Annotation of gforth/configure.in, revision 1.94

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
1.20      anton       2: 
1.73      anton       3: #Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
1.20      anton       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
1.74      anton      19: #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.20      anton      20: 
1.34      anton      21: dnl We use some automake macros here,
                     22: dnl but don't use automake for creating Makefile.in
1.94    ! anton      23: AC_INIT(gforth,0.5.9-20021227,https://savannah.gnu.org/bugs/?func=addbug&group=gforth)
1.47      anton      24: #snapshots have numbers major.minor.release-YYYYMMDD
1.92      anton      25: #note that lexicographic ordering must be heeded.
1.47      anton      26: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.94    ! anton      27: UPDATED="27 December 2002"
1.84      anton      28: AC_SUBST(UPDATED)
1.94    ! anton      29: AC_CONFIG_HEADERS(engine/config.h)
        !            30: dnl AM_CYGWIN32
1.14      anton      31: 
1.92      anton      32: #default setting that may be changed later:
                     33: no_dynamic_default=0
                     34: 
1.1       anton      35: AC_ARG_ENABLE(force-reg,
                     36: [  --enable-force-reg    Use explicit register declarations if they appear in
                     37:                          the machine.h file. This can cause a good speedup,
                     38:                          but also incorrect code with some gcc versions on
                     39:                          some processors (default disabled).],
1.89      pazsan     40: 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)]))
1.1       anton      41: 
1.9       pazsan     42: AC_ARG_WITH(debug,
1.10      anton      43: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      44:   --without-debug  omits the -g switch and creates smaller images on
                     45:                    machines where "strip" has problems with gcc style
                     46:                    debugging informations.],
1.9       pazsan     47: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     48: 
1.79      pazsan     49: PEEPHOLE="yes"
                     50: AC_ARG_WITH(peephole,
                     51: [  --with-peephole     Enable peephole optimization (default)
                     52:   --without-peephole   disables peephole optimization. Creates smaller,
                     53:                        but slower images.],
                     54: PEEPHOLE="$withval")
1.82      anton      55: 
                     56: #currently we force direct threading this way.  Eventually we should
                     57: #setup in the arch and engine files right
1.79      pazsan     58: 
1.16      anton      59: CFLAGS=$CFLAGS
                     60: 
1.15      pazsan     61: AC_PROG_CC
                     62: 
1.92      anton      63: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan     64: 
1.15      pazsan     65: AC_SUBST(CC)
1.9       pazsan     66: AC_SUBST(DEBUGFLAG)
1.7       anton      67: 
1.92      anton      68: AC_MSG_CHECKING(gcc version)
                     69: gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
                     70: AC_MSG_RESULT($gcc_version)
                     71: if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
                     72: then
                     73:     no_dynamic_default=1
                     74:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
                     75: fi
                     76: 
1.10      anton      77: dnl the following macro produces a warning with autoconf-2.1
                     78: AC_CHECK_SIZEOF(char *)
                     79: case "$ac_cv_sizeof_char_p" in
                     80:   2)
                     81:     wordsize=16
                     82:     ;;
                     83:   4)
                     84:     wordsize=32
                     85:     ;;
                     86:   8)
                     87:     wordsize=64
                     88:     ;;
                     89: esac
1.9       pazsan     90: 
1.40      pazsan     91: AC_CHECK_SIZEOF(char)
1.23      pazsan     92: AC_CHECK_SIZEOF(short)
                     93: AC_CHECK_SIZEOF(int)
                     94: AC_CHECK_SIZEOF(long)
                     95: AC_CHECK_SIZEOF(long long)
                     96: 
1.92      anton      97: AC_MSG_CHECKING([for a C type for cells])
1.23      pazsan     98: ac_cv_int_type_cell=none
                     99: case "$ac_cv_sizeof_char_p" in
1.40      pazsan    100:   $ac_cv_sizeof_int)
                    101:     ac_cv_int_type_cell=int
                    102:     ;;
1.23      pazsan    103:   $ac_cv_sizeof_short)
                    104:     ac_cv_int_type_cell=short
                    105:     ;;
1.40      pazsan    106:   $ac_cv_sizeof_char)
                    107:     ac_cv_int_type_cell=char
1.23      pazsan    108:     ;;
