File:  [gforth] / gforth / configure.in
Revision 1.159: download - view: text, annotated - select for diffs
Sat Apr 1 17:30:32 2006 UTC (13 years, 6 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Environment OS from $host_os
R8C changes
Better output when there are no performance problems

    1: dnl Process this file with autoconf to produce a configure script.
    2: 
    3: #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 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],[0.6.2-20060312],[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="March 12, 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 "$enable_force_ll" = "no"||
   54:   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)])
   55: 
   56: AC_ARG_ENABLE(gcc-pr15242-workaround,
   57:               AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
   58:                              dynamic code generation on some versions of gcc
   59:                              (slowdown~2 on Athlon) and causes slower building
   60:                              of gforth (but gforth speedups) on others.
   61:                              (default enabled)]),
   62: 		,enable_gcc_pr15242_workaround=yes)
   63: test "$enable_gcc_pr15242_workaround" = "no"||
   64: AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
   65: generation on gccs affected by PR15242])
   66: 
   67: AC_ARG_ENABLE(force-cdiv,
   68: 	AC_HELP_STRING([--enable-force-cdiv],
   69: 		       [  Use the native C division - symmetric - instead of
   70: 		          floored division (default disabled).]),
   71: 	,enable_force_cdiv=no)
   72: test "$enable_force_cdiv" = "no"||
   73:   AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
   74: 
   75: AC_SUBST(PROFEXES)
   76: AC_SUBST(PROFOBJS)
   77: AC_ARG_ENABLE(prof,
   78: 	AC_HELP_STRING([--enable-prof],
   79: 			[ Build gforth-prof, which outputs frequently occuring
   80:                           sequences of primitives.]),
   81: 	,enable_prof=no)
   82: if test "$enable_prof" = "no"; then
   83:   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
   84: fi
   85: 
   86: AC_ARG_WITH(debug,
   87: [  --with-debug		  specifies option -g to compile with debug info
   88:   --without-debug	  omits the -g switch and creates smaller images on
   89: 			  machines where "strip" has problems with gcc style
   90: 			  debugging informations.],
   91: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   92: 
   93: dnl PEEPHOLE="yes"
   94: dnl AC_ARG_WITH(peephole,
   95: dnl [  --with-peephole	Enable peephole optimization (default)
   96: dnl   --without-peephole	disables peephole optimization. Creates smaller,
   97: dnl 			but slower images.],
   98: dnl PEEPHOLE="$withval")
   99: 
  100: #variables mentioned in INSTALL
  101: AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
  102: AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
  103: AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
  104: AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
  105: AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
  106: AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
  107: AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
  108: AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
  109: AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
  110: AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
  111: AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
  112: AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
  113: AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
  114: AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
  115: AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
  116: 
  117: #set up feature test macros, so the tests get them right:
  118: # turn on all POSIX, SUSv3, and GNU features if available
  119: AC_GNU_SOURCE
  120: dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
  121: 
  122: dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
  123: dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
  124: dnl but not for _XOPEN_SOURCE)
  125: dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
  126: dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
