File:  [gforth] / gforth / configure.in
Revision 1.96: download - view: text, annotated - select for diffs
Thu Jan 2 09:38:22 2003 UTC (16 years, 9 months ago) by anton
Branches: MAIN
CVS tags: HEAD
feature test macros now defined in configure.in (so the tests see them) instead
  of engine/forth.h
Testing for size of off_t

    1: dnl Process this file with autoconf to produce a configure script.
    2: 
    3: #Copyright (C) 1995,1996,1997,1998,2000 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: dnl We use some automake macros here,
   22: dnl but don't use automake for creating Makefile.in
   23: AC_INIT([gforth],[0.5.9-20021227],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
   24: #snapshots have numbers major.minor.release-YYYYMMDD
   25: #note that lexicographic ordering must be heeded.
   26: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
   27: UPDATED="27 December 2002"
   28: AC_SUBST(UPDATED)
   29: AC_CONFIG_HEADERS(engine/config.h)
   30: 
   31: #default setting that may be changed later:
   32: no_dynamic_default=0
   33: 
   34: AC_ARG_ENABLE(force-reg,
   35: [  --enable-force-reg	  Use explicit register declarations if they appear in
   36: 			  the machine.h file. This can cause a good speedup,
   37: 			  but also incorrect code with some gcc versions on
   38: 			  some processors (default disabled).],
   39: 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)]))
   40: 
   41: AC_ARG_WITH(debug,
   42: [  --with-debug     specifies option -g to compile with debug info (default)
   43:   --without-debug  omits the -g switch and creates smaller images on
   44:                    machines where "strip" has problems with gcc style
   45:                    debugging informations.],
   46: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   47: 
   48: PEEPHOLE="yes"
   49: AC_ARG_WITH(peephole,
   50: [  --with-peephole	Enable peephole optimization (default)
   51:   --without-peephole	disables peephole optimization. Creates smaller,
   52: 			but slower images.],
   53: PEEPHOLE="$withval")
   54: 
   55: #set up feature test macros, so the tests get them right:
   56: # turn on all POSIX, SUSv3, and GNU features if available
   57: AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
   58: AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
   59: AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
   60: AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
   61: # turn on large file support with 64-bit off_t where available
   62: AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
   63: AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
   64: 
   65: #currently we force direct threading this way.  Eventually we should
   66: #setup in the arch and engine files right
   67: 
   68: CFLAGS=$CFLAGS
   69: 
   70: AC_PROG_CC
   71: 
   72: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
   73: 
   74: AC_SUBST(CC)
   75: AC_SUBST(DEBUGFLAG)
   76: 
   77: AC_MSG_CHECKING(gcc version)
   78: gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
   79: AC_MSG_RESULT($gcc_version)
   80: if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
   81: then
   82:     no_dynamic_default=1
   83:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
   84: fi
   85: 
   86: dnl the following macro produces a warning with autoconf-2.1
   87: AC_CHECK_SIZEOF(char *)
   88: case "$ac_cv_sizeof_char_p" in
   89:   2)
   90:     wordsize=16
   91:     ;;
   92:   4)
   93:     wordsize=32
   94:     ;;
   95:   8)
   96:     wordsize=64
   97:     ;;
   98: esac
   99: 
  100: AC_CHECK_SIZEOF(char)
  101: AC_CHECK_SIZEOF(short)
  102: AC_CHECK_SIZEOF(int)
  103: AC_CHECK_SIZEOF(long)
  104: AC_CHECK_SIZEOF(long long)
  105: 
  106: AC_MSG_CHECKING([for a C type for cells])
  107: ac_cv_int_type_cell=none
  108: case "$ac_cv_sizeof_char_p" in
  109:   $ac_cv_sizeof_int)
  110:     ac_cv_int_type_cell=int
  111:     ;;
  112:   $ac_cv_sizeof_short)
  113:     ac_cv_int_type_cell=short
  114:     ;;
  115:   $ac_cv_sizeof_char)
  116:     ac_cv_int_type_cell=char
  117:     ;;
  118:   $ac_cv_sizeof_long)
  119:     ac_cv_int_type_cell=long
  120:     ;;
  121:   $ac_cv_sizeof_long_long)
  122:     ac_cv_int_type_cell="long long"
  123:     ;;
  124: esac
  125: AC_MSG_RESULT($ac_cv_int_type_cell)
  126: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
  127: 
  128: AC_MSG_CHECKING([for a C type for double-cells])
  129: ac_cv_int_type_double_cell=none
  130: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
  131:   $ac_cv_sizeof_short)
  132:     ac_cv_int_type_double_cell=short
  133:     ;;
  134:   $ac_cv_sizeof_int)
  135:     ac_cv_int_type_double_cell=int
  136:     ;;
  137:   $ac_cv_sizeof_long)
  138:     ac_cv_int_type_double_cell=long
  139:     ;;
  140:   $ac_cv_sizeof_long_long)
  141:     ac_cv_int_type_double_cell="long long"
  142:     ;;
  143: esac
  144: AC_MSG_RESULT($ac_cv_int_type_double_cell)
  145: if test "$ac_cv_int_type_double_cell" = none; then
  146: 	AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
  147: 	AC_LIBOBJ(dblsub)
  148: 	AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
  149: else
  150: 	AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
  151: fi
  152: 
  153: AC_TYPE_OFF_T
  154: AC_CHECK_SIZEOF(off_t)
  155: test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
  156: ac_small_off_t=$?
