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1 menu "Toolchain"
2
3 # Invisible option that makes sure the toolchain package always gets
4 # built
5 config BR2_TOOLCHAIN
6         bool
7         default y
8
9 # Should be selected for glibc or eglibc
10 config BR2_TOOLCHAIN_USES_GLIBC
11         bool
12         select BR2_USE_WCHAR
13         select BR2_ENABLE_LOCALE
14         select BR2_TOOLCHAIN_HAS_FULL_GETTEXT
15         select BR2_TOOLCHAIN_HAS_THREADS
16         select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
17         select BR2_TOOLCHAIN_HAS_THREADS_NPTL
18         select BR2_TOOLCHAIN_HAS_UCONTEXT
19         select BR2_TOOLCHAIN_SUPPORTS_PIE
20
21 config BR2_TOOLCHAIN_USES_UCLIBC
22         bool
23         # ucontext is only available for a subset of the supported
24         # architectures
25         select BR2_TOOLCHAIN_HAS_UCONTEXT if BR2_ARM_CPU_HAS_ARM || BR2_i386 \
26                 || BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el \
27                 || BR2_sparc || BR2_x86_64
28         select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_m68k && !BR2_microblaze && !BR2_STATIC_LIBS
29
30 config BR2_TOOLCHAIN_USES_MUSL
31         bool
32         select BR2_USE_WCHAR
33         select BR2_ENABLE_LOCALE
34         select BR2_TOOLCHAIN_HAS_THREADS
35         select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
36         select BR2_TOOLCHAIN_HAS_THREADS_NPTL
37         select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_STATIC_LIBS
38
39 choice
40         prompt "Toolchain type"
41         help
42           Select whether to use the toolchain provided by buildroot
43           or an external toolchain.
44
45           Some vendors provide toolchains in binary form, some in
46           source form.
47
48 config BR2_TOOLCHAIN_BUILDROOT
49         bool "Buildroot toolchain"
50         depends on BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
51
52 config BR2_TOOLCHAIN_EXTERNAL
53         bool "External toolchain"
54         help
55           Select if you want to use an existing cross-compiling
56           toolchain. Buildroot can either download automatically a
57           toolchain, or use an already installed toolchain.
58
59 endchoice
60
61 source "toolchain/toolchain-buildroot/Config.in"
62 source "toolchain/toolchain-external/Config.in"
63
64 # Generic toolchain options
65
66 # we want gdb config in the middle of both source and external
67 # toolchains, but mconf won't let us source the same file twice,
68 # so put it here instead
69 source "package/gdb/Config.in.host"
70
71 comment "Toolchain Generic Options"
72
73 # https://sourceware.org/bugzilla/show_bug.cgi?id=30730
74 # Affect toolchains built with binutils 2.40, still not fixed.
75 config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_30730
76         bool
77         default y if BR2_m68k_cf
78
79 # Atomic types can be:
80 #  - never lock-free
81 #  - sometimes lock-free
82 #  - always lock-free
83 # see https://en.cppreference.com/w/c/atomic/ATOMIC_LOCK_FREE_consts
84 #
85 # On most architectures, gcc provides "always lock-free" atomic types,
86 # but a few architectures are limited to "sometimes lock-free"
87 # types. This hidden option allows to know if the architecture
88 # provides "always lock-free" atomic types.
89 config BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
90         bool
91         default y
92         depends on !BR2_nios2
93         depends on !BR2_ARM_CPU_ARMV4
94         depends on !BR2_ARM_CPU_ARMV5
95         depends on !BR2_sparc_v8
96         depends on !BR2_m68k_cf5208
97         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
98
99 # GCC uses thunk functions to adjust the 'this' pointer when calling
100 # C++ member functions in classes derived with multiple inheritance.
101 # Generation of thunk functions requires support from the compiler
102 # back end. In the absence of that support target-independent code
103 # in the C++ front end is used to generate thunk functions, but it
104 # does not support vararg functions.
105 # or1k will support it in the gcc mainline starting with gcc-9.
106 config BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
107         bool
108         default y
109         depends on !BR2_or1k
110         depends on !BR2_xtensa
111
112 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43744. This bug
113 # reappeared on gcc 9.x and is still not fixed on gcc 11.x
114 config BR2_TOOLCHAIN_HAS_GCC_BUG_43744
115         bool
116         default y if !BR2_TOOLCHAIN_GCC_AT_LEAST_8
117         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_9
118         depends on BR2_sh
119
120 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261. This bug no
121 # longer exists in gcc 8.x.