  127: dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
  128: # turn on large file support with 64-bit off_t where available
  129: AC_SYS_LARGEFILE
  130: dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
  131: dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
  132: 
  133: #currently we force direct threading this way.  Eventually we should
  134: #setup in the arch and engine files right
  135: 
  136: AC_PROG_CC
  137: 
  138: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
  139: 
  140: AC_SUBST(CC)
  141: AC_SUBST(DEBUGFLAG)
  142: 
  143: AC_MSG_CHECKING(make type)
  144: make_type=`make -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
  145: 
  146: GNUMAKE='#'
  147: test "$make_type" = "GNU Make" && GNUMAKE=''
  148: 
  149: AC_MSG_RESULT($make_type)
  150: 
  151: AC_SUBST(GNUMAKE)
  152: 
  153: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  154: OLDLDFLAGS=$LDFLAGS
  155: LDFLAGS="$LDFLAGS -export-dynamic"
  156: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  157: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  158: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  159: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  160: AC_MSG_RESULT($ac_export_dynamic)
  161: 
  162: #terminology is a bit unusual here: The host is the system on which
  163: #gforth will run; the system on which configure will run is the `build'
  164: AC_CANONICAL_HOST
  165: case "$host_cpu" in
  166: 	arm*)
  167: 		machine=arm
  168: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  169: 		if test -z $no_dynamic_default; then
  170: 		    no_dynamic_default=1
  171: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  172: 		fi
  173: 		;;
  174: 	hppa*)
  175: 		machine=hppa
  176: 		$srcdir/mkinstalldirs arch/hppa
  177: 		AC_LIBOBJ(../arch/hppa/cache)
  178: 		#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
  179: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  180: 		LIBS="$LIBS -L/lib/pa1.1/"
  181: 		;;
  182: 	sparc*)
  183: 		machine=sparc
  184: 		;;
  185: 	i386)
  186: 		machine=386
  187: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  188: 		;;
  189: 	i486)
  190: 		machine=386
  191: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
  192: 		;;
  193: 	i*86)
  194: 		machine=386
  195: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  196: 		CFLAGS_1="$CFLAGS"
  197: 		CFLAGS="$CFLAGS -march=pentium"
  198: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  199: 		;;
  200: 	x86_64)
  201: 		machine=amd64
  202: 		;;
  203: 	ia64*)
  204: 		machine=ia64
  205: 		AC_LIBOBJ(../arch/ia64/flush_icache_block)
  206: 		test "$skipcode" || skipcode="nop.i 0"
  207: 		#".skip 16" passes the test below,
  208: 		# but gives an assembler error in engine
  209: 		;;
  210:         m68k)
  211: 		machine=m68k
  212: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  213: 		if test "$host_os" = "nextstep3"
  214: 		then
  215: 			AC_LIBOBJ(termios)
  216: 		fi
  217: 		;;
  218: 	mips*)
  219: 		machine=mips
  220: 		#dynamic native code has the following problems on MIPS:
  221: 		#
  222: 		#1) J/JAL seems relocatable, but is are only
  223: 		#relocatable within a 256MB-segment.  While we try to
  224: 		#get the linker to arrange this, there is no guarantee
  225: 		#that this will succeed (and if the user uses a lot of
  226: 		#memory, it is likely to fail).
  227: 		#
  228: 		#2) The way we generate dynamic native code may
  229: 		#violate MIPS architectural restrictions (in
  230: 		#particular, the delay slots of LW, MFLO, etc.)
  231: 		#
  232: 		#Therefore we disable dynamic native code by default:
  233: 		if test -z $no_dynamic_default; then
  234: 		    no_dynamic_default=1
  235: 		    AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
  236: 		fi
  237: 		;;
  238: 	alpha*)
  239: 		machine=alpha
  240: 		#full IEEE FP support for more uniformity across platforms:
  241: 		CFLAGS="$CFLAGS -mieee"
  242: 		;;
  243: 	power*|rs6000)
  244: 		machine=power
  245: 		$srcdir/mkinstalldirs arch/power
  246: 		AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
  247: 		#long long is broken on (at least) gcc-2.95.* for PPC
