File:  [gforth] / gforth / configure.in
Revision 1.180: download - view: text, annotated - select for diffs
Sun Apr 1 13:31:26 2007 UTC (12 years, 6 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added cygwin define

    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],[0.6.2-20060709],[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="April 09, 2006"
   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="$withval")
   88: 
   89: AC_ARG_ENABLE(ec,
   90: 	AC_HELP_STRING([--enable-ec],
   91: 			[  Build gforth for systems without OS.]),
   92: 	,enable_ec=no)
   93: if test "$enable_ec" = "yes"; then
   94:   echo "defining standalone system"
   95:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
   96:   EC_MODE="true"
   97:   EC="-ec"
   98:   engine2=""
   99:   engine_fast2=""
  100:   no_dynamic="-DNO_DYNAMIC"
  101:   image_i="image.i"
  102:   signals_o=""
  103: else
  104:   echo "defining hosted system"
  105:   EC_MODE="false"
  106:   EC=""
  107:   engine2="engine2.o"
  108:   engine_fast2="engine-fast2.o"
  109:   no_dynamic=""
  110:   image_i=""
  111:   signals_o="signals.o"
  112: fi
  113: 
  114: #variables mentioned in INSTALL
  115: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
  116: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  117: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  118: 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)])
  119: 
  120: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  121: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  122: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  123: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  124: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  125: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  126: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  127: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
  128: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
  129: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  130: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  131: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  132: AC_ARG_VAR(asmcomment, [assembler comment start string])
  133: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  134: 
  135: #set up feature test macros, so the tests get them right:
  136: # turn on all POSIX, SUSv3, and GNU features if available
  137: AC_GNU_SOURCE
  138: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  139: 
  140: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  141: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  142: dnl but not for _XOPEN_SOURCE)
  143: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  144: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  145: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  146: # turn on large file support with 64-bit off_t where available
  147: AC_SYS_LARGEFILE
  148: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  149: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  150: 
  151: #currently we force direct threading this way.  Eventually we should
  152: #setup in the arch and engine files right
  153: 
  154: AC_PROG_CC
  155: 
  156: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  157: 
  158: AC_SUBST(CC)
  159: AC_SUBST(DEBUGFLAG)
  160: AC_SUBST(EC)
  161: AC_SUBST(EC_MODE)
  162: AC_SUBST(engine2)
  163: AC_SUBST(engine_fast2)
  164: AC_SUBST(no_dynamic)
  165: AC_SUBST(image_i)
  166: AC_SUBST(signals_o)
  167: 
  168: #this is used to disable some (not generally essential) part of the
  169: #Makefile that some makes don't grok.  It would be better to test for
  170: #this specific Makefile feature than the make version.
  171: AC_MSG_CHECKING(make type)
  172: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  173: GNUMAKE='#'
  174: test "$make_type" = "GNU Make" && GNUMAKE=''
  175: AC_MSG_RESULT($make_type)
  176: AC_SUBST(GNUMAKE)
  177: 
  178: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  179: OLDLDFLAGS=$LDFLAGS
  180: LDFLAGS="$LDFLAGS -export-dynamic"
