File:  [gforth] / gforth / configure.in
Revision 1.223: download - view: text, annotated - select for diffs
Fri Apr 25 22:17:17 2008 UTC (11 years, 5 months ago) by anton
Branches: MAIN
CVS tags: HEAD
Bugfix: make and make dist don't need pre-installed Gforth
FORCE_REG_UNNECESSARY now defined automatically and used better
documentation bugfix

    1: dnl Process this file with autoconf to produce a configure script.
    2: 
    3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
    4: 
    5: #This file is part of Gforth.
    6: 
    7: #Gforth is free software; you can redistribute it and/or
    8: #modify it under the terms of the GNU General Public License
    9: #as published by the Free Software Foundation, either version 3
   10: #of the License, or (at your option) any later version.
   11: 
   12: #This program is distributed in the hope that it will be useful,
   13: #but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
   15: #GNU General Public License for more details.
   16: 
   17: #You should have received a copy of the GNU General Public License
   18: #along with this program. If not, see http://www.gnu.org/licenses/.
   19: 
   20: 
   21: dnl We use some automake macros here,
   22: dnl but don't use automake for creating Makefile.in
   23: AC_INIT([gforth],[0.6.9-20080405],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
   24: AC_PREREQ(2.54)
   25: #snapshots have numbers major.minor.release-YYYYMMDD
   26: #note that lexicographic ordering must be heeded.
   27: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
   28: UPDATED="February 23, 2008"
   29: AC_SUBST(UPDATED)
   30: AC_CONFIG_HEADERS(engine/config.h)
   31: 
   32: #ltdl stuff:
   33: AC_CONFIG_MACRO_DIR([libltdl/m4])
   34: LT_CONFIG_LTDL_DIR([libltdl])
   35: LT_INIT([dlopen])
   36: LTDL_INIT([subproject],[convenience])
   37: AC_CONFIG_AUX_DIR([libltdl/config])
   38: 
   39: # check for ltdl features we need
   40: # The lt_dladvise_init symbol was added with libtool-2.2
   41: if test "x$with_included_ltdl" != "xyes"; then
   42:   save_CFLAGS="$CFLAGS"
   43:   save_LDFLAGS="$LDFLAGS"
   44:   CFLAGS="$CFLAGS $LTDLINCL"
   45:   LDFLAGS="$LDFLAGS $LIBLTDL"
   46:   AC_CHECK_LIB([ltdl], [lt_dladvise_init],
   47: 		[],
   48: 	[AC_MSG_ERROR([libltdl-2.2 or later needed; configure with --with-included-ltdl])])
   49:   LDFLAGS="$save_LDFLAGS"
   50:   CFLAGS="$save_CFLAGS"
   51: fi
   52: 
   53: #how to link with libltdl
   54: if test "x$with_included_ltdl" = "xyes"; then
   55:   #hard-code it (hopefully portable); the official way is to use automake :-(
   56:   LTDL_LDLIBS='-L$(top_builddir)/libltdl/.libs -lltdlc'
   57: else
   58:   LTDL_LDLIBS='$(LIBLTDL)'
   59: fi
   60: AC_SUBST(LTDL_LDLIBS)
   61: 
   62: #suppress the "-g -O2" default
   63: test "$CFLAGS" || CFLAGS=-O2
   64: 
   65: AC_ARG_ENABLE(force-cdiv,
   66: 	AC_HELP_STRING([--enable-force-cdiv],
   67: 		       [  Use the native C division - symmetric - instead of
   68: 		          floored division (default disabled).]),
   69: 	,enable_force_cdiv=no)
   70: test "$enable_force_cdiv" = "no"||
   71:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
   72: 
   73: AC_SUBST(PROFEXES)
   74: AC_SUBST(PROFOBJS)
   75: AC_ARG_ENABLE(prof,
   76: 	AC_HELP_STRING([--enable-prof],
   77: 			[ Build gforth-prof, which outputs frequently occuring
   78:                           sequences of primitives.]),
   79: 	,enable_prof=no)
   80: if test "$enable_prof" != "no"; then
   81:   PROFEXES='gforth-prof$(OPT)$(EXE)'; PROFOBJS='engine-prof$(OPT).o main-prof$(OPT).o profile$(OPT).o'
   82: fi
   83: 
   84: AC_ARG_WITH(debug,
   85: [  --with-debug		  specifies option -g to compile with debug info
   86:   --without-debug	  omits the -g switch and creates smaller images on
   87: 			  machines where "strip" has problems with gcc style
   88: 			  debugging informations.],
   89: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   90: 
