Add a check for <unistd.h> providing a prototype for getopt() which is compatible
[deliverable/binutils-gdb.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 dnl v2.5 needed for --bindir et al
8 AC_PREREQ(2.57)
9 AC_INIT(as.h)
10
11 dnl Autoconf 2.57 will find the aux dir without this. However, unless
12 dnl we specify this explicitly, automake-1.7 will assume that ylwrap is in
13 dnl gas/ instead of gas/../.
14 AC_CONFIG_AUX_DIR(..)
15 AC_CANONICAL_SYSTEM
16 AC_ISC_POSIX
17
18 changequote(,)dnl
19 BFD_VERSION=`sed -n -e 's/^.._INIT_AUTOMAKE.*,[ ]*\([^ ]*\)[ ]*).*/\1/p' < ${srcdir}/../bfd/configure.in`
20 changequote([,])dnl
21 AM_INIT_AUTOMAKE(gas, ${BFD_VERSION})
22
23 AM_PROG_LIBTOOL
24
25 user_bfd_gas=
26 AC_ARG_ENABLE(bfd-assembler,
27 [ --enable-bfd-assembler use BFD back end for writing object files],
28 [case "${enableval}" in
29 yes) need_bfd=yes user_bfd_gas=yes ;;
30 no) user_bfd_gas=no ;;
31 *) AC_MSG_ERROR(bad value ${enableval} given for bfd-assembler option) ;;
32 esac])dnl
33 AC_ARG_ENABLE(targets,
34 [ targets alternative target configurations besides the primary],
35 [case "${enableval}" in
36 yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
37 ;;
38 no) enable_targets= ;;
39 *) enable_targets=$enableval ;;
40 esac])dnl
41 AC_ARG_ENABLE(commonbfdlib,
42 [ --enable-commonbfdlib build shared BFD/opcodes/libiberty library],
43 [case "${enableval}" in
44 yes) commonbfdlib=true ;;
45 no) commonbfdlib=false ;;
46 *) AC_MSG_ERROR([bad value ${enableval} for BFD commonbfdlib option]) ;;
47 esac])dnl
48
49 using_cgen=no
50
51 build_warnings="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
52
53 AC_ARG_ENABLE(werror,
54 [ --enable-werror treat compile warnings as errors],
55 [case "${enableval}" in
56 yes | y) ERROR_ON_WARNING="yes" ;;
57 no | n) ERROR_ON_WARNING="no" ;;
58 *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
59 esac])
60
61 # Enable -Werror by default, suppressing it only for --disable-werror
62 # or --disable-build-warnings.
63 if test "${ERROR_ON_WARNING}" != no
64 then
65 build_warnings="$build_warnings -Werror"
66 fi
67
68 AC_ARG_ENABLE(build-warnings,
69 [ --enable-build-warnings Enable build-time compiler warnings if gcc is used],
70 [case "${enableval}" in
71 yes) ;;
72 no) build_warnings="-w";;
73 ,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
74 build_warnings="${build_warnings} ${t}";;
75 *,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
76 build_warnings="${t} ${build_warnings}";;
77 *) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
78 esac
79 if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
80 echo "Setting warning flags = $build_warnings" 6>&1
81 fi])dnl
82 WARN_CFLAGS=""
83 if test "x${build_warnings}" != x -a "x$GCC" = xyes ; then
84 WARN_CFLAGS="${build_warnings}"
85 fi
86 AC_SUBST(WARN_CFLAGS)
87
88 # Generate a header file
89 AM_CONFIG_HEADER(config.h:config.in)
90
91 # If we are on a DOS filesystem, we must use gdb.ini rather than
92 # .gdbinit.
93 case "${host}" in
94 *-*-msdos* | *-*-go32* | *-*-mingw32* | *-*-windows*)
95 GDBINIT="gdb.ini"
96 AC_CONFIG_FILES(gdb.ini:gdbinit.in)
97 ;;
98 *)
99 GDBINIT=".gdbinit"
100 AC_CONFIG_FILES(.gdbinit:gdbinit.in)
101 ;;
102 esac
103 AC_SUBST(GDBINIT)
104
105 #We need this for the host. BOUT header is in host order.
