aboutsummaryrefslogtreecommitdiff
path: root/newlib/configure.ac
blob: 55e5a944689f7fd16d1fabceab085fc42795c042 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
dnl This is the newlib configure.in file.
dnl Process this file with autoconf to produce a configure script.

AC_INIT([newlib],[NEWLIB_VERSION])
AC_CONFIG_SRCDIR([libc])

dnl Since we can't control what defines autoheader picks up (various autoconf
dnl macros will add their own), filter out all the ones w/out a _ prefix.  All
dnl the ones we want to export use a _ prefix, and all the rest we don't want
dnl to export as it'll pollute the namespace of newlib users.
dnl We also filter out version defines that we want in _newlib_version.h.
dnl NB: newlib.h must be the first AC_CONFIG_HEADERS call for autoheader.
AC_CONFIG_HEADERS(
  [newlib.h:newlib.hin],
  [sed -i.tmp -E -e '/^#define [^_]/d' -e '/^\/\* #undef [^_]/d' -e '/_NEWLIB_VERSION|__NEWLIB_(MINOR|PATCHLEVEL)__|__NEWLIB__/d' newlib.h && rm -f newlib.h.tmp])
AH_TOP([/* NB: The contents are filtered before being installed. */

#ifndef __NEWLIB_H__
#define __NEWLIB_H__ 1

/* Newlib version */
#include <_newlib_version.h>])
AH_BOTTOM([#endif /* !__NEWLIB_H__ */])

AC_CONFIG_HEADERS([_newlib_version.h:_newlib_version.hin])

dnl Can't be done in NEWLIB_CONFIGURE because that confuses automake. 
AC_CONFIG_AUX_DIR(..)

dnl Support --enable-newlib-io-pos-args
dnl This option is actually read in libc/configure.in.  It is repeated
dnl here so that it shows up in the help text.
AC_ARG_ENABLE(newlib-io-pos-args,
[  --enable-newlib-io-pos-args enable printf-family positional arg support],
[case "${enableval}" in
  yes) newlib_io_pos_args=yes ;;
  no)  newlib_io_pos_args=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-pos-args option) ;;
 esac], [newlib_io_pos_args=])dnl

dnl Support --enable-newlib-io-c99-formats
AC_ARG_ENABLE(newlib-io-c99-formats,
[  --enable-newlib-io-c99-formats   enable C99 support in IO functions like printf/scanf],
[case "${enableval}" in
  yes) newlib_io_c99_formats=yes;;
  no)  newlib_io_c99_formats=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-c99-formats option) ;;
 esac], [newlib_io_c99_formats=])dnl

dnl Support --enable-newlib-register-fini
AC_ARG_ENABLE(newlib-register-fini,
[  --enable-newlib-register-fini   enable finalization function registration using atexit],
[case "${enableval}" in
  yes) newlib_register_fini=yes;;
  no)  newlib_register_fini=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-register-fini option) ;;
 esac], [newlib_register_fini=])dnl

dnl Support --enable-newlib-io-long-long
AC_ARG_ENABLE(newlib-io-long-long,
[  --enable-newlib-io-long-long   enable long long type support in IO functions like printf/scanf],
[case "${enableval}" in
  yes) newlib_io_long_long=yes;;
  no)  newlib_io_long_long=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-long option) ;;
 esac], [newlib_io_long_long=])dnl

dnl Support --enable-newlib-io-long-double
AC_ARG_ENABLE(newlib-io-long-double,
[  --enable-newlib-io-long-double   enable long double type support in IO functions printf/scanf],
[case "${enableval}" in
  yes) newlib_io_long_double=yes;;
  no)  newlib_io_long_double=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-io-long-double option) ;;
 esac], [newlib_io_long_double=])dnl

dnl If multibyte support is enabled, iconv should be enabled too
dnl Support --enable-newlib-mb
AC_ARG_ENABLE(newlib-mb,
[  --enable-newlib-mb        enable multibyte support],
[case "${enableval}" in
  yes) newlib_mb=yes;;
  no)  newlib_mb=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-mb option) ;;
 esac], [newlib_mb=])dnl