                    109:   $ac_cv_sizeof_long)
                    110:     ac_cv_int_type_cell=long
                    111:     ;;
                    112:   $ac_cv_sizeof_long_long)
                    113:     ac_cv_int_type_cell="long long"
                    114:     ;;
                    115: esac
1.92      anton     116: AC_MSG_RESULT($ac_cv_int_type_cell)
1.89      pazsan    117: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
1.23      pazsan    118: 
1.92      anton     119: AC_MSG_CHECKING([for a C type for double-cells])
1.23      pazsan    120: ac_cv_int_type_double_cell=none
                    121: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    122:   $ac_cv_sizeof_short)
                    123:     ac_cv_int_type_double_cell=short
                    124:     ;;
                    125:   $ac_cv_sizeof_int)
                    126:     ac_cv_int_type_double_cell=int
                    127:     ;;
                    128:   $ac_cv_sizeof_long)
                    129:     ac_cv_int_type_double_cell=long
                    130:     ;;
                    131:   $ac_cv_sizeof_long_long)
                    132:     ac_cv_int_type_double_cell="long long"
                    133:     ;;
                    134: esac
1.92      anton     135: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.21      anton     136: if test "$ac_cv_int_type_double_cell" = none; then
1.92      anton     137:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
1.87      pazsan    138:        AC_LIBOBJ(dblsub)
1.89      pazsan    139:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
1.23      pazsan    140: else
1.92      anton     141:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.20      anton     142: fi
                    143: 
1.50      jwilke    144: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    145: OLDLDFLAGS=$LDFLAGS
                    146: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     147: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    148: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    149: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    150: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    151: AC_MSG_RESULT($ac_export_dynamic)
                    152: 
1.1       anton     153: #terminology is a bit unusual here: The host is the system on which
                    154: #gforth will run; the system on which configure will run is the `build'
                    155: AC_CANONICAL_HOST
                    156: case "$host_cpu" in
                    157:        hppa*)
1.34      anton     158:                machine=hppa
1.46      anton     159:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    160:                AC_LIBOBJ(../arch/hppa/cache)
1.50      jwilke    161:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     162:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     163:                ;;
                    164:        sparc*)
1.34      anton     165:                machine=sparc
1.1       anton     166:                ;;
1.31      anton     167:        i386)
1.34      anton     168:                machine=386
1.16      anton     169:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     170:                ;;
                    171:        i486)
1.34      anton     172:                machine=386
1.31      anton     173:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    174:                ;;
1.77      anton     175:        i*86)
1.34      anton     176:                machine=386
1.55      anton     177:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    178:                CFLAGS_1="$CFLAGS"
1.87      pazsan    179:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    180:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     181:                ;;
1.72      anton     182:        ia64*)
                    183:                machine=ia64
                    184:                ;;
1.26      pazsan    185:         m68k)
1.34      anton     186:                machine=m68k
1.32      pazsan    187:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    188:                if test "$host_os" = "nextstep3"
                    189:                then
1.87      pazsan    190:                        AC_LIBOBJ(termios)
1.32      pazsan    191:                fi
1.26      pazsan    192:                ;;
1.1       anton     193:        mips*)
1.34      anton     194:                machine=mips
1.92      anton     195:                #dynamic native code has the following problems on MIPS:
                    196:                #
                    197:                #1) J/JAL seems relocatable, but is are only
                    198:                #relocatable within a 256MB-segment.  While we try to
                    199:                #get the linker to arrange this, there is no guarantee
                    200:                #that this will succeed (and if the user uses a lot of
                    201:                #memory, it is likely to fail).
