File:  [gforth] / gforth / configure.in
Revision 1.148: download - view: text, annotated - select for diffs
Sun Jan 23 21:35:47 2005 UTC (14 years, 8 months ago) by anton
Branches: MAIN
CVS tags: HEAD
Workaround for gcc-3.4.0 bug in skip detection
Bugfix (skip detection)

    1: dnl Process this file with autoconf to produce a configure script.
    2: 
    3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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],[0.6.2-20030910],[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="September 10, 2003"
   30: AC_SUBST(UPDATED)
   31: AC_CONFIG_HEADERS(engine/config.h)
   32: 
   33: #suppress the "-g -O2" default
   34: test "$CFLAGS" || CFLAGS=-O2
   35: 
   36: AC_ARG_ENABLE(force-reg,
   37: [  --enable-force-reg	  Use explicit register declarations if they appear in
   38: 			  the machine.h file. This can cause a good speedup,
   39: 			  but also incorrect code with some gcc versions on
   40: 			  some processors (default disabled).],
   41: AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))
   42: AC_ARG_ENABLE(force-ll,
   43: [  --enable-force-ll	  Use explicit long long declarations if they appear in
   44: 			  the machine.h file. This can cause a good speedup,
   45: 			  but also incorrect code with some gcc versions on
   46: 			  some processors (default disabled).],
   47: AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)]))
   48: AC_SUBST(PROFEXES)
   49: AC_SUBST(PROFOBJS)
   50: 
   51: AC_ARG_ENABLE(gcc-pr15242-workaround,
   52:               AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
   53:                              dynamic code generation on some versions of gcc
   54:                              (slowdown~2 on Athlon) and causes slower building
   55:                              of gforth (but gforth speedups) on others.
   56:                              (default enabled)]),
   57: 		,enable_gcc_pr15242_workaround=yes)
   58: test "$enable_gcc_pr15242_workaround" = "no"||
   59: AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
   60: generation on gccs affected by PR15242])
   61: 
   62: AC_ARG_ENABLE(prof,
   63: [  --enable-prof          Build gforth-prof, which outputs frequently occuring
   64:                           sequences of primitives.],
   65: PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o")
   66: 
   67: AC_ARG_WITH(debug,
   68: [  --with-debug		  specifies option -g to compile with debug info
   69:   --without-debug	  omits the -g switch and creates smaller images on
   70: 			  machines where "strip" has problems with gcc style
   71: 			  debugging informations.],
   72: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   73: 
   74: dnl PEEPHOLE="yes"
   75: dnl AC_ARG_WITH(peephole,
   76: dnl [  --with-peephole	Enable peephole optimization (default)
   77: dnl   --without-peephole	disables peephole optimization. Creates smaller,
   78: dnl 			but slower images.],
   79: dnl PEEPHOLE="$withval")
   80: 
   81: #variables mentioned in INSTALL
   82: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
   83: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
   84: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
   85: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
   86: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
   87: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
   88: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
   89: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
   90: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
   91: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
   92: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
   93: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
   94: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
   95: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
   96: 
   97: #set up feature test macros, so the tests get them right:
   98: # turn on all POSIX, SUSv3, and GNU features if available
   99: AC_GNU_SOURCE
  100: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  101: 
  102: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  103: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  104: dnl but not for _XOPEN_SOURCE)
