Annotation of gforth/configure.in, revision 1.23
1.1 anton 1: dnl Process this file with autoconf to produce a configure script.
1.20 anton 2:
3: #Copyright (C) 1995,1996 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., 675 Mass Ave, Cambridge, MA 02139, USA.
20:
1.1 anton 21: AC_INIT(engine.c)
1.18 anton 22: AC_CONFIG_HEADER(config.h)
1.14 anton 23:
1.1 anton 24: AC_ARG_ENABLE(force-reg,
25: [ --enable-force-reg Use explicit register declarations if they appear in
26: the machine.h file. This can cause a good speedup,
27: but also incorrect code with some gcc versions on
28: some processors (default disabled).],
29:
30: AC_DEFINE(FORCE_REG))
31: dnl this is not quite according to the autoconf manual, it causes a replacement
32: AC_ARG_ENABLE(direct-threaded,
33: [ --enable-direct-threaded Force direct threading. This may not work on
34: some machines and may cause slowdown on others.
35: (default processor-dependent)],
36: AC_DEFINE(DIRECT_THREADED))
37: AC_ARG_ENABLE(indirect-threaded,
38: [ --enable-indirect-threaded Force indirect threading. This can cause a
39: slowdown on some machines.
40: (default processor-dependent)],
41: AC_DEFINE(INDIRECT_THREADED))
42:
1.9 pazsan 43: AC_ARG_WITH(debug,
1.10 anton 44: [ --with-debug specifies option -g to compile with debug info (default)
1.9 pazsan 45: --without-debug omits the -g switch and creates smaller images on
46: machines where "strip" has problems with gcc style
47: debugging informations.],
48: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
49:
1.16 anton 50: CFLAGS=$CFLAGS
51:
1.15 pazsan 52: AC_PROG_CC
53:
54: if test "$GCC" = "yes"
55: then
56: echo "Fine, gcc is available"
57: else
58: cat <<'EOF'
1.16 anton 59: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
60: It does not work with other C compilers. Please install the GNU C compiler,
61: and try again (or search for a binary distribution for your platform).
1.15 pazsan 62: EOF
63: exit 1
64: fi
1.9 pazsan 65:
1.15 pazsan 66: AC_SUBST(CC)
1.7 anton 67: AC_SUBST(GCCLDFLAGS)
1.9 pazsan 68: AC_SUBST(DEBUGFLAG)
1.7 anton 69:
1.10 anton 70: dnl the following macro produces a warning with autoconf-2.1
71: AC_CHECK_SIZEOF(char *)
72: case "$ac_cv_sizeof_char_p" in
73: 2)
74: wordsize=16
75: ;;
76: 4)
77: wordsize=32
78: ;;
79: 8)
80: wordsize=64
81: ;;
82: esac
1.9 pazsan 83:
1.23 ! pazsan 84: AC_CHECK_SIZEOF(short)
! 85: AC_CHECK_SIZEOF(int)
! 86: AC_CHECK_SIZEOF(long)
! 87: AC_CHECK_SIZEOF(long long)
! 88:
! 89: ac_cv_int_type_cell=none
! 90: case "$ac_cv_sizeof_char_p" in
! 91: $ac_cv_sizeof_short)
! 92: ac_cv_int_type_cell=short
! 93: ;;
! 94: $ac_cv_sizeof_int)
! 95: ac_cv_int_type_cell=int
! 96: ;;
! 97: $ac_cv_sizeof_long)
! 98: ac_cv_int_type_cell=long
! 99: ;;
! 100: $ac_cv_sizeof_long_long)
! 101: ac_cv_int_type_cell="long long"
! 102: ;;
! 103: esac
1.22 pazsan 104: if test "$ac_cv_int_type_cell" != int; then
1.20 anton 105: echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
106: echo "Since you don't have a proper C on this machine, that's one more reason"
107: echo "to use Forth;-)"
108: fi
1.23 ! pazsan 109: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
! 110:
! 111: ac_cv_int_type_double_cell=none
! 112: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
! 113: $ac_cv_sizeof_short)
! 114: ac_cv_int_type_double_cell=short
! 115: ;;
! 116: $ac_cv_sizeof_int)
! 117: ac_cv_int_type_double_cell=int
! 118: ;;
! 119: $ac_cv_sizeof_long)
! 120: ac_cv_int_type_double_cell=long
! 121: ;;
! 122: $ac_cv_sizeof_long_long)
! 123: ac_cv_int_type_double_cell="long long"
! 124: ;;
! 125: esac
1.21 anton 126: if test "$ac_cv_int_type_double_cell" = none; then
1.20 anton 127: echo "Emulating double-cell arithmetic. This may be slow."
