Annotation of gforth/configure.in, revision 1.21
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:
1.20 anton 84: AC_CHECK_INT_TYPE(sizeof(char *),cell,long)
85: if test $ac_cv_int_type_cell != int; then
86: echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
87: echo "Since you don't have a proper C on this machine, that's one more reason"
88: echo "to use Forth;-)"
89: fi
90: AC_CHECK_INT_TYPE(2*sizeof(char *),double cell,long long)
1.21 ! anton 91: if test "$ac_cv_int_type_double_cell" = none; then
1.20 anton 92: echo "Emulating double-cell arithmetic. This may be slow."
93: echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
1.21 ! anton 94: echo 'long longs for your machine (the GCC manual states that they "are twice as'
! 95: echo "long as \`long int'\")."
1.20 anton 96: LIBOBJS="$LIBOBJS dblsub.o"
97: AC_DEFINE(BUGGY_LONG_LONG)
98: fi
99:
1.1 anton 100: #terminology is a bit unusual here: The host is the system on which
101: #gforth will run; the system on which configure will run is the `build'
102: AC_CANONICAL_HOST
103: case "$host_cpu" in
104: hppa*)
105: mach_h=hppa
1.21 ! anton 106: LIBOBJS="$LIBOBJS cache.o"
1.6 pazsan 107: LDFLAGS="-Xlinker -N"
108: LIBS="-L/lib/pa1.1/"
1.1 anton 109: ;;
110: sparc*)
111: mach_h=sparc
112: ;;
113: i386|i486|i586)
114: mach_h=386
1.16 anton 115: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
1.1 anton 116: #!! direct/indirect threading switch
117: #!! -m486 flag
118: ;;
119: mips*)
120: mach_h=mips
1.7 anton 121: #link text and data segment into the same 256M region!
122: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
1.1 anton 123: ;;
1.9 pazsan 124: alpha*)
125: mach_h=alpha
126: ;;
1.1 anton 127: *)
128: echo "No direct threading support for $host_cpu, using indirect threading."
1.20 anton 129: echo "Using a generic machine description."
1.1 anton 130: echo "I'll assume that C floats and doubles are represented by IEEE single and"
131: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
1.16 anton 132: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
1.1 anton 133: mach_h=32bit
134: esac
1.10 anton 135: AC_SUBST(host)
1.15 pazsan 136: AC_SUBST(ENGINE_FLAGS)
1.1 anton 137:
138: dnl Now a little support for DOS/DJGCC
139: AC_SUBST(MAKE_EXE)
140: MAKE_EXE=""
141:
142: dnl copy commands for systems that don't have links
1.6 pazsan 143: AC_SUBST(LINK_KERNL16L)
144: LINK_KERNL16L=""
145: AC_SUBST(LINK_KERNL16B)
146: LINK_KERNL16B=""
1.1 anton 147: AC_SUBST(LINK_KERNL32L)
148: LINK_KERNL32L=""
149: AC_SUBST(LINK_KERNL32B)
150: LINK_KERNL32B=""
1.6 pazsan 151: AC_SUBST(LINK_KERNL64L)
152: LINK_KERNL64L=""
153: AC_SUBST(LINK_KERNL64B)
154: LINK_KERNL64B=""
1.1 anton 155:
156: #if test $host_os=dos
157: #then
158: # echo Configuring for DOS!!!
159: # MAKE_EXE="coff2exe gforth"
1.13 anton 160: # LINK_KERNL32L='$(CP) kernl32l.fi kernal.fi'
1.1 anton 161: #fi
162:
163: dnl the following macro produces a warning with autoconf-2.1
164: AC_C_BIGENDIAN
1.4 pazsan 165: AC_SUBST(KERNAL)
1.1 anton 166: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
167: if test $ac_cv_c_bigendian = yes; then
168: bytesex=b
1.6 pazsan 169: KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1 anton 170: else
171: bytesex=l
1.6 pazsan 172: KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1 anton 173: fi
174:
175: dnl Checks for programs.
176: AC_PROG_LN_S
177: AC_PROG_INSTALL
178:
179: dnl Checks for library functions
1.2 anton 180: dnl This check is just for making later checks link with libm.
181: dnl using sin here is no good idea since it is built-into gcc and typechecked
182: AC_CHECK_LIB(m,asin)
1.1 anton 183: AC_FUNC_MEMCMP
1.13 anton 184: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal)
1.17 anton 185: AC_CHECK_FUNCS(sys_siglist)
1.19 anton 186: AC_DECL_SYS_SIGLIST
1.8 anton 187: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
1.1 anton 188: AC_SUBST(getopt_long)
1.11 anton 189: AC_CHECK_FUNCS(rint expm1 log1p)
1.1 anton 190: AC_REPLACE_FUNCS(ecvt)
191: dnl No check for select, because our replacement is no good under
192: dnl anything but DOS
193:
1.13 anton 194: kernal_fi=kernl${wordsize}${bytesex}.fi
195: AC_SUBST(kernal_fi)
1.8 anton 196:
1.13 anton 197: AC_LINK_FILES(${mach_h}.h $kernal_fi,machine.h kernal.fi)
1.18 anton 198: AC_OUTPUT(Makefile,echo timestamp > stamp-h)
1.1 anton 199:
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