  105: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  106: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  107: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  108: # turn on large file support with 64-bit off_t where available
  109: AC_SYS_LARGEFILE
  110: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  111: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  112: 
  113: #currently we force direct threading this way.  Eventually we should
  114: #setup in the arch and engine files right
  115: 
  116: AC_PROG_CC
  117: 
  118: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  119: 
  120: AC_SUBST(CC)
  121: AC_SUBST(DEBUGFLAG)
  122: 
  123: AC_MSG_CHECKING(make type)
  124: make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
  125: 
  126: GNUMAKE='#'
  127: test "$make_type" = "GNU Make" && GNUMAKE=''
  128: 
  129: AC_MSG_RESULT($make_type)
  130: 
  131: AC_SUBST(GNUMAKE)
  132: 
  133: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  134: OLDLDFLAGS=$LDFLAGS
  135: LDFLAGS="$LDFLAGS -export-dynamic"
  136: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  137: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  138: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  139: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  140: AC_MSG_RESULT($ac_export_dynamic)
  141: 
  142: #terminology is a bit unusual here: The host is the system on which
  143: #gforth will run; the system on which configure will run is the `build'
  144: AC_CANONICAL_HOST
  145: case "$host_cpu" in
  146: 	arm*)
  147: 		machine=arm
  148: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  149: 		if test -z $no_dynamic_default; then
  150: 		    no_dynamic_default=1
  151: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  152: 		fi
  153: 		;;
  154: 	hppa*)
  155: 		machine=hppa
  156: 		$srcdir/mkinstalldirs arch/hppa
  157: 		AC_LIBOBJ(../arch/hppa/cache)
  158: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  159: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  160: 		LIBS="$LIBS -L/lib/pa1.1/"
  161: 		;;
  162: 	sparc*)
  163: 		machine=sparc
  164: 		;;
  165: 	i386)
  166: 		machine=386
  167: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  168: 		;;
  169: 	i486)
  170: 		machine=386
  171: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
  172: 		;;
  173: 	i*86)
  174: 		machine=386
  175: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  176: 		CFLAGS_1="$CFLAGS"
  177: 		CFLAGS="$CFLAGS -march=pentium"
  178: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  179: 		;;
  180: 	x86_64)
  181: 		machine=amd64
  182: 		;;
  183: 	ia64*)
  184: 		machine=ia64
  185: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  186: 		test "$skipcode" || skipcode="nop.i 0"
  187: 		#".skip 16" passes the test below,
  188: 		# but gives an assembler error in engine
  189: 		;;
  190:         m68k)
  191: 		machine=m68k
  192: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  193: 		if test "$host_os" = "nextstep3"
  194: 		then
  195: 			AC_LIBOBJ(termios)
  196: 		fi
  197: 		;;
  198: 	mips*)
  199: 		machine=mips
  200: 		#dynamic native code has the following problems on MIPS:
  201: 		#
  202: 		#1) J/JAL seems relocatable, but is are only
  203: 		#relocatable within a 256MB-segment.  While we try to
  204: 		#get the linker to arrange this, there is no guarantee
  205: 		#that this will succeed (and if the user uses a lot of
  206: 		#memory, it is likely to fail).
  207: 		#
  208: 		#2) The way we generate dynamic native code may
  209: 		#violate MIPS architectural restrictions (in
  210: 		#particular, the delay slots of LW, MFLO, etc.)
  211: 		#
  212: 		#Therefore we disable dynamic native code by default:
  213: 		if test -z $no_dynamic_default; then
  214: 		    no_dynamic_default=1
  215: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  216: 		fi
  217: 		;;
  218: 	alpha*)
  219: 		machine=alpha
  220: 		#full IEEE FP support for more uniformity across platforms:
  221: 		CFLAGS="$CFLAGS -mieee"
  222: 		;;
  223: 	power*|rs6000)
  224: 		machine=power
  225: 		$srcdir/mkinstalldirs arch/power
  226: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  227: 		#long long is broken on (at least) gcc-2.95.* for PPC