   91: GCC_LD="\$(GCC)"
   92: EC_MODE="false"
   93: EC=""
   94: engine2='engine2$(OPT).o'
   95: engine_fast2='engine-fast2$(OPT).o'
   96: no_dynamic=""
   97: image_i=""
   98: signals_o="io.o signals.o"
   99: 
  100: AC_ARG_WITH(ec,
  101: 	AC_HELP_STRING([--with-ec=<arch>],
  102: 			[  Build gforth for systems without OS.]),
  103: [if test "$withval" = "no"; then
  104:   echo "defining hosted system"
  105: else
  106:   echo "defining standalone system (${withval})"
  107:   AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
  108:   EC_MODE="true"
  109:   EC="-ec"
  110:   engine2=""
  111:   engine_fast2=""
  112:   no_dynamic="-DNO_DYNAMIC"
  113:   image_i="image.i"
  114:   if test "$withval" != "yes"; then
  115:     signals_o="io-${withval}.o"
  116:   else
  117:     signals_o="io.o"
  118:   fi
  119:   GCC_PATH=$(which $CC)
  120:   LIB_PATH=${GCC_PATH%/*/*}
  121:   GCC_LD="\$(LD)"
  122:   platform=${withval}
  123: fi])
  124: 
  125: #variables mentioned in INSTALL
  126: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x).])
  127: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  128: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  129: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  130: 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)])
  131: 
  132: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  133: AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)])
  134: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  135: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  136: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  137: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  138: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  139: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  140: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  141: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  142: AC_ARG_VAR(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches])
  143: AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code])
  144: AC_ARG_VAR(asmcomment, [assembler comment start string])
  145: AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)])
  146: 
  147: #set up feature test macros, so the tests get them right:
  148: # turn on all POSIX, SUSv3, and GNU features if available
  149: AC_GNU_SOURCE
  150: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  151: 
  152: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  153: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  154: dnl but not for _XOPEN_SOURCE)
  155: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  156: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  157: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  158: # turn on large file support with 64-bit off_t where available
  159: AC_SYS_LARGEFILE
  160: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  161: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  162: 
  163: #currently we force direct threading this way.  Eventually we should
  164: #setup in the arch and engine files right
  165: 
  166: AC_PROG_CC
  167: 
  168: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  169: 
  170: AC_MSG_CHECKING([whether to use two dispatches per conditional branch])
  171: test x$condbranch_opt = x && 
  172: if ($CC -v 2>&1 |grep -q 'gcc version 3'); then
  173:    condbranch_opt=0
  174: else
  175:    condbranch_opt=1
  176: fi
  177: AC_MSG_RESULT($condbranch_opt)
  178: AC_SUBST(condbranch_opt)
  179: 
  180: AC_SUBST(CC)
  181: AC_SUBST(GCC_LD)
  182: AC_SUBST(DEBUGFLAG)
  183: AC_SUBST(EC)
  184: AC_SUBST(EC_MODE)
  185: AC_SUBST(engine2)
  186: AC_SUBST(engine_fast2)
  187: AC_SUBST(no_dynamic)
  188: AC_SUBST(image_i)
  189: AC_SUBST(signals_o)
  190: 
  191: #this is used to disable some (not generally essential) part of the
  192: #Makefile that some makes don't grok.  It would be better to test for
  193: #this specific Makefile feature than the make version.
