Annotation of gforth/configure.in, revision 1.9

1.1       anton       1: dnl Process this file with autoconf to produce a configure script.
                      2: AC_INIT(engine.c)
                      3: 
                      4: AC_ARG_ENABLE(force-reg,
                      5: [  --enable-force-reg    Use explicit register declarations if they appear in
                      6:                          the machine.h file. This can cause a good speedup,
                      7:                          but also incorrect code with some gcc versions on
                      8:                          some processors (default disabled).],
                      9: 
                     10: AC_DEFINE(FORCE_REG))
                     11: dnl this is not quite according to the autoconf manual, it causes a replacement
                     12: AC_ARG_ENABLE(direct-threaded,
                     13: [  --enable-direct-threaded    Force direct threading. This may not work on
                     14:                                some machines and may cause slowdown on others.
                     15:                                (default processor-dependent)],
                     16: AC_DEFINE(DIRECT_THREADED))
                     17: AC_ARG_ENABLE(indirect-threaded,
                     18: [  --enable-indirect-threaded  Force indirect threading. This can cause a
                     19:                                slowdown on some machines.
                     20:                                (default processor-dependent)],
                     21: AC_DEFINE(INDIRECT_THREADED))
                     22: 
1.9     ! pazsan     23: AC_ARG_WITH(debug,
        !            24: [  --with-debug     specifys option -g to compile with debug info (default)
        !            25:    --without-debug  omits the -g switch and creates smaller images on
        !            26:                     machines where "strip" has problems with gcc style
        !            27:                     debugging informations.],
        !            28: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
        !            29: 
        !            30: 
1.7       anton      31: AC_SUBST(GCCLDFLAGS)
1.9     ! pazsan     32: AC_SUBST(DEBUGFLAG)
1.7       anton      33: 
1.9     ! pazsan     34: wordsize=32
        !            35: 
1.1       anton      36: #terminology is a bit unusual here: The host is the system on which
                     37: #gforth will run; the system on which configure will run is the `build'
                     38: AC_CANONICAL_HOST
                     39: case "$host_cpu" in
                     40:        hppa*)
                     41:                mach_h=hppa
1.3       pazsan     42:                LIBOBJS="cache.o"
1.6       pazsan     43:                LDFLAGS="-Xlinker -N"
                     44:                LIBS="-L/lib/pa1.1/"
1.1       anton      45:                ;;
                     46:        sparc*)
                     47:                mach_h=sparc
                     48:                ;;
                     49:        i386|i486|i586)
                     50:                mach_h=386
1.9     ! pazsan     51:                CFLAGS="-fforce-mem -fforce-addr -fomit-frame-pointer"
1.1       anton      52:                #!! direct/indirect threading switch
                     53:                #!! -m486 flag
                     54:                ;;
                     55:        m68*)
                     56:                mach_h=m68k
                     57:                ;;
                     58:        mips*)
                     59:                mach_h=mips
1.7       anton      60:                #link text and data segment into the same 256M region!
                     61:                GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
                     62:                #this works on Ultrix, but not on Irix
                     63:                #for now use indirect threading under Irix
1.1       anton      64:                ;;
1.9     ! pazsan     65:        alpha*)
        !            66:                mach_h=alpha
        !            67:                wordsize=64
        !            68:                echo Very Preliminary Support for Alpha!!!
        !            69:                ;;
1.1       anton      70:        *)
                     71:                echo "No direct threading support for $host_cpu, using indirect threading."
                     72:                echo "Using a generic 32-bit machine description. It will only work if char * AND"
                     73:                echo "long values have 32 bits."
                     74:                echo "I'll assume that C floats and doubles are represented by IEEE single and"
                     75:                echo "double numbers. If this is not so, SF@ etc. will not work correctly."
                     76:                mach_h=32bit
                     77: esac
                     78: 
                     79: dnl Now a little support for DOS/DJGCC
                     80: AC_SUBST(MAKE_EXE)
                     81: MAKE_EXE=""
                     82: 
                     83: dnl copy commands for systems that don't have links
1.6       pazsan     84: AC_SUBST(LINK_KERNL16L)
                     85: LINK_KERNL16L=""
                     86: AC_SUBST(LINK_KERNL16B)
                     87: LINK_KERNL16B=""
1.1       anton      88: AC_SUBST(LINK_KERNL32L)
                     89: LINK_KERNL32L=""
                     90: AC_SUBST(LINK_KERNL32B)
                     91: LINK_KERNL32B=""
1.6       pazsan     92: AC_SUBST(LINK_KERNL64L)
                     93: LINK_KERNL64L=""
                     94: AC_SUBST(LINK_KERNL64B)
                     95: LINK_KERNL64B=""
1.1       anton      96: 
                     97: #if test $host_os=dos
                     98: #then
                     99: #  echo Configuring for DOS!!!
                    100: #  MAKE_EXE="coff2exe gforth"
                    101: #  LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi'
                    102: #fi
                    103: 
                    104: dnl the following macro produces a warning with autoconf-2.1
                    105: AC_C_BIGENDIAN
1.4       pazsan    106: AC_SUBST(KERNAL)
1.1       anton     107: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
                    108: if test $ac_cv_c_bigendian = yes; then
                    109:   bytesex=b
1.6       pazsan    110:   KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1       anton     111: else
                    112:   bytesex=l
1.6       pazsan    113:   KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1       anton     114: fi
                    115: 
                    116: dnl Checks for programs.
                    117: AC_PROG_LN_S
                    118: AC_PROG_INSTALL
                    119: 
                    120: dnl Checks for library functions
1.2       anton     121: dnl This check is just for making later checks link with libm.
                    122: dnl using sin here is no good idea since it is built-into gcc and typechecked
                    123: AC_CHECK_LIB(m,asin)
1.1       anton     124: AC_FUNC_MEMCMP
                    125: AC_REPLACE_FUNCS(memmove strtoul)
1.8       anton     126: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
1.1       anton     127: AC_SUBST(getopt_long)
1.5       anton     128: AC_CHECK_FUNCS(rint expm1 log1p pow10)
1.1       anton     129: AC_REPLACE_FUNCS(ecvt)
                    130: dnl No check for select, because our replacement is no good under
                    131: dnl anything but DOS
                    132: 
1.9     ! pazsan    133: gforth_fi=kernl${wordsize}${bytesex}.fi
1.8       anton     134: AC_SUBST(gforth_fi)
                    135: 
                    136: AC_LINK_FILES(${mach_h}.h $gforth_fi,machine.h gforth.fi)
1.1       anton     137: AC_OUTPUT(Makefile)
                    138: 

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