  228: 		test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
  229: 		;;
  230: 	*)
  231: 		AC_MSG_WARN([Using a generic machine description])
  232: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  233: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  234: 		machine=generic
  235: 		#I-cache flushing would be needed for dynamic code generation
  236: 		if test -z $no_dynamic_default; then
  237: 		    no_dynamic_default=1
  238: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  239: 		fi
  240: esac
  241: AC_SUBST(host)
  242: 
  243: if test "${enable_force_ll+set}" = set; then
  244:    ac_includes_default="$ac_includes_default
  245: #include \"arch/generic/128bit.h\""
  246: fi
  247: 
  248: dnl the following macro produces a warning with autoconf-2.1
  249: AC_CHECK_SIZEOF(char *)
  250: case "$ac_cv_sizeof_char_p" in
  251:   2)
  252:     wordsize=16
  253:     ;;
  254:   4)
  255:     wordsize=32
  256:     ;;
  257:   8)
  258:     wordsize=64
  259:     ;;
  260: esac
  261: 
  262: AC_CHECK_SIZEOF(char)
  263: AC_CHECK_SIZEOF(short)
  264: AC_CHECK_SIZEOF(int)
  265: AC_CHECK_SIZEOF(long)
  266: AC_CHECK_SIZEOF(long long)
  267: AC_CHECK_SIZEOF(intptr_t)
  268: AC_CHECK_SIZEOF(int128_t)
  269: AC_CHECK_SIZEOF(uint128_t)
  270: 
  271: AC_MSG_CHECKING([for a C type for cells])
  272: ac_cv_int_type_cell=none
  273: case "$ac_cv_sizeof_char_p" in
  274:   $ac_cv_sizeof_int)
  275:     ac_cv_int_type_cell=int
  276:     ;;
  277:   $ac_cv_sizeof_short)
  278:     ac_cv_int_type_cell=short
  279:     ;;
  280:   $ac_cv_sizeof_char)
  281:     ac_cv_int_type_cell=char
  282:     ;;
  283:   $ac_cv_sizeof_long)
  284:     ac_cv_int_type_cell=long
  285:     ;;
  286:   $ac_cv_sizeof_long_long)
  287:     ac_cv_int_type_cell="long long"
  288:     ;;
  289:   $ac_cv_sizeof_intptr_t)
  290:     ac_cv_int_type_cell="intptr_t"
  291:     ;;
  292:   $ac_cv_sizeof_int128_t)
  293:     ac_cv_int_type_cell="int128_t"
  294:     ;;
  295: esac
  296: AC_MSG_RESULT($ac_cv_int_type_cell)
  297: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  298: 
  299: AC_MSG_CHECKING([for a C type for double-cells])
  300: ac_cv_int_type_double_cell=none
  301: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  302:   $ac_cv_sizeof_short)
  303:     ac_cv_int_type_double_cell=short
  304:     ;;
  305:   $ac_cv_sizeof_int)
  306:     ac_cv_int_type_double_cell=int
  307:     ;;
  308:   $ac_cv_sizeof_long)
  309:     ac_cv_int_type_double_cell=long
  310:     ;;
  311:   $ac_cv_sizeof_long_long)
  312:     ac_cv_int_type_double_cell="long long"
  313:     ;;
  314:   $ac_cv_sizeof_intptr_t)
  315:     ac_cv_int_type_double_cell="intptr_t"
  316:     ;;
  317:   $ac_cv_sizeof_int128_t)
  318:     ac_cv_int_type_double_cell="int128_t"
  319:     ;;
  320: esac
  321: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  322: 
  323: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  324: ac_cv_int_type_double_ucell=none
  325: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  326:   $ac_cv_sizeof_short)
  327:     ac_cv_int_type_double_ucell="unsigned short"
  328:     ;;
  329:   $ac_cv_sizeof_int)
  330:     ac_cv_int_type_double_ucell="unsigned int"
  331:     ;;
  332:   $ac_cv_sizeof_long)
  333:     ac_cv_int_type_double_ucell="unsigned long"
  334:     ;;
  335:   $ac_cv_sizeof_long_long)
  336:     ac_cv_int_type_double_ucell="unsigned long long"
  337:     ;;
  338:   $ac_cv_sizeof_intptr_t)
  339:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  340:     ;;
  341:   $ac_cv_sizeof_uint128_t)
  342:     ac_cv_int_type_double_ucell="uint128_t"
  343:     ;;
  344: esac
  345: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  346: 
  347: if test "$ac_cv_int_type_double_cell" = none || \
  348:    test "$ac_cv_int_type_double_ucell" = none
  349: then
  350: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  351: 	AC_LIBOBJ(dblsub)
  352: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  353: else
  354: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  355: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  356: fi
  357: 
  358: AC_TYPE_OFF_T
  359: AC_CHECK_SIZEOF(off_t)
  360: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  361: ac_small_off_t=$?