  194: AC_MSG_CHECKING(make type)
  195: make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  196: GNUMAKE='#'
  197: test "$make_type" = "GNU Make" && GNUMAKE=''
  198: AC_MSG_RESULT($make_type)
  199: AC_SUBST(GNUMAKE)
  200: 
  201: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  202: OLDLDFLAGS=$LDFLAGS
  203: LDFLAGS="$LDFLAGS -export-dynamic"
  204: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  205: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  206: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  207: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  208: AC_MSG_RESULT($ac_export_dynamic)
  209: 
  210: #terminology is a bit unusual here: The host is the system on which
  211: #gforth will run; the system on which configure will run is the `build'
  212: AC_CANONICAL_HOST
  213: case "$host_cpu" in
  214: 	arm*)
  215: 		machine=arm
  216: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  217: 		if test x$platform = xnxt; then
  218: 		   CFLAGS="$CFLAGS -mthumb -mthumb-interwork"
  219: 		fi
  220: 		if test -z $arm_cacheflush; then
  221: 		   case "$host_os" in
  222: 		     *linux*)
  223: 			arm_cacheflush=arch/arm/cacheflush-linux 
  224: 			;;
  225: 		     *)   
  226: 			no_dynamic_default=1
  227: 			arm_cacheflush=arch/arm/cacheflush0
  228: 			AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  229: 			;;
  230:                    esac
  231: 		fi
  232:                 AC_LIBSOURCES([../arch/arm/cacheflush0, dnl
  233: 			       ../arch/arm/cacheflush-linux])
  234:                 AC_LIBOBJ(../$arm_cacheflush)
  235:                 #longer skipcodes lead to problems on ARM, and it uses
  236:                 #only 4-byte alignment anyway
  237: 		test "$skipcode" || skipcode="nop"
  238: 		;;
  239: 	hppa*)
  240: 		machine=hppa
  241: 		$srcdir/mkinstalldirs arch/hppa
  242: 		AC_LIBOBJ(../arch/hppa/cache)
  243: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  244: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  245: 		LIBS="$LIBS -L/lib/pa1.1/"
  246: 		;;
  247: 	sparc*)
  248: 		machine=sparc
  249: 		;;
  250: 	i386)
  251: 		machine=386
  252: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  253: 		;;
  254: 	i486)
  255: 		machine=386
  256: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
  257: 		;;
  258: 	i*86)
  259: 		machine=386
  260: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  261: 		CFLAGS_1="$CFLAGS"
  262: 		CFLAGS="$CFLAGS -march=pentium"
  263: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  264: 		;;
  265: 	x86_64)
  266: 		case $CC
  267: 		in
  268: 		    *-m32*)
  269: 		    	machine=386
  270: 			CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
  271: 			CFLAGS_1="$CFLAGS"
  272: 			CFLAGS="$CFLAGS -march=athlon64"
  273: 			;;
  274: 		    *)
  275: 		    	machine=amd64
  276: 			;;
  277: 		esac
  278: 		;;
  279: 	ia64*)
  280: 		machine=ia64
  281: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  282: 		test "$skipcode" || skipcode="nop.i 0"
  283: 		#".skip 16" passes the test below,
  284: 		# but gives an assembler error in engine
  285: 		;;
  286:         m68k)
  287: 		machine=m68k
  288: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  289: 		if test "$host_os" = "nextstep3"
  290: 		then
  291: 			AC_LIBOBJ(termios)
  292: 		fi
  293: 		;;
  294: 	mips*)
  295: 		machine=mips
  296: 		#dynamic native code has the following problems on MIPS:
  297: 		#
  298: 		#1) J/JAL seems relocatable, but is are only
  299: 		#relocatable within a 256MB-segment.  While we try to
  300: 		#get the linker to arrange this, there is no guarantee
  301: 		#that this will succeed (and if the user uses a lot of
  302: 		#memory, it is likely to fail).
  303: 		#
  304: 		#2) The way we generate dynamic native code may
  305: 		#violate MIPS architectural restrictions (in
  306: 		#particular, the delay slots of LW, MFLO, etc.)
