694: dnl    PEEPHOLEFLAG="true"
  695: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  696: dnl else
  697: dnl    PEEPHOLEFLAG="false"
  698: dnl fi
  699: PEEPHOLEFLAG="true"
  700: AC_SUBST(PEEPHOLEFLAG)
  701: 
  702: dnl copy commands for systems that don't have links
  703: AC_SUBST(LINK_KERNL)
  704: LINK_KERNL=""
  705: 
  706: #if test $host_os=dos
  707: #then
  708: #  echo Configuring for DOS!!!
  709: #  MAKE_EXE="coff2exe gforth"
  710: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  711: #fi
  712: 
  713: dnl the following macro produces a warning with autoconf-2.1
  714: AC_C_BIGENDIAN
  715: AC_SUBST(KERNEL)
  716: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  717: if test $ac_cv_c_bigendian = yes; then
  718:   bytesex=b
  719:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  720: else
  721:   bytesex=l
  722:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  723: fi
  724: 
  725: #check how to do asm(".skip 16")
  726: #echo "CFLAGS=$CFLAGS"
  727: #echo "ac_link=$ac_link"
  728: AC_MSG_CHECKING([if and how we can waste code space])
  729: if test -z "$skipcode"; then
  730:     skipcode=no
  731:     CFLAGS_1="$CFLAGS"
  732:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  733:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  734:     do
  735: 	AC_TRY_RUN(
  736: [int foo(int,int,int);
  737: main()
  738: {
  739:   exit(foo(0,0,0)!=16);
  740: }
  741: int foo(int x, int y, int z)
  742: {
  743:   static void *labels[]={&&label1, &&label2};
  744:   if (x) {
  745:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  746:   label1:
  747:     asm("$i"); /* or ".space 16" or somesuch */
  748:   label2: ;
  749:   }
  750:   {
  751:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  752:   return labels[1]-labels[0];
  753:   }
  754: }]
  755: 	,skipcode=$i; break
  756: 	,,)
  757:     done
  758:     CFLAGS=$CFLAGS_1
  759: fi
  760: AC_MSG_RESULT($skipcode)
  761: if test "$skipcode" = no
  762: then 
  763:     if test -z $no_dynamic_default; then
  764: 	no_dynamic_default=1
  765: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  766:     fi
  767:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  768: else
  769:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  770: fi
  771: 
  772: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  773: #the point here is to get asm statements that look different to
  774: #gcc's "optimizer"
  775: if test -z "$asmcomment"; then
  776:     asmcomment=no
  777:     CFLAGS_1="$CFLAGS"
  778:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  779:     for i in '"# "' '"! "' '"; "'; do
  780: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  781:     done
  782:     CFLAGS=$CFLAGS_1
  783: fi
  784: AC_MSG_RESULT($asmcomment)
  785: if test "$asmcomment" != no
  786: then 
  787:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  788: fi
  789: 
  790: test "$no_dynamic_default" || no_dynamic_default=0
  791: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  792: 
  793: dnl Checks for programs.
  794: AC_PROG_LN_S
  795: AC_PROG_INSTALL
  796: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  797: 
  798: dnl MacOS X has a libtool that does something else
  799: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  800: 
  801: dnl Checks for library functions
  802: dnl This check is just for making later checks link with libm.
  803: dnl using sin here is no good idea since it is built-into gcc and typechecked
  804: AC_CHECK_LIB(m,asin)
  805: AC_CHECK_LIB(ltdl,lt_dlinit)
  806: AC_CHECK_LIB(dl,dlopen)
  807: dnl check for libffi 2.x
  808: AC_CHECK_LIB(ffi,ffi_call)
  809: if test $ac_cv_lib_ffi_ffi_call = yes
  810: then
  811: LIBFFIFLAG="true"
  812: FFCALLFLAG="false"
  813: OLDCALLFLAG="false"
  814: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  815: else
  816: dnl check for ffcall libraries
  817: dnl unfortunately, these four calls are separated out into a library each.
  818: AC_CHECK_LIB(avcall,__builtin_avcall)
  819: AC_CHECK_LIB(callback,__vacall_r)
  820: AC_CHECK_LIB(vacall,vacall)
  821: AC_CHECK_LIB(trampoline,alloc_trampoline)
  822: LIBFFIFLAG="false"
  823: FFCALLFLAG="false"
  824: OLDCALLFLAG="true"
  825: 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])
  826: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  827: fi
  828: AC_SUBST(LIBFFIFLAG)
  829: AC_SUBST(FFCALLFLAG)
  830: AC_SUBST(OLDCALLFLAG)
  831: if test "$host_os" != "nextstep3"
  832: then
  833: 	AC_FUNC_MEMCMP
  834: fi
  835: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  836: AC_FUNC_FSEEKO
  837: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  838: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  839: AC_DECL_SYS_SIGLIST
  840: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  841: AC_CHECK_FUNCS(expm1 log1p)
  842: AC_REPLACE_FUNCS(rint ecvt)
  843: dnl No check for select, because our replacement is no good under
  844: dnl anything but DOS
  845: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  846: AC_FUNC_FNMATCH
  847: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  848: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  849: AM_PATH_LISPDIR
  850: 
  851: kernel_fi=kernl${vwordsize}${bytesex}.fi
  852: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  853: AC_SUBST(kernel_fi)
  854: AC_SUBST(include_fi)
  855: 
  856: #this breaks bindists
  857: #dnl replace srource directory by absolute value
  858: #if test $srcdir = "."; then srcdir=`pwd` 
  859: #fi
  860: 
  861: AC_SUBST(machine)
  862: AC_CONFIG_FILES([
  863: Makefile
  864: Makedist
  865: gforthmi
  866: vmgen
  867: machpc.fs
  868: envos.fs
  869: engine/Makefile
  870: engine/libcc.h
  871: doc/version.texi
  872: build-ec ])
  873: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  874: chmod +x gforthmi
  875: chmod +x vmgen
  876: chmod +x build-ec
  877: test -d kernel||mkdir kernel
  878: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  879: ln -s ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
  880: AC_OUTPUT
  881: 

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