  362: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  363: 
  364: ENGINE_FLAGS=
  365: AC_SUBST(ENGINE_FLAGS)
  366: 
  367: # Try if GCC understands -fno-gcse
  368: 
  369: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  370: CFLAGS_1="$CFLAGS"
  371: CFLAGS="$CFLAGS -fno-gcse"
  372: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  373: CFLAGS="$CFLAGS_1"
  374: AC_MSG_RESULT($ac_nogcse)
  375: 
  376: # Try if GCC understands -fno-strict-aliasing
  377: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  378: CFLAGS_1="$CFLAGS"
  379: CFLAGS="$CFLAGS -fno-strict-aliasing"
  380: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  381: CFLAGS="$CFLAGS_1"
  382: AC_MSG_RESULT($ac_nostrictaliasing)
  383: 
  384: # Try if GCC understands -fno-crossjumping
  385: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  386: CFLAGS_1="$CFLAGS"
  387: CFLAGS="$CFLAGS -fno-crossjumping"
  388: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  389: CFLAGS="$CFLAGS_1"
  390: AC_MSG_RESULT($ac_nocrossjumping)
  391: 
  392: # Try if GCC understands -fno-reorder-blocks
  393: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  394: CFLAGS_1="$CFLAGS"
  395: CFLAGS="$CFLAGS -fno-reorder-blocks"
  396: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  397: CFLAGS="$CFLAGS_1"
  398: AC_MSG_RESULT($ac_noreorder_blocks)
  399: 
  400: # Try if GCC understands __attribute__((unused))
  401: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  402: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  403: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  404: AC_MSG_RESULT($MAYBE_UNUSED)
  405: 
  406: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  407: AC_SUBST(asm_fs)
  408: 
  409: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  410: AC_SUBST(disasm_fs)
  411: 
  412: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  413: 
  414: case "$host_os" in
  415: 	*win32|cygwin)
  416: 		DIRSEP="\\\\"
  417: 		PATHSEP=";"
  418: 		#we want the builtins of command.com/cmd.exe and its
  419: 		# handling of .com files.
  420: 		#$COMSPEC contains the name of the Windows shell;
  421: 		# the ./ is there, because the bash does not recognize
  422: 		# absolute DOS filenames
  423: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  424: 		;;
  425: 	*darwin*)
  426: 		#Darwin uses some funny preprocessor by default; eliminate it:
  427: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  428: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  429: 		DIRSEP="/"
  430: 		PATHSEP=":"
  431: 		DEFAULTSYSTEMPREFIX=""
  432: 		;;
  433: 	*)
  434: 		DIRSEP="/"
  435: 		PATHSEP=":"
  436: 		DEFAULTSYSTEMPREFIX=""
  437: 		;;
  438: esac
  439: AC_SUBST(DIRSEP)
  440: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  441: AC_SUBST(PATHSEP)
  442: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  443: AC_SUBST(DEFAULTSYSTEMPREFIX)
  444: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  445: 
  446: dnl Now a little support for DOS/DJGCC
  447: AC_SUBST(GFORTH_EXE)
  448: GFORTH_EXE=""
  449: AC_SUBST(GFORTHFAST_EXE)
  450: GFORTHFAST_EXE=""
  451: AC_SUBST(GFORTHITC_EXE)
  452: GFORTHITC_EXE=""
  453: AC_SUBST(GFORTHDITC_EXE)
  454: GFORTHDITC_EXE=""
  455: 
  456: AC_SUBST(FORTHSIZES)
  457: 
  458: dnl if test "$PEEPHOLE" = "yes"
  459: dnl then
  460: dnl    PEEPHOLEFLAG="true"
  461: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  462: dnl else
  463: dnl    PEEPHOLEFLAG="false"
  464: dnl fi
  465: PEEPHOLEFLAG="true"
  466: AC_SUBST(PEEPHOLEFLAG)
  467: 
  468: dnl copy commands for systems that don't have links
  469: AC_SUBST(LINK_KERNL)
  470: LINK_KERNL=""
  471: 
  472: #if test $host_os=dos
  473: #then
  474: #  echo Configuring for DOS!!!