  307: 		#
  308: 		#Therefore we disable dynamic native code by default:
  309: 		if test -z $no_dynamic_default; then
  310: 		    no_dynamic_default=1
  311: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  312: 		fi
  313: 		;;
  314: 	alpha*)
  315: 		machine=alpha
  316: 		#full IEEE FP support for more uniformity across platforms:
  317: 		CFLAGS="$CFLAGS -mieee"
  318: 		;;
  319: 	power*|rs6000)
  320: 		machine=power
  321: 		$srcdir/mkinstalldirs arch/power
  322: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  323: 		#long long is broken on (at least) gcc-2.95.* for PPC
  324: 		test x$ac_cv_sizeof_long_long = x && 
  325: 		($CC -v 2>&1 |grep -q 'gcc version 2.95') &&
  326: 		ac_cv_sizeof_long_long=0
  327:                 #The only architecture with enough callee-saved registers
  328:                 test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
  329:                 #or use 2, hardly slower at run-time and starts up faster
  330: 		;;
  331: 	*)
  332: 		AC_MSG_WARN([Using a generic machine description])
  333: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  334: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  335: 		machine=generic
  336: 		#I-cache flushing would be needed for dynamic code generation
  337: 		if test -z $no_dynamic_default; then
  338: 		    no_dynamic_default=1
  339: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  340: 		fi
  341: esac
  342: AC_SUBST(host)
  343: 
  344: MAKEINC=""
  345: 
  346: echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)"
  347: if test x$EC_MODE = xtrue
  348: then
  349: 	echo "Check for arch/$machine/$platform/gforth.ld"
  350: 	if test -f arch/$machine/$platform/gforth.ld
  351: 	then
  352: 		LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS"
  353: 		if test x$platform = xnxt; then
  354: 			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 $LIBS"
  355: 		fi
  356: 	fi
  357: 	if test -f arch/$machine/$platform/make.inc
  358: 	then
  359: 		MAKEINC="include ../arch/$machine/$platform/make.inc"
  360: 	fi
  361: fi
  362: AC_SUBST(MAKEINC)
  363: 
  364: AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
  365: 
  366: test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
  367: AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
  368: 		   [number of registers in the maximum stack cache state for gforth-fast and gforth-native])
  369: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  370: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  371: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  372: 
  373: test x$GCC_PR15242_WORKAROUND = x ||
  374: AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND,
  375:                    [force (1) or forbid (0) use of a workaround for a gcc performance bug])
  376: 
  377: dnl the following macro produces a warning with autoconf-2.1
  378: AC_CHECK_SIZEOF(char *)
  379: case "$ac_cv_sizeof_char_p" in
  380:   2)
  381:     wordsize=16
  382:     ;;
  383:   4)
  384:     wordsize=32
  385:     ;;
  386:   8)
  387:     wordsize=64
  388:     ;;
  389: esac
  390: 
  391: AC_CHECK_SIZEOF(void *)
  392: case "$ac_cv_sizeof_void_p" in
  393:   2)
  394:     vwordsize=16
  395:     ;;
  396:   4)
  397:     vwordsize=32
  398:     ;;
  399:   8)
  400:     vwordsize=64
  401:     ;;
  402: esac
  403: 
  404: AC_CHECK_SIZEOF(char)
  405: AC_CHECK_SIZEOF(short)
  406: AC_CHECK_SIZEOF(int)
  407: AC_CHECK_SIZEOF(long)
  408: AC_CHECK_SIZEOF(long long)
  409: AC_CHECK_SIZEOF(intptr_t)
  410: AC_CHECK_SIZEOF(int128_t)
  411: AC_CHECK_SIZEOF(uint128_t)
  412: 
  413: AC_MSG_CHECKING([for a C type for cells])
  414: ac_cv_int_type_cell=none
  415: case "$ac_cv_sizeof_char_p" in
  416:   $ac_cv_sizeof_int)
  417:     ac_cv_int_type_cell=int
  418:     ;;
  419:   $ac_cv_sizeof_short)
  420:     ac_cv_int_type_cell=short
  421:     ;;
  422:   $ac_cv_sizeof_char)
  423:     ac_cv_int_type_cell=char
  424:     ;;
  425:   $ac_cv_sizeof_long)
  426:     ac_cv_int_type_cell=long
  427:     ;;
  428:   $ac_cv_sizeof_long_long)
  429:     ac_cv_int_type_cell="long long"
  430:     ;;
  431:   $ac_cv_sizeof_intptr_t)
