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[binutils.git] / gas / configure.in
1 dnl Process this file with autoconf to produce a configure script.
2 dnl
3 dnl And be careful when changing it!  If you must add tests with square
4 dnl brackets, be sure changequote invocations surround it.
5 dnl
6 dnl
7 AC_PREREQ(1.118)dnl
8 AC_INIT(as.h)dnl
9 dnl
10 bfd_gas=no
11 user_bfd_gas=
12 AC_ARG_ENABLE(bfd-assembler,
13 [    bfd-assembler      use BFD back end for writing object files],
14 [case "${enableval}" in
15   yes) need_bfd=yes user_bfd_gas=yes ;;
16   no)  user_bfd_gas=no ;;
17   *)   AC_MSG_ERROR(bad value ${enableval} given for bfd-assembler option) ;;
18 esac])dnl
19
20 # Generate a header file -- gets more post-processing by Makefile later.
21 AC_CONFIG_HEADER(conf)
22
23 dnl For recursion to work right, this must be an absolute pathname.
24 AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
25 AC_CANONICAL_SYSTEM
26 AC_ARG_PROGRAM
27
28 emulation=generic
29
30 # assign cpu type
31
32 # check for architecture variants
33 case ${target_cpu} in
34   hppa*)        cpu_type=hppa ;;
35 changequote(,)dnl
36   i[45]86)      cpu_type=i386 ;;
37   m680[012346]0) cpu_type=m68k ;;
38   m68008)       cpu_type=m68k ;;
39   m683??)       cpu_type=m68k ;;
40 changequote([,])dnl
41   m8*)          cpu_type=m88k ;;
42   mips*el)      cpu_type=mips endian=little;;
43   mips*)        cpu_type=mips endian=big ;;
44   powerpc*)     cpu_type=ppc ;;
45   rs6000*)      cpu_type=ppc ;;
46   sparc64)      cpu_type=sparc obj_format=elf AC_DEFINE(sparcv9) ;;
47   sparclite*)   cpu_type=sparc ;;
48   *)            cpu_type=${target_cpu} ;;
49 esac
50
51 # do we need the opcodes library?
52 case ${cpu_type} in
53   alpha | vax)
54     ;;
55   *)
56     OPCODES_LIB="../opcodes/libopcodes.a"
57     ;;
58 esac
59 AC_SUBST(OPCODES_LIB)
60
61 gas_target=${cpu_type}
62 generic_target=${cpu_type}-${target_vendor}-${target_os}
63 dev=no
64
65 # assign object format
66 case ${generic_target} in
67   a29k-amd-udi)         obj_format=coff gas_target=ebmon29k ;;
68   a29k-amd-ebmon)       obj_format=coff gas_target=ebmon29k ;;
69
70   alpha-*-netware*)     obj_format=ecoff ;;
71   alpha-*-osf*)         obj_format=ecoff ;;
72
73   arm-*-riscix*)        obj_format=aout bfd_gas=yes ;;
74
75   hppa-*-*elf*)         obj_format=elf emulation=hppa ;;
76   hppa-*-osf*)          obj_format=som emulation=hppa ;;
77   hppa-*-hpux*)         obj_format=som emulation=hppa ;;
78   hppa-*-bsd*)          obj_format=som emulation=hppa ;;
79   hppa-*-hiux*)         obj_format=som emulation=hppa ;;
80
81   h8300-*-coff)         obj_format=coff ;;
82
83   i386-ibm-aix*)        obj_format=coff gas_target=i386coff
84                          emulation=i386aix ;;
85   i386-*-bsd*)          obj_format=aout emulation=386bsd ;;
86   i386-*-netbsd0.8)     obj_format=aout emulation=386bsd ;;
87   i386-*-netbsd*)       obj_format=aout emulation=netbsd ;;
88   i386-*-linux*elf*)    obj_format=elf  emulation=linux ;;
89   i386-*-linux*coff*)   obj_format=coff emulation=linux
90                          gas_target=i386coff ;;
91   i386-*-linux*)        obj_format=aout emulation=linux ;;