  248: 		test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
  249: 		;;
  250: 	*)
  251: 		AC_MSG_WARN([Using a generic machine description])
  252: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  253: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  254: 		machine=generic
  255: 		#I-cache flushing would be needed for dynamic code generation
  256: 		if test -z $no_dynamic_default; then
  257: 		    no_dynamic_default=1
  258: 		    AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
  259: 		fi
  260: esac
  261: AC_SUBST(host)
  262: 
  263: test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
  264: AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
  265: 		   [number of registers in the default stack cache state for gforth-fast and gforth-native])
  266: 
  267: if test "${enable_force_ll+set}" = set; then
  268:    ac_includes_default="$ac_includes_default
  269: #include \"arch/generic/128bit.h\""
  270: fi
  271: 
  272: dnl the following macro produces a warning with autoconf-2.1
  273: AC_CHECK_SIZEOF(char *)
  274: case "$ac_cv_sizeof_char_p" in
  275:   2)
  276:     wordsize=16
  277:     ;;
  278:   4)
  279:     wordsize=32
  280:     ;;
  281:   8)
  282:     wordsize=64
  283:     ;;
  284: esac
  285: 
  286: AC_CHECK_SIZEOF(char)
  287: AC_CHECK_SIZEOF(short)
  288: AC_CHECK_SIZEOF(int)
  289: AC_CHECK_SIZEOF(long)
  290: AC_CHECK_SIZEOF(long long)
  291: AC_CHECK_SIZEOF(intptr_t)
  292: AC_CHECK_SIZEOF(int128_t)
  293: AC_CHECK_SIZEOF(uint128_t)
  294: 
  295: AC_MSG_CHECKING([for a C type for cells])
  296: ac_cv_int_type_cell=none
  297: case "$ac_cv_sizeof_char_p" in
  298:   $ac_cv_sizeof_int)
  299:     ac_cv_int_type_cell=int
  300:     ;;
  301:   $ac_cv_sizeof_short)
  302:     ac_cv_int_type_cell=short
  303:     ;;
  304:   $ac_cv_sizeof_char)
  305:     ac_cv_int_type_cell=char
  306:     ;;
  307:   $ac_cv_sizeof_long)
  308:     ac_cv_int_type_cell=long
  309:     ;;
  310:   $ac_cv_sizeof_long_long)
  311:     ac_cv_int_type_cell="long long"
  312:     ;;
  313:   $ac_cv_sizeof_intptr_t)
  314:     ac_cv_int_type_cell="intptr_t"
  315:     ;;
  316:   $ac_cv_sizeof_int128_t)
  317:     ac_cv_int_type_cell="int128_t"
  318:     ;;
  319: esac
  320: AC_MSG_RESULT($ac_cv_int_type_cell)
  321: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  322: 
  323: AC_MSG_CHECKING([for a C type for wydes])
  324: ac_cv_wyde_type_cell=none
  325: case 2 in
  326:   $ac_cv_sizeof_int)
  327:     ac_cv_wyde_type_cell=int
  328:     ;;
  329:   $ac_cv_sizeof_short)
  330:     ac_cv_wyde_type_cell=short
  331:     ;;
  332:   $ac_cv_sizeof_char)
  333:     ac_cv_wyde_type_cell=char
  334:     ;;
  335:   $ac_cv_sizeof_long)
  336:     ac_cv_wyde_type_cell=long
  337:     ;;
  338:   $ac_cv_sizeof_long_long)
  339:     ac_cv_wyde_type_cell="long long"
  340:     ;;
  341:   $ac_cv_sizeof_intptr_t)
  342:     ac_cv_wyde_type_cell="intptr_t"
  343:     ;;
  344:   $ac_cv_sizeof_int128_t)
  345:     ac_cv_wyde_type_cell="int128_t"
  346:     ;;
  347: esac
  348: AC_MSG_RESULT($ac_cv_wyde_type_cell)
  349: AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
  350: 
  351: AC_MSG_CHECKING([for a C type for tetrabytes])
  352: ac_cv_tetrabyte_type_cell=none
  353: case 4 in
  354:   $ac_cv_sizeof_int)
  355:     ac_cv_tetrabyte_type_cell=int
  356:     ;;
  357:   $ac_cv_sizeof_short)
  358:     ac_cv_tetrabyte_type_cell=short
  359:     ;;
  360:   $ac_cv_sizeof_char)
  361:     ac_cv_tetrabyte_type_cell=char
  362:     ;;
  363:   $ac_cv_sizeof_long)
  364:     ac_cv_tetrabyte_type_cell=long
  365:     ;;
  366:   $ac_cv_sizeof_long_long)
  367:     ac_cv_tetrabyte_type_cell="long long"
  368:     ;;
  369:   $ac_cv_sizeof_intptr_t)
  370:     ac_cv_tetrabyte_type_cell="intptr_t"
  371:     ;;
  372:   $ac_cv_sizeof_int128_t)
  373:     ac_cv_tetrabyte_type_cell="int128_t"
  374:     ;;
  375: esac
  376: AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
  377: AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
  378: 
  379: AC_MSG_CHECKING([for a C type for double-cells])
  380: ac_cv_int_type_double_cell=none
  381: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  382:   $ac_cv_sizeof_short)