106 AC_C_BIGENDIAN
107
108 te_file=generic
109
110 # Makefile target for installing gas in $(tooldir)/bin.
111 install_tooldir=install-exec-tooldir
112
113 canon_targets=""
114 all_targets=no
115 if test -n "$enable_targets" ; then
116 for t in `echo $enable_targets | sed 's/,/ /g'`; do
117 if test $t = "all"; then
118 all_targets=yes
119 continue
120 fi
121 result=`$ac_config_sub $t 2>/dev/null`
122 if test -n "$result" ; then
123 canon_targets="$canon_targets $result"
124 # else
125 # # Permit "all", etc. We don't support it yet though.
126 # canon_targets="$canon_targets $t"
127 fi
128 done
129 GAS_UNIQ(canon_targets)
130 fi
131
132 emulations=""
133
134 for this_target in $target $canon_targets ; do
135
136 targ=${this_target}
137 . ${srcdir}/configure.tgt
138
139 case ${target_cpu} in
140 crisv32)
141 AC_DEFINE_UNQUOTED(DEFAULT_CRIS_ARCH, $arch,
142 [Default CRIS architecture.])
143 ;;
144 esac
145
146 if test ${this_target} = $target ; then
147 target_cpu_type=${cpu_type}
148 elif test ${target_cpu_type} != ${cpu_type} ; then
149 continue
150 fi
151
152 generic_target=${cpu_type}-${target_vendor}-${target_os}
153 case ${generic_target} in
154 i386-*-sco3.2v5*)
155 if test ${this_target} = $target; then
156 AC_DEFINE(SCO_ELF, 1, [Define if defaulting to ELF on SCO 5.])
157 fi
158 ;;
159
160 i386-*-msdosdjgpp* \
161 | i386-*-go32* \
162 | i386-go32-rtems*)
163 AC_DEFINE(STRICTCOFF, 1, [Using strict COFF?])
164 ;;
165
166 i860-*-*)
167 AC_MSG_WARN(GAS support for ${generic_target} is preliminary and a work in progress)
168 ;;
169
170 mips-sony-bsd*)
171 ;;
172 mips-*-bsd*)
173 AC_MSG_ERROR(Unknown vendor for mips-bsd configuration.)
174 ;;
175
176 ppc-*-aix5.*)
177 AC_DEFINE(AIX_WEAK_SUPPORT, 1,
178 [Define if using AIX 5.2 value for C_WEAKEXT.])
179 ;;
180 ppc-*-linux-*)
181 case "$endian" in
182 big) ;;
183 *) AC_MSG_ERROR(GNU/Linux must be configured big endian) ;;
184 esac
185 ;;
186 ppc-*-solaris*)
187 if test ${this_target} = $target; then
188 AC_DEFINE(TARGET_SOLARIS_COMMENT, 1,
189 [Define if default target is PowerPC Solaris.])
190 fi
191 if test x${endian} = xbig; then
192 AC_MSG_ERROR(Solaris must be configured little endian)
193 fi
194 ;;
195
196 sh*-*-symbianelf*)
197 AC_DEFINE(TARGET_SYMBIAN, 1, [Define if target is Symbian OS.])
198 ;;
199 esac
200
201 if test ${this_target} = $target ; then
202 endian_def=
203 if test x${endian} = xbig; then
204 endian_def=1
205 elif test x${endian} = xlittle; then
206 endian_def=0
207 fi
208 if test x${endian_def} != x; then
209 AC_DEFINE_UNQUOTED(TARGET_BYTES_BIG_ENDIAN, $endian_def,
210 [Define as 1 if big endian.])
211 fi
212 fi
213
214 # Other random stuff.
215
216 case ${cpu_type} in
217 mips)
218 # Set mips_cpu to the name of the default CPU.