  432:     ac_cv_int_type_cell="intptr_t"
  433:     ;;
  434: esac
  435: AC_MSG_RESULT($ac_cv_int_type_cell)
  436: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  437: 
  438: AC_MSG_CHECKING([for a C type for wydes])
  439: ac_cv_wyde_type_cell=none
  440: case 2 in
  441:   $ac_cv_sizeof_int)
  442:     ac_cv_wyde_type_cell=int
  443:     ;;
  444:   $ac_cv_sizeof_short)
  445:     ac_cv_wyde_type_cell=short
  446:     ;;
  447:   $ac_cv_sizeof_char)
  448:     ac_cv_wyde_type_cell=char
  449:     ;;
  450:   $ac_cv_sizeof_long)
  451:     ac_cv_wyde_type_cell=long
  452:     ;;
  453:   $ac_cv_sizeof_long_long)
  454:     ac_cv_wyde_type_cell="long long"
  455:     ;;
  456:   $ac_cv_sizeof_intptr_t)
  457:     ac_cv_wyde_type_cell="intptr_t"
  458:     ;;
  459: esac
  460: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  461: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  462: 
  463: AC_MSG_CHECKING([for a C type for tetrabytes])
  464: ac_cv_tetrabyte_type_cell=none
  465: case 4 in
  466:   $ac_cv_sizeof_int)
  467:     ac_cv_tetrabyte_type_cell=int
  468:     ;;
  469:   $ac_cv_sizeof_short)
  470:     ac_cv_tetrabyte_type_cell=short
  471:     ;;
  472:   $ac_cv_sizeof_char)
  473:     ac_cv_tetrabyte_type_cell=char
  474:     ;;
  475:   $ac_cv_sizeof_long)
  476:     ac_cv_tetrabyte_type_cell=long
  477:     ;;
  478:   $ac_cv_sizeof_long_long)
  479:     ac_cv_tetrabyte_type_cell="long long"
  480:     ;;
  481:   $ac_cv_sizeof_intptr_t)
  482:     ac_cv_tetrabyte_type_cell="intptr_t"
  483:     ;;
  484: esac
  485: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  486: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  487: 
  488: AC_MSG_CHECKING([for a C type for double-cells])
  489: ac_cv_int_type_double_cell=none
  490: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  491:   $ac_cv_sizeof_short)
  492:     ac_cv_int_type_double_cell=short
  493:     ;;
  494:   $ac_cv_sizeof_int)
  495:     ac_cv_int_type_double_cell=int
  496:     ;;
  497:   $ac_cv_sizeof_long)
  498:     ac_cv_int_type_double_cell=long
  499:     ;;
  500:   $ac_cv_sizeof_long_long)
  501:     ac_cv_int_type_double_cell="long long"
  502:     ;;
  503:   $ac_cv_sizeof_intptr_t)
  504:     ac_cv_int_type_double_cell="intptr_t"
  505:     ;;
  506:   $ac_cv_sizeof_int128_t)
  507:     ac_cv_int_type_double_cell="int128_t"
  508:     ;;
  509: esac
  510: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  511: 
  512: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  513: ac_cv_int_type_double_ucell=none
  514: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  515:   $ac_cv_sizeof_short)
  516:     ac_cv_int_type_double_ucell="unsigned short"
  517:     ;;
  518:   $ac_cv_sizeof_int)
  519:     ac_cv_int_type_double_ucell="unsigned int"
  520:     ;;
  521:   $ac_cv_sizeof_long)
  522:     ac_cv_int_type_double_ucell="unsigned long"
  523:     ;;
  524:   $ac_cv_sizeof_long_long)
  525:     ac_cv_int_type_double_ucell="unsigned long long"
  526:     ;;
  527:   $ac_cv_sizeof_intptr_t)
  528:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  529:     ;;
  530:   $ac_cv_sizeof_uint128_t)
  531:     ac_cv_int_type_double_ucell="uint128_t"
  532:     ;;
  533: esac
  534: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  535: 
  536: if test "$ac_cv_int_type_double_cell" != none && \
  537:    test "$ac_cv_int_type_double_ucell" != none
  538: then
  539: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  540: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  541:         OPTS=-ll
  542: else
  543:         if test "$ac_cv_sizeof_char_p" = 8; then
  544:            OPTS="-ll -noll"
  545:         else
  546:            OPTS=-noll
  547:         fi
  548: fi
  549: 
  550: if grep -q FORCE_REG arch/$machine/machine.h; then
  551:    OPTS=`for i in $OPTS; do echo -n "$i-reg "; done`$OPTS
  552: else
  553:   AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
  554: fi
  555: AC_SUBST(OPTS)
  556: 
  557: AC_TYPE_OFF_T
  558: AC_CHECK_SIZEOF(off_t)
  559: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  560: ac_small_off_t=$?
