Annotation of gforth/configure.in, revision 1.92

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: 
1.31      anton      21: AC_INIT(engine/engine.c)
1.34      anton      22: 
                     23: dnl We use some automake macros here,
                     24: dnl but don't use automake for creating Makefile.in
1.86      anton      25: AM_INIT_AUTOMAKE(gforth,0.5.9-20020901)
1.47      anton      26: #snapshots have numbers major.minor.release-YYYYMMDD
1.92    ! anton      27: #note that lexicographic ordering must be heeded.
1.47      anton      28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
1.86      anton      29: UPDATED="1 September 2002"
1.84      anton      30: AC_SUBST(UPDATED)
1.34      anton      31: AM_CONFIG_HEADER(engine/config.h)
1.57      anton      32: #AM_CYGWIN32
1.14      anton      33: 
1.92    ! anton      34: #default setting that may be changed later:
        !            35: no_dynamic_default=0
        !            36: 
1.1       anton      37: AC_ARG_ENABLE(force-reg,
                     38: [  --enable-force-reg    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).],
1.89      pazsan     42: 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      43: 
1.9       pazsan     44: AC_ARG_WITH(debug,
1.10      anton      45: [  --with-debug     specifies option -g to compile with debug info (default)
1.27      anton      46:   --without-debug  omits the -g switch and creates smaller images on
                     47:                    machines where "strip" has problems with gcc style
                     48:                    debugging informations.],
1.9       pazsan     49: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
                     50: 
1.79      pazsan     51: PEEPHOLE="yes"
                     52: AC_ARG_WITH(peephole,
                     53: [  --with-peephole     Enable peephole optimization (default)
                     54:   --without-peephole   disables peephole optimization. Creates smaller,
                     55:                        but slower images.],
                     56: PEEPHOLE="$withval")
1.82      anton      57: 
                     58: #currently we force direct threading this way.  Eventually we should
                     59: #setup in the arch and engine files right
1.79      pazsan     60: 
1.16      anton      61: CFLAGS=$CFLAGS
                     62: 
1.15      pazsan     63: AC_PROG_CC
                     64: 
1.92    ! anton      65: test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
1.9       pazsan     66: 
1.15      pazsan     67: AC_SUBST(CC)
1.9       pazsan     68: AC_SUBST(DEBUGFLAG)
1.7       anton      69: 
1.92    ! anton      70: AC_MSG_CHECKING(gcc version)
        !            71: gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`
        !            72: AC_MSG_RESULT($gcc_version)
        !            73: if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null
        !            74: then
        !            75:     no_dynamic_default=1
        !            76:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
        !            77: fi
        !            78: 
1.10      anton      79: dnl the following macro produces a warning with autoconf-2.1
                     80: AC_CHECK_SIZEOF(char *)
                     81: case "$ac_cv_sizeof_char_p" in
                     82:   2)
                     83:     wordsize=16
                     84:     ;;
                     85:   4)
                     86:     wordsize=32
                     87:     ;;
                     88:   8)
                     89:     wordsize=64
                     90:     ;;
                     91: esac
1.9       pazsan     92: 
1.40      pazsan     93: AC_CHECK_SIZEOF(char)
1.23      pazsan     94: AC_CHECK_SIZEOF(short)
                     95: AC_CHECK_SIZEOF(int)
                     96: AC_CHECK_SIZEOF(long)
                     97: AC_CHECK_SIZEOF(long long)
                     98: 
1.92    ! anton      99: AC_MSG_CHECKING([for a C type for cells])
1.23      pazsan    100: ac_cv_int_type_cell=none
                    101: case "$ac_cv_sizeof_char_p" in
1.40      pazsan    102:   $ac_cv_sizeof_int)
                    103:     ac_cv_int_type_cell=int
                    104:     ;;
1.23      pazsan    105:   $ac_cv_sizeof_short)
                    106:     ac_cv_int_type_cell=short
                    107:     ;;
1.40      pazsan    108:   $ac_cv_sizeof_char)
                    109:     ac_cv_int_type_cell=char
1.23      pazsan    110:     ;;
                    111:   $ac_cv_sizeof_long)
                    112:     ac_cv_int_type_cell=long
                    113:     ;;
                    114:   $ac_cv_sizeof_long_long)
                    115:     ac_cv_int_type_cell="long long"
                    116:     ;;
                    117: esac
1.92    ! anton     118: AC_MSG_RESULT($ac_cv_int_type_cell)