  475: #  MAKE_EXE="coff2exe gforth"
  476: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  477: #fi
  478: 
  479: dnl the following macro produces a warning with autoconf-2.1
  480: AC_C_BIGENDIAN
  481: AC_SUBST(KERNEL)
  482: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  483: if test $ac_cv_c_bigendian = yes; then
  484:   bytesex=b
  485:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  486: else
  487:   bytesex=l
  488:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  489: fi
  490: 
  491: #check how to do asm(".skip 16")
  492: echo "CFLAGS=$CFLAGS"
  493: echo "ac_link=$ac_link"
  494: AC_MSG_CHECKING([if and how we can waste code space])
  495: if test -z "$skipcode"; then
  496:     skipcode=no
  497:     CFLAGS_1="$CFLAGS"
  498:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  499:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  500:     do
  501: 	AC_TRY_RUN(
  502: [int foo(int,int,int);
  503: main()
  504: {
  505:   exit(foo(0,0,0)!=16);
  506: }
  507: int foo(int x, int y, int z)
  508: {
  509:   static void *labels[]={&&label1, &&label2};
  510:   if (x) {
  511:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  512:   label1:
  513:     asm("$i"); /* or ".space 16" or somesuch */
  514:   label2: ;
  515:   }
  516:   {
  517:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  518:   return labels[1]-labels[0];
  519:   }
  520: }]
  521: 	,skipcode=$i; break
  522: 	,,)
  523:     done
  524:     CFLAGS=$CFLAGS_1
  525: fi
  526: AC_MSG_RESULT($skipcode)
  527: if test "$skipcode" = no
  528: then 
  529:     if test -z $no_dynamic_default; then
  530: 	no_dynamic_default=1
  531: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  532:     fi
  533:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  534: else
  535:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  536: fi
  537: 
  538: test "$no_dynamic_default" || no_dynamic_default=0
  539: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  540: 
  541: dnl Checks for programs.
  542: AC_PROG_LN_S
  543: AC_PROG_INSTALL
  544: 
  545: dnl Checks for library functions
  546: dnl This check is just for making later checks link with libm.
  547: dnl using sin here is no good idea since it is built-into gcc and typechecked
  548: AC_CHECK_LIB(m,asin)
  549: AC_CHECK_LIB(dl,dlopen)
  550: dnl check for ffcall libraries
  551: dnl unfortunately, these four calls are separated out into a library each.
  552: AC_CHECK_LIB(avcall,__builtin_avcall)
  553: AC_CHECK_LIB(callback,__vacall_r)
  554: AC_CHECK_LIB(vacall,vacall)
  555: AC_CHECK_LIB(trampoline,alloc_trampoline)
  556: FFCALLFLAG="false"
  557: OLDCALLFLAG="true"
  558: 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])
  559: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  560: AC_SUBST(FFCALLFLAG)
  561: AC_SUBST(OLDCALLFLAG)
  562: if test "$host_os" != "nextstep3"
  563: then
  564: 	AC_FUNC_MEMCMP
  565: fi
  566: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  567: AC_FUNC_FSEEKO
  568: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
  569: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  570: AC_DECL_SYS_SIGLIST
  571: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  572: AC_CHECK_FUNCS(expm1 log1p)
  573: AC_REPLACE_FUNCS(rint ecvt)
  574: dnl No check for select, because our replacement is no good under
  575: dnl anything but DOS
  576: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  577: AC_FUNC_FNMATCH
  578: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  579: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  580: AM_PATH_LISPDIR
  581: 
  582: kernel_fi=kernl${wordsize}${bytesex}.fi
  583: AC_SUBST(kernel_fi)
  584: 
  585: #this breaks bindists
  586: #dnl replace srource directory by absolute value
  587: #if test $srcdir = "."; then srcdir=`pwd` 
  588: #fi
  589: 
  590: AC_SUBST(machine)
  591: AC_CONFIG_FILES([
  592: Makefile
  593: Makedist
  594: gforthmi
  595: vmgen
  596: machpc.fs
  597: engine/Makefile
  598: doc/version.texi ])
  599: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  600: chmod +x gforthmi
  601: chmod +x vmgen
  602: test -d kernel||mkdir kernel]],[[]])
  603: AC_OUTPUT
  604: 

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