File:  [gforth] / gforth / configure.in
Revision 1.178: download - view: text, annotated - select for diffs
Sun Mar 25 21:30:59 2007 UTC (12 years, 5 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
C-based Gforth EC starts to work

    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],[0.6.2-20060527],[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: else
  103:   echo "defining hosted system"
  104:   EC_MODE="false"
  105:   EC=""
  106:   engine2="engine2.o"
  107:   engine_fast2="engine-fast2.o"
  108:   no_dynamic=""
  109:   image_i=""
  110: fi
  111: 
  112: #variables mentioned in INSTALL
  113: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
  114: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  115: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  116: 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)])
  117: 
  118: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  119: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  120: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  121: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  122: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  123: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  124: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  125: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
  126: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
  127: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  128: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  129: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  130: AC_ARG_VAR(asmcomment, [assembler comment start string])
  131: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  132: 
  133: #set up feature test macros, so the tests get them right:
  134: # turn on all POSIX, SUSv3, and GNU features if available
  135: AC_GNU_SOURCE
  136: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  137: 
  138: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  139: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  140: dnl but not for _XOPEN_SOURCE)
  141: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  142: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  143: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  144: # turn on large file support with 64-bit off_t where available
  145: AC_SYS_LARGEFILE
  146: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  147: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  148: 
  149: #currently we force direct threading this way.  Eventually we should
  150: #setup in the arch and engine files right
  151: 
  152: AC_PROG_CC
  153: 
  154: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  155: 
  156: AC_SUBST(CC)
  157: AC_SUBST(DEBUGFLAG)
  158: AC_SUBST(EC)
  159: AC_SUBST(EC_MODE)
  160: AC_SUBST(engine2)
  161: AC_SUBST(engine_fast2)
  162: AC_SUBST(no_dynamic)
  163: AC_SUBST(image_i)
  164: 
  165: #this is used to disable some (not generally essential) part of the
  166: #Makefile that some makes don't grok.  It would be better to test for
  167: #this specific Makefile feature than the make version.
  168: AC_MSG_CHECKING(make type)
  169: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  170: GNUMAKE='#'
  171: test "$make_type" = "GNU Make" && GNUMAKE=''
  172: AC_MSG_RESULT($make_type)
  173: AC_SUBST(GNUMAKE)
  174: 
  175: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  176: OLDLDFLAGS=$LDFLAGS
  177: LDFLAGS="$LDFLAGS -export-dynamic"
  178: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  179: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  180: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  181: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  182: AC_MSG_RESULT($ac_export_dynamic)
  183: 
  184: #terminology is a bit unusual here: The host is the system on which
  185: #gforth will run; the system on which configure will run is the `build'
  186: AC_CANONICAL_HOST
  187: case "$host_cpu" in
  188: 	arm*)
  189: 		machine=arm
  190: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  191: 		if test -z $arm_cacheflush; then
  192: 		    no_dynamic_default=1
  193:                     arm_cacheflush=arch/arm/cacheflush0
  194: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  195: 		fi
  196:                 AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2])
  197:                 AC_LIBOBJ(../$arm_cacheflush)
  198:                 #longer skipcodes lead to problems on ARM, and it uses
  199:                 #only 4-byte alignment anyway
  200: 		test "$skipcode" || skipcode="nop"
  201: 		;;
  202: 	hppa*)
  203: 		machine=hppa
  204: 		$srcdir/mkinstalldirs arch/hppa
  205: 		AC_LIBOBJ(../arch/hppa/cache)
  206: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  207: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  208: 		LIBS="$LIBS -L/lib/pa1.1/"
  209: 		;;
  210: 	sparc*)
  211: 		machine=sparc
  212: 		;;
  213: 	i386)
  214: 		machine=386
  215: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  216: 		;;
  217: 	i486)
  218: 		machine=386
  219: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
  220: 		;;
  221: 	i*86)
  222: 		machine=386
  223: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  224: 		CFLAGS_1="$CFLAGS"
  225: 		CFLAGS="$CFLAGS -march=pentium"
  226: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  227: 		;;
  228: 	x86_64)
  229: 		machine=amd64
  230: 		;;
  231: 	ia64*)
  232: 		machine=ia64
  233: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  234: 		test "$skipcode" || skipcode="nop.i 0"
  235: 		#".skip 16" passes the test below,
  236: 		# but gives an assembler error in engine
  237: 		;;
  238:         m68k)
  239: 		machine=m68k
  240: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  241: 		if test "$host_os" = "nextstep3"
  242: 		then
  243: 			AC_LIBOBJ(termios)
  244: 		fi
  245: 		;;
  246: 	mips*)
  247: 		machine=mips
  248: 		#dynamic native code has the following problems on MIPS:
  249: 		#
  250: 		#1) J/JAL seems relocatable, but is are only
  251: 		#relocatable within a 256MB-segment.  While we try to
  252: 		#get the linker to arrange this, there is no guarantee
  253: 		#that this will succeed (and if the user uses a lot of
  254: 		#memory, it is likely to fail).