  561: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  562: 
  563: ENGINE_FLAGS=
  564: AC_SUBST(ENGINE_FLAGS)
  565: 
  566: # Try if GCC understands -fno-gcse
  567: 
  568: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  569: CFLAGS_1="$CFLAGS"
  570: CFLAGS="$CFLAGS -fno-gcse"
  571: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  572: CFLAGS="$CFLAGS_1"
  573: AC_MSG_RESULT($ac_nogcse)
  574: 
  575: # Try if GCC understands -fno-strict-aliasing
  576: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  577: CFLAGS_1="$CFLAGS"
  578: CFLAGS="$CFLAGS -fno-strict-aliasing"
  579: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  580: CFLAGS="$CFLAGS_1"
  581: AC_MSG_RESULT($ac_nostrictaliasing)
  582: 
  583: # Try if GCC understands -fno-crossjumping
  584: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  585: CFLAGS_1="$CFLAGS"
  586: CFLAGS="$CFLAGS -fno-crossjumping"
  587: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  588: CFLAGS="$CFLAGS_1"
  589: AC_MSG_RESULT($ac_nocrossjumping)
  590: 
  591: # Try if GCC understands -fno-reorder-blocks
  592: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  593: CFLAGS_1="$CFLAGS"
  594: CFLAGS="$CFLAGS -fno-reorder-blocks"
  595: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  596: CFLAGS="$CFLAGS_1"
  597: AC_MSG_RESULT($ac_noreorder_blocks)
  598: 
  599: # Try if GCC understands -falign-labels=1
  600: AC_MSG_CHECKING([if $CC understands -falign-labels=1])
  601: CFLAGS_1="$CFLAGS"
  602: CFLAGS="$CFLAGS -falign-labels=1"
  603: AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no)
  604: CFLAGS="$CFLAGS_1"
  605: AC_MSG_RESULT($ac_align_labels)
  606: 
  607: # Try if GCC understands -falign-loops=1
  608: AC_MSG_CHECKING([if $CC understands -falign-loops=1])
  609: CFLAGS_1="$CFLAGS"
  610: CFLAGS="$CFLAGS -falign-loops=1"
  611: AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no)
  612: CFLAGS="$CFLAGS_1"
  613: AC_MSG_RESULT($ac_align_loops)
  614: 
  615: # Try if GCC understands -falign-jumps=1
  616: AC_MSG_CHECKING([if $CC understands -falign-jumps=1])
  617: CFLAGS_1="$CFLAGS"
  618: CFLAGS="$CFLAGS -falign-jumps=1"
  619: AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no)
  620: CFLAGS="$CFLAGS_1"
  621: AC_MSG_RESULT($ac_align_jumps)
  622: 
  623: # Try if GCC understands __attribute__((unused))
  624: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  625: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  626: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  627: AC_MSG_RESULT($MAYBE_UNUSED)
  628: 
  629: #try if m4 understands -s
  630: AC_MSG_CHECKING([how to invoke m4])
  631: if m4 -s /dev/null >/dev/null 2>&1; then
  632:  M4="m4 -s"
  633: else
  634:  M4=m4
  635: fi
  636: AC_SUBST(M4)
  637: AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4])
  638: AC_MSG_RESULT($M4)
  639: 
  640: # Find installed Gforth
  641: AC_MSG_CHECKING([for gforth])
  642: GFORTH="`cd / && which gforth 2>/dev/null`"
  643: if test -z "$GFORTH"; then
  644:   PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
  645: else
  646:   PREFORTH="$GFORTH -i `cd / && gforth --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
  647: fi
  648: AC_SUBST(PREFORTH)
  649: AC_DEFINE_UNQUOTED(PREFORTH,"$PREFORTH",[How to invoke the pre-installed gforth])
  650: AC_MSG_RESULT($PREFORTH)
  651: 
  652: #echo "machine='$machine'"
  653: 
  654: dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  655: AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],)
  656: AC_SUBST(asm_fs)
  657: 
  658: dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  659: AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],)
  660: AC_SUBST(disasm_fs)
  661: 
  662: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  663: 
  664: case "$host_os" in
  665: 	*win32*)
  666: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  667: 		DIRSEP="\\\\"
  668: 		PATHSEP=";"
  669: 		#we want the builtins of command.com/cmd.exe and its
  670: 		# handling of .com files.