92   i386-*-lynxos*)       obj_format=coff gas_target=i386coff
93                          emulation=lynx ;;
94   i386-*-sysv4* | i386-*-solaris* | i386-*-elf)
95                         obj_format=elf ;;
96   i386-*-coff | i386-*-sysv* | i386-*-sco* | i386-*-isc*)
97                         obj_format=coff gas_target=i386coff ;;
98   i386-*-vsta)          obj_format=aout ;;
99   i386-*-go32)          obj_format=coff gas_target=i386coff ;;
100   i386-*-mach* | i386-*-gnu*)
101                         obj_format=aout emulation=mach bfd_gas=yes ;;
102
103   i960-*-bout)          obj_format=bout ;;
104   i960-*-coff)          obj_format=coff emulation=ic960 gas_target=ic960coff ;;
105   i960-*-nindy*)        obj_format=bout ;;
106   i960-*-vxworks4*)     obj_format=bout ;;
107   i960-*-vxworks5.0)    obj_format=bout ;;
108   i960-*-vxworks5.*)    obj_format=coff emulation=ic960 gas_target=ic960coff ;;
109   i960-*-vxworks*)      obj_format=bout ;;
110
111   m68k-wrs-vxworks | m68k-ericsson-ose | m68k-*-sunos*)
112                         obj_format=aout emulation=sun3 ;;
113   m68k-motorola-sysv)   obj_format=coff gas_target=m68kcoff emulation=delta ;;
114   m68k-bull-sysv3*)     obj_format=coff gas_target=m68kcoff emulation=dpx2 ;;
115   m68k-apollo-*)        obj_format=coff gas_target=apollo emulation=apollo ;;
116   m68k-*-coff | m68k-*-sysv*)
117                         obj_format=coff gas_target=m68kcoff ;;
118   m68k-*-hpux)          obj_format=hp300 emulation=hp300 ;;
119   m68k-*-lynxos*)       obj_format=coff gas_target=m68kcoff
120                          emulation=lynx ;;
121
122   m88k-*-coff*)         obj_format=coff gas_target=m88kcoff ;;
123
124   # don't change emulation like *-*-bsd does
125   mips-*-bsd*)          bfd_gas=yes obj_format=aout gas_target=mips-lit ;;
126   mips-*-ultrix*)       obj_format=ecoff gas_target=mips-lit ;;
127   mips-*-ecoff*)        obj_format=ecoff 
128                         case "$endian" in
129                         big) gas_target=mips-big ;;
130                         *)   gas_target=mips-lit ;;
131                         esac
132                         ;;
133   mips-*-ecoff*)        obj_format=ecoff gas_target=mips-big ;;
134   mips-*-irix5*)        obj_format=elf gas_target=mips-big ;;
135   mips-*-irix*)         obj_format=ecoff gas_target=mips-big ;;
136   mips-*-riscos*)       obj_format=ecoff gas_target=mips-big ;;
137   mips-*-sysv*)         obj_format=ecoff gas_target=mips-big ;;
138   mips-*-elf*)          obj_format=elf 
139                         case "$endian" in
140                         big) gas_target=mips-big ;;
141                         *)   gas_target=mips-lit ;;
142                         esac
143                         ;;
144   ppc-*-aix*)           obj_format=coff bfd_gas=yes ;;
145   ppc-*-elf*)           obj_format=elf bfd_gas=yes ;;
146   ppc-*-netware*)       obj_format=elf emulation=ppcnw ;;
147   ppc-*-sysv4*)         obj_format=elf bfd_gas=yes ;;
148
149   sh-*-coff)            obj_format=coff ;;
150
151   ns32k-pc532-mach*)    obj_format=aout emulation=pc532 bfd_gas=yes ;;