122 config BR2_TOOLCHAIN_HAS_GCC_BUG_63261
123         bool
124         default y if BR2_microblaze
125         depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
126
127 # Prior to gcc 7.x, exception_ptr, nested_exception and future from
128 # libstdc++ would only be provided on architectures that support
129 # always lock-free atomic ints. See
130 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735. This issue has
131 # been removed in GCC 7.x, where exception propagation is now
132 # supported without lock-free atomic int.
133 config BR2_TOOLCHAIN_HAS_GCC_BUG_64735
134         bool
135         default y if !BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS && \
136                 !BR2_TOOLCHAIN_GCC_AT_LEAST_7
137
138 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485. This bug still
139 # exists in gcc 12.x
140 config BR2_TOOLCHAIN_HAS_GCC_BUG_68485
141         bool
142         default y if BR2_microblaze
143
144 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81426
145 config BR2_TOOLCHAIN_HAS_GCC_BUG_81426
146         bool
147         default y if BR2_sh
148
149 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83143
150 # Error: invalid operands (*UND* and .text sections) for `-' on sh4.
151 # This bug no longer exists in gcc 10.x but reappeared on gcc 11.x and
152 # it still not been fixed yet.
153 config BR2_TOOLCHAIN_HAS_GCC_BUG_83143
154         bool
155         default y if !BR2_TOOLCHAIN_GCC_AT_LEAST_10
156         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_11
157         depends on BR2_sh
158
159 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. This bug no
160 # longer exists in gcc 8.x.
161 config BR2_TOOLCHAIN_HAS_GCC_BUG_85180
162         bool
163         default y if BR2_microblaze
164         depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
165
166 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85862
167 # An infinite loop exists in the find_base_term() logic of 6.x
168 # on microblaze.  http://autobuild.buildroot.net/results/158e8ebb39713e1b436a5cc1a1916f46c30694df/
169 config BR2_TOOLCHAIN_HAS_GCC_BUG_85862
170         bool
171         default y if BR2_microblaze
172         depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7
173
174 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90620
175 # ICE: in do_output_reload, at reload1.c:7978 on microblaze.
176 # This bug no longer exists in gcc 10.x but reappeared in gcc 11.x
177 config BR2_TOOLCHAIN_HAS_GCC_BUG_90620
178         bool
179         default y if BR2_microblaze
180         depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_10 \
181                 || BR2_TOOLCHAIN_GCC_AT_LEAST_11
182
183 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93847
184 # ICE: compiler error: Segmentation fault on Nios II. This bug
185 # no longer exists in gcc 9.x.
186 config BR2_TOOLCHAIN_HAS_GCC_BUG_93847
187         bool
188         default y if BR2_nios2 && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
189
190 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99410
191 # Error: branch offset out of range on Nios II. This bug
192 # no longer exists in gcc 8.x but reappeared on gcc 9.x and still exists
193 # on gcc 12.x
194 config BR2_TOOLCHAIN_HAS_GCC_BUG_99410
195         bool
196         default y if !BR2_TOOLCHAIN_GCC_AT_LEAST_8
197         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_9
198         depends on BR2_nios2
199
200 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101737
201 # ICE: SH4 -Os causes internal compiler error. This bug
202 # still exists in gcc = 11.1.0
203 config BR2_TOOLCHAIN_HAS_GCC_BUG_101737
204         bool
205         default y if BR2_sh
206
207 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101915
208 # ICE: in extract_insn, at recog.c:2294 on microblaze.
209 # This bug still exists in gcc = 12.1.0
210 config BR2_TOOLCHAIN_HAS_GCC_BUG_101915
211         bool
212         default y if BR2_microblaze
213
214 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101916
215 # ICE: on SH4: Segmentation fault signal terminated program cc1.
216 # This bug still exists in gcc = 11.1.0
217 config BR2_TOOLCHAIN_HAS_GCC_BUG_101916
218         bool
219         default y if BR2_sh4
220
221 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101952
222 # ICE: on SH4: unaligned opcodes detected in executable segment.