  181: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  182: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  183: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  184: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  185: AC_MSG_RESULT($ac_export_dynamic)
  186: 
  187: #terminology is a bit unusual here: The host is the system on which
  188: #gforth will run; the system on which configure will run is the `build'
  189: AC_CANONICAL_HOST
  190: case "$host_cpu" in
  191: 	arm*)
  192: 		machine=arm
  193: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  194: 		if test -z $arm_cacheflush; then
  195: 		    no_dynamic_default=1
  196:                     arm_cacheflush=arch/arm/cacheflush0
  197: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  198: 		fi
  199:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
  200:                 AC_LIBOBJ(../$arm_cacheflush)
  201:                 #longer skipcodes lead to problems on ARM, and it uses
  202:                 #only 4-byte alignment anyway
  203: 		test "$skipcode" || skipcode="nop"
  204: 		;;
  205: 	hppa*)
  206: 		machine=hppa
  207: 		$srcdir/mkinstalldirs arch/hppa
  208: 		AC_LIBOBJ(../arch/hppa/cache)
  209: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  210: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  211: 		LIBS="$LIBS -L/lib/pa1.1/"
  212: 		;;
  213: 	sparc*)
  214: 		machine=sparc
  215: 		;;
  216: 	i386)
  217: 		machine=386
  218: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  219: 		;;
  220: 	i486)
  221: 		machine=386
  222: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
  223: 		;;
  224: 	i*86)
  225: 		machine=386
  226: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  227: 		CFLAGS_1="$CFLAGS"
  228: 		CFLAGS="$CFLAGS -march=pentium"
  229: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  230: 		;;
  231: 	x86_64)
  232: 		machine=amd64
  233: 		;;
  234: 	ia64*)
  235: 		machine=ia64
  236: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  237: 		test "$skipcode" || skipcode="nop.i 0"
  238: 		#".skip 16" passes the test below,
  239: 		# but gives an assembler error in engine
  240: 		;;
  241:         m68k)
  242: 		machine=m68k
  243: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  244: 		if test "$host_os" = "nextstep3"
  245: 		then
  246: 			AC_LIBOBJ(termios)
  247: 		fi
  248: 		;;
  249: 	mips*)
  250: 		machine=mips
  251: 		#dynamic native code has the following problems on MIPS:
  252: 		#
  253: 		#1) J/JAL seems relocatable, but is are only
  254: 		#relocatable within a 256MB-segment.  While we try to
  255: 		#get the linker to arrange this, there is no guarantee
  256: 		#that this will succeed (and if the user uses a lot of
  257: 		#memory, it is likely to fail).
  258: 		#
  259: 		#2) The way we generate dynamic native code may
  260: 		#violate MIPS architectural restrictions (in
  261: 		#particular, the delay slots of LW, MFLO, etc.)
  262: 		#
  263: 		#Therefore we disable dynamic native code by default:
  264: 		if test -z $no_dynamic_default; then
  265: 		    no_dynamic_default=1
  266: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  267: 		fi
  268: 		;;
  269: 	alpha*)
  270: 		machine=alpha
  271: 		#full IEEE FP support for more uniformity across platforms:
  272: 		CFLAGS="$CFLAGS -mieee"
  273: 		;;
  274: 	power*|rs6000)
  275: 		machine=power
  276: 		$srcdir/mkinstalldirs arch/power
  277: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  278: 		#long long is broken on (at least) gcc-2.95.* for PPC
  279: 		test x$ac_cv_sizeof_long_long = x && 
  280: 		($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
  281: 		ac_cv_sizeof_long_long=0
  282: 		;;
  283: 	*)
  284: 		AC_MSG_WARN([Using a generic machine description])
  285: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  286: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  287: 		machine=generic
  288: 		#I-cache flushing would be needed for dynamic code generation
  289: 		if test -z $no_dynamic_default; then
  290: 		    no_dynamic_default=1