1.89      pazsan    119: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
1.23      pazsan    120: 
1.92    ! anton     121: AC_MSG_CHECKING([for a C type for double-cells])
1.23      pazsan    122: ac_cv_int_type_double_cell=none
                    123: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
                    124:   $ac_cv_sizeof_short)
                    125:     ac_cv_int_type_double_cell=short
                    126:     ;;
                    127:   $ac_cv_sizeof_int)
                    128:     ac_cv_int_type_double_cell=int
                    129:     ;;
                    130:   $ac_cv_sizeof_long)
                    131:     ac_cv_int_type_double_cell=long
                    132:     ;;
                    133:   $ac_cv_sizeof_long_long)
                    134:     ac_cv_int_type_double_cell="long long"
                    135:     ;;
                    136: esac
1.92    ! anton     137: AC_MSG_RESULT($ac_cv_int_type_double_cell)
1.21      anton     138: if test "$ac_cv_int_type_double_cell" = none; then
1.92    ! anton     139:        AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
1.87      pazsan    140:        AC_LIBOBJ(dblsub)
1.89      pazsan    141:        AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
1.23      pazsan    142: else
1.92    ! anton     143:        AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
1.20      anton     144: fi
                    145: 
1.50      jwilke    146: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
                    147: OLDLDFLAGS=$LDFLAGS
                    148: LDFLAGS="$LDFLAGS -export-dynamic"
1.69      anton     149: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
                    150: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
                    151: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
1.50      jwilke    152: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
                    153: AC_MSG_RESULT($ac_export_dynamic)
                    154: 
1.1       anton     155: #terminology is a bit unusual here: The host is the system on which
                    156: #gforth will run; the system on which configure will run is the `build'
                    157: AC_CANONICAL_HOST
                    158: case "$host_cpu" in
                    159:        hppa*)
1.34      anton     160:                machine=hppa
1.46      anton     161:                $srcdir/mkinstalldirs arch/hppa
1.87      pazsan    162:                AC_LIBOBJ(../arch/hppa/cache)
1.50      jwilke    163:                LDFLAGS="$LDFLAGS -Xlinker -N"
1.47      anton     164:                LIBS="$LIBS -L/lib/pa1.1/"
1.1       anton     165:                ;;
                    166:        sparc*)
1.34      anton     167:                machine=sparc
1.1       anton     168:                ;;
1.31      anton     169:        i386)
1.34      anton     170:                machine=386
1.16      anton     171:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.31      anton     172:                ;;
                    173:        i486)
1.34      anton     174:                machine=386
1.31      anton     175:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
                    176:                ;;
1.77      anton     177:        i*86)
1.34      anton     178:                machine=386
1.55      anton     179:                CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.56      pazsan    180:                CFLAGS_1="$CFLAGS"
1.87      pazsan    181:                CFLAGS="$CFLAGS -march=pentium"
1.56      pazsan    182:                AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
1.1       anton     183:                ;;
1.72      anton     184:        ia64*)
                    185:                machine=ia64
                    186:                ;;
1.26      pazsan    187:         m68k)
1.34      anton     188:                machine=m68k
1.32      pazsan    189:                CFLAGS="$CFLAGS -fomit-frame-pointer"
                    190:                if test "$host_os" = "nextstep3"
                    191:                then
1.87      pazsan    192:                        AC_LIBOBJ(termios)
1.32      pazsan    193:                fi
1.26      pazsan    194:                ;;
1.1       anton     195:        mips*)
1.34      anton     196:                machine=mips
1.92    ! anton     197:                #dynamic native code has the following problems on MIPS:
        !           198:                #
        !           199:                #1) J/JAL seems relocatable, but is are only
        !           200:                #relocatable within a 256MB-segment.  While we try to
        !           201:                #get the linker to arrange this, there is no guarantee
        !           202:                #that this will succeed (and if the user uses a lot of
        !           203:                #memory, it is likely to fail).