  671: 		#$COMSPEC contains the name of the Windows shell;
  672: 		# the ./ is there, because the bash does not recognize
  673: 		# absolute DOS filenames
  674: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  675: 		;;
  676: 	*darwin*)
  677: 		#Darwin uses some funny preprocessor by default; eliminate it:
  678: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  679: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  680: 		DIRSEP="/"
  681: 		PATHSEP=":"
  682: 		DEFAULTSYSTEMPREFIX=""
  683: 		;;
  684: 	*)
  685: 		DIRSEP="/"
  686: 		PATHSEP=":"
  687: 		DEFAULTSYSTEMPREFIX=""
  688: 		;;
  689: esac
  690: AC_SUBST(DIRSEP)
  691: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  692: AC_SUBST(PATHSEP)
  693: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  694: AC_SUBST(DEFAULTSYSTEMPREFIX)
  695: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  696: 
  697: #work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
  698: #This magic incantation  seems to be completely undocumented.
  699: AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
  700: 
  701: dnl Now a little support for DOS/DJGCC
  702: AC_SUBST(GFORTH_EXE)
  703: GFORTH_EXE="true"
  704: AC_SUBST(GFORTHFAST_EXE)
  705: GFORTHFAST_EXE="true"
  706: AC_SUBST(GFORTHITC_EXE)
  707: GFORTHITC_EXE="true"
  708: AC_SUBST(GFORTHDITC_EXE)
  709: GFORTHDITC_EXE="true"
  710: 
  711: AC_SUBST(FORTHSIZES)
  712: 
  713: dnl if test "$PEEPHOLE" = "yes"
  714: dnl then
  715: dnl    PEEPHOLEFLAG="true"
  716: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  717: dnl else
  718: dnl    PEEPHOLEFLAG="false"
  719: dnl fi
  720: PEEPHOLEFLAG="true"
  721: AC_SUBST(PEEPHOLEFLAG)
  722: 
  723: dnl copy commands for systems that don't have links
  724: AC_SUBST(LINK_KERNL)
  725: LINK_KERNL=""
  726: 
  727: #if test $host_os=dos
  728: #then
  729: #  echo Configuring for DOS!!!
  730: #  MAKE_EXE="coff2exe gforth"
  731: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  732: #fi
  733: 
  734: dnl the following macro produces a warning with autoconf-2.1
  735: AC_C_BIGENDIAN
  736: AC_SUBST(KERNEL)
  737: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  738: if test $ac_cv_c_bigendian = yes; then
  739:   bytesex=b
  740:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  741: else
  742:   bytesex=l
  743:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  744: fi
  745: 
  746: #check how to do asm(".skip 16")
  747: #echo "CFLAGS=$CFLAGS"
  748: #echo "ac_link=$ac_link"
  749: AC_MSG_CHECKING([if and how we can waste code space])
  750: if test -z "$skipcode"; then
  751:     skipcode=no
  752:     CFLAGS_1="$CFLAGS"
  753:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  754:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  755:     do
  756: 	AC_TRY_RUN(
  757: [int foo(int,int,int);
  758: main()
  759: {
  760:   exit(foo(0,0,0)!=16);
  761: }
  762: int foo(int x, int y, int z)
  763: {
  764:   static void *labels[]={&&label1, &&label2};
  765:   if (x) {
  766:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  767:   label1:
  768:     asm("$i"); /* or ".space 16" or somesuch */
  769:   label2: ;
  770:   }
  771:   {
  772:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  773:   return labels[1]-labels[0];
  774:   }
  775: }]
  776: 	,skipcode=$i; break
  777: 	,,)
  778:     done
  779:     CFLAGS=$CFLAGS_1
  780: fi
  781: AC_MSG_RESULT($skipcode)
  782: if test "$skipcode" = no
  783: then 
  784:     if test -z $no_dynamic_default; then
  785: 	no_dynamic_default=1
  786: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  787:     fi
  788:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  789: else
  790:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  791: fi
  792: 
  793: AC_MSG_CHECKING([if and how we can do comments in asm statements])
  794: #the point here is to get asm statements that look different to
  795: #gcc's "optimizer"
  796: if test -z "$asmcomment"; then
  797:     asmcomment=no
  798:     CFLAGS_1="$CFLAGS"
  799:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  800:     for i in '"# "' '"! "' '"; "'; do
  801: 	AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,)
  802:     done
  803:     CFLAGS=$CFLAGS_1
  804: fi
  805: AC_MSG_RESULT($asmcomment)
  806: if test "$asmcomment" != no
  807: then 
  808:     AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string])
  809: fi
  810: 
  811: test "$no_dynamic_default" || no_dynamic_default=0
  812: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  813: 
  814: dnl Checks for programs.