dnl Enable verification of successful memory allocation for _REENT_CHECK family of macros
dnl Support --disable-newlib-reent-check-verify
AC_ARG_ENABLE(newlib-reent-check-verify,
[  --disable-newlib-reent-check-verify        disable checking of _REENT_CHECK memory allocation],
[case "${enableval}" in
  yes) newlib_reent_check_verify=yes;;
  no)  newlib_reent_check_verify=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-reent-check-verify option) ;;
 esac], [newlib_reent_check_verify=])dnl

dnl Support --enable-newlib-iconv-encodings
AC_ARG_ENABLE(newlib-iconv-encodings,
[  --enable-newlib-iconv-encodings   enable specific comma-separated list of bidirectional iconv encodings to be built-in],
[if test x${enableval} = x; then
   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-encodings option - use comma-separated encodings list)
 fi
 iconv_encodings=${enableval}
 ], [iconv_encodings=])dnl

dnl Support --enable-newlib-iconv-from-encodings
AC_ARG_ENABLE(newlib-iconv-from-encodings,
[  --enable-newlib-iconv-from-encodings   enable specific comma-separated list of \"from\" iconv encodings to be built-in],
[if test x${enableval} = x; then
   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-from-encodings option - use comma-separated encodings list)
 fi
 iconv_from_encodings=${enableval}
 ], [iconv_from_encodings=])dnl

dnl Support --enable-newlib-iconv-to-encodings
AC_ARG_ENABLE(newlib-iconv-to-encodings,
[  --enable-newlib-iconv-to-encodings   enable specific comma-separated list of \"to\" iconv encodings to be built-in],
[if test x${enableval} = x; then
   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-to-encodings option - use comma-separated encodings list)
 fi
 iconv_to_encodings=${enableval}
 ], [iconv_to_encodings=])dnl

dnl Support --enable-newlib-iconv-external-ccs
AC_ARG_ENABLE(newlib-iconv-external-ccs,
[  --enable-newlib-iconv-external-ccs     enable capabilities to load external CCS files for iconv],
[if test "${newlib_iconv_external_ccs+set}" != set; then
   case "${enableval}" in
     yes) newlib_iconv_external_ccs=yes ;;
     no)  newlib_iconv_external_ccs=no ;;
     *)   AC_MSG_ERROR(bad value ${enableval} for newlib-iconv-external-ccs option) ;;
   esac
 fi], [newlib_iconv_external_ccs=${newlib_iconv_external_ccs}])dnl

dnl Support --disable-newlib-atexit-dynamic-alloc
AC_ARG_ENABLE(newlib-atexit-dynamic-alloc,
[  --disable-newlib-atexit-dynamic-alloc    disable dynamic allocation of atexit entries],
[if test "${newlib_atexit_dynamic_alloc+set}" != set; then
  case "${enableval}" in
    yes) newlib_atexit_dynamic_alloc=yes ;;
    no)  newlib_atexit_dynamic_alloc=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-atexit-dynamic-alloc option) ;;
  esac
 fi], [newlib_atexit_dynamic_alloc=${newlib_atexit_dynamic_alloc}])dnl

dnl Support --enable-newlib-global-atexit
dnl Enable atexit data structure as global variables to save memory usage in
dnl _reent.  This is no longer optional.  It is enabled in all Newlib
dnl configurations.
AC_ARG_ENABLE(newlib-global-atexit,
[  --enable-newlib-global-atexit	enable atexit data structure as global],
[if test "${newlib_global_atexit+set}" != set; then
  case "${enableval}" in
    yes) newlib_global_atexit=yes ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-global-atexit option) ;;
  esac
 fi], [newlib_global_atexit=yes])dnl

dnl Support --enable-newlib-reent-small
AC_ARG_ENABLE(newlib-reent-small,
[  --enable-newlib-reent-small   enable small reentrant struct support],
[case "${enableval}" in
  yes) newlib_reent_small=yes;;
  no)  newlib_reent_small=no ;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-reent-small option) ;;
 esac], [newlib_reent_small=])dnl