  255: 		#
  256: 		#2) The way we generate dynamic native code may
  257: 		#violate MIPS architectural restrictions (in
  258: 		#particular, the delay slots of LW, MFLO, etc.)
  259: 		#
  260: 		#Therefore we disable dynamic native code by default:
  261: 		if test -z $no_dynamic_default; then
  262: 		    no_dynamic_default=1
  263: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  264: 		fi
  265: 		;;
  266: 	alpha*)
  267: 		machine=alpha
  268: 		#full IEEE FP support for more uniformity across platforms:
  269: 		CFLAGS="$CFLAGS -mieee"
  270: 		;;
  271: 	power*|rs6000)
  272: 		machine=power
  273: 		$srcdir/mkinstalldirs arch/power
  274: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  275: 		#long long is broken on (at least) gcc-2.95.* for PPC
  276: 		test x$ac_cv_sizeof_long_long = x && 
  277: 		($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
  278: 		ac_cv_sizeof_long_long=0
  279: 		;;
  280: 	*)
  281: 		AC_MSG_WARN([Using a generic machine description])
  282: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  283: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  284: 		machine=generic
  285: 		#I-cache flushing would be needed for dynamic code generation
  286: 		if test -z $no_dynamic_default; then
  287: 		    no_dynamic_default=1
  288: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  289: 		fi
  290: esac
  291: AC_SUBST(host)
  292: 
  293: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  294: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  295: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  296: 
  297: test x$GCC_PR15242_WORKAROUND = x ||
  298: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  299:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  300: 
  301: dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
  302: dnl generation on gccs affected by PR15242])
  303: 
  304: 
  305: if test "${enable_force_ll+set}" = set; then
  306:    ac_includes_default="$ac_includes_default
  307: #include \"arch/generic/128bit.h\""
  308: fi
  309: 
  310: dnl the following macro produces a warning with autoconf-2.1
  311: AC_CHECK_SIZEOF(char *)
  312: case "$ac_cv_sizeof_char_p" in
  313:   2)
  314:     wordsize=16
  315:     ;;
  316:   4)
  317:     wordsize=32
  318:     ;;
  319:   8)
  320:     wordsize=64
  321:     ;;
  322: esac
  323: 
  324: AC_CHECK_SIZEOF(char)
  325: AC_CHECK_SIZEOF(short)
  326: AC_CHECK_SIZEOF(int)
  327: AC_CHECK_SIZEOF(long)
  328: AC_CHECK_SIZEOF(long long)
  329: AC_CHECK_SIZEOF(intptr_t)
  330: AC_CHECK_SIZEOF(int128_t)
  331: AC_CHECK_SIZEOF(uint128_t)
  332: 
  333: AC_MSG_CHECKING([for a C type for cells])
  334: ac_cv_int_type_cell=none
  335: case "$ac_cv_sizeof_char_p" in
  336:   $ac_cv_sizeof_int)
  337:     ac_cv_int_type_cell=int
  338:     ;;
  339:   $ac_cv_sizeof_short)
  340:     ac_cv_int_type_cell=short
  341:     ;;
  342:   $ac_cv_sizeof_char)
  343:     ac_cv_int_type_cell=char
  344:     ;;
  345:   $ac_cv_sizeof_long)
  346:     ac_cv_int_type_cell=long
  347:     ;;
  348:   $ac_cv_sizeof_long_long)
  349:     ac_cv_int_type_cell="long long"
  350:     ;;
  351:   $ac_cv_sizeof_intptr_t)
  352:     ac_cv_int_type_cell="intptr_t"
  353:     ;;
  354:   $ac_cv_sizeof_int128_t)
  355:     ac_cv_int_type_cell="int128_t"
  356:     ;;
  357: esac
  358: AC_MSG_RESULT($ac_cv_int_type_cell)
  359: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  360: 
  361: AC_MSG_CHECKING([for a C type for wydes])
  362: ac_cv_wyde_type_cell=none
  363: case 2 in
  364:   $ac_cv_sizeof_int)
  365:     ac_cv_wyde_type_cell=int
  366:     ;;
  367:   $ac_cv_sizeof_short)
