1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998 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:
21: AC_INIT(engine/engine.c)
22:
23: dnl We use some automake macros here,
24: dnl but don't use automake for creating Makefile.in
25: AM_INIT_AUTOMAKE(gforth,0.4.0)
26: AM_CONFIG_HEADER(engine/config.h)
27: AM_CYGWIN32
28:
29: AC_ARG_ENABLE(force-reg,
30: [ --enable-force-reg Use explicit register declarations if they appear in
31: the machine.h file. This can cause a good speedup,
32: but also incorrect code with some gcc versions on
33: some processors (default disabled).],
34:
35: AC_DEFINE(FORCE_REG))
36: dnl this is not quite according to the autoconf manual, it causes a replacement
37: AC_ARG_ENABLE(direct-threaded,
38: [ --enable-direct-threaded Force direct threading. This may not work on
39: some machines and may cause slowdown on others.
40: (default processor-dependent)],
41: AC_DEFINE(DIRECT_THREADED))
42: AC_ARG_ENABLE(indirect-threaded,
43: [ --enable-indirect-threaded Force indirect threading. This can cause a
44: slowdown on some machines.
45: (default processor-dependent)],
46: AC_DEFINE(INDIRECT_THREADED))
47:
48: AC_ARG_WITH(debug,
49: [ --with-debug specifies option -g to compile with debug info (default)
50: --without-debug omits the -g switch and creates smaller images on
51: machines where "strip" has problems with gcc style
52: debugging informations.],
53: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
54:
55: CFLAGS=$CFLAGS
56:
57: AC_PROG_CC
58:
59: if test "$GCC" = "yes"
60: then
61: echo "Fine, gcc is available"
62: else
63: cat <<'EOF'
64: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
65: It does not work with other C compilers. Please install the GNU C compiler,
66: and try again (or search for a binary distribution for your platform).
67: EOF
68: exit 1
69: fi
70:
71: AC_SUBST(CC)
72: AC_SUBST(DEBUGFLAG)
73:
74: dnl the following macro produces a warning with autoconf-2.1
75: AC_CHECK_SIZEOF(char *)
76: case "$ac_cv_sizeof_char_p" in
77: 2)
78: wordsize=16
79: ;;
80: 4)
81: wordsize=32
82: ;;
83: 8)
84: wordsize=64
85: ;;
86: esac
87:
88: AC_CHECK_SIZEOF(char)
89: AC_CHECK_SIZEOF(short)
90: AC_CHECK_SIZEOF(int)
91: AC_CHECK_SIZEOF(long)
92: AC_CHECK_SIZEOF(long long)
93:
94: ac_cv_int_type_cell=none
95: case "$ac_cv_sizeof_char_p" in
96: $ac_cv_sizeof_int)
97: ac_cv_int_type_cell=int
98: ;;
99: $ac_cv_sizeof_short)
100: ac_cv_int_type_cell=short
101: ;;
102: $ac_cv_sizeof_char)
103: ac_cv_int_type_cell=char
104: ;;
105: $ac_cv_sizeof_long)
106: ac_cv_int_type_cell=long
107: ;;
108: $ac_cv_sizeof_long_long)
109: ac_cv_int_type_cell="long long"
110: ;;
111: esac
112: if test "$ac_cv_int_type_cell" != int; then
113: echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
114: echo "Since you don't have a proper C on this machine, that's one more reason"
115: echo "to use Forth;-)"
116: fi
117: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
118:
119: ac_cv_int_type_double_cell=none
120: case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
121: $ac_cv_sizeof_short)
122: ac_cv_int_type_double_cell=short
123: ;;
124: $ac_cv_sizeof_int)
125: ac_cv_int_type_double_cell=int
126: ;;
127: $ac_cv_sizeof_long)
128: ac_cv_int_type_double_cell=long
129: ;;
130: $ac_cv_sizeof_long_long)
131: ac_cv_int_type_double_cell="long long"
132: ;;
133: esac
134: if test "$ac_cv_int_type_double_cell" = none; then
135: echo "Emulating double-cell arithmetic. This may be slow."
136: echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
137: echo 'long longs for your machine (the GCC manual states that they \"are twice as'
138: echo "long as \`long int\'\")."