  157: AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
  158: 
  159: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
  160: OLDLDFLAGS=$LDFLAGS
  161: LDFLAGS="$LDFLAGS -export-dynamic"
  162: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
  163: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
  164: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
  165: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
  166: AC_MSG_RESULT($ac_export_dynamic)
  167: 
  168: #terminology is a bit unusual here: The host is the system on which
  169: #gforth will run; the system on which configure will run is the `build'
  170: AC_CANONICAL_HOST
  171: case "$host_cpu" in
  172: 	hppa*)
  173: 		machine=hppa
  174: 		$srcdir/mkinstalldirs arch/hppa
  175: 		AC_LIBOBJ(../arch/hppa/cache)
  176: 		LDFLAGS="$LDFLAGS -Xlinker -N"
  177: 		LIBS="$LIBS -L/lib/pa1.1/"
  178: 		;;
  179: 	sparc*)
  180: 		machine=sparc
  181: 		;;
  182: 	i386)
  183: 		machine=386
  184: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  185: 		;;
  186: 	i486)
  187: 		machine=386
  188: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
  189: 		;;
  190: 	i*86)
  191: 		machine=386
  192: 		CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
  193: 		CFLAGS_1="$CFLAGS"
  194: 		CFLAGS="$CFLAGS -march=pentium"
  195: 		AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
  196: 		;;
  197: 	ia64*)
  198: 		machine=ia64
  199: 		;;
  200:         m68k)
  201: 		machine=m68k
  202: 		CFLAGS="$CFLAGS -fomit-frame-pointer"
  203: 		if test "$host_os" = "nextstep3"
  204: 		then
  205: 			AC_LIBOBJ(termios)
  206: 		fi
  207: 		;;
  208: 	mips*)
  209: 		machine=mips
  210: 		#dynamic native code has the following problems on MIPS:
  211: 		#
  212: 		#1) J/JAL seems relocatable, but is are only
  213: 		#relocatable within a 256MB-segment.  While we try to
  214: 		#get the linker to arrange this, there is no guarantee
  215: 		#that this will succeed (and if the user uses a lot of
  216: 		#memory, it is likely to fail).
  217: 		#
  218: 		#2) The way we generate dynamic native code may
  219: 		#violate MIPS architectural restrictions (in
  220: 		#particular, the delay slots of LW, MFLO, etc.)
  221: 		#
  222: 		#Therefore we disable dynamic native code by default:
  223: 		no_dynamic_default=1
  224: 		AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
  225: 		#link text and data segment into the same 256M region!
  226: 		AC_MSG_CHECKING([whether the linker accepts -T])
  227: 		OLDLDFLAGS=$LDFLAGS
  228: 		LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
  229: 		AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
  230: 		test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
  231: 		AC_MSG_RESULT($ac_link_mips_t)
  232: 		AC_MSG_CHECKING([whether the linker accepts -D])
  233: 		OLDLDFLAGS=$LDFLAGS
  234: 		LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
  235: 		AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
  236: 		test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
  237: 		AC_MSG_RESULT($ac_link_mips_d)
  238: 		;;
  239: 	alpha*)
  240: 		machine=alpha
  241: 		#full IEEE FP support for more uniformity across platforms:
  242: 		CFLAGS="$CFLAGS -mieee"
  243: 		;;
  244: 	power*|rs6000)
  245: 		machine=power
  246: 		$srcdir/mkinstalldirs arch/power
  247: 		AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
  248: 		;;
  249: 	*)
  250: 		AC_MSG_WARN([Using a generic machine description])
  251: 		AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
  252: 		AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
  253: 		machine=generic
  254: esac
  255: AC_SUBST(host)
  256: AC_SUBST(ENGINE_FLAGS)
  257: 
  258: # Try if GCC understands -fno-cross-jump
  259: 
  260: CFLAGS_1="$CFLAGS"
  261: CFLAGS="$CFLAGS -fno-cross-jump"
  262: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
  263: 
  264: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
  265: AC_SUBST(asm_fs)
  266: 
  267: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
  268: AC_SUBST(disasm_fs)
  269: 
  270: case "$host_os" in
  271: 	*win32)
  272: 		EXE=".exe"