219 case ${target_cpu} in
220 mips | mipsbe | mipseb | mipsle | mipsel | mips64 | mips64el)
221 mips_cpu=from-abi
222 ;;
223 mipsisa32 | mipsisa32el)
224 mips_cpu=mips32
225 ;;
226 mipsisa32r2 | mipsisa32r2el)
227 mips_cpu=mips32r2
228 ;;
229 mipsisa64 | mipsisa64el)
230 mips_cpu=mips64
231 ;;
232 mipsisa64r2 | mipsisa64r2el)
233 mips_cpu=mips64r2
234 ;;
235 mipstx39 | mipstx39el)
236 mips_cpu=r3900
237 ;;
238 mips64vr | mips64vrel)
239 mips_cpu=vr4100
240 ;;
241 mipsisa32r2* | mipsisa64r2*)
242 changequote(,)dnl
243 mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r2//' -e 's/el$//'`
244 changequote([,])dnl
245 ;;
246 mips64* | mipsisa64* | mipsisa32*)
247 changequote(,)dnl
248 mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..//' -e 's/el$//'`
249 changequote([,])dnl
250 ;;
251 *)
252 AC_ERROR($target_cpu isn't a supported MIPS CPU name)
253 ;;
254 esac
255 # See whether it's appropriate to set E_MIPS_ABI_O32 for o32
256 # binaries. It's a GNU extension that some OSes don't understand.
257 # The value only matters on ELF targets.
258 case ${target} in
259 *-*-irix*)
260 use_e_mips_abi_o32=0
261 ;;
262 *)
263 use_e_mips_abi_o32=1
264 ;;
265 esac
266 # Decide whether to generate 32-bit or 64-bit code by default.
267 # Used to resolve -march=from-abi when an embedded ABI is selected.
268 case ${target} in
269 mips64*-*-* | mipsisa64*-*-*)
270 mips_default_64bit=1
271 ;;
272 *)
273 mips_default_64bit=0
274 ;;
275 esac
276 # Decide which ABI to target by default.
277 case ${target} in
278 mips64*-linux* | mips-sgi-irix6*)
279 mips_default_abi=N32_ABI
280 ;;
281 mips*-linux*)
282 mips_default_abi=O32_ABI
283 ;;
284 *)
285 mips_default_abi=NO_ABI
286 ;;
287 esac
288 AC_DEFINE_UNQUOTED(MIPS_CPU_STRING_DEFAULT, "$mips_cpu",
289 [Default CPU for MIPS targets. ])
290 AC_DEFINE_UNQUOTED(USE_E_MIPS_ABI_O32, $use_e_mips_abi_o32,
291 [Allow use of E_MIPS_ABI_O32 on MIPS targets. ])
292 AC_DEFINE_UNQUOTED(MIPS_DEFAULT_64BIT, $mips_default_64bit,
293 [Generate 64-bit code by default on MIPS targets. ])
294 AC_DEFINE_UNQUOTED(MIPS_DEFAULT_ABI, $mips_default_abi,
295 [Choose a default ABI for MIPS targets. ])
296 ;;
297 esac
298
299 # Do we need the opcodes library?
300 case ${cpu_type} in
301 vax | i386 | tic30)
302 ;;
303
304 *)
305 need_opcodes=yes
306
307 case "${enable_shared}" in
308 yes) shared_opcodes=true ;;
309 *opcodes*) shared_opcodes=true ;;
310 *) shared_opcodes=false ;;
311 esac
312 if test "${shared_opcodes}" = "true"; then
313 # A shared libopcodes must be linked against libbfd.
314 need_bfd=yes
315 fi
316 ;;
317 esac
318
319 # Any other special object files needed ?
320 case ${cpu_type} in
321 fr30 | ip2k | iq2000 | m32r | openrisc)
322 using_cgen=yes
323 ;;
324
325 frv)
326 using_cgen=yes
327 ;;
328 m68k)
329 case ${extra_objects} in
330 *m68k-parse.o*) ;;
331 *) extra_objects="$extra_objects m68k-parse.o" ;;
332 esac
333 ;;
334
335 mips)
336 echo ${extra_objects} | grep -s "itbl-parse.o"
337 if test $? -ne 0 ; then
338 extra_objects="$extra_objects itbl-parse.o"
339 fi
340
341 echo ${extra_objects} | grep -s "itbl-lex.o"
342 if test $? -ne 0 ; then
343 extra_objects="$extra_objects itbl-lex.o"
344 fi
345
346 echo ${extra_objects} | grep -s "itbl-ops.o"
347 if test $? -ne 0 ; then
348 extra_objects="$extra_objects itbl-ops.o"
349 fi
350 ;;
351
352 i386 | s390 | sparc)
353 if test $this_target = $target ; then
354 AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
355 fi
356 ;;
357
358 xstormy16)
359 using_cgen=yes
360 ;;
361
362 xtensa)
363 echo ${extra_objects} | grep -s "xtensa-relax.o"
364 if test $? -ne 0 ; then
365 extra_objects="$extra_objects xtensa-relax.o"
366 fi
367 ;;
368
369 *)
370 ;;
371 esac
372
373 if test $using_cgen = yes ; then
374 case "x${extra_objects}" in
375 *cgen.o*) ;;
376 *) extra_objects="$extra_objects cgen.o" ;;
377 esac
378 fi
379
380 # See if we really can support this configuration with the emulation code.