  383:     ac_cv_int_type_double_cell=short
  384:     ;;
  385:   $ac_cv_sizeof_int)
  386:     ac_cv_int_type_double_cell=int
  387:     ;;
  388:   $ac_cv_sizeof_long)
  389:     ac_cv_int_type_double_cell=long
  390:     ;;
  391:   $ac_cv_sizeof_long_long)
  392:     ac_cv_int_type_double_cell="long long"
  393:     ;;
  394:   $ac_cv_sizeof_intptr_t)
  395:     ac_cv_int_type_double_cell="intptr_t"
  396:     ;;
  397:   $ac_cv_sizeof_int128_t)
  398:     ac_cv_int_type_double_cell="int128_t"
  399:     ;;
  400: esac
  401: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  402: 
  403: AC_MSG_CHECKING([for a C type for unsigned double-cells])
  404: ac_cv_int_type_double_ucell=none
  405: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  406:   $ac_cv_sizeof_short)
  407:     ac_cv_int_type_double_ucell="unsigned short"
  408:     ;;
  409:   $ac_cv_sizeof_int)
  410:     ac_cv_int_type_double_ucell="unsigned int"
  411:     ;;
  412:   $ac_cv_sizeof_long)
  413:     ac_cv_int_type_double_ucell="unsigned long"
  414:     ;;
  415:   $ac_cv_sizeof_long_long)
  416:     ac_cv_int_type_double_ucell="unsigned long long"
  417:     ;;
  418:   $ac_cv_sizeof_intptr_t)
  419:     ac_cv_int_type_double_ucell="unsigned intptr_t"
  420:     ;;
  421:   $ac_cv_sizeof_uint128_t)
  422:     ac_cv_int_type_double_ucell="uint128_t"
  423:     ;;
  424: esac
  425: AC_MSG_RESULT($ac_cv_int_type_double_ucell)
  426: 
  427: if test "$ac_cv_int_type_double_cell" = none || \
  428:    test "$ac_cv_int_type_double_ucell" = none
  429: then
  430: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  431: 	AC_LIBOBJ(dblsub)
  432: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  433: else
  434: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  435: 	AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
  436: fi
  437: 
  438: AC_TYPE_OFF_T
  439: AC_CHECK_SIZEOF(off_t)
  440: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  441: ac_small_off_t=$?
  442: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  443: 
  444: ENGINE_FLAGS=
  445: AC_SUBST(ENGINE_FLAGS)
  446: 
  447: # Try if GCC understands -fno-gcse
  448: 
  449: AC_MSG_CHECKING([if $CC understands -fno-gcse])
  450: CFLAGS_1="$CFLAGS"
  451: CFLAGS="$CFLAGS -fno-gcse"
  452: AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
  453: CFLAGS="$CFLAGS_1"
  454: AC_MSG_RESULT($ac_nogcse)
  455: 
  456: # Try if GCC understands -fno-strict-aliasing
  457: AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
  458: CFLAGS_1="$CFLAGS"
  459: CFLAGS="$CFLAGS -fno-strict-aliasing"
  460: AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
  461: CFLAGS="$CFLAGS_1"
  462: AC_MSG_RESULT($ac_nostrictaliasing)
  463: 
  464: # Try if GCC understands -fno-crossjumping
  465: AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
  466: CFLAGS_1="$CFLAGS"
  467: CFLAGS="$CFLAGS -fno-crossjumping"
  468: AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
  469: CFLAGS="$CFLAGS_1"
  470: AC_MSG_RESULT($ac_nocrossjumping)
  471: 
  472: # Try if GCC understands -fno-reorder-blocks
  473: AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
  474: CFLAGS_1="$CFLAGS"
  475: CFLAGS="$CFLAGS -fno-reorder-blocks"
  476: AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
  477: CFLAGS="$CFLAGS_1"
  478: AC_MSG_RESULT($ac_noreorder_blocks)
  479: 
  480: # Try if GCC understands __attribute__((unused))
  481: AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
  482: AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
  483: AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
  484: AC_MSG_RESULT($MAYBE_UNUSED)
  485: 
  486: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  487: AC_SUBST(asm_fs)
  488: 
  489: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  490: AC_SUBST(disasm_fs)
  491: 
  492: AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
  493: 
  494: case "$host_os" in
  495: 	*win32*)
  496: 		# !!!FIXME!!! problems with cygwin and ';' as path separator
  497: 		DIRSEP="\\\\"
  498: 		PATHSEP=";"
  499: 		#we want the builtins of command.com/cmd.exe and its
  500: 		# handling of .com files.