dnl Support --enable-newlib-reent-binary-compat
AC_ARG_ENABLE(newlib-reent-binary-compat,
[  --enable-newlib-reent-binary-compat   enable backward binary compatibility for struct _reent],
[if test "${newlib_reent_binary_compat+set}" != set; then
  case "${enableval}" in
    yes) newlib_reent_binary_compat=yes ;;
    no)  newlib_reent_binary_compat=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-enable-reent-binary-compat option) ;;
  esac
 fi], [newlib_reent_binary_compat=no])dnl

dnl Support --enable-newlib-reent-thread-local
AC_ARG_ENABLE(newlib-reent-thread-local,
[  --enable-newlib-reent-thread-local   enable thread-local storage objects as a replacment for struct _reent members],
[if test "${newlib_reent_thread_local+set}" != set; then
  case "${enableval}" in
    yes) newlib_reent_thread_local=yes ;;
    no)  newlib_reent_thread_local=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-enable-reent-thread-local option) ;;
  esac
 fi], [newlib_reent_thread_local=no])dnl

dnl Support --enable-newlib-global-stdio-streams
dnl This is no longer optional.  It is enabled in all Newlib configurations.
AC_ARG_ENABLE(newlib-global-stdio-streams,
[  --enable-newlib-global-stdio-streams   enable global stdio streams],
[case "${enableval}" in
  yes) newlib_global_stdio_streams=yes;;
  *)   AC_MSG_ERROR(bad value ${enableval} for newlib-global-stdio-streams option) ;;
 esac], [newlib_global_stdio_streams=yes])dnl
 
dnl Support --disable-newlib-fvwrite-in-streamio
AC_ARG_ENABLE(newlib-fvwrite-in-streamio,
[  --disable-newlib-fvwrite-in-streamio    disable iov in streamio],
[if test "${newlib_fvwrite_in_streamio+set}" != set; then
  case "${enableval}" in
    yes) newlib_fvwrite_in_streamio=yes ;;
    no)  newlib_fvwrite_in_streamio=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-fvwrite-in-streamio option) ;;
  esac
 fi], [newlib_fvwrite_in_streamio=yes])dnl

dnl Support --disable-newlib-fseek-optimization
AC_ARG_ENABLE(newlib-fseek-optimization,
[  --disable-newlib-fseek-optimization    disable fseek optimization],
[if test "${newlib_fseek_optimization+set}" != set; then
  case "${enableval}" in
    yes) newlib_fseek_optimization=yes ;;
    no)  newlib_fseek_optimization=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-fseek-optimization option) ;;
  esac
 fi], [newlib_fseek_optimization=yes])dnl
 
dnl Support --enable-newlib-wide-orient
dnl This option is also read in libc/configure.in.  It is repeated
dnl here so that it shows up in the help text.
AC_ARG_ENABLE(newlib_wide_orient,
[  --disable-newlib-wide-orient    Turn off wide orientation in streamio],
[case "${enableval}" in
   yes) newlib_wide_orient=yes ;;
   no)  newlib_wide_orient=no ;;
   *) AC_MSG_ERROR(bad value ${enableval} for newlib-wide-orient) ;;
 esac],[newlib_wide_orient=yes])

dnl Support --enable-newlib-nano-malloc
dnl This option is also read in libc/configure.in.  It is repeated
dnl here so that it shows up in the help text.
AC_ARG_ENABLE(newlib-nano-malloc,
[  --enable-newlib-nano-malloc    use small-footprint nano-malloc implementation],
[if test "${newlib_nano_malloc+set}" != set; then
  case "${enableval}" in
    yes) newlib_nano_malloc=yes ;;
    no)  newlib_nano_malloc=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-nano-malloc option) ;;
  esac
 fi], [newlib_nano_malloc=])dnl
AM_CONDITIONAL(NEWLIB_NANO_MALLOC, test x$newlib_nano_malloc = xyes)