223 # This bug still exists in gcc = 11.1.0
224 config BR2_TOOLCHAIN_HAS_GCC_BUG_101952
225         bool
226         default y if BR2_sh4
227
228 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104028
229 # ICE: on M68K: Error: value -16034 out of range
230 # This bug still exists in gcc = 11.1.0
231 config BR2_TOOLCHAIN_HAS_GCC_BUG_104028
232         bool
233         default y if BR2_m68k
234
235 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107728
236 # https://sourceware.org/bugzilla/show_bug.cgi?id=29621
237 config BR2_TOOLCHAIN_HAS_GCC_BUG_107728
238         bool
239         default y if BR2_microblazebe || BR2_microblazeel \
240                 || BR2_mips || BR2_mipsel \
241                 || BR2_nios2 \
242                 || BR2_or1k \
243                 || BR2_sh
244         depends on BR2_TOOLCHAIN_USES_GLIBC
245         depends on BR2_OPTIMIZE_0
246
247 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110934
248 # ICE: on M68K: in change_address_1, at emit-rtl.cc:2287
249 # This bug exists in gcc = 12.3.0 and gcc = 13.2.0
250 config BR2_TOOLCHAIN_HAS_GCC_BUG_110934
251         bool
252         default y if BR2_m68k
253
254 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111001
255 # ICE: on SH4: during RTL pass: sh_treg_combine2
256 # This bug exist in gcc = 13.2.0
257 config BR2_TOOLCHAIN_HAS_GCC_BUG_111001
258         bool
259         default y if BR2_sh
260         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_13
261         depends on BR2_OPTIMIZE_1 || \
262                    BR2_OPTIMIZE_2 || \
263                    BR2_OPTIMIZE_3
264
265 config BR2_TOOLCHAIN_HAS_NATIVE_RPC
266         bool
267
268 config BR2_USE_WCHAR
269         bool
270
271 config BR2_ENABLE_LOCALE
272         bool
273
274 config BR2_INSTALL_LIBSTDCPP
275         bool
276
277 config BR2_TOOLCHAIN_HAS_DLANG
278         bool
279
280 config BR2_TOOLCHAIN_HAS_FORTRAN
281         bool
282
283 config BR2_TOOLCHAIN_HAS_THREADS
284         bool
285
286 config BR2_TOOLCHAIN_HAS_THREADS_DEBUG
287         bool
288
289 config BR2_TOOLCHAIN_HAS_THREADS_NPTL
290         bool
291
292 config BR2_TOOLCHAIN_HAS_SSP
293         bool
294
295 config BR2_TOOLCHAIN_HAS_SSP_STRONG
296         bool
297         default y if BR2_TOOLCHAIN_HAS_SSP && BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
298
299 # This boolean is true if the toolchain provides a full featured
300 # ucontext implementation with ucontext_t and {get,make,set}context
301 config BR2_TOOLCHAIN_HAS_UCONTEXT
302         bool
303
304 config BR2_TOOLCHAIN_HAS_OPENMP
305         bool
306
307 config BR2_TOOLCHAIN_SUPPORTS_PIE
308         bool
309
310 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
311         bool "Copy gconv libraries"
312         depends on BR2_TOOLCHAIN_USES_GLIBC
313         help
314           The gconv libraries are used to convert between different
315           character sets (charsets).
316
317           Say 'y' if you need to store and/or display different
318           charsets.
319
320 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
321         string "Gconv libraries to copy"
322         depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
323         help
324           Set to the list of gconv libraries to copy.
325           Leave empty to copy all gconv libraries.
326
327           Specify only the basename of the libraries, leave
328           out the .so extension. Eg.:
329             IBM850 ISO8859-15 UNICODE
330
331           Note: the full set of gconv libs are ~8MiB (on ARM).
332
333 config BR2_TOOLCHAIN_EXTRA_LIBS
334         string "Extra toolchain libraries to be copied to target"
335         default BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS if BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS != "" # legacy
336         depends on !BR2_STATIC_LIBS
337         help
338           If your toolchain provides extra libraries that need to be
339           copied to the target filesystem, enter them here, separated
340           by spaces. The library should not include a suffix or any
341           type of pre/post wildcard.
342
343           Examples where this can be useful is for adding debug
344           libraries to the target like the GCC libsanitizer.
345           e.g. "libasan liblsan libtsan libubsan"
346
347 # This boolean is true if the toolchain provides a built-in full
348 # featured gettext implementation (glibc), and false if only a stub
349 # gettext implementation is provided (uclibc, musl)
350 config BR2_TOOLCHAIN_HAS_FULL_GETTEXT
351         bool
352
353 config BR2_TARGET_OPTIMIZATION
354         string "Target Optimizations"
355         default ""
356         help
357           Optimizations to use when building for the target host.
358           NOTE: gcc optimization level is defined in build options.
359
360 config BR2_TARGET_LDFLAGS
361         string "Target linker options"
362         help
363           Extra options to pass to the linker when building for the
364           target.