381
382 if test $this_target = $target ; then
383 primary_bfd_gas=$bfd_gas
384 obj_format=$fmt
385 te_file=$em
386
387 if test $bfd_gas = no ; then
388 # Can't support other configurations this way.
389 break
390 fi
391 elif test $bfd_gas = no ; then
392 # Can't support this configuration.
393 break
394 fi
395
396 # From target name and format, produce a list of supported emulations.
397
398 case ${generic_target}-${fmt} in
399 mips-*-irix5*-*) emulation="mipsbelf mipslelf mipself mipsbecoff mipslecoff mipsecoff" ;;
400 mips*-*-linux*-*) case "$endian" in
401 big) emulation="mipsbelf mipslelf mipself" ;;
402 *) emulation="mipslelf mipsbelf mipself" ;;
403 esac ;;
404 mips-*-lnews*-ecoff) ;;
405 mips-*-*-ecoff) case "$endian" in
406 big) emulation="mipsbecoff mipslecoff mipsecoff" ;;
407 *) emulation="mipslecoff mipsbecoff mipsecoff" ;;
408 esac ;;
409 mips-*-*-elf) case "$endian" in
410 big) emulation="mipsbelf mipslelf mipself" ;;
411 *) emulation="mipslelf mipsbelf mipself" ;;
412 esac ;;
413 mips-*-sysv4*MP*-*) emulation="mipsbelf mipslelf mipself mipsbecoff mipslecoff mipsecoff" ;;
414 # i386-pc-pe-coff != i386-pc-coff.
415 i386-*-pe-coff) ;;
416 # Uncommenting the next line will turn on support for i386 AOUT
417 # for the default linux configuration
418 # i386-*-linux*-elf) emulation="i386elf i386aout" ;;
419 #
420 i386-*-aout) emulation="i386aout" ;;
421 i386-*-coff) emulation="i386coff" ;;
422 i386-*-elf) emulation="i386elf" ;;
423
424 # Always all formats. The first stated emulation becomes the default.
425 cris-*-*aout*) emulation="crisaout criself" ;;
426 cris-*-*) emulation="criself crisaout" ;;
427 esac
428
429 emulations="$emulations $emulation"
430
431 done
432
433 # Turn on all targets if possible
434 if test ${all_targets} = "yes"; then
435 case ${target_cpu_type} in
436 i386)
437 case ${obj_format} in
438 aout)
439 emulations="$emulations i386coff i386elf"
440 ;;
441 coff)
442 emulations="$emulations i386aout i386elf"
443 ;;
444 elf)
445 emulations="$emulations i386aout i386coff"
446 ;;
447 esac
448 ;;
449 esac
450 fi
451
452 # Assign floating point type. Most processors with FP support
453 # IEEE FP. On those that don't support FP at all, usually IEEE
454 # is emulated.
455 case ${target_cpu} in
456 vax | tahoe ) atof=${target_cpu} ;;
457 pdp11) atof=vax ;;
458 *) atof=ieee ;;
459 esac
460
461 case "${obj_format}" in
462 "") AC_MSG_ERROR(GAS does not know what format to use for target ${target}) ;;
463 esac
464
465 # Unfortunately the cpu in cpu-opc.h file isn't always $(TARGET_CPU).
466 cgen_cpu_prefix=""
467 if test $using_cgen = yes ; then
468 case ${target_cpu} in
469 *) cgen_cpu_prefix=${target_cpu} ;;
470 esac
471 AC_SUBST(cgen_cpu_prefix)
472 AC_DEFINE(USING_CGEN, 1, [Using cgen code?])
473 fi
474
475 dnl
476 dnl Make sure the desired support files exist.