dnl Support --disable-newlib-unbuf-stream-opt
AC_ARG_ENABLE(newlib-unbuf-stream-opt,
[  --disable-newlib-unbuf-stream-opt    disable unbuffered stream optimization in streamio],
[if test "${newlib_unbuf_stream_opt+set}" != set; then
  case "${enableval}" in
    yes) newlib_unbuf_stream_opt=yes ;;
    no)  newlib_unbuf_stream_opt=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-unbuf-stream-opt option) ;;
  esac
 fi], [newlib_unbuf_stream_opt=yes])dnl

dnl Support --enable-lite-exit
dnl Lite exit is a size-reduced implementation of exit that doesn't invoke
dnl clean-up functions such as _fini or global destructors.
AC_ARG_ENABLE(lite-exit,
[  --enable-lite-exit	enable light weight exit],
[if test "${lite_exit+set}" != set; then
  case "${enableval}" in
    yes) lite_exit=yes ;;
    no)  lite_exit=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for lite-exit option) ;;
  esac
 fi], [lite_exit=no])dnl

dnl Support --enable-newlib-nano-formatted-io
dnl This option is also read in libc/configure.in.  It is repeated
dnl here so that it shows up in the help text.
AC_ARG_ENABLE(newlib_nano_formatted_io,
[  --enable-newlib-nano-formatted-io    Use small-footprint nano-formatted-IO implementation],
[case "${enableval}" in
   yes) newlib_nano_formatted_io=yes ;;
   no)  newlib_nano_formatted_io=no ;;
   *) AC_MSG_ERROR(bad value ${enableval} for newlib-nano-formatted-io) ;;
 esac],[newlib_nano_formatted_io=no])
AM_CONDITIONAL(NEWLIB_NANO_FORMATTED_IO, test x$newlib_nano_formatted_io = xyes)

dnl Support --enable-retargetable-locking
dnl This option is also read in libc/configure.in.  It is repeated
dnl here so that it shows up in the help text.
AC_ARG_ENABLE(newlib-retargetable-locking,
[  --enable-newlib-retargetable-locking    Allow locking routines to be retargeted at link time],
[case "${enableval}" in
   yes) newlib_retargetable_locking=yes ;;
   no)  newlib_retargetable_locking=no ;;
   *) AC_MSG_ERROR(bad value ${enableval} for newlib-retargetable-locking) ;;
 esac],[newlib_retargetable_locking=no])
AM_CONDITIONAL(NEWLIB_RETARGETABLE_LOCKING, test x$newlib_retargetable_locking = xyes)

dnl Support --enable-newlib-long-time_t
AC_ARG_ENABLE(newlib-long-time_t,
[  --enable-newlib-long-time_t   define time_t to long],
[if test "${newlib_long_time_t+set}" != set; then
  case "${enableval}" in
    yes) newlib_long_time_t=yes ;;
    no)  newlib_long_time_t=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-long-time_t option) ;;
  esac
 fi], [newlib_long_time_t=no])dnl

dnl Support --enable-newlib-use-gdtoa
AC_ARG_ENABLE(newlib-use-gdtoa,
[  --enable-newlib-use-gdtoa   Use gdtoa rather than legacy ldtoa],
[if test "${newlib_use_gdtoa+set}" != set; then
  case "${enableval}" in
    yes) newlib_use_gdtoa=yes ;;
    no)  newlib_use_gdtoa=no  ;;
    *)   AC_MSG_ERROR(bad value ${enableval} for newlib-use-gdtoa option) ;;
  esac
 fi], [newlib_use_gdtoa=yes])dnl

AM_ENABLE_MULTILIB(, ..)
NEWLIB_CONFIGURE(.)