  368:     ac_cv_wyde_type_cell=short
  369:     ;;
  370:   $ac_cv_sizeof_char)
  371:     ac_cv_wyde_type_cell=char
  372:     ;;
  373:   $ac_cv_sizeof_long)
  374:     ac_cv_wyde_type_cell=long
  375:     ;;
  376:   $ac_cv_sizeof_long_long)
  377:     ac_cv_wyde_type_cell="long long"
  378:     ;;
  379:   $ac_cv_sizeof_intptr_t)
  380:     ac_cv_wyde_type_cell="intptr_t"
  381:     ;;
  382:   $ac_cv_sizeof_int128_t)
  383:     ac_cv_wyde_type_cell="int128_t"
  384:     ;;
  385: esac
  386: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  387: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  388: 
  389: AC_MSG_CHECKING([for a C type for tetrabytes])
  390: ac_cv_tetrabyte_type_cell=none
  391: case 4 in
  392:   $ac_cv_sizeof_int)
  393:     ac_cv_tetrabyte_type_cell=int
  394:     ;;
  395:   $ac_cv_sizeof_short)
  396:     ac_cv_tetrabyte_type_cell=short
  397:     ;;
  398:   $ac_cv_sizeof_char)
  399:     ac_cv_tetrabyte_type_cell=char
  400:     ;;
  401:   $ac_cv_sizeof_long)
  402:     ac_cv_tetrabyte_type_cell=long
  403:     ;;
  404:   $ac_cv_sizeof_long_long)
  405:     ac_cv_tetrabyte_type_cell="long long"
  406:     ;;
  407:   $ac_cv_sizeof_intptr_t)
  408:     ac_cv_tetrabyte_type_cell="intptr_t"
  409:     ;;
  410:   $ac_cv_sizeof_int128_t)
  411:     ac_cv_tetrabyte_type_cell="int128_t"
  412:     ;;
  413: esac
  414: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  415: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  416: 
  417: AC_MSG_CHECKING([for a C type for double-cells])
  418: ac_cv_int_type_double_cell=none
  419: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  420:   $ac_cv_sizeof_short)
  421:     ac_cv_int_type_double_cell=short
  422:     ;;
  423:   $ac_cv_sizeof_int)
  424:     ac_cv_int_type_double_cell=int
  425:     ;;
  426:   $ac_cv_sizeof_long)
  427:     ac_cv_int_type_double_cell=long
  428:     ;;
  429:   $ac_cv_sizeof_long_long)
  430:     ac_cv_int_type_double_cell="long long"
  431:     ;;
  432:   $ac_cv_sizeof_intptr_t)
  433:     ac_cv_int_type_double_cell="intptr_t"
  434:     ;;
  435:   $ac_cv_sizeof_int128_t)
  436:     ac_cv_int_type_double_cell="int128_t"
  437:     ;;
  438: esac
  439: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  440: 
  441: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  442: ac_cv_int_type_double_ucell=none
  443: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  444:   $ac_cv_sizeof_short)
  445:     ac_cv_int_type_double_ucell="unsigned short"
  446:     ;;
  447:   $ac_cv_sizeof_int)
  448:     ac_cv_int_type_double_ucell="unsigned int"
  449:     ;;
  450:   $ac_cv_sizeof_long)
  451:     ac_cv_int_type_double_ucell="unsigned long"
  452:     ;;
  453:   $ac_cv_sizeof_long_long)
  454:     ac_cv_int_type_double_ucell="unsigned long long"
  455:     ;;
  456:   $ac_cv_sizeof_intptr_t)
  457:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  458:     ;;
  459:   $ac_cv_sizeof_uint128_t)
  460:     ac_cv_int_type_double_ucell="uint128_t"
  461:     ;;
  462: esac
  463: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  464: 
  465: if test "$ac_cv_int_type_double_cell" = none || \
  466:    test "$ac_cv_int_type_double_ucell" = none
  467: then
  468: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  469: 	AC_LIBOBJ(dblsub)
  470: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  471: else
  472: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  473: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  474: fi
  475: 
  476: AC_TYPE_OFF_T
  477: AC_CHECK_SIZEOF(off_t)
  478: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  479: ac_small_off_t=$?