477 dnl
478
479 if test ! -r ${srcdir}/config/tc-${target_cpu_type}.c; then
480 AC_MSG_ERROR(GAS does not support target CPU ${target_cpu_type})
481 fi
482
483 if test ! -r ${srcdir}/config/obj-${obj_format}.c; then
484 AC_MSG_ERROR(GAS does not have support for object file format ${obj_format})
485 fi
486
487 case ${user_bfd_gas}-${primary_bfd_gas} in
488 yes-yes | no-no)
489 # We didn't override user's choice.
490 ;;
491 no-yes)
492 AC_MSG_WARN(Use of BFD is required for ${target}; overriding config options.)
493 ;;
494 no-preferred)
495 primary_bfd_gas=no
496 ;;
497 *-preferred)
498 primary_bfd_gas=yes
499 ;;
500 yes-*)
501 primary_bfd_gas=yes
502 ;;
503 -*)
504 # User specified nothing.
505 ;;
506 esac
507
508 # Some COFF configurations want these random other flags set.
509 case ${obj_format} in
510 coff)
511 case ${target_cpu_type} in
512 i386) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
513 m68k) AC_DEFINE(M68KCOFF, 1, [Using m68k COFF?]) ;;
514 m88k) AC_DEFINE(M88KCOFF, 1, [Using m88k COFF?]) ;;
515 esac
516 ;;
517 esac
518
519 # Getting this done right is going to be a bitch. Each configuration specified
520 # with --enable-targets=... should be checked for environment, format, cpu, and
521 # bfd_gas setting.
522 #
523 # For each configuration, the necessary object file support code must be linked
524 # in. This might be only one, it might be up to four. The necessary emulation
525 # code needs to be provided, too.
526 #
527 # And then there's "--enable-targets=all"....
528 #
529 # For now, just always do it for MIPS ELF or ECOFF configurations. Sigh.
530
531 formats="${obj_format}"
532 emfiles=""
533 EMULATIONS=""
534 GAS_UNIQ(emulations)
535 for em in . $emulations ; do
536 case $em in
537 .) continue ;;
538 mipsbelf | mipslelf | mipself)
539 fmt=elf file=mipself ;;
540 mipsbecoff | mipslecoff | mipsecoff)
541 fmt=ecoff file=mipsecoff ;;
542 *coff)
543 fmt=coff file=$em ;;
544 *aout)
545 fmt=aout file=$em ;;
546 *elf)
547 fmt=elf file=$em ;;
548 esac
549 formats="$formats $fmt"
550 emfiles="$emfiles e-$file.o"
551 EMULATIONS="$EMULATIONS &$em,"
552 done
553 GAS_UNIQ(formats)
554 GAS_UNIQ(emfiles)
555 if test `set . $formats ; shift ; echo $#` -gt 1 ; then
556 for fmt in $formats ; do
557 case $fmt in
558 aout) AC_DEFINE(OBJ_MAYBE_AOUT, 1, [a.out support?]) ;;
559 bout) AC_DEFINE(OBJ_MAYBE_BOUT, 1, [b.out support?]) ;;
560 coff) AC_DEFINE(OBJ_MAYBE_COFF, 1, [COFF support?]) ;;
561 ecoff) AC_DEFINE(OBJ_MAYBE_ECOFF, 1, [ECOFF support?]) ;;
562 elf) AC_DEFINE(OBJ_MAYBE_ELF, 1, [ELF support?]) ;;
563 generic) AC_DEFINE(OBJ_MAYBE_GENERIC, 1, [generic support?]) ;;
564 hp300) AC_DEFINE(OBJ_MAYBE_HP300, 1, [HP300 support?]) ;;
565 ieee) AC_DEFINE(OBJ_MAYBE_IEEE, 1, [IEEE support?]) ;;
566 som) AC_DEFINE(OBJ_MAYBE_SOM, 1, [SOM support?]) ;;
567 esac
568 extra_objects="$extra_objects obj-$fmt.o"
569 done
570 obj_format=multi
571 fi
572 if test `set . $emfiles ; shift ; echo $#` -gt 0 ; then
573 DEFAULT_EMULATION=`set . $emulations ; echo $2`
574 # e-mips* has more than one emulation per file, e-i386* has just one at the
575 # moment. If only one emulation is specified, then don't define
576 # USE_EMULATIONS or include any of the e-files as they will only be bloat.