365
366           Note that options with a '$' sign (eg.
367           -Wl,-rpath='$ORIGIN/../lib') are not supported.
368
369 # Options for packages to depend on, if they require at least a
370 # specific version of the kernel headers.
371 # Toolchains should choose the adequate option (ie. the highest
372 # version, not all of them).
373 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
374         bool
375
376 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
377         bool
378         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
379
380 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
381         bool
382         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
383
384 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
385         bool
386         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
387
388 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
389         bool
390         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
391
392 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
393         bool
394         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
395
396 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
397         bool
398         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
399
400 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
401         bool
402         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
403
404 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
405         bool
406         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
407
408 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
409         bool
410         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
411
412 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
413         bool
414         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
415
416 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
417         bool
418         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
419
420 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
421         bool
422         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
423
424 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
425         bool
426         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
427
428 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
429         bool
430         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
431
432 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
433         bool
434         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
435
436 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
437         bool
438         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
439
440 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
441         bool
442         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
443
444 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
445         bool
446         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
447
448 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
449         bool
450         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
451
452 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
453         bool
454         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
455
456 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
457         bool
458         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
459
460 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
461         bool
462         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
463
464 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
465         bool
466         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
467
468 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
469         bool
470         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
471
472 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
473         bool
474         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
475
476 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
477         bool
478         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
479
480 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
481         bool
482         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
483
484 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
485         bool
486         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
487
488 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
489         bool
490         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
491
492 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
493         bool
494         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
495
496 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
497         bool
498         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
499
500 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
501         bool
502         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
503
504 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
505         bool
506         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
507
508 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
509         bool
510         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
511
512 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
513         bool
514         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
515
516 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
517         bool
518         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
519
520 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
521         bool
522         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
523
524 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
525         bool
526         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
527
528 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
529         bool
530         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
531
532 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
533         bool
534         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
535
536 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
537         bool
538         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
539
540 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
541         bool
542         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
543
544 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
545         bool
546         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
547
548 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
549         bool
550         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
551
552 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
553         bool
554         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
555
556 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
557         bool
558         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
559
560 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
561         bool
562         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
563
564 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
565         bool
566         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
567
568 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
569         bool
570         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
571
572 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
573         bool
574         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
575
576 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
577         bool
578         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
579
580 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
581         bool
582         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
583
584 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
585         bool
586         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
587
588 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
589         bool
590         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
591
592 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
593         bool
594         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
595
596 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
597         bool
598         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
599
600 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_16
601         bool
602         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
603
604 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_17
605         bool
606         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_16
607
608 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_18
609         bool
610         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_17
611
612 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_19
613         bool
614         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_18
615
616 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_0
617         bool
618         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_19
619
620 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1
621         bool
622         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_0
623
624 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_2
625         bool
626         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1
627
628 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_3
629         bool
630         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_2
631
632 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_4
633         bool
634         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_3
635
636 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_5
637         bool
638         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_4
639
640 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_6
641         bool
642         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_5
643
644 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_7
645         bool
646         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_6
647
648 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_8
649         bool
650         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_7
651
652 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_9
653         bool
654         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_8
655
656 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_10
657         bool
658         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_9
659         select BR2_TOOLCHAIN_HEADERS_LATEST
660
661 # This should be selected by the latest version, above, to indicate that
662 # Buildroot does not know of more recent headers than the ones selected.
663 # This allows using toolchains with headers more recent than Buildroot
664 # knows about, while still enforcing strict check for older headers.
665 config BR2_TOOLCHAIN_HEADERS_LATEST
666         bool
667
668 # This order guarantees that the highest version is set, as kconfig
669 # stops affecting a value on the first matching default.