                    202:                #
                    203:                #2) The way we generate dynamic native code may
                    204:                #violate MIPS architectural restrictions (in
                    205:                #particular, the delay slots of LW, MFLO, etc.)
                    206:                #
                    207:                #Therefore we disable dynamic native code by default:
                    208:                no_dynamic_default=1
                    209:                AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
1.7       anton     210:                #link text and data segment into the same 256M region!
1.49      anton     211:                AC_MSG_CHECKING([whether the linker accepts -T])
                    212:                OLDLDFLAGS=$LDFLAGS
                    213:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
                    214:                AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
                    215:                test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
                    216:                AC_MSG_RESULT($ac_link_mips_t)
1.37      anton     217:                AC_MSG_CHECKING([whether the linker accepts -D])
                    218:                OLDLDFLAGS=$LDFLAGS
1.49      anton     219:                LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
1.37      anton     220:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
1.49      anton     221:                test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
1.37      anton     222:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     223:                ;;
1.9       pazsan    224:        alpha*)
1.34      anton     225:                machine=alpha
1.58      anton     226:                #full IEEE FP support for more uniformity across platforms:
                    227:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    228:                ;;
1.69      anton     229:        power*|rs6000)
1.34      anton     230:                machine=power
1.46      anton     231:                $srcdir/mkinstalldirs arch/power
1.87      pazsan    232:                AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
1.31      anton     233:                ;;
1.1       anton     234:        *)
1.92      anton     235:                AC_MSG_WARN([Using a generic machine description])
                    236:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                    237:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     238:                machine=generic
1.1       anton     239: esac
1.10      anton     240: AC_SUBST(host)
1.15      pazsan    241: AC_SUBST(ENGINE_FLAGS)
1.1       anton     242: 
1.88      pazsan    243: # Try if GCC understands -fno-cross-jump
                    244: 
                    245: CFLAGS_1="$CFLAGS"
                    246: CFLAGS="$CFLAGS -fno-cross-jump"
                    247: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
                    248: 
1.66      anton     249: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     250: AC_SUBST(asm_fs)
                    251: 
1.66      anton     252: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     253: AC_SUBST(disasm_fs)
                    254: 
1.39      pazsan    255: case "$host_os" in
                    256:        *win32)
                    257:                EXE=".exe"
1.88      pazsan    258:                DIRSEP="\\"
1.39      pazsan    259:                ;;
                    260:        *)
                    261:                EXE=""
1.88      pazsan    262:                DIRSEP="/"
1.39      pazsan    263:                ;;
                    264: esac
                    265: AC_SUBST(EXE)
1.88      pazsan    266: AC_SUBST(DIRSEP)
1.89      pazsan    267: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.39      pazsan    268: 
1.1       anton     269: dnl Now a little support for DOS/DJGCC
1.30      pazsan    270: AC_SUBST(GFORTH_EXE)
                    271: GFORTH_EXE=""
1.48      anton     272: AC_SUBST(GFORTHFAST_EXE)
                    273: GFORTHFAST_EXE=""
1.83      anton     274: AC_SUBST(GFORTHITC_EXE)
                    275: GFORTHITC_EXE=""
1.30      pazsan    276: AC_SUBST(GFORTHDITC_EXE)
                    277: GFORTHDITC_EXE=""
1.1       anton     278: 
1.24      anton     279: PATHSEP=":"
                    280: AC_SUBST(PATHSEP)
1.89      pazsan    281: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.27      anton     282: 
                    283: AC_SUBST(FORTHSIZES)
1.24      anton     284: 
1.79      pazsan    285: if test "$PEEPHOLE" = "yes"
                    286: then
                    287:    PEEPHOLEFLAG="true"
1.89      pazsan    288:    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
1.79      pazsan    289: else
                    290:    PEEPHOLEFLAG="false"
                    291: fi
                    292: AC_SUBST(PEEPHOLEFLAG)
                    293: 
1.1       anton     294: dnl copy commands for systems that don't have links
1.29      pazsan    295: AC_SUBST(LINK_KERNL)
                    296: LINK_KERNL=""
1.1       anton     297: 
                    298: #if test $host_os=dos
                    299: #then
                    300: #  echo Configuring for DOS!!!