  291: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  292: 		fi
  293: esac
  294: AC_SUBST(host)
  295: 
  296: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  297: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  298: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  299: 
  300: test x$GCC_PR15242_WORKAROUND = x ||
  301: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  302:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  303: 
  304: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
  305: dnl generation on gccs affected by PR15242])
  306: 
  307: 
  308: if test "${enable_force_ll+set}" = set; then
  309:    ac_includes_default="$ac_includes_default
  310: #include \"arch/generic/128bit.h\""
  311: fi
  312: 
  313: dnl the following macro produces a warning with autoconf-2.1
  314: AC_CHECK_SIZEOF(char *)
  315: case "$ac_cv_sizeof_char_p" in
  316:   2)
  317:     wordsize=16
  318:     ;;
  319:   4)
  320:     wordsize=32
  321:     ;;
  322:   8)
  323:     wordsize=64
  324:     ;;
  325: esac
  326: 
  327: AC_CHECK_SIZEOF(char)
  328: AC_CHECK_SIZEOF(short)
  329: AC_CHECK_SIZEOF(int)
  330: AC_CHECK_SIZEOF(long)
  331: AC_CHECK_SIZEOF(long long)
  332: AC_CHECK_SIZEOF(intptr_t)
  333: AC_CHECK_SIZEOF(int128_t)
  334: AC_CHECK_SIZEOF(uint128_t)
  335: 
  336: AC_MSG_CHECKING([for a C type for cells])
  337: ac_cv_int_type_cell=none
  338: case "$ac_cv_sizeof_char_p" in
  339:   $ac_cv_sizeof_int)
  340:     ac_cv_int_type_cell=int
  341:     ;;
  342:   $ac_cv_sizeof_short)
  343:     ac_cv_int_type_cell=short
  344:     ;;
  345:   $ac_cv_sizeof_char)
  346:     ac_cv_int_type_cell=char
  347:     ;;
  348:   $ac_cv_sizeof_long)
  349:     ac_cv_int_type_cell=long
  350:     ;;
  351:   $ac_cv_sizeof_long_long)
  352:     ac_cv_int_type_cell="long long"
  353:     ;;
  354:   $ac_cv_sizeof_intptr_t)
  355:     ac_cv_int_type_cell="intptr_t"
  356:     ;;
  357:   $ac_cv_sizeof_int128_t)
  358:     ac_cv_int_type_cell="int128_t"
  359:     ;;
  360: esac
  361: AC_MSG_RESULT($ac_cv_int_type_cell)
  362: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  363: 
  364: AC_MSG_CHECKING([for a C type for wydes])
  365: ac_cv_wyde_type_cell=none
  366: case 2 in
  367:   $ac_cv_sizeof_int)
  368:     ac_cv_wyde_type_cell=int
  369:     ;;
  370:   $ac_cv_sizeof_short)
  371:     ac_cv_wyde_type_cell=short
  372:     ;;
  373:   $ac_cv_sizeof_char)
  374:     ac_cv_wyde_type_cell=char
  375:     ;;
  376:   $ac_cv_sizeof_long)
  377:     ac_cv_wyde_type_cell=long
  378:     ;;
  379:   $ac_cv_sizeof_long_long)
  380:     ac_cv_wyde_type_cell="long long"
  381:     ;;
  382:   $ac_cv_sizeof_intptr_t)
  383:     ac_cv_wyde_type_cell="intptr_t"
  384:     ;;
  385:   $ac_cv_sizeof_int128_t)
  386:     ac_cv_wyde_type_cell="int128_t"
  387:     ;;
  388: esac
  389: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  390: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  391: 
  392: AC_MSG_CHECKING([for a C type for tetrabytes])
  393: ac_cv_tetrabyte_type_cell=none
  394: case 4 in
  395:   $ac_cv_sizeof_int)
  396:     ac_cv_tetrabyte_type_cell=int
  397:     ;;
  398:   $ac_cv_sizeof_short)
  399:     ac_cv_tetrabyte_type_cell=short
  400:     ;;
  401:   $ac_cv_sizeof_char)
  402:     ac_cv_tetrabyte_type_cell=char
  403:     ;;
  404:   $ac_cv_sizeof_long)
  405:     ac_cv_tetrabyte_type_cell=long
  406:     ;;
  407:   $ac_cv_sizeof_long_long)
  408:     ac_cv_tetrabyte_type_cell="long long"
  409:     ;;
  410:   $ac_cv_sizeof_intptr_t)
  411:     ac_cv_tetrabyte_type_cell="intptr_t"
  412:     ;;
  413:   $ac_cv_sizeof_int128_t)
  414:     ac_cv_tetrabyte_type_cell="int128_t"
  415:     ;;
  416: esac
  417: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  418: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  419: 
  420: AC_MSG_CHECKING([for a C type for double-cells])
  421: ac_cv_int_type_double_cell=none
  422: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  423:   $ac_cv_sizeof_short)
  424:     ac_cv_int_type_double_cell=short