  501: 		#$COMSPEC contains the name of the Windows shell;
  502: 		# the ./ is there, because the bash does not recognize
  503: 		# absolute DOS filenames
  504: 		DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
  505: 		;;
  506: 	*darwin*)
  507: 		#Darwin uses some funny preprocessor by default; eliminate it:
  508: 		AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
  509: 		CFLAGS="$CFLAGS -no-cpp-precomp"
  510: 		DIRSEP="/"
  511: 		PATHSEP=":"
  512: 		DEFAULTSYSTEMPREFIX=""
  513: 		;;
  514: 	*)
  515: 		DIRSEP="/"
  516: 		PATHSEP=":"
  517: 		DEFAULTSYSTEMPREFIX=""
  518: 		;;
  519: esac
  520: AC_SUBST(DIRSEP)
  521: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  522: AC_SUBST(PATHSEP)
  523: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  524: AC_SUBST(DEFAULTSYSTEMPREFIX)
  525: AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
  526: 
  527: dnl Now a little support for DOS/DJGCC
  528: AC_SUBST(GFORTH_EXE)
  529: GFORTH_EXE=""
  530: AC_SUBST(GFORTHFAST_EXE)
  531: GFORTHFAST_EXE=""
  532: AC_SUBST(GFORTHITC_EXE)
  533: GFORTHITC_EXE=""
  534: AC_SUBST(GFORTHDITC_EXE)
  535: GFORTHDITC_EXE=""
  536: 
  537: AC_SUBST(FORTHSIZES)
  538: 
  539: dnl if test "$PEEPHOLE" = "yes"
  540: dnl then
  541: dnl    PEEPHOLEFLAG="true"
  542: dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  543: dnl else
  544: dnl    PEEPHOLEFLAG="false"
  545: dnl fi
  546: PEEPHOLEFLAG="true"
  547: AC_SUBST(PEEPHOLEFLAG)
  548: 
  549: dnl copy commands for systems that don't have links
  550: AC_SUBST(LINK_KERNL)
  551: LINK_KERNL=""
  552: 
  553: #if test $host_os=dos
  554: #then
  555: #  echo Configuring for DOS!!!