  273: 		DIRSEP="\\"
  274: 		;;
  275: 	*)
  276: 		EXE=""
  277: 		DIRSEP="/"
  278: 		;;
  279: esac
  280: AC_SUBST(EXE)
  281: AC_SUBST(DIRSEP)
  282: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
  283: 
  284: dnl Now a little support for DOS/DJGCC
  285: AC_SUBST(GFORTH_EXE)
  286: GFORTH_EXE=""
  287: AC_SUBST(GFORTHFAST_EXE)
  288: GFORTHFAST_EXE=""
  289: AC_SUBST(GFORTHITC_EXE)
  290: GFORTHITC_EXE=""
  291: AC_SUBST(GFORTHDITC_EXE)
  292: GFORTHDITC_EXE=""
  293: 
  294: PATHSEP=":"
  295: AC_SUBST(PATHSEP)
  296: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
  297: 
  298: AC_SUBST(FORTHSIZES)
  299: 
  300: if test "$PEEPHOLE" = "yes"
  301: then
  302:    PEEPHOLEFLAG="true"
  303:    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
  304: else
  305:    PEEPHOLEFLAG="false"
  306: fi
  307: AC_SUBST(PEEPHOLEFLAG)
  308: 
  309: dnl copy commands for systems that don't have links
  310: AC_SUBST(LINK_KERNL)
  311: LINK_KERNL=""
  312: 
  313: #if test $host_os=dos
  314: #then
  315: #  echo Configuring for DOS!!!
  316: #  MAKE_EXE="coff2exe gforth"
  317: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
  318: #fi
  319: 
  320: dnl the following macro produces a warning with autoconf-2.1
  321: AC_C_BIGENDIAN
  322: AC_SUBST(KERNEL)
  323: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
  324: if test $ac_cv_c_bigendian = yes; then
  325:   bytesex=b
  326:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
  327: else
  328:   bytesex=l
  329:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
  330: fi
  331: 
  332: #check how to do asm(".skip 16")
  333: AC_MSG_CHECKING([if and how we can waste code space])
  334: skipcode=no
  335: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
  336: do
  337: 	AC_TRY_RUN(
  338: int foo(int);
  339: main()
  340: {
  341:   exit(foo(0)!=16);
  342: }
  343: int foo(int x)
  344: {
  345:   if (x) {
  346:   label1:
  347:     asm("$i");
  348:   label2:
  349:   }
  350:   return (&&label2)-(&&label1);
  351: }
  352: 	,skipcode=$i; break
  353: 	,,)
  354: done	
  355: AC_MSG_RESULT($skipcode)
  356: if test "$skipcode" = no
  357: then 
  358:     no_dynamic_default=1
  359:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
  360:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
  361: else
  362:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
  363: fi
  364: 
  365: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
  366: 
  367: dnl Checks for programs.
  368: AC_PROG_LN_S
  369: AC_PROG_INSTALL
  370: 
  371: dnl Checks for library functions
  372: dnl This check is just for making later checks link with libm.
  373: dnl using sin here is no good idea since it is built-into gcc and typechecked
  374: AC_CHECK_LIB(m,asin)
  375: AC_CHECK_LIB(dl,dlopen)
  376: if test "$host_os" != "nextstep3"
  377: then
  378: 	AC_FUNC_MEMCMP
  379: fi
  380: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
  381: AC_CHECK_FUNCS(dlopen sys_siglist getrusage fseeko ftello)
  382: AC_DECL_SYS_SIGLIST
  383: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
  384: AC_CHECK_FUNCS(expm1 log1p)
  385: AC_REPLACE_FUNCS(rint ecvt)
  386: dnl No check for select, because our replacement is no good under
  387: dnl anything but DOS
  388: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
  389: AC_FUNC_FNMATCH
  390: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
  391: AC_CHECK_FUNCS(mmap sysconf getpagesize)
  392: AM_PATH_LISPDIR
  393: 
  394: kernel_fi=kernl${wordsize}${bytesex}.fi
  395: AC_SUBST(kernel_fi)
  396: 
  397: #this breaks bindists
  398: #dnl replace srource directory by absolute value
  399: #if test $srcdir = "."; then srcdir=`pwd` 
  400: #fi
  401: 
  402: AC_SUBST(machine)
  403: AC_CONFIG_FILES([
  404: Makefile
  405: Makedist
  406: gforthmi
  407: vmgen
  408: machpc.fs
  409: engine/Makefile
  410: doc/version.texi ])
  411: AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
  412: chmod +x gforthmi
  413: chmod +x vmgen
  414: test -d kernel||mkdir kernel]],[[]])
  415: AC_OUTPUT
  416: 

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