  425:     ;;
  426:   $ac_cv_sizeof_int)
  427:     ac_cv_int_type_double_cell=int
  428:     ;;
  429:   $ac_cv_sizeof_long)
  430:     ac_cv_int_type_double_cell=long
  431:     ;;
  432:   $ac_cv_sizeof_long_long)
  433:     ac_cv_int_type_double_cell="long long"
  434:     ;;
  435:   $ac_cv_sizeof_intptr_t)
  436:     ac_cv_int_type_double_cell="intptr_t"
  437:     ;;
  438:   $ac_cv_sizeof_int128_t)
  439:     ac_cv_int_type_double_cell="int128_t"
  440:     ;;
  441: esac
  442: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  443: 
  444: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  445: ac_cv_int_type_double_ucell=none
  446: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  447:   $ac_cv_sizeof_short)
  448:     ac_cv_int_type_double_ucell="unsigned short"
  449:     ;;
  450:   $ac_cv_sizeof_int)
  451:     ac_cv_int_type_double_ucell="unsigned int"
  452:     ;;
  453:   $ac_cv_sizeof_long)
  454:     ac_cv_int_type_double_ucell="unsigned long"
  455:     ;;
  456:   $ac_cv_sizeof_long_long)
  457:     ac_cv_int_type_double_ucell="unsigned long long"
  458:     ;;
  459:   $ac_cv_sizeof_intptr_t)
  460:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  461:     ;;
  462:   $ac_cv_sizeof_uint128_t)
  463:     ac_cv_int_type_double_ucell="uint128_t"
  464:     ;;
  465: esac
  466: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  467: 
  468: if test "$ac_cv_int_type_double_cell" = none || \
  469:    test "$ac_cv_int_type_double_ucell" = none
  470: then
  471: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  472: 	AC_LIBOBJ(dblsub)
  473: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  474: else
  475: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  476: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  477: fi
  478: 
  479: AC_TYPE_OFF_T
  480: AC_CHECK_SIZEOF(off_t)
  481: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  482: ac_small_off_t=$?
  483: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  484: 
  485: ENGINE_FLAGS=
  486: AC_SUBST(ENGINE_FLAGS)
  487: 
  488: # Try if GCC understands -fno-gcse
  489: 
  490: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  491: CFLAGS_1="$CFLAGS"
  492: CFLAGS="$CFLAGS -fno-gcse"
  493: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  494: CFLAGS="$CFLAGS_1"
  495: AC_MSG_RESULT($ac_nogcse)
  496: 
  497: # Try if GCC understands -fno-strict-aliasing
  498: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  499: CFLAGS_1="$CFLAGS"
  500: CFLAGS="$CFLAGS -fno-strict-aliasing"
  501: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  502: CFLAGS="$CFLAGS_1"
  503: AC_MSG_RESULT($ac_nostrictaliasing)
  504: 
  505: # Try if GCC understands -fno-crossjumping
  506: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  507: CFLAGS_1="$CFLAGS"
  508: CFLAGS="$CFLAGS -fno-crossjumping"
  509: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  510: CFLAGS="$CFLAGS_1"
  511: AC_MSG_RESULT($ac_nocrossjumping)
  512: 
  513: # Try if GCC understands -fno-reorder-blocks
  514: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  515: CFLAGS_1="$CFLAGS"
  516: CFLAGS="$CFLAGS -fno-reorder-blocks"
  517: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  518: CFLAGS="$CFLAGS_1"
  519: AC_MSG_RESULT($ac_noreorder_blocks)
  520: 
  521: # Try if GCC understands __attribute__((unused))
  522: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  523: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  524: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  525: AC_MSG_RESULT($MAYBE_UNUSED)
  526: 
  527: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  528: AC_SUBST(asm_fs)
  529: 
  530: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  531: AC_SUBST(disasm_fs)
  532: 
  533: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  534: 
  535: case "$host_os" in
  536: 	*win32*)
  537: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  538: 		DIRSEP="\\\\"
  539: 		PATHSEP=";"
  540: 		#we want the builtins of command.com/cmd.exe and its
  541: 		# handling of .com files.