577 case "${obj_format}${emfiles}" in
578 multi* | *mips*)
579 extra_objects="$extra_objects $emfiles"
580 AC_DEFINE(USE_EMULATIONS, 1, [Use emulation support?]) ;;
581 esac
582 fi
583 AC_SUBST(extra_objects)
584 AC_DEFINE_UNQUOTED(EMULATIONS, $EMULATIONS, [Supported emulations.])
585 AC_DEFINE_UNQUOTED(DEFAULT_EMULATION, "$DEFAULT_EMULATION",
586 [Default emulation.])
587
588 case ${primary_bfd_gas}-${target_cpu_type}-${obj_format} in
589 yes-*-coff) need_bfd=yes ;;
590 no-*-coff) need_bfd=yes
591 AC_DEFINE(MANY_SEGMENTS, 1, [old COFF support?]) ;;
592 esac
593
594 reject_dev_configs=yes
595
596 case ${reject_dev_configs}-${dev} in
597 yes-yes) # Oops.
598 AC_MSG_ERROR(GAS does not support the ${generic_target} configuration.)
599 ;;
600 esac
601
602 AC_SUBST(target_cpu_type)
603 AC_SUBST(obj_format)
604 AC_SUBST(te_file)
605 AC_SUBST(install_tooldir)
606 AC_SUBST(atof)
607 dnl AC_SUBST(emulation)
608
609 case "${primary_bfd_gas}" in
610 yes) AC_DEFINE(BFD_ASSEMBLER, 1, [Use BFD interface?])
611 need_bfd=yes ;;
612 esac
613
614 # do we need the opcodes library?
615 case "${need_opcodes}" in
616 yes)
617 OPCODES_LIB=../opcodes/libopcodes.la
618 ;;
619 esac
620
621 case "${need_bfd}" in
622 yes)
623 BFDLIB=../bfd/libbfd.la
624 BFDVER_H=../bfd/bfdver.h
625 ALL_OBJ_DEPS="$ALL_OBJ_DEPS"' ../bfd/bfd.h $(INCDIR)/symcat.h'
626 ;;
627 esac
628
629 AC_SUBST(BFDLIB)
630 AC_SUBST(OPCODES_LIB)
631
632 AC_SUBST(BFDVER_H)
633 AC_SUBST(ALL_OBJ_DEPS)
634
635 AC_DEFINE_UNQUOTED(TARGET_ALIAS, "${target_alias}", [Target alias.])
636 AC_DEFINE_UNQUOTED(TARGET_CANONICAL, "${target}", [Canonical target.])
637 AC_DEFINE_UNQUOTED(TARGET_CPU, "${target_cpu}", [Target CPU.])
638 AC_DEFINE_UNQUOTED(TARGET_VENDOR, "${target_vendor}", [Target vendor.])
639 AC_DEFINE_UNQUOTED(TARGET_OS, "${target_os}", [Target OS.])
640
641 AC_PROG_CC
642
643 AC_PROG_YACC
644 AM_PROG_LEX
645
646 ALL_LINGUAS="fr tr es"
647 CY_GNU_GETTEXT
648
649 AM_MAINTAINER_MODE
650 AC_EXEEXT
651
652 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h stdarg.h varargs.h errno.h sys/types.h)
653
654 # Put this here so that autoconf's "cross-compiling" message doesn't confuse
655 # people who are not cross-compiling but are compiling cross-assemblers.
656 AC_MSG_CHECKING(whether compiling a cross-assembler)
657 if test "${host}" = "${target}"; then
658 cross_gas=no
659 else
660 cross_gas=yes
661 AC_DEFINE(CROSS_COMPILE, 1, [Compiling cross-assembler?])
662 fi
663 AC_MSG_RESULT($cross_gas)
664
665 dnl ansidecl.h will deal with const
666 dnl AC_CONST
667 AC_FUNC_ALLOCA
668 AC_C_INLINE
669
670 # VMS doesn't have unlink.