dnl The following is being disabled because the mathfp library is
dnl not up to standard due to inaccuracies caused by some of the
dnl floating-point algorithms used.  If you wish to work on this,
dnl comment out the following line and uncomment out the lines
dnl following it to re-enable the feature.
newlib_hw_fp=false
#AC_ARG_ENABLE(newlib_hw_fp,
#[  --enable-newlib-hw-fp    Turn on hardware floating point math],
#[case "${enableval}" in
#   yes) newlib_hw_fp=true ;;
#   no)  newlib_hw_fp=false ;;
#   *) AC_MSG_ERROR(bad value ${enableval} for --enable-newlib-hw-fp) ;;
# esac],[newlib_hw_fp=false])
AM_CONDITIONAL(NEWLIB_HW_FP, test x$newlib_hw_fp = xtrue)

# These get added in the top-level configure.in, except in the case where
# newlib is being built natively.
LIBC_INCLUDE_GREP=`echo ${CC} | grep \/libc\/include`
if test -z "${LIBC_INCLUDE_GREP}"; then
  CC_FOR_NEWLIB="${CC} -I$PWD/targ-include -I${abs_newlib_basedir}/libc/include"
else
  CC_FOR_NEWLIB="${CC}"
fi
AC_SUBST(CC_FOR_NEWLIB)

m4_include([libc/acinclude.m4])
m4_include([libm/acinclude.m4])

if test -z "${with_multisubdir}"; then
  have_multisubdir=no
else
  have_multisubdir=yes
fi
AM_CONDITIONAL(HAVE_DOC, test x$have_multisubdir = xno)

# Some run-time support libraries provided by GCC (e.g. libgomp) use configure
# checks to detect certain features, e.g. availability of thread-local storage.
# The configure script generates a test program and tries to compile and link
# it.  It should use target libraries and startfiles of the build tree if
# available and not random ones from the installation prefix for this
# procedure.  The search directories specified by -B are a bit special, see
# for_each_path() in gcc.c of the GCC sources.  First a search is performed on
# all search paths with the multilib directory appended (if desired), then a
# second search is performed on demand with the base directory only.  For each
# multilib there is a "newlib" subdirectory.  This directory is specified by a
# -B option for the support libraries.  In order to find the newlib artifacts
# (ctr0.o, libc.a, libg.a and libm.a) they must be located in a proper multilib
# subdirectory withing the build directory.
AM_CONDITIONAL(HAVE_MULTISUBDIR, test x$have_multisubdir = xyes)

CRT0=
CRT0_DIR=
if test "x${have_crt0}" = "xyes"; then
  CRT0=crt0.o
  CRT0_DIR=libc/sys/${sys_dir}/
fi
AM_CONDITIONAL(HAVE_CRT0, test x$have_crt0 = xyes)
AC_SUBST(CRT0)
AC_SUBST(CRT0_DIR)

CRT1=${crt1}
CRT1_DIR=
if test -n "${crt1_dir}"; then
  CRT1_DIR=${crt1_dir}/
fi
AC_SUBST(CRT1)
AC_SUBST(CRT1_DIR)

# Put a plausible default for CC_FOR_BUILD in Makefile.
if test -z "$CC_FOR_BUILD"; then
  if test "x$cross_compiling" = "xno"; then
    CC_FOR_BUILD='$(CC)'
  else
    CC_FOR_BUILD=gcc
  fi
fi
AC_SUBST(CC_FOR_BUILD)

# Also set EXEEXT_FOR_BUILD.
if test "x$cross_compiling" = "xno"; then
  EXEEXT_FOR_BUILD='$(EXEEXT)'
else
  AC_CACHE_CHECK([for build system executable suffix], newlib_cv_build_exeext,
    [cat > ac_c_test.c << 'EOF'
int main() {
/* Nothing needed here */
}
EOF
    ${CC_FOR_BUILD} -o ac_c_test am_c_test.c 1>&5 2>&5
    newlib_cv_build_exeext=`echo ac_c_test.* | grep -v ac_c_test.c | sed -e s/ac_c_test//`
    rm -f ac_c_test*
    test x"${newlib_cv_build_exeext}" = x && newlib_cv_build_exeext=no])
  EXEEXT_FOR_BUILD=""
  test x"${newlib_cv_build_exeext}" != xno && EXEEXT_FOR_BUILD=${newlib_cv_build_exeext}
fi
AC_SUBST(EXEEXT_FOR_BUILD)