152   ns32k-pc532-netbsd*)  obj_format=aout emulation=netbsd532 bfd_gas=yes ;;
153
154   sparc*-*-sunos4*)     obj_format=aout emulation=sun3 bfd_gas=yes ;;
155   sparc*-*-aout | sparc*-*-vxworks)
156                         obj_format=aout bfd_gas=yes ;;
157   sparc*-*-coff)        obj_format=coff bfd_gas=yes ;;
158   sparc*-*-lynxos*)     obj_format=coff bfd_gas=yes emulation=lynx ;;
159   sparc*-fujitsu-none)  obj_format=aout bfd_gas=yes ;;
160   sparc*-*-elf | sparc*-*-solaris*)
161                         obj_format=elf ;;
162
163   vax-*-bsd* | vax-*-ultrix*)
164                         obj_format=aout ;;
165   vax-*-vms)            obj_format=vms ;;
166
167   z8k-*-coff | z8k-*-sim)
168                         obj_format=coff ;;
169
170   *-*-aout | *-*-scout)
171                         obj_format=aout ;;
172   *-*-nindy*)
173                         obj_format=bout ;;
174   *-*-bsd*)
175                         obj_format=aout emulation=sun3 ;;
176   *-*-generic)          obj_format=generic ;;
177   *-*-xray | *-*-hms)   obj_format=coff ;;
178   *-*-sim)              obj_format=coff ;;
179   *-*-elf | *-*-sysv4* | *-*-solaris*)
180                         AC_MSG_WARN(GAS support for ELF format is incomplete)
181                         obj_format=elf dev=yes ;;
182   *-*-vxworks)          obj_format=aout ;;
183   *-*-netware)          obj_format=elf ;;
184 esac
185
186 # Assign floating point type.  Most processors with FP support
187 # IEEE FP.  On those that don't support FP at all, usually IEEE
188 # is emulated.
189 case ${target_cpu} in
190   vax | tahoe ) atof=${target_cpu} ;;
191   *)                    atof=ieee ;;
192 esac
193
194 case "${obj_format}" in
195   "") AC_MSG_ERROR(GAS does not know what format to use for target ${target}) ;;
196 esac
197
198 dnl
199 dnl Make sure the desired support files exist.
200 dnl
201
202 if test ! -r ${srcdir}/config/tc-${cpu_type}.c; then
203   AC_MSG_ERROR(GAS does not support target CPU ${cpu_type})
204 fi
205
206 if test ! -r ${srcdir}/config/obj-${obj_format}.c; then
207   AC_MSG_ERROR(GAS does not have support for object file format ${obj_format})
208 fi
209
210 # and target makefile frag
211
212 target_frag=${srcdir}/config/${gas_target}.mt
213 AC_SUBST_FILE(target_frag)
214
215 case ${cpu_type}-${obj_format} in
216 # not yet
217 # i386-aout)    bfd_gas=preferred ;;
218   *-elf)        bfd_gas=yes ;;
219   *-ecoff)      bfd_gas=yes ;;
220   *-som)        bfd_gas=yes ;;
221   *)            ;;
222 esac
223
224 case ${user_bfd_gas}-${bfd_gas} in
225   yes-yes | no-no)
226     # We didn't override user's choice.
227     ;;
228   no-yes)
229     AC_MSG_WARN(Use of BFD is required for ${target}; overriding config options.)
230     ;;
231   no-preferred)
232     bfd_gas=no
233     ;;
234   *-preferred)
235     bfd_gas=yes
236     ;;
237   -*)
238     # User specified nothing.
239     ;;
240 esac
241
242 case ${bfd_gas}-${cpu_type}-${obj_format} in
243   yes-*-coff)   need_bfd=yes ;;
244   no-*-coff)    need_bfd=yes
245                 AC_DEFINE(MANY_SEGMENTS) ;;
246 esac
247
248 reject_dev_configs=yes
249
250 case ${reject_dev_configs}-${dev} in
251   yes-yes) # Oops.