670 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
671         string
672         default "6.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_10
673         default "6.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_9
674         default "6.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_8
675         default "6.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_7
676         default "6.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_6
677         default "6.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_5
678         default "6.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_4
679         default "6.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_3
680         default "6.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_2
681         default "6.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1
682         default "6.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_0
683         default "5.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_19
684         default "5.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_18
685         default "5.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_17
686         default "5.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_16
687         default "5.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_15
688         default "5.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_14
689         default "5.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_13
690         default "5.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_12
691         default "5.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_11
692         default "5.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_10
693         default "5.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_9
694         default "5.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_8
695         default "5.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
696         default "5.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
697         default "5.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
698         default "5.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
699         default "5.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
700         default "5.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
701         default "5.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
702         default "5.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
703         default "4.20" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
704         default "4.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
705         default "4.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
706         default "4.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
707         default "4.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
708         default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
709         default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
710         default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
711         default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
712         default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
713         default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
714         default "4.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
715         default "4.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
716         default "4.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
717         default "4.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
718         default "4.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
719         default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
720         default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
721         default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
722         default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
723         default "4.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
724         default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
725         default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
726         default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
727         default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
728         default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
729         default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
730         default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
731         default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
732         default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
733         default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
734         default "3.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
735         default "3.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
736         default "3.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
737         default "3.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
738         default "3.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
739         default "3.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
740         default "3.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
741         default "3.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
742         default "3.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
743         default "3.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
744         default "2.6"
745
746 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
747         bool
748
749 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
750         bool
751         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
752
753 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
754         bool
755         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
756
757 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
758         bool
759         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
760
761 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
762         bool
763         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
764
765 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
766         bool
767         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
768
769 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
770         bool
771         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
772
773 config BR2_TOOLCHAIN_GCC_AT_LEAST_5
774         bool
775         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
776
777 config BR2_TOOLCHAIN_GCC_AT_LEAST_6
778         bool
779         select BR2_TOOLCHAIN_GCC_AT_LEAST_5
780
781 config BR2_TOOLCHAIN_GCC_AT_LEAST_7
782         bool
783         select BR2_TOOLCHAIN_GCC_AT_LEAST_6
784
785 config BR2_TOOLCHAIN_GCC_AT_LEAST_8
786         bool
787         select BR2_TOOLCHAIN_GCC_AT_LEAST_7
788
789 config BR2_TOOLCHAIN_GCC_AT_LEAST_9
790         bool
791         select BR2_TOOLCHAIN_GCC_AT_LEAST_8
792
793 config BR2_TOOLCHAIN_GCC_AT_LEAST_10
794         bool
795         select BR2_TOOLCHAIN_GCC_AT_LEAST_9
796
797 config BR2_TOOLCHAIN_GCC_AT_LEAST_11
798         bool
799         select BR2_TOOLCHAIN_GCC_AT_LEAST_10
800
801 config BR2_TOOLCHAIN_GCC_AT_LEAST_12
802         bool
803         select BR2_TOOLCHAIN_GCC_AT_LEAST_11
804
805 config BR2_TOOLCHAIN_GCC_AT_LEAST_13
806         bool
807         select BR2_TOOLCHAIN_GCC_AT_LEAST_12
808
809 config BR2_TOOLCHAIN_GCC_AT_LEAST_14
810         bool
811         select BR2_TOOLCHAIN_GCC_AT_LEAST_13
812
813 # This order guarantees that the highest version is set, as kconfig
814 # stops affecting a value on the first matching default.
815 config BR2_TOOLCHAIN_GCC_AT_LEAST
816         string
817         default "14"    if BR2_TOOLCHAIN_GCC_AT_LEAST_14
818         default "13"    if BR2_TOOLCHAIN_GCC_AT_LEAST_13
819         default "12"    if BR2_TOOLCHAIN_GCC_AT_LEAST_12
820         default "11"    if BR2_TOOLCHAIN_GCC_AT_LEAST_11
821         default "10"    if BR2_TOOLCHAIN_GCC_AT_LEAST_10
822         default "9"     if BR2_TOOLCHAIN_GCC_AT_LEAST_9
823         default "8"     if BR2_TOOLCHAIN_GCC_AT_LEAST_8
824         default "7"     if BR2_TOOLCHAIN_GCC_AT_LEAST_7
825         default "6"     if BR2_TOOLCHAIN_GCC_AT_LEAST_6
826         default "5"     if BR2_TOOLCHAIN_GCC_AT_LEAST_5
827         default "4.9"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
828         default "4.8"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
829         default "4.7"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
830         default "4.6"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
831         default "4.5"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
832         default "4.4"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
833         default "4.3"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
834
835 config BR2_TOOLCHAIN_HAS_MNAN_OPTION
836         bool
837         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
838
839 config BR2_TOOLCHAIN_HAS_SYNC_1
840         bool
841         default y
842         depends on !BR2_m68k_cf
843         depends on !BR2_microblaze
844         depends on !BR2_sparc
845         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
846
847 config BR2_TOOLCHAIN_HAS_SYNC_2
848         bool
849         default y if BR2_TOOLCHAIN_HAS_SYNC_1
850
851 config BR2_TOOLCHAIN_HAS_SYNC_4
852         bool
853         default y
854         depends on !BR2_m68k_cf
855         depends on !BR2_sparc
856         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
857
858 # The availability of __sync for 8-byte types on ARM is somewhat
859 # complicated:
860 #
861 #  - It appeared in gcc starting with gcc 4.7.