AC_DEFINE(_NEWLIB_VERSION, "NEWLIB_VERSION", [The newlib version in string format.])
AC_DEFINE(__NEWLIB__, NEWLIB_MAJOR_VERSION, [The newlib major version number.])
AC_DEFINE(__NEWLIB_MINOR__, NEWLIB_MINOR_VERSION, [The newlib minor version number.])
AC_DEFINE(__NEWLIB_PATCHLEVEL__, NEWLIB_PATCHLEVEL_VERSION, [The newlib patch level.])

if test "${newlib_elix_level}" -gt "0"; then
  AC_DEFINE_UNQUOTED(_ELIX_LEVEL, ${newlib_elix_level}, [EL/IX level])
fi

if test "${newlib_reent_check_verify}" = "yes"; then
  AC_DEFINE(_REENT_CHECK_VERIFY, 1, [Verify _REENT_CHECK macros allocate memory successfully.])
fi

if test "${newlib_io_c99_formats}" = "yes"; then
  AC_DEFINE(_WANT_IO_C99_FORMATS, 1, [Enable C99 formats support (e.g. %a, %zu, ...) in IO functions like printf/scanf.])
fi

if test "${newlib_register_fini}" = "yes"; then
  AC_DEFINE(_WANT_REGISTER_FINI, 1, [Register application finalization function using atexit.])
fi

if test "${newlib_io_long_long}" = "yes"; then
  AC_DEFINE(_WANT_IO_LONG_LONG, 1, [Define to enable long long type support in IO functions like printf/scanf.])
fi

if test "${newlib_io_long_double}" = "yes"; then
  AC_DEFINE(_WANT_IO_LONG_DOUBLE, 1, [Define to enable long double type support in IO functions like printf/scanf.])
fi

if test "${newlib_io_pos_args}" = "yes"; then
  AC_DEFINE(_WANT_IO_POS_ARGS, 1, [Positional argument support in printf functions enabled.])
fi

if test "${newlib_reent_small}" = "yes"; then
  AC_DEFINE(_WANT_REENT_SMALL, 1, [Optional reentrant struct support.  Used mostly on platforms with very restricted storage.])
fi

if test "${newlib_reent_binary_compat}" = "yes"; then
  AC_DEFINE(_WANT_REENT_BACKWARD_BINARY_COMPAT, 1, [Define to enable backward binary compatibility for struct _reent.])
fi

if test "${newlib_reent_thread_local}" = "yes"; then
  AC_DEFINE(_WANT_REENT_THREAD_LOCAL, 1, [Define to enable thread-local storage objects as a replacment for struct _reent members.])
fi

_mb_len_max=1
if test "${newlib_mb}" = "yes"; then
  AC_DEFINE(_MB_CAPABLE, 1, [Multibyte supported.])
  _mb_len_max=8
fi
AC_DEFINE_UNQUOTED(_MB_LEN_MAX, $_mb_len_max, [Multibyte max length.])

dnl These are AC_SUBST instead of AC_DEFINE as they're hand maintained in a
dnl dedicated _newlib_version.h, and we don't want them in newlib.h.
AC_SUBST([NEWLIB_VERSION])
AC_SUBST([NEWLIB_MAJOR_VERSION])
AC_SUBST([NEWLIB_MINOR_VERSION])
AC_SUBST([NEWLIB_PATCHLEVEL_VERSION])

if test "${newlib_iconv}" = "yes"; then
  AC_DEFINE(_ICONV_ENABLED, 1, [ICONV enabled.])
fi

if test "x${newlib_iconv_external_ccs}" = "xyes"; then
  if test "x${newlib_iconv}" = "x"; then
      AC_MSG_ERROR(--enable-newlib-iconv-external-ccs option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.)
  fi
  AC_DEFINE(_ICONV_ENABLE_EXTERNAL_CCS, 1, [Enable ICONV external CCS files loading capabilities.])
fi