  542: 		#$COMSPEC contains the name of the Windows shell;
  543: 		# the ./ is there, because the bash does not recognize
  544: 		# absolute DOS filenames
  545: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  546: 		;;
  547: 	*darwin*)
  548: 		#Darwin uses some funny preprocessor by default; eliminate it:
  549: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  550: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  551: 		DIRSEP="/"
  552: 		PATHSEP=":"
  553: 		DEFAULTSYSTEMPREFIX=""
  554: 		;;
  555: 	*)
  556: 		DIRSEP="/"
  557: 		PATHSEP=":"
  558: 		DEFAULTSYSTEMPREFIX=""
  559: 		;;
  560: esac
  561: AC_SUBST(DIRSEP)
  562: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  563: AC_SUBST(PATHSEP)
  564: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  565: AC_SUBST(DEFAULTSYSTEMPREFIX)
  566: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  567: 
  568: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  569: #This magic incantation  seems to be completely undocumented.
  570: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  571: 
  572: dnl Now a little support for DOS/DJGCC
  573: AC_SUBST(GFORTH_EXE)
  574: GFORTH_EXE=""
  575: AC_SUBST(GFORTHFAST_EXE)
  576: GFORTHFAST_EXE=""
  577: AC_SUBST(GFORTHITC_EXE)
  578: GFORTHITC_EXE=""
  579: AC_SUBST(GFORTHDITC_EXE)
  580: GFORTHDITC_EXE=""
  581: 
  582: AC_SUBST(FORTHSIZES)
  583: 
  584: dnl if test "$PEEPHOLE" = "yes"
  585: dnl then
  586: dnl    PEEPHOLEFLAG="true"
  587: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  588: dnl else
  589: dnl    PEEPHOLEFLAG="false"
  590: dnl fi
  591: PEEPHOLEFLAG="true"
  592: AC_SUBST(PEEPHOLEFLAG)
  593: 
  594: dnl copy commands for systems that don't have links
  595: AC_SUBST(LINK_KERNL)
  596: LINK_KERNL=""
  597: 
  598: #if test $host_os=dos
  599: #then
  600: #  echo Configuring for DOS!!!
  601: #  MAKE_EXE="coff2exe gforth"
  602: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  603: #fi
  604: 
  605: dnl the following macro produces a warning with autoconf-2.1
  606: AC_C_BIGENDIAN
  607: AC_SUBST(KERNEL)
  608: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  609: if test $ac_cv_c_bigendian = yes; then
  610:   bytesex=b
  611:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  612: else
  613:   bytesex=l
  614:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  615: fi
  616: 
  617: #check how to do asm(".skip 16")
  618: #echo "CFLAGS=$CFLAGS"
  619: #echo "ac_link=$ac_link"
  620: AC_MSG_CHECKING([if and how we can waste code space])
  621: if test -z "$skipcode"; then
  622:     skipcode=no
  623:     CFLAGS_1="$CFLAGS"
  624:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  625:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  626:     do
  627: 	AC_TRY_RUN(
  628: [int foo(int,int,int);
  629: main()
  630: {
  631:   exit(foo(0,0,0)!=16);
  632: }
  633: int foo(int x, int y, int z)
  634: {
  635:   static void *labels[]={&&label1, &&label2};
  636:   if (x) {
  637:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  638:   label1:
  639:     asm("$i"); /* or ".space 16" or somesuch */
  640:   label2: ;
  641:   }
  642:   {
  643:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  644:   return labels[1]-labels[0];
  645:   }
  646: }]
  647: 	,skipcode=$i; break
  648: 	,,)
  649:     done
  650:     CFLAGS=$CFLAGS_1
  651: fi
  652: AC_MSG_RESULT($skipcode)
  653: if test "$skipcode" = no
  654: then 
  655:     if test -z $no_dynamic_default; then
  656: 	no_dynamic_default=1
  657: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  658:     fi
  659:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  660: else
  661:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  662: fi
  663: 
  664: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  665: #the point here is to get asm statements that look different to
  666: #gcc's "optimizer"
  667: if test -z "$asmcomment"; then
  668:     asmcomment=no
  669:     CFLAGS_1="$CFLAGS"
  670:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  671:     for i in '"# "' '"! "' '"; "'; do
  672: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  673:     done
  674:     CFLAGS=$CFLAGS_1
  675: fi
  676: AC_MSG_RESULT($asmcomment)
  677: if test "$asmcomment" != no
  678: then 
  679:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  680: fi
  681: 
  682: test "$no_dynamic_default" || no_dynamic_default=0
  683: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  684: 
  685: dnl Checks for programs.