862 #
863 #  - On ARMv7, there is no problem, it can be directly implemented in
864 #    userspace.
865 #
866 #  - On < ARMv7, it requires help from the kernel. Unfortunately, the
867 #    libgcc code implementing 8-byte __sync with the help from the
868 #    kernel calls __write() when a failure occurs, which is a function
869 #    internal to glibc, not available in uClibc and musl. This means
870 #    that the 8-byte __sync operations are not available on < ARMv7
871 #    with uClibc and musl. This problem was fixed as part of gcc
872 #    PR68059, which was backported to the gcc 5 branch, but isn't yet
873 #    part of any gcc 5.x release.
874 #
875 config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
876         bool
877         default y
878         depends on BR2_arm || BR2_armeb
879         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
880         depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
881
882 # 8-byte intrinsics available on most x86 CPUs, except a few old ones
883 config BR2_TOOLCHAIN_X86_HAS_SYNC_8
884         bool
885         default y
886         depends on BR2_i386
887         depends on !BR2_x86_i486
888         depends on !BR2_x86_c3
889         depends on !BR2_x86_winchip_c6
890         depends on !BR2_x86_winchip2
891
892 # 8-byte intrinsics available:
893 #  - On all 64 bits architecture
894 #  - On a certain combinations of ARM platforms
895 #  - On certain x86 32 bits CPUs
896 config BR2_TOOLCHAIN_HAS_SYNC_8
897         bool
898         default y if BR2_ARCH_IS_64
899         default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
900         default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
901
902 # libatomic is available since gcc 4.8, when thread support is enabled.
903 # However, the gcc logic in libatomic/configure.tgt does not recognize
904 # "uclinux" as a valid OS part of the target tuple, and therefore it
905 # does not build libatomic. The "uclinux" part of the tuple is used by
906 # Buildroot when BR2_BINFMT_FLAT=y. This broken logic has only been
907 # fixed for arm since gcc 10.1.0.
908 config BR2_TOOLCHAIN_HAS_LIBATOMIC
909         bool
910         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
911         depends on BR2_TOOLCHAIN_HAS_THREADS
912         depends on BR2_BINFMT_ELF || \
913                 (BR2_BINFMT_FLAT && BR2_arm && \
914                 BR2_TOOLCHAIN_GCC_AT_LEAST_10)
915
916 # __atomic intrinsics are available:
917 # - with gcc 4.8, either through built-ins or libatomic, on all
918 #   architectures. Since we don't want to separate the cases where
919 #   libatomic is needed vs. not needed, we simplify thing and only
920 #   support situations where libatomic is available, even if on some
921 #   architectures libatomic is not strictly needed as all __atomic
922 #   intrinsics might be built-in. The only case where libatomic is
923 #   missing entirely is when the toolchain does not have support for
924 #   threads. However, a package that does not need threads but still
925 #   uses atomics is quite a corner case, which does not warrant the
926 #   added complexity.
927 # - with gcc 4.7, libatomic did not exist, so only built-ins are
928 #   available. This means that __atomic can only be used in a subset
929 #   of the architectures
930 config BR2_TOOLCHAIN_HAS_ATOMIC
931         bool
932         default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
933         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
934         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
935         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
936         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
937
938 # - libquadmath is not needed/available on all architectures (but gcc
939 #   correctly handles this already).
940 # - At least, libquadmath is available on:
941 #   - i*86
942 #   - x86_64
943 #   - PowerPC with vector scalar (VSX) instruction set
944 # - When available, libquadmath requires wchar support.
945 config BR2_TOOLCHAIN_HAS_LIBQUADMATH
946         bool
947         default y if BR2_i386 || BR2_x86_64
948         default y if BR2_POWERPC_CPU_HAS_VSX
949
950 comment "Bare metal toolchain"
951
952 config BR2_TOOLCHAIN_BARE_METAL_BUILDROOT
953         bool "Build a bare metal toolchain"
954         select BR2_PACKAGE_NEWLIB_BARE_METAL
955         help
956           Select if you need a bare-metal toolchain for building
957           platform specific firmware images.
958
959 source "toolchain/toolchain-bare-metal-buildroot/Config.in"
960
961 endmenu
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