252     AC_MSG_ERROR(GAS does not support the ${generic_target} configuration.)
253     ;;
254 esac
255
256 AC_LINK_FILES(config/tc-${cpu_type}.c   config/tc-${cpu_type}.h \
257         config/obj-${obj_format}.h config/obj-${obj_format}.c \
258         config/te-${emulation}.h config/atof-${atof}.c,
259         targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c)
260
261 case "${bfd_gas}" in
262   yes)  AC_DEFINE(BFD_ASSEMBLER)
263         need_bfd=yes ;;
264 esac
265
266 case "${need_bfd}" in
267   yes)  BFDLIB=../bfd/libbfd.a
268         ALL_OBJ_DEPS="$ALL_OBJ_DEPS ../bfd/bfd.h"
269         ;;
270 esac
271 AC_SUBST(BFDLIB)
272 AC_SUBST(ALL_OBJ_DEPS)
273
274 AC_DEFINE_UNQUOTED(TARGET_ALIAS,        "${target_alias}")
275 AC_DEFINE_UNQUOTED(TARGET_CANONICAL,    "${target}")
276 AC_DEFINE_UNQUOTED(TARGET_CPU,          "${target_cpu}")
277 AC_DEFINE_UNQUOTED(TARGET_VENDOR,       "${target_vendor}")
278 AC_DEFINE_UNQUOTED(TARGET_OS,           "${target_os}")
279
280 case ${host} in
281   rs6000-*-*)
282         # The IBM compiler mis-compiles some expressions used in gas.
283         # This will tell gas to work around this lossage.
284         AC_DEFINE(IBM_COMPILER_SUX) ;;
285   i386-*-go32)
286         # Using fopen(..., "w") for a binary file breaks under DOS.
287         AC_DEFINE(WANT_FOPEN_BIN)   ;;
288 esac
289
290 AC_PROG_CC
291 AC_PROG_INSTALL
292
293 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h stdarg.h varargs.h errno.h sys/types.h)
294
295 # Put this here so that autoconf's "cross-compiling" message doesn't confuse
296 # people who are not cross-compiling but are compiling cross-assemblers.
297 AC_MSG_CHECKING(whether compiling a cross-assembler)
298 if test "${host}" = "${target}"; then
299   cross_gas=yes
300   AC_DEFINE(CROSS_COMPILE)
301 else
302   cross_gas=no
303 fi
304 AC_MSG_RESULT($cross_gas)
305
306 dnl ansidecl.h will deal with const
307 dnl AC_CONST
308 AC_FUNC_ALLOCA
309 AC_C_INLINE
310
311 # VMS needs this.
312 AC_CHECK_FUNCS(unlink delete, break)
313
314 # Some non-ANSI preprocessors botch requoting inside strings.  That's bad
315 # enough, but on some of those systems, the assert macro relies on requoting
316 # working properly!
317 GAS_WORKING_ASSERT
318
319 # On some systems, the system header files may not declare malloc, realloc,
320 # and free.  There are places where gas needs these functions to have been
321 # declared -- such as when taking their addresses.
322 gas_test_headers="
323 #ifdef HAVE_MEMORY_H
324 #include <memory.h>
325 #endif
326 #ifdef HAVE_STRING_H
327 #include <string.h>
328 #endif
329 #ifdef HAVE_STDLIB_H
330 #include <stdlib.h>
331 #endif
332 #ifdef HAVE_UNISTD_H
333 #include <unistd.h>
334 #endif
335 "
336 GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
337 GAS_CHECK_DECL_NEEDED(free, f, int f, $gas_test_headers)
338
339 # Does errno.h declare errno, or do we have to add a separate declaration
340 # for it?
341 GAS_CHECK_DECL_NEEDED(errno, f, int f, [
342 #ifdef HAVE_ERRNO_H
343 #include <errno.h>
344 #endif
345 ])
346
347 AC_CONFIG_SUBDIRS(testsuite)
348
349 dnl This must come last.
350 dnl Apparently symlinks are checked for in the directory containing
351 dnl  the last Makefile.  Thus the order used here...
352 AC_OUTPUT(Makefile doc/Makefile .gdbinit:gdbinit.in)
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