        !           204:                #
        !           205:                #2) The way we generate dynamic native code may
        !           206:                #violate MIPS architectural restrictions (in
        !           207:                #particular, the delay slots of LW, MFLO, etc.)
        !           208:                #
        !           209:                #Therefore we disable dynamic native code by default:
        !           210:                no_dynamic_default=1
        !           211:                AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
1.7       anton     212:                #link text and data segment into the same 256M region!
1.49      anton     213:                AC_MSG_CHECKING([whether the linker accepts -T])
                    214:                OLDLDFLAGS=$LDFLAGS
                    215:                LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
                    216:                AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
                    217:                test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
                    218:                AC_MSG_RESULT($ac_link_mips_t)
1.37      anton     219:                AC_MSG_CHECKING([whether the linker accepts -D])
                    220:                OLDLDFLAGS=$LDFLAGS
1.49      anton     221:                LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
1.37      anton     222:                AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
1.49      anton     223:                test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
1.37      anton     224:                AC_MSG_RESULT($ac_link_mips_d)
1.1       anton     225:                ;;
1.9       pazsan    226:        alpha*)
1.34      anton     227:                machine=alpha
1.58      anton     228:                #full IEEE FP support for more uniformity across platforms:
                    229:                CFLAGS="$CFLAGS -mieee"
1.9       pazsan    230:                ;;
1.69      anton     231:        power*|rs6000)
1.34      anton     232:                machine=power
1.46      anton     233:                $srcdir/mkinstalldirs arch/power
1.87      pazsan    234:                AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
1.31      anton     235:                ;;
1.1       anton     236:        *)
1.92    ! anton     237:                AC_MSG_WARN([Using a generic machine description])
        !           238:                AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
        !           239:                AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
1.34      anton     240:                machine=generic
1.1       anton     241: esac
1.10      anton     242: AC_SUBST(host)
1.15      pazsan    243: AC_SUBST(ENGINE_FLAGS)
1.1       anton     244: 
1.88      pazsan    245: # Try if GCC understands -fno-cross-jump
                    246: 
                    247: CFLAGS_1="$CFLAGS"
                    248: CFLAGS="$CFLAGS -fno-cross-jump"
                    249: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
                    250: 
1.66      anton     251: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
1.61      anton     252: AC_SUBST(asm_fs)
                    253: 
1.66      anton     254: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
1.61      anton     255: AC_SUBST(disasm_fs)
                    256: 
1.39      pazsan    257: case "$host_os" in
                    258:        *win32)
                    259:                EXE=".exe"
1.88      pazsan    260:                DIRSEP="\\"
1.39      pazsan    261:                ;;
                    262:        *)
                    263:                EXE=""
1.88      pazsan    264:                DIRSEP="/"
1.39      pazsan    265:                ;;
                    266: esac
                    267: AC_SUBST(EXE)
1.88      pazsan    268: AC_SUBST(DIRSEP)
1.89      pazsan    269: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
1.39      pazsan    270: 
1.1       anton     271: dnl Now a little support for DOS/DJGCC
1.30      pazsan    272: AC_SUBST(GFORTH_EXE)
                    273: GFORTH_EXE=""
1.48      anton     274: AC_SUBST(GFORTHFAST_EXE)
                    275: GFORTHFAST_EXE=""
1.83      anton     276: AC_SUBST(GFORTHITC_EXE)
                    277: GFORTHITC_EXE=""
1.30      pazsan    278: AC_SUBST(GFORTHDITC_EXE)
                    279: GFORTHDITC_EXE=""
1.1       anton     280: 
1.24      anton     281: PATHSEP=":"
                    282: AC_SUBST(PATHSEP)
1.89      pazsan    283: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
1.27      anton     284: 
                    285: AC_SUBST(FORTHSIZES)
1.24      anton     286: 
1.79      pazsan    287: if test "$PEEPHOLE" = "yes"
                    288: then
                    289:    PEEPHOLEFLAG="true"
1.89      pazsan    290:    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
1.79      pazsan    291: else
                    292:    PEEPHOLEFLAG="false"
                    293: fi
                    294: AC_SUBST(PEEPHOLEFLAG)
                    295: 
1.1       anton     296: dnl copy commands for systems that don't have links
1.29      pazsan    297: AC_SUBST(LINK_KERNL)
                    298: LINK_KERNL=""
1.1       anton     299: 
                    300: #if test $host_os=dos
                    301: #then
                    302: #  echo Configuring for DOS!!!