128: echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.23 ! pazsan 129: echo 'long longs for your machine (the GCC manual states that they \"are twice as'
! 130: echo "long as \`long int\'\")."
1.20 anton 131: LIBOBJS="$LIBOBJS dblsub.o"
132: AC_DEFINE(BUGGY_LONG_LONG)
1.23 ! pazsan 133: else
! 134: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
1.20 anton 135: fi
136:
1.1 anton 137: #terminology is a bit unusual here: The host is the system on which
138: #gforth will run; the system on which configure will run is the `build'
139: AC_CANONICAL_HOST
140: case "$host_cpu" in
141: hppa*)
142: mach_h=hppa
1.23 ! pazsan 143: LIBOBJS="cache.o"
1.6 pazsan 144: LDFLAGS="-Xlinker -N"
145: LIBS="-L/lib/pa1.1/"
1.1 anton 146: ;;
147: sparc*)
148: mach_h=sparc
149: ;;
150: i386|i486|i586)
151: mach_h=386
1.16 anton 152: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.1 anton 153: #!! direct/indirect threading switch
154: #!! -m486 flag
155: ;;
156: mips*)
157: mach_h=mips
1.7 anton 158: #link text and data segment into the same 256M region!
159: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
1.1 anton 160: ;;
1.9 pazsan 161: alpha*)
162: mach_h=alpha
163: ;;
1.1 anton 164: *)
165: echo "No direct threading support for $host_cpu, using indirect threading."
1.20 anton 166: echo "Using a generic machine description."
1.1 anton 167: echo "I'll assume that C floats and doubles are represented by IEEE single and"
168: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16 anton 169: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.1 anton 170: mach_h=32bit
171: esac
1.10 anton 172: AC_SUBST(host)
1.15 pazsan 173: AC_SUBST(ENGINE_FLAGS)
1.1 anton 174:
175: dnl Now a little support for DOS/DJGCC
176: AC_SUBST(MAKE_EXE)
177: MAKE_EXE=""
178:
179: dnl copy commands for systems that don't have links
1.6 pazsan 180: AC_SUBST(LINK_KERNL16L)
181: LINK_KERNL16L=""
182: AC_SUBST(LINK_KERNL16B)
183: LINK_KERNL16B=""
1.1 anton 184: AC_SUBST(LINK_KERNL32L)
185: LINK_KERNL32L=""
186: AC_SUBST(LINK_KERNL32B)
187: LINK_KERNL32B=""
1.6 pazsan 188: AC_SUBST(LINK_KERNL64L)
189: LINK_KERNL64L=""
190: AC_SUBST(LINK_KERNL64B)
191: LINK_KERNL64B=""
1.1 anton 192:
193: #if test $host_os=dos
194: #then
195: # echo Configuring for DOS!!!
196: # MAKE_EXE="coff2exe gforth"
1.23 ! pazsan 197: # LINK_KERNL32L='$(CP) kernl32l.fi kernel.fi'
1.1 anton 198: #fi
199:
200: dnl the following macro produces a warning with autoconf-2.1
201: AC_C_BIGENDIAN
1.23 ! pazsan 202: AC_SUBST(KERNEL)
1.1 anton 203: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
204: if test $ac_cv_c_bigendian = yes; then
205: bytesex=b
1.23 ! pazsan 206: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1 anton 207: else
208: bytesex=l
1.23 ! pazsan 209: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1 anton 210: fi
211:
212: dnl Checks for programs.
213: AC_PROG_LN_S
214: AC_PROG_INSTALL
215:
216: dnl Checks for library functions
1.2 anton 217: dnl This check is just for making later checks link with libm.
218: dnl using sin here is no good idea since it is built-into gcc and typechecked
219: AC_CHECK_LIB(m,asin)
1.1 anton 220: AC_FUNC_MEMCMP
1.13 anton 221: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal)
1.17 anton 222: AC_CHECK_FUNCS(sys_siglist)
1.19 anton 223: AC_DECL_SYS_SIGLIST
1.8 anton 224: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
1.1 anton 225: AC_SUBST(getopt_long)
1.11 anton 226: AC_CHECK_FUNCS(rint expm1 log1p)
1.1 anton 227: AC_REPLACE_FUNCS(ecvt)
228: dnl No check for select, because our replacement is no good under
229: dnl anything but DOS
230:
1.23 ! pazsan 231: kernel_fi=kernl${wordsize}${bytesex}.fi
! 232: AC_SUBST(kernel_fi)
1.8 anton 233:
1.23 ! pazsan 234: AC_LINK_FILES(${mach_h}.h $kernel_fi,machine.h kernel.fi)
1.18 anton 235: AC_OUTPUT(Makefile,echo timestamp > stamp-h)
1.1 anton 236:
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