  815: AC_PROG_LN_S
  816: AC_PROG_INSTALL
  817: AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
  818: 
  819: dnl MacOS X has a libtool that does something else
  820: AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool)
  821: 
  822: dnl Checks for library functions
  823: dnl This check is just for making later checks link with libm.
  824: dnl using sin here is no good idea since it is built-into gcc and typechecked
  825: AC_CHECK_LIB(m,asin)
  826: AC_CHECK_LIB(dl,dlopen)
  827: dnl check for libffi 2.x
  828: AC_CHECK_LIB(ffi,ffi_call)
  829: if test $ac_cv_lib_ffi_ffi_call = yes
  830: then
  831: LIBFFIFLAG="true"
  832: FFCALLFLAG="false"
  833: OLDCALLFLAG="false"
  834: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  835: else
  836: dnl check for ffcall libraries
  837: dnl unfortunately, these four calls are separated out into a library each.
  838: AC_CHECK_LIB(avcall,__builtin_avcall)
  839: AC_CHECK_LIB(callback,__vacall_r)
  840: AC_CHECK_LIB(vacall,vacall)
  841: AC_CHECK_LIB(trampoline,alloc_trampoline)
  842: LIBFFIFLAG="false"
  843: FFCALLFLAG="false"
  844: OLDCALLFLAG="true"
  845: 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])
  846: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  847: fi
  848: AC_SUBST(LIBFFIFLAG)
  849: AC_SUBST(FFCALLFLAG)
  850: AC_SUBST(OLDCALLFLAG)
  851: if test "$host_os" != "nextstep3"
  852: then
  853: 	AC_FUNC_MEMCMP
  854: fi
  855: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  856: AC_FUNC_FSEEKO
  857: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep)
  858: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  859: AC_DECL_SYS_SIGLIST
  860: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  861: AC_CHECK_FUNCS(expm1 log1p)
  862: AC_REPLACE_FUNCS(rint ecvt)
  863: dnl No check for select, because our replacement is no good under
  864: dnl anything but DOS
  865: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  866: AC_FUNC_FNMATCH
  867: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  868: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  869: AM_PATH_LISPDIR
  870: 
  871: kernel_fi=kernl${vwordsize}${bytesex}.fi
  872: include_fi=kernl${wordsize}${bytesex}${EC}.fi
  873: AC_SUBST(kernel_fi)
  874: AC_SUBST(include_fi)
  875: 
  876: #this breaks bindists
  877: #dnl replace srource directory by absolute value
  878: #if test $srcdir = "."; then srcdir=`pwd` 
  879: #fi
  880: 
  881: AC_SUBST(machine)
  882: AC_CONFIG_FILES([
  883: Makefile
  884: Makedist
  885: gforthmi
  886: vmgen
  887: machpc.fs
  888: envos.fs
  889: preforth
  890: engine/Makefile
  891: engine/libcc.h
  892: doc/version.texi
  893: build-ec ])
  894: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  895: chmod +x gforthmi
  896: chmod +x vmgen
  897: chmod +x build-ec
  898: chmod +x preforth
  899: test -d kernel||mkdir kernel
  900: $srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
  901: ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]])
  902: AC_OUTPUT
  903: 

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