                    301: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    302: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     303: #fi
                    304: 
                    305: dnl the following macro produces a warning with autoconf-2.1
                    306: AC_C_BIGENDIAN
1.23      pazsan    307: AC_SUBST(KERNEL)
1.1       anton     308: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    309: if test $ac_cv_c_bigendian = yes; then
                    310:   bytesex=b
1.23      pazsan    311:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     312: else
                    313:   bytesex=l
1.23      pazsan    314:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     315: fi
                    316: 
1.91      anton     317: #check how to do asm(".skip 16")
1.92      anton     318: AC_MSG_CHECKING([if and how we can waste code space])
                    319: skipcode=no
1.91      anton     320: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    321: do
                    322:        AC_TRY_RUN(
                    323: int foo(int);
                    324: main()
                    325: {
                    326:   exit(foo(0)!=16);
                    327: }
                    328: int foo(int x)
                    329: {
                    330:   if (x) {
                    331:   label1:
                    332:     asm("$i");
                    333:   label2:
                    334:   }
                    335:   return (&&label2)-(&&label1);
                    336: }
1.92      anton     337:        ,skipcode=$i; break
                    338:        ,,)
1.91      anton     339: done   
1.92      anton     340: AC_MSG_RESULT($skipcode)
                    341: if test "$skipcode" = no
                    342: then 
                    343:     no_dynamic_default=1
                    344:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
                    345:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
                    346: else
                    347:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
                    348: fi
1.91      anton     349: 
1.92      anton     350: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     351: 
1.1       anton     352: dnl Checks for programs.
                    353: AC_PROG_LN_S
1.34      anton     354: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     355: 
                    356: dnl Checks for library functions
1.2       anton     357: dnl This check is just for making later checks link with libm.
                    358: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    359: AC_CHECK_LIB(m,asin)
1.31      anton     360: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    361: if test "$host_os" != "nextstep3"
                    362: then
                    363:        AC_FUNC_MEMCMP
                    364: fi
1.25      pazsan    365: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.93      anton     366: AC_CHECK_FUNCS(dlopen sys_siglist getrusage fseeko ftello)
                    367: AC_TYPE_OFF_T
1.19      anton     368: AC_DECL_SYS_SIGLIST
1.92      anton     369: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
1.90      anton     370: AC_CHECK_FUNCS(expm1 log1p)
                    371: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     372: dnl No check for select, because our replacement is no good under
                    373: dnl anything but DOS
1.62      anton     374: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     375: AC_FUNC_FNMATCH
1.87      pazsan    376: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     377: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     378: AM_PATH_LISPDIR
1.1       anton     379: 
1.23      pazsan    380: kernel_fi=kernl${wordsize}${bytesex}.fi
                    381: AC_SUBST(kernel_fi)
1.50      jwilke    382: 
1.76      anton     383: #this breaks bindists
                    384: #dnl replace srource directory by absolute value
                    385: #if test $srcdir = "."; then srcdir=`pwd` 
                    386: #fi
1.8       anton     387: 
1.34      anton     388: AC_SUBST(machine)
                    389: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     390: AC_OUTPUT([
                    391: Makefile
1.45      pazsan    392: Makedist
1.43      anton     393: gforthmi
1.80      anton     394: vmgen
1.79      pazsan    395: machpc.fs
1.35      anton     396: engine/Makefile
1.44      anton     397: doc/version.texi ],
                    398: echo timestamp > stamp-h
1.43      anton     399: chmod +x gforthmi
1.80      anton     400: chmod +x vmgen
1.44      anton     401: test -d kernel||mkdir kernel)
                    402: 

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