  480: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  481: 
  482: ENGINE_FLAGS=
  483: AC_SUBST(ENGINE_FLAGS)
  484: 
  485: # Try if GCC understands -fno-gcse
  486: 
  487: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  488: CFLAGS_1="$CFLAGS"
  489: CFLAGS="$CFLAGS -fno-gcse"
  490: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  491: CFLAGS="$CFLAGS_1"
  492: AC_MSG_RESULT($ac_nogcse)
  493: 
  494: # Try if GCC understands -fno-strict-aliasing
  495: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  496: CFLAGS_1="$CFLAGS"
  497: CFLAGS="$CFLAGS -fno-strict-aliasing"
  498: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  499: CFLAGS="$CFLAGS_1"
  500: AC_MSG_RESULT($ac_nostrictaliasing)
  501: 
  502: # Try if GCC understands -fno-crossjumping
  503: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  504: CFLAGS_1="$CFLAGS"
  505: CFLAGS="$CFLAGS -fno-crossjumping"
  506: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  507: CFLAGS="$CFLAGS_1"
  508: AC_MSG_RESULT($ac_nocrossjumping)
  509: 
  510: # Try if GCC understands -fno-reorder-blocks
  511: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  512: CFLAGS_1="$CFLAGS"
  513: CFLAGS="$CFLAGS -fno-reorder-blocks"
  514: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  515: CFLAGS="$CFLAGS_1"
  516: AC_MSG_RESULT($ac_noreorder_blocks)
  517: 
  518: # Try if GCC understands __attribute__((unused))
  519: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  520: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  521: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  522: AC_MSG_RESULT($MAYBE_UNUSED)
  523: 
  524: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  525: AC_SUBST(asm_fs)
  526: 
  527: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  528: AC_SUBST(disasm_fs)
  529: 
  530: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  531: 
  532: case "$host_os" in
  533: 	*win32*)
  534: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  535: 		DIRSEP="\\\\"
  536: 		PATHSEP=";"
  537: 		#we want the builtins of command.com/cmd.exe and its
  538: 		# handling of .com files.
  539: 		#$COMSPEC contains the name of the Windows shell;
  540: 		# the ./ is there, because the bash does not recognize
  541: 		# absolute DOS filenames
  542: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  543: 		;;
  544: 	*darwin*)
  545: 		#Darwin uses some funny preprocessor by default; eliminate it:
  546: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  547: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  548: 		DIRSEP="/"
  549: 		PATHSEP=":"
  550: 		DEFAULTSYSTEMPREFIX=""
  551: 		;;
  552: 	*)
  553: 		DIRSEP="/"
  554: 		PATHSEP=":"
  555: 		DEFAULTSYSTEMPREFIX=""
  556: 		;;
  557: esac
  558: AC_SUBST(DIRSEP)
  559: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  560: AC_SUBST(PATHSEP)
  561: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  562: AC_SUBST(DEFAULTSYSTEMPREFIX)
  563: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  564: 
  565: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  566: #This magic incantation  seems to be completely undocumented.
  567: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  568: 
  569: dnl Now a little support for DOS/DJGCC
  570: AC_SUBST(GFORTH_EXE)
  571: GFORTH_EXE=""
  572: AC_SUBST(GFORTHFAST_EXE)
  573: GFORTHFAST_EXE=""
  574: AC_SUBST(GFORTHITC_EXE)
  575: GFORTHITC_EXE=""
  576: AC_SUBST(GFORTHDITC_EXE)
  577: GFORTHDITC_EXE=""
  578: 
  579: AC_SUBST(FORTHSIZES)
  580: 
  581: dnl if test "$PEEPHOLE" = "yes"
  582: dnl then
  583: dnl    PEEPHOLEFLAG="true"
  584: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  585: dnl else
  586: dnl    PEEPHOLEFLAG="false"
  587: dnl fi
  588: PEEPHOLEFLAG="true"
  589: AC_SUBST(PEEPHOLEFLAG)
  590: 
  591: dnl copy commands for systems that don't have links
  592: AC_SUBST(LINK_KERNL)
  593: LINK_KERNL=""
  594: 
  595: #if test $host_os=dos
  596: #then
  597: #  echo Configuring for DOS!!!