if test "${newlib_atexit_dynamic_alloc}" = "yes"; then
  AC_DEFINE(_ATEXIT_DYNAMIC_ALLOC, 1, [If atexit() may dynamically allocate space for cleanup functions.])
fi

if test "${newlib_fvwrite_in_streamio}" = "yes"; then
  AC_DEFINE(_FVWRITE_IN_STREAMIO, 1, [Define if ivo supported in streamio.])
fi

if test "${newlib_fseek_optimization}" = "yes"; then
  AC_DEFINE(_FSEEK_OPTIMIZATION, 1, [Define if fseek functions support seek optimization.])
fi

if test "${newlib_wide_orient}" = "yes"; then
  AC_DEFINE(_WIDE_ORIENT, 1, [Define if wide char orientation is supported.])
fi

if test "${newlib_nano_malloc}" = "yes"; then
  AC_DEFINE(_NANO_MALLOC, 1, [nano version of malloc is used.])
fi

if test "${newlib_unbuf_stream_opt}" = "yes"; then
  AC_DEFINE(_UNBUF_STREAM_OPT, 1, [Define if unbuffered stream file optimization is supported.])
fi

if test "${lite_exit}" = "yes"; then
  AC_DEFINE(_LITE_EXIT, 1, [Define if lite version of exit supported.])
fi

if test "${newlib_nano_formatted_io}" = "yes"; then
  AC_DEFINE(_NANO_FORMATTED_IO, 1, [Define if small footprint nano-formatted-IO implementation used.])
fi

if test "${newlib_retargetable_locking}" = "yes"; then
  AC_DEFINE(_RETARGETABLE_LOCKING, 1, [Define if using retargetable functions for default lock routines.])
fi

if test "${newlib_long_time_t}" = "yes"; then
  AC_DEFINE(_WANT_USE_LONG_TIME_T, 1, [Define to use type long for time_t.])
fi

if test "${newlib_use_gdtoa}" = "yes"; then
  AC_DEFINE(_WANT_USE_GDTOA, 1, [Define if using gdtoa rather than legacy ldtoa.])
fi

dnl
dnl Parse --enable-newlib-iconv-encodings option argument
dnl

if test "x${iconv_encodings}" != "x" \
   || test "x${iconv_to_encodings}" != "x" \
   || test "x${iconv_from_encodings}" != "x"; then
  if test "x${newlib_iconv}" = "x"; then
      AC_MSG_ERROR([--enable-newlib-iconv-encodings, --enable-newlib-iconv-from-encodings and --enable-newlib-iconv-to-encodings option can't be used if iconv library is disabled, use --enable-newlib-iconv to enable it.])
  fi
  
  dnl Normalize encodings names and delete commas
  iconv_encodings=`echo "${iconv_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
  iconv_to_encodings=`echo "${iconv_to_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
  iconv_from_encodings=`echo "${iconv_from_encodings}" | sed -e 's/,/ /g' -e 's/-/_/g' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
 
  dnl Get the list of available encodings excluding comments
  dnl Join line with previous if the first character is whitespace
  available_encodings=`cat "${srcdir}/libc/iconv/encoding.aliases" | sed -e '/^#.*/d'`
  
  dnl Check if required encodings are supported
  dnl Convert aliases to names
  
  dnl iconv_encodings
  iconv_encodings1="${iconv_encodings}"
  iconv_encodings=""
  for encoding in ${iconv_encodings1}; do
      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
      if test $? != "0"; then
	  AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
      fi
      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
      iconv_encodings="${iconv_encodings} ${encoding1}"
  done
  dnl Enable appropriate option in newlib.h
  for encoding in ${iconv_encodings}; do
      opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
      eval "$opt=1"
      opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
      eval "$opt=1"
  done

  dnl iconv_to_encodings
  iconv_encodings1="${iconv_to_encodings}"
  iconv_to_encodings=""
  for encoding in ${iconv_encodings1}; do
      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
      if test $? != "0"; then
	  AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
      fi
      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
      iconv_to_encodings="${iconv_to_encodings} ${encoding1}"
  done
  dnl Enable appropriate option in newlib.h
  for encoding in ${iconv_to_encodings}; do
      opt=_ICONV_TO_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
      eval "$opt=1"
  done