  556: #  MAKE_EXE="coff2exe gforth"
  557: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  558: #fi
  559: 
  560: dnl the following macro produces a warning with autoconf-2.1
  561: AC_C_BIGENDIAN
  562: AC_SUBST(KERNEL)
  563: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  564: if test $ac_cv_c_bigendian = yes; then
  565:   bytesex=b
  566:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  567: else
  568:   bytesex=l
  569:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  570: fi
  571: 
  572: #check how to do asm(".skip 16")
  573: echo "CFLAGS=$CFLAGS"
  574: echo "ac_link=$ac_link"
  575: AC_MSG_CHECKING([if and how we can waste code space])
  576: if test -z "$skipcode"; then
  577:     skipcode=no
  578:     CFLAGS_1="$CFLAGS"
  579:     CFLAGS="$CFLAGS $ENGINE_FLAGS"
  580:     for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  581:     do
  582: 	AC_TRY_RUN(
  583: [int foo(int,int,int);
  584: main()
  585: {
  586:   exit(foo(0,0,0)!=16);
  587: }
  588: int foo(int x, int y, int z)
  589: {
  590:   static void *labels[]={&&label1, &&label2};
  591:   if (x) {
  592:     y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
  593:   label1:
  594:     asm("$i"); /* or ".space 16" or somesuch */
  595:   label2: ;
  596:   }
  597:   {
  598:   if (y) goto *labels[z]; /* workaround for gcc PR12108 */
  599:   return labels[1]-labels[0];
  600:   }
  601: }]
  602: 	,skipcode=$i; break
  603: 	,,)
  604:     done
  605:     CFLAGS=$CFLAGS_1
  606: fi
  607: AC_MSG_RESULT($skipcode)
  608: if test "$skipcode" = no
  609: then 
  610:     if test -z $no_dynamic_default; then
  611: 	no_dynamic_default=1
  612: 	AC_MSG_WARN(Disabling default dynamic native code generation)
  613:     fi
  614:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  615: else
  616:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  617: fi
  618: 
  619: test "$no_dynamic_default" || no_dynamic_default=0
  620: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  621: 
  622: dnl Checks for programs.
  623: AC_PROG_LN_S
  624: AC_PROG_INSTALL
  625: 
  626: dnl Checks for library functions
  627: dnl This check is just for making later checks link with libm.
  628: dnl using sin here is no good idea since it is built-into gcc and typechecked
  629: AC_CHECK_LIB(m,asin)
  630: AC_CHECK_LIB(dl,dlopen)
  631: dnl check for libffi 2.x
  632: AC_CHECK_LIB(ffi,ffi_call)
  633: if test $ac_cv_lib_ffi_ffi_call = yes
  634: then
  635: LIBFFIFLAG="true"
  636: FFCALLFLAG="false"
  637: OLDCALLFLAG="false"
  638: AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
  639: else
  640: dnl check for ffcall libraries
  641: dnl unfortunately, these four calls are separated out into a library each.
  642: AC_CHECK_LIB(avcall,__builtin_avcall)
  643: AC_CHECK_LIB(callback,__vacall_r)
  644: AC_CHECK_LIB(vacall,vacall)
  645: AC_CHECK_LIB(trampoline,alloc_trampoline)
  646: LIBFFIFLAG="false"
  647: FFCALLFLAG="false"
  648: OLDCALLFLAG="true"
  649: 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])
  650: test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
  651: fi
  652: AC_SUBST(LIBFFIFLAG)
  653: AC_SUBST(FFCALLFLAG)
  654: AC_SUBST(OLDCALLFLAG)
  655: if test "$host_os" != "nextstep3"
  656: then
  657: 	AC_FUNC_MEMCMP
  658: fi
  659: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  660: AC_FUNC_FSEEKO
  661: AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
  662: AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
  663: AC_DECL_SYS_SIGLIST
  664: AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
  665: AC_CHECK_FUNCS(expm1 log1p)
  666: AC_REPLACE_FUNCS(rint ecvt)
  667: dnl No check for select, because our replacement is no good under
  668: dnl anything but DOS
  669: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  670: AC_FUNC_FNMATCH
  671: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  672: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  673: AM_PATH_LISPDIR
  674: 
  675: kernel_fi=kernl${wordsize}${bytesex}.fi
  676: AC_SUBST(kernel_fi)
  677: 
  678: #this breaks bindists
  679: #dnl replace srource directory by absolute value
  680: #if test $srcdir = "."; then srcdir=`pwd` 
  681: #fi
  682: 
  683: AC_SUBST(machine)
  684: AC_CONFIG_FILES([
  685: Makefile
  686: Makedist
  687: gforthmi
  688: vmgen
  689: machpc.fs
  690: envos.fs
  691: engine/Makefile
  692: doc/version.texi ])
  693: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  694: chmod +x gforthmi
  695: chmod +x vmgen
  696: test -d kernel||mkdir kernel]],[[]])
  697: AC_OUTPUT
  698: 

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