  598: #  MAKE_EXE="coff2exe gforth"
  599: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  600: #fi
  601: 
  602: dnl the following macro produces a warning with autoconf-2.1
  603: AC_C_BIGENDIAN
  604: AC_SUBST(KERNEL)
  605: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  606: if test $ac_cv_c_bigendian = yes; then
  607:   bytesex=b
  608:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  609: else
  610:   bytesex=l
  611:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  612: fi
  613: 
  614: #check how to do asm(".skip 16")
  615: #echo "CFLAGS=$CFLAGS"
  616: #echo "ac_link=$ac_link"
  617: AC_MSG_CHECKING([if and how we can waste code space])
  618: if test -z "$skipcode"; then
  619:     skipcode=no
  620:     CFLAGS_1="$CFLAGS"
  621:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  622:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  623:     do
  624: 	AC_TRY_RUN(
  625: [int foo(int,int,int);
  626: main()
  627: {
  628:   exit(foo(0,0,0)!=16);
  629: }
  630: int foo(int x, int y, int z)
  631: {
  632:   static void *labels[]={&&label1, &&label2};
  633:   if (x) {
  634:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  635:   label1:
  636:     asm("$i"); /* or ".space 16" or somesuch */
  637:   label2: ;
  638:   }
  639:   {
  640:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  641:   return labels[1]-labels[0];
  642:   }
  643: }]
  644: 	,skipcode=$i; break
  645: 	,,)
  646:     done
  647:     CFLAGS=$CFLAGS_1
  648: fi
  649: AC_MSG_RESULT($skipcode)
  650: if test "$skipcode" = no
  651: then 
  652:     if test -z $no_dynamic_default; then
  653: 	no_dynamic_default=1
  654: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  655:     fi
  656:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  657: else
  658:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  659: fi
  660: 
  661: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  662: #the point here is to get asm statements that look different to
  663: #gcc's "optimizer"
  664: if test -z "$asmcomment"; then
  665:     asmcomment=no
  666:     CFLAGS_1="$CFLAGS"
  667:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  668:     for i in '"# "' '"! "' '"; "'; do
  669: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  670:     done
  671:     CFLAGS=$CFLAGS_1
  672: fi
  673: AC_MSG_RESULT($asmcomment)
  674: if test "$asmcomment" != no
  675: then 
  676:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  677: fi
  678: 
  679: test "$no_dynamic_default" || no_dynamic_default=0
  680: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  681: 
  682: dnl Checks for programs.
  683: AC_PROG_LN_S
  684: AC_PROG_INSTALL
  685: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  686: 
  687: dnl Checks for library functions
  688: dnl This check is just for making later checks link with libm.
  689: dnl using sin here is no good idea since it is built-into gcc and typechecked
  690: AC_CHECK_LIB(m,asin)
  691: AC_CHECK_LIB(dl,dlopen)
  692: dnl check for libffi 2.x
  693: AC_CHECK_LIB(ffi,ffi_call)
  694: if test $ac_cv_lib_ffi_ffi_call = yes
  695: then
  696: LIBFFIFLAG="true"
  697: FFCALLFLAG="false"
  698: OLDCALLFLAG="false"
  699: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  700: else
  701: dnl check for ffcall libraries
  702: dnl unfortunately, these four calls are separated out into a library each.
  703: AC_CHECK_LIB(avcall,__builtin_avcall)
  704: AC_CHECK_LIB(callback,__vacall_r)
  705: AC_CHECK_LIB(vacall,vacall)
  706: AC_CHECK_LIB(trampoline,alloc_trampoline)
  707: LIBFFIFLAG="false"
  708: FFCALLFLAG="false"
  709: OLDCALLFLAG="true"
  710: 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])
  711: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  712: fi
  713: AC_SUBST(LIBFFIFLAG)
  714: AC_SUBST(FFCALLFLAG)
  715: AC_SUBST(OLDCALLFLAG)
  716: if test "$host_os" != "nextstep3"
  717: then
  718: 	AC_FUNC_MEMCMP
  719: fi
  720: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  721: AC_FUNC_FSEEKO
  722: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
  723: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  724: AC_DECL_SYS_SIGLIST
  725: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  726: AC_CHECK_FUNCS(expm1 log1p)
  727: AC_REPLACE_FUNCS(rint ecvt)
  728: dnl No check for select, because our replacement is no good under
  729: dnl anything but DOS
  730: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  731: AC_FUNC_FNMATCH
  732: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  733: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  734: AM_PATH_LISPDIR
  735: 
  736: kernel_fi=kernl${wordsize}${bytesex}.fi
  737: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  738: AC_SUBST(kernel_fi)
  739: AC_SUBST(include_fi)
  740: 
  741: #this breaks bindists
  742: #dnl replace srource directory by absolute value
  743: #if test $srcdir = "."; then srcdir=`pwd` 
  744: #fi
  745: 
  746: AC_SUBST(machine)
  747: AC_CONFIG_FILES([
  748: Makefile
  749: Makedist
  750: gforthmi
  751: vmgen
  752: machpc.fs
  753: envos.fs
  754: engine/Makefile
  755: doc/version.texi
  756: build-ec ])
  757: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  758: chmod +x gforthmi
  759: chmod +x vmgen
  760: chmod +x build-ec
  761: test -d kernel||mkdir kernel]],[[]])
  762: AC_OUTPUT
  763: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>