  686: AC_PROG_LN_S
  687: AC_PROG_INSTALL
  688: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  689: 
  690: dnl Checks for library functions
  691: dnl This check is just for making later checks link with libm.
  692: dnl using sin here is no good idea since it is built-into gcc and typechecked
  693: AC_CHECK_LIB(m,asin)
  694: AC_CHECK_LIB(dl,dlopen)
  695: dnl check for libffi 2.x
  696: AC_CHECK_LIB(ffi,ffi_call)
  697: if test $ac_cv_lib_ffi_ffi_call = yes
  698: then
  699: LIBFFIFLAG="true"
  700: FFCALLFLAG="false"
  701: OLDCALLFLAG="false"
  702: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  703: else
  704: dnl check for ffcall libraries
  705: dnl unfortunately, these four calls are separated out into a library each.
  706: AC_CHECK_LIB(avcall,__builtin_avcall)
  707: AC_CHECK_LIB(callback,__vacall_r)
  708: AC_CHECK_LIB(vacall,vacall)
  709: AC_CHECK_LIB(trampoline,alloc_trampoline)
  710: LIBFFIFLAG="false"
  711: FFCALLFLAG="false"
  712: OLDCALLFLAG="true"
  713: 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])
  714: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  715: fi
  716: AC_SUBST(LIBFFIFLAG)
  717: AC_SUBST(FFCALLFLAG)
  718: AC_SUBST(OLDCALLFLAG)
  719: if test "$host_os" != "nextstep3"
  720: then
  721: 	AC_FUNC_MEMCMP
  722: fi
  723: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  724: AC_FUNC_FSEEKO
  725: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
  726: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  727: AC_DECL_SYS_SIGLIST
  728: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  729: AC_CHECK_FUNCS(expm1 log1p)
  730: AC_REPLACE_FUNCS(rint ecvt)
  731: dnl No check for select, because our replacement is no good under
  732: dnl anything but DOS
  733: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  734: AC_FUNC_FNMATCH
  735: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  736: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  737: AM_PATH_LISPDIR
  738: 
  739: kernel_fi=kernl${wordsize}${bytesex}.fi
  740: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  741: AC_SUBST(kernel_fi)
  742: AC_SUBST(include_fi)
  743: 
  744: #this breaks bindists
  745: #dnl replace srource directory by absolute value
  746: #if test $srcdir = "."; then srcdir=`pwd` 
  747: #fi
  748: 
  749: AC_SUBST(machine)
  750: AC_CONFIG_FILES([
  751: Makefile
  752: Makedist
  753: gforthmi
  754: vmgen
  755: machpc.fs
  756: envos.fs
  757: engine/Makefile
  758: doc/version.texi
  759: build-ec ])
  760: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  761: chmod +x gforthmi
  762: chmod +x vmgen
  763: chmod +x build-ec
  764: test -d kernel||mkdir kernel]],[[]])
  765: AC_OUTPUT
  766: 

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