1: dnl Process this file with autoconf to produce a configure script.
2:
3: #Copyright (C) 1995,1996,1997,1998,2000 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., 59 Temple Place, Suite 330, Boston, MA 02111, 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,0.5.9-20020901)
26: #snapshots have numbers major.minor.release-YYYYMMDD
27: #note that lexicographic ordering bust be heeded.
28: #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
29: UPDATED="1 September 2002"
30: AC_SUBST(UPDATED)
31: AM_CONFIG_HEADER(engine/config.h)
32: #AM_CYGWIN32
33:
34: AC_ARG_ENABLE(force-reg,
35: [ --enable-force-reg Use explicit register declarations if they appear in
36: the machine.h file. This can cause a good speedup,
37: but also incorrect code with some gcc versions on
38: some processors (default disabled).],
39: AC_DEFINE(FORCE_REG))
40:
41: AC_ARG_WITH(debug,
42: [ --with-debug specifies option -g to compile with debug info (default)
43: --without-debug omits the -g switch and creates smaller images on
44: machines where "strip" has problems with gcc style
45: debugging informations.],
46: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
47:
48: PEEPHOLE="yes"
49: AC_ARG_WITH(peephole,
50: [ --with-peephole Enable peephole optimization (default)
51: --without-peephole disables peephole optimization. Creates smaller,
52: but slower images.],
53: PEEPHOLE="$withval")
54:
55: #currently we force direct threading this way. Eventually we should
56: #setup in the arch and engine files right
57:
58: CFLAGS=$CFLAGS
59:
60: AC_PROG_CC
61:
62: if test "$GCC" = "yes"
63: then
64: echo "Fine, gcc is available"
65: else
66: cat <<'EOF'
67: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
68: It does not work with other C compilers. Please install the GNU C compiler,
69: and try again (or search for a binary distribution for your platform).
70: EOF
71: exit 1
72: fi
73:
74: AC_SUBST(CC)
75: AC_SUBST(DEBUGFLAG)
76:
77: dnl the following macro produces a warning with autoconf-2.1
78: AC_CHECK_SIZEOF(char *)
79: case "$ac_cv_sizeof_char_p" in
80: 2)
81: wordsize=16
82: ;;
83: 4)
84: wordsize=32
85: ;;
86: 8)
87: wordsize=64
88: ;;
89: esac
90:
91: AC_CHECK_SIZEOF(char)
92: AC_CHECK_SIZEOF(short)
93: AC_CHECK_SIZEOF(int)
94: AC_CHECK_SIZEOF(long)
95: AC_CHECK_SIZEOF(long long)
96:
97: ac_cv_int_type_cell=none
98: case "$ac_cv_sizeof_char_p" in
99: $ac_cv_sizeof_int)
100: ac_cv_int_type_cell=int
101: ;;
102: $ac_cv_sizeof_short)
103: ac_cv_int_type_cell=short
104: ;;
105: $ac_cv_sizeof_char)
106: ac_cv_int_type_cell=char
107: ;;
108: $ac_cv_sizeof_long)
109: ac_cv_int_type_cell=long
110: ;;
111: $ac_cv_sizeof_long_long)
112: ac_cv_int_type_cell="long long"
113: ;;
114: esac
115: if test "$ac_cv_int_type_cell" != int; then
116: echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me."
117: echo "Since you don't have a proper C on this machine, that's one more reason"
118: echo "to use Forth;-)"
119: fi
120: AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell)
121:
122: ac_cv_int_type_double_cell=none
123: case `expr 2 '*' "$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: $ac_cv_sizeof_long_long)
134: ac_cv_int_type_double_cell="long long"
135: ;;
136: esac
137: if test "$ac_cv_int_type_double_cell" = none; then
138: echo "Emulating double-cell arithmetic. This may be slow."
139: echo "If you find this unacceptable, ask the GCC maintainers to provide proper"
140: echo 'long longs for your machine (the GCC manual states that they \"are twice as'
141: echo "long as \`long int\'\")."
142: AC_LIBOBJ(dblsub)
143: AC_DEFINE(BUGGY_LONG_LONG)
144: else
145: AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell)
146: fi
147:
148: AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
149: OLDLDFLAGS=$LDFLAGS
150: LDFLAGS="$LDFLAGS -export-dynamic"
151: dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0
152: dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no)
153: AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no)
154: test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS
155: AC_MSG_RESULT($ac_export_dynamic)
156:
157: #terminology is a bit unusual here: The host is the system on which
158: #gforth will run; the system on which configure will run is the `build'
159: AC_CANONICAL_HOST
160: case "$host_cpu" in
161: hppa*)
162: machine=hppa
163: $srcdir/mkinstalldirs arch/hppa
164: AC_LIBOBJ(../arch/hppa/cache)
165: LDFLAGS="$LDFLAGS -Xlinker -N"
166: LIBS="$LIBS -L/lib/pa1.1/"
167: ;;
168: sparc*)
169: machine=sparc
170: ;;
171: i386)
172: machine=386
173: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
174: ;;
175: i486)
176: machine=386
177: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486"
178: ;;
179: i*86)
180: machine=386
181: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
182: CFLAGS_1="$CFLAGS"
183: CFLAGS="$CFLAGS -march=pentium"
184: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
185: ;;
186: ia64*)
187: machine=ia64
188: ;;
189: m68k)
190: machine=m68k
191: CFLAGS="$CFLAGS -fomit-frame-pointer"
192: if test "$host_os" = "nextstep3"
193: then
194: AC_LIBOBJ(termios)
195: fi
196: ;;
197: mips*)
198: machine=mips
199: #link text and data segment into the same 256M region!