                    303: #  MAKE_EXE="coff2exe gforth"
1.29      pazsan    304: #  LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
1.1       anton     305: #fi
                    306: 
                    307: dnl the following macro produces a warning with autoconf-2.1
                    308: AC_C_BIGENDIAN
1.23      pazsan    309: AC_SUBST(KERNEL)
1.1       anton     310: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    311: if test $ac_cv_c_bigendian = yes; then
                    312:   bytesex=b
1.23      pazsan    313:   KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     314: else
                    315:   bytesex=l
1.23      pazsan    316:   KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     317: fi
                    318: 
1.91      anton     319: #check how to do asm(".skip 16")
1.92    ! anton     320: AC_MSG_CHECKING([if and how we can waste code space])
        !           321: skipcode=no
1.91      anton     322: for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
                    323: do
                    324:        AC_TRY_RUN(
                    325: int foo(int);
                    326: main()
                    327: {
                    328:   exit(foo(0)!=16);
                    329: }
                    330: int foo(int x)
                    331: {
                    332:   if (x) {
                    333:   label1:
                    334:     asm("$i");
                    335:   label2:
                    336:   }
                    337:   return (&&label2)-(&&label1);
                    338: }
1.92    ! anton     339:        ,skipcode=$i; break
        !           340:        ,,)
1.91      anton     341: done   
1.92    ! anton     342: AC_MSG_RESULT($skipcode)
        !           343: if test "$skipcode" = no
        !           344: then 
        !           345:     no_dynamic_default=1
        !           346:     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
        !           347:     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))
        !           348: else
        !           349:     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
        !           350: fi
1.91      anton     351: 
1.92    ! anton     352: AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
1.91      anton     353: 
1.1       anton     354: dnl Checks for programs.
                    355: AC_PROG_LN_S
1.34      anton     356: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
1.1       anton     357: 
                    358: dnl Checks for library functions
1.2       anton     359: dnl This check is just for making later checks link with libm.
                    360: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    361: AC_CHECK_LIB(m,asin)
1.31      anton     362: AC_CHECK_LIB(dl,dlopen)
1.32      pazsan    363: if test "$host_os" != "nextstep3"
                    364: then
                    365:        AC_FUNC_MEMCMP
                    366: fi
1.25      pazsan    367: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
1.71      anton     368: AC_CHECK_FUNCS(dlopen sys_siglist getrusage)
1.19      anton     369: AC_DECL_SYS_SIGLIST
1.92    ! anton     370: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
1.90      anton     371: AC_CHECK_FUNCS(expm1 log1p)
                    372: AC_REPLACE_FUNCS(rint ecvt)
1.1       anton     373: dnl No check for select, because our replacement is no good under
                    374: dnl anything but DOS
1.62      anton     375: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
1.63      anton     376: AC_FUNC_FNMATCH
1.87      pazsan    377: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
1.28      anton     378: AC_CHECK_FUNCS(mmap sysconf getpagesize)
1.34      anton     379: AM_PATH_LISPDIR
1.1       anton     380: 
1.23      pazsan    381: kernel_fi=kernl${wordsize}${bytesex}.fi
                    382: AC_SUBST(kernel_fi)
1.50      jwilke    383: 
1.76      anton     384: #this breaks bindists
                    385: #dnl replace srource directory by absolute value
                    386: #if test $srcdir = "."; then srcdir=`pwd` 
                    387: #fi
1.8       anton     388: 
1.34      anton     389: AC_SUBST(machine)
                    390: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
1.31      anton     391: AC_OUTPUT([
                    392: Makefile
1.45      pazsan    393: Makedist
1.43      anton     394: gforthmi
1.80      anton     395: vmgen
1.79      pazsan    396: machpc.fs
1.35      anton     397: engine/Makefile
1.44      anton     398: doc/version.texi ],
                    399: echo timestamp > stamp-h
1.43      anton     400: chmod +x gforthmi
1.80      anton     401: chmod +x vmgen
1.44      anton     402: test -d kernel||mkdir kernel)
                    403: 

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