139: LIBOBJS="$LIBOBJS dblsub.o"
140: AC_DEFINE(BUGGY_LONG_LONG)
141: else
142: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
143: fi
144:
145: #terminology is a bit unusual here: The host is the system on which
146: #gforth will run; the system on which configure will run is the `build'
147: AC_CANONICAL_HOST
148: case "$host_cpu" in
149: hppa*)
150: machine=hppa
151: $srcdir/mkinstalldirs arch/hppa
152: LIBOBJS="$LIBOBJS ../arch/hppa/cache.o"
153: LDFLAGS="-Xlinker -N"
154: LIBS="-L/lib/pa1.1/"
155: if test "${enable_direct_threaded+set}" = ""
156: then
157: AC_DEFINE(DIRECT_THREADED)
158: fi
159: ;;
160: sparc*)
161: machine=sparc
162: ;;
163: i386)
164: machine=386
165: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
166: if test "${enable_direct_threaded+set}" = "" \
167: -a "${enable_indirect_threaded+set}" = ""
168: then
169: echo "Using direct threaded code on 386"
170: AC_DEFINE(DIRECT_THREADED)
171: fi
172: ;;
173: i486)
174: machine=386
175: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
176: if test "${enable_direct_threaded+set}" = "" \
177: -a "${enable_indirect_threaded+set}" = ""
178: then
179: echo "Using direct threaded code on 486"
180: AC_DEFINE(DIRECT_THREADED)
181: fi
182: ;;
183: i586|i686)
184: machine=386
185: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
186: if test "${enable_direct_threaded+set}" = "" \
187: -a "${enable_indirect_threaded+set}" = ""
188: then
189: echo "Using indirect threaded code on Pentium and up"
190: AC_DEFINE(INDIRECT_THREADED)
191: fi
192: ;;
193: m68k)
194: machine=m68k
195: CFLAGS="$CFLAGS -fomit-frame-pointer"
196: if test "$host_os" = "nextstep3"
197: then
198: LIBOBJS="$LIBOBJS termios.o"
199: fi
200: ;;
201: mips*)
202: machine=mips
203: #link text and data segment into the same 256M region!
204: AC_MSG_CHECKING([whether the linker accepts -D])
205: OLDLDFLAGS=$LDFLAGS
206: LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
207: AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
208: test $ac_link_mips_d = yes||LDFLAGS="$OLDLDFLAGS -Xlinker -T -Xlinker 10000000"
209: AC_MSG_RESULT($ac_link_mips_d)
210: ;;
211: alpha*)
212: machine=alpha
213: ;;
214: power*)
215: machine=power
216: $srcdir/mkinstalldirs arch/power
217: AC_CHECK_FUNC(_sync_cache_range,true,LIBOBJS="$LIBOBJS ../arch/power/_sync_cache_range.o")
218: ;;
219: *)
220: echo "No direct threading support for $host_cpu, using indirect threading."
221: echo "Using a generic machine description."
222: echo "I'll assume that C floats and doubles are represented by IEEE single and"
223: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
224: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
225: machine=generic
226: esac
227: AC_SUBST(host)
228: AC_SUBST(ENGINE_FLAGS)
229:
230: case "$host_os" in
231: *win32)
232: EXE=".exe"
233: ;;
234: *)
235: EXE=""
236: ;;
237: esac
238: AC_SUBST(EXE)
239:
240: dnl Now a little support for DOS/DJGCC
241: AC_SUBST(GFORTH_EXE)
242: GFORTH_EXE=""
243: AC_SUBST(GFORTHDITC_EXE)
244: GFORTHDITC_EXE=""
245:
246: PATHSEP=":"
247: AC_SUBST(PATHSEP)
248: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
249:
250: AC_SUBST(FORTHSIZES)
251:
252: dnl copy commands for systems that don't have links
253: AC_SUBST(LINK_KERNL)
254: LINK_KERNL=""
255:
256: #if test $host_os=dos
257: #then
258: # echo Configuring for DOS!!!
259: # MAKE_EXE="coff2exe gforth"
260: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
261: #fi
262:
263: dnl the following macro produces a warning with autoconf-2.1
264: AC_C_BIGENDIAN
265: AC_SUBST(KERNEL)
266: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
267: if test $ac_cv_c_bigendian = yes; then
268: bytesex=b
269: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
270: else
271: bytesex=l
272: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
273: fi
274:
275: dnl Checks for programs.
276: AC_PROG_LN_S
277: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
278:
279: dnl Checks for library functions
280: dnl This check is just for making later checks link with libm.
281: dnl using sin here is no good idea since it is built-into gcc and typechecked
282: AC_CHECK_LIB(m,asin)
283: AC_CHECK_LIB(dl,dlopen)
284: if test "$host_os" != "nextstep3"
285: then
286: AC_FUNC_MEMCMP
287: fi
288: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
289: AC_CHECK_FUNCS(dlopen sys_siglist)
290: AC_DECL_SYS_SIGLIST
291: AC_CHECK_FUNC(getopt_long,true,LIBOBJS="$LIBOBJS getopt.o getopt1.o")
292: AC_CHECK_FUNCS(rint expm1 log1p)
293: AC_REPLACE_FUNCS(ecvt)
294: dnl No check for select, because our replacement is no good under
295: dnl anything but DOS
296: AC_CHECK_HEADERS(sys/mman.h)
297: AC_CHECK_FUNCS(mmap sysconf getpagesize)
298: AM_PATH_LISPDIR
299:
300: kernel_fi=kernl${wordsize}${bytesex}.fi
301: AC_SUBST(kernel_fi)
302:
303: AC_SUBST(machine)
304: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
305: AC_OUTPUT([
306: Makefile
307: Makedist
308: gforthmi
309: engine/Makefile
310: doc/version.texi ],
311: echo timestamp > stamp-h
312: chmod +x gforthmi
313: test -d kernel||mkdir kernel)
314:
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