671 AC_CHECK_FUNCS(unlink remove, break)
672
673 # Some systems don't have sbrk().
674 AC_CHECK_FUNCS(sbrk)
675
676 # do we need the math library?
677 case "${need_libm}" in
678 yes)
679 AC_CHECK_LIBM
680 AC_SUBST(LIBM)
681 ;;
682 esac
683
684 # Some non-ANSI preprocessors botch requoting inside strings. That's bad
685 # enough, but on some of those systems, the assert macro relies on requoting
686 # working properly!
687 GAS_WORKING_ASSERT
688
689 # On some systems, the system header files may not declare malloc, realloc,
690 # and free. There are places where gas needs these functions to have been
691 # declared -- such as when taking their addresses.
692 gas_test_headers="
693 #ifdef HAVE_MEMORY_H
694 #include <memory.h>
695 #endif
696 #ifdef HAVE_STRING_H
697 #include <string.h>
698 #else
699 #ifdef HAVE_STRINGS_H
700 #include <strings.h>
701 #endif
702 #endif
703 #ifdef HAVE_STDLIB_H
704 #include <stdlib.h>
705 #endif
706 #ifdef HAVE_UNISTD_H
707 #include <unistd.h>
708 #endif
709 "
710
711 # Does errno.h declare errno, or do we have to add a separate declaration
712 # for it?
713 GAS_CHECK_DECL_NEEDED(errno, f, int f, [
714 #ifdef HAVE_ERRNO_H
715 #include <errno.h>
716 #endif
717 ])
718
719 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
720 AC_CACHE_VAL(gas_cv_decl_getopt_unistd_h,
721 [AC_TRY_COMPILE([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);],
722 gas_cv_decl_getopt_unistd_h=yes, gas_cv_decl_getopt_unistd_h=no)])
723 AC_MSG_RESULT($gas_cv_decl_getopt_unistd_h)
724 if test $gas_cv_decl_getopt_unistd_h = yes; then
725 AC_DEFINE([HAVE_DECL_GETOPT], 1,
726 [Is the prototype for getopt in <unistd.h> in the expected format?])
727 fi
728
729 GAS_CHECK_DECL_NEEDED(environ, f, char **f, $gas_test_headers)
730 GAS_CHECK_DECL_NEEDED(ffs, f, int (*f)(int), $gas_test_headers)
731 GAS_CHECK_DECL_NEEDED(free, f, void (*f)(), $gas_test_headers)
732 GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
733 GAS_CHECK_DECL_NEEDED(sbrk, f, char *(*f)(), $gas_test_headers)
734 GAS_CHECK_DECL_NEEDED(strstr, f, char *(*f)(), $gas_test_headers)
735
736 dnl This must come last.
737
738 dnl We used to make symlinks to files in the source directory, but now
739 dnl we just use the right name for .c files, and create .h files in
740 dnl the build directory which include the right .h file. Make sure
741 dnl the old symlinks don't exist, so that a reconfigure in an existing
742 dnl directory behaves reasonably.
743
744 AC_CONFIG_FILES(Makefile doc/Makefile po/Makefile.in:po/Make-in)
745 AC_CONFIG_COMMANDS([default],
746 [rm -f targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c itbl-cpu.h
747 echo '#include "tc-'"${target_cpu_type}"'.h"' > targ-cpu.h
748 echo '#include "obj-'"${obj_format}"'.h"' > obj-format.h
749 echo '#include "te-'"${te_file}"'.h"' > targ-env.h
750 echo '#include "itbl-'"${target_cpu_type}"'.h"' > itbl-cpu.h
751 if test "x$cgen_cpu_prefix" != x ; then
752 echo '#include "opcodes/'"${cgen_cpu_prefix}"'-desc.h"' > cgen-desc.h
753 fi
754
755 sed -e '/POTFILES =/r po/POTFILES' po/Makefile.in > po/Makefile],
756 [target_cpu_type=${target_cpu_type}
757 cgen_cpu_prefix=${cgen_cpu_prefix}
758 obj_format=${obj_format}
759 te_file=${te_file}])
760
761 AC_OUTPUT
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