  dnl iconv_from_encodings
  iconv_encodings1="${iconv_from_encodings}"
  iconv_from_encodings=""
  for encoding in ${iconv_encodings1}; do
      result=`echo "${available_encodings}" | grep -e "\(^\| \)${encoding}\( \|\$\)"`
      if test $? != "0"; then
	  AC_MSG_ERROR(${encoding} is not supported - see ${srcdir}/libc/iconv/encoding.aliases file for the list of available encodings)
      fi
      encoding1=`echo "${result}" | sed -e 's/\(^[[^ ]]*\).*$/\1/'`
      iconv_from_encodings="${iconv_from_encodings} ${encoding1}"
  done
  dnl Enable appropriate option in newlib.h
  for encoding in ${iconv_from_encodings}; do
      opt=_ICONV_FROM_ENCODING_`echo "${encoding}" | sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
      eval "$opt=1"
  done
fi;
NEWLIB_ICONV_DEFINES

AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
	       newlib_cv_initfinit_array, [dnl
cat > conftest.c <<EOF
int _start (void) { return 0; }
int __start (void) { return 0; }
int foo (void) { return 1; }
int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  if ${READELF} -S conftest | grep -e INIT_ARRAY > /dev/null; then
    newlib_cv_initfinit_array=yes
  else
    newlib_cv_initfinit_array=no
  fi
else
  newlib_cv_initfinit_array=no
fi
rm -f conftest*])
if test $newlib_cv_initfinit_array = yes; then
  AC_DEFINE(_HAVE_INITFINI_ARRAY, 1, [Define if the linker supports .preinit_array/.init_array/.fini_array sections.])
fi

AC_CACHE_CHECK(if $CC accepts -fno-tree-loop-distribute-patterns with \
__attribute__ ((__optimize__)), newlib_cv_cc_loop_to_function, [dnl
cat > conftest.c <<EOF
void
__attribute__ ((__optimize__ ("-fno-tree-loop-distribute-patterns")))
foo (void) {}
EOF
newlib_cv_cc_loop_to_function=no
if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c
			    -fno-tree-loop-distribute-patterns conftest.c])
then
  newlib_cv_cc_loop_to_function=yes
fi
rm -f conftest*])
if test $newlib_cv_cc_loop_to_function = yes; then
  AC_DEFINE(_HAVE_CC_INHIBIT_LOOP_TO_LIBCALL, 1, [Define if compiler supports -fno-tree-loop-distribute-patterns.])
fi

AC_TYPE_LONG_DOUBLE
dnl Export the setting for our installed headers to check.
if test $ac_cv_type_long_double = yes; then
  AC_DEFINE(_HAVE_LONG_DOUBLE, 1, [Define if the platform supports long double type.])
fi
AM_CONDITIONAL(HAVE_LONG_DOUBLE, test x"$ac_cv_type_long_double" = x"yes")

AC_CACHE_CHECK(whether long double equals double,
	       newlib_cv_ldbl_eq_dbl, [dnl
cat > conftest.c <<EOF
#include <float.h>
#if DBL_MANT_DIG == LDBL_MANT_DIG  &&  LDBL_MIN_EXP == DBL_MIN_EXP  && \
    LDBL_MAX_EXP == DBL_MAX_EXP
  #define _LDBL_EQ_DBL
 #else
  #error "LDBL != DBL"
#endif
EOF
if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS -c -o conftest.o conftest.c
							1>&AS_MESSAGE_LOG_FD])
then
  newlib_cv_ldbl_eq_dbl=yes;
else
  newlib_cv_ldbl_eq_dbl=no;
fi
rm -f conftest*])
if test $newlib_cv_ldbl_eq_dbl = yes; then
  AC_DEFINE(_LDBL_EQ_DBL, 1, [Define if the platform long double type is equal to double.])
fi

AC_CONFIG_FILES([Makefile])
AC_OUTPUT