200: AC_MSG_CHECKING([whether the linker accepts -T])
201: OLDLDFLAGS=$LDFLAGS
202: LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"
203: AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)
204: test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS
205: AC_MSG_RESULT($ac_link_mips_t)
206: fixme #dynamically generated code should be in the same 256MB
207: # region as the text segment; no indirect threading necessary
208: test $ac_link_mips_t = yes||(echo cannot link text and data into same 256M region, using indirect threading; AC_DEFINE(INDIRECT_THREADED))
209: AC_MSG_CHECKING([whether the linker accepts -D])
210: OLDLDFLAGS=$LDFLAGS
211: LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"
212: AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)
213: test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS
214: AC_MSG_RESULT($ac_link_mips_d)
215: ;;
216: alpha*)
217: machine=alpha
218: #full IEEE FP support for more uniformity across platforms:
219: CFLAGS="$CFLAGS -mieee"
220: ;;
221: power*|rs6000)
222: machine=power
223: $srcdir/mkinstalldirs arch/power
224: AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))
225: ;;
226: *)
227: echo "Using a generic machine description."
228: echo "I'll assume that C floats and doubles are represented by IEEE single and"
229: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
230: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
231: machine=generic
232: esac
233: AC_SUBST(host)
234: AC_SUBST(ENGINE_FLAGS)
235:
236: # Try if GCC understands -fno-cross-jump
237:
238: CFLAGS_1="$CFLAGS"
239: CFLAGS="$CFLAGS -fno-cross-jump"
240: AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")
241:
242: AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
243: AC_SUBST(asm_fs)
244:
245: AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
246: AC_SUBST(disasm_fs)
247:
248: case "$host_os" in
249: *win32)
250: EXE=".exe"
251: DIRSEP="\\"
252: ;;
253: *)
254: EXE=""
255: DIRSEP="/"
256: ;;
257: esac
258: AC_SUBST(EXE)
259: AC_SUBST(DIRSEP)
260: AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP')
261:
262: dnl Now a little support for DOS/DJGCC
263: AC_SUBST(GFORTH_EXE)
264: GFORTH_EXE=""
265: AC_SUBST(GFORTHFAST_EXE)
266: GFORTHFAST_EXE=""
267: AC_SUBST(GFORTHITC_EXE)
268: GFORTHITC_EXE=""
269: AC_SUBST(GFORTHDITC_EXE)
270: GFORTHDITC_EXE=""
271:
272: PATHSEP=":"
273: AC_SUBST(PATHSEP)
274: AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP')
275:
276: AC_SUBST(FORTHSIZES)
277:
278: if test "$PEEPHOLE" = "yes"
279: then
280: PEEPHOLEFLAG="true"
281: AC_DEFINE(HAS_PEEPHOLE)
282: else
283: PEEPHOLEFLAG="false"
284: fi
285: AC_SUBST(PEEPHOLEFLAG)
286:
287: dnl copy commands for systems that don't have links
288: AC_SUBST(LINK_KERNL)
289: LINK_KERNL=""
290:
291: #if test $host_os=dos
292: #then
293: # echo Configuring for DOS!!!
294: # MAKE_EXE="coff2exe gforth"
295: # LINK_KERNL='$(CP) kernl32l.fi kernel.fi'
296: #fi
297:
298: dnl the following macro produces a warning with autoconf-2.1
299: AC_C_BIGENDIAN
300: AC_SUBST(KERNEL)
301: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
302: if test $ac_cv_c_bigendian = yes; then
303: bytesex=b
304: KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
305: else
306: bytesex=l
307: KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
308: fi
309:
310: dnl Checks for programs.
311: AC_PROG_LN_S
312: dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE
313:
314: dnl Checks for library functions
315: dnl This check is just for making later checks link with libm.
316: dnl using sin here is no good idea since it is built-into gcc and typechecked
317: AC_CHECK_LIB(m,asin)
318: AC_CHECK_LIB(dl,dlopen)
319: if test "$host_os" != "nextstep3"
320: then
321: AC_FUNC_MEMCMP
322: fi
323: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
324: AC_CHECK_FUNCS(dlopen sys_siglist getrusage)
325: AC_DECL_SYS_SIGLIST
326: AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt.$ac_objext getopt1))
327: AC_CHECK_FUNCS(rint expm1 log1p)
328: AC_REPLACE_FUNCS(ecvt)
329: dnl No check for select, because our replacement is no good under
330: dnl anything but DOS
331: AC_CHECK_HEADERS(sys/mman.h fnmatch.h)
332: AC_FUNC_FNMATCH
333: test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
334: AC_CHECK_FUNCS(mmap sysconf getpagesize)
335: AM_PATH_LISPDIR
336:
337: kernel_fi=kernl${wordsize}${bytesex}.fi
338: AC_SUBST(kernel_fi)
339:
340: #this breaks bindists
341: #dnl replace srource directory by absolute value
342: #if test $srcdir = "."; then srcdir=`pwd`
343: #fi
344:
345: AC_SUBST(machine)
346: dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed
347: AC_OUTPUT([
348: Makefile
349: Makedist
350: gforthmi
351: vmgen
352: machpc.fs
353: engine/Makefile
354: doc/version.texi ],
355: echo timestamp > stamp-h
356: chmod +x gforthmi
357: chmod +x vmgen
358: test -d kernel||mkdir kernel)
359:
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