forked from zephyrproject-rtos/zephyr
-
Notifications
You must be signed in to change notification settings - Fork 1
/
CMakeLists.txt
1116 lines (966 loc) · 36.4 KB
/
CMakeLists.txt
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
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
project(Zephyr-Kernel VERSION ${PROJECT_VERSION})
enable_language(C CXX ASM)
# *DOCUMENTATION*
#
# Note that this is *NOT* the top-level CMakeLists.txt. That's in the
# application. See the Application Development Primer documentation
# for details.
#
# To see a list of typical targets execute "make usage"
# More info can be located in ./README.rst
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
# Verify that the toolchain can compile a dummy file, if it is not we
# won't be able to test for compatiblity with certain C flags.
check_c_compiler_flag("" toolchain_is_ok)
assert(toolchain_is_ok "The toolchain is unable to build a dummy C file. See CMakeError.log.")
set(CMAKE_EXECUTABLE_SUFFIX .elf)
if(NOT PROPERTY_LINKER_SCRIPT_DEFINES)
set_property(GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES -D__GCC_LINKER_CMD__)
endif()
define_property(GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT BRIEF_DOCS " " FULL_DOCS " ")
set_property( GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT elf32-little${ARCH})
# zephyr_interface is a source-less library that has all the global
# compiler options needed by all source files. All zephyr libraries,
# including the library named "zephyr" link with this library to
# obtain these flags.
add_library(zephyr_interface INTERFACE)
# zephyr is a catchall CMake library for source files that can be
# built purely with the include paths, defines, and other compiler
# flags that come with zephyr_interface.
zephyr_library_named(zephyr)
zephyr_include_directories(
kernel/include
arch/${ARCH}/include
arch/${ARCH}/soc/${SOC_PATH}
arch/${ARCH}/soc/${SOC_PATH}/include
arch/${ARCH}/soc/${SOC_FAMILY}/include
${BOARD_DIR}
include
include/drivers
${PROJECT_BINARY_DIR}/include/generated
${USERINCLUDE}
${STDINCLUDE}
)
zephyr_compile_definitions(
KERNEL
__ZEPHYR__=1
)
if(NOT CONFIG_COVERAGE)
zephyr_compile_definitions(
_FORTIFY_SOURCE=2
)
endif()
# We need to set an optimization level.
# Default to -Os
# unless CONFIG_NO_OPTIMIZATIONS is set, then it is -O0
# or unless CONFIG_DEBUG is set, then it is -Og
#
# also, some toolchain's break with -Os, and some toolchain's break
# with -Og so allow them to override what flag to use
#
# Finally, the user can use Kconfig to add compiler options that will
# come after these options and override them
set_ifndef(OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG "-O0")
set_ifndef(OPTIMIZE_FOR_DEBUG_FLAG "-Og")
set_ifndef(OPTIMIZE_FOR_SIZE_FLAG "-Os")
if(CONFIG_NO_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_NO_OPTIMIZATIONS_FLAG})
elseif(CONFIG_DEBUG_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_DEBUG_FLAG})
elseif(CONFIG_SIZE_OPTIMIZATIONS)
set(OPTIMIZATION_FLAG ${OPTIMIZE_FOR_SIZE_FLAG}) # Default
else()
assert(0 "Unreachable code. Expected optimization level to have been chosen. See misc/Kconfig.")
endif()
zephyr_compile_options(
${OPTIMIZATION_FLAG} # Usually -Os
-g # TODO: build configuration enough?
-Wall
-Wformat
-Wformat-security
-Wno-format-zero-length
-imacros ${AUTOCONF_H}
-ffreestanding
-Wno-main
${NOSTDINC_F}
)
zephyr_compile_options(
$<$<COMPILE_LANGUAGE:C>:-std=c99>
$<$<COMPILE_LANGUAGE:CXX>:-std=c++11>
$<$<COMPILE_LANGUAGE:CXX>:-fcheck-new>
$<$<COMPILE_LANGUAGE:CXX>:-ffunction-sections>
$<$<COMPILE_LANGUAGE:CXX>:-fdata-sections>
$<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>
$<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>
$<$<COMPILE_LANGUAGE:ASM>:-xassembler-with-cpp>
$<$<COMPILE_LANGUAGE:ASM>:-D_ASMLANGUAGE>
)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
-nostartfiles
-nodefaultlibs
-nostdlib
-static
-no-pie
)
endif()
# ==========================================================================
#
# cmake -DW=... settings
#
# W=1 - warnings that may be relevant and does not occur too often
# W=2 - warnings that occur quite often but may still be relevant
# W=3 - the more obscure warnings, can most likely be ignored
# ==========================================================================
if(W MATCHES "1")
zephyr_compile_options(
-Wextra
-Wunused
-Wno-unused-parameter
-Wmissing-declarations
-Wmissing-format-attribute
-Wold-style-definition
)
zephyr_cc_option(
-Wmissing-prototypes
-Wmissing-include-dirs
-Wunused-but-set-variable
-Wno-missing-field-initializers
)
endif()
if(W MATCHES "2")
zephyr_compile_options(
-Waggregate-return
-Wcast-align
-Wdisabled-optimization
-Wnested-externs
-Wshadow
)
zephyr_cc_option(
-Wlogical-op
-Wmissing-field-initializers
)
endif()
if(W MATCHES "3")
zephyr_compile_options(
-Wbad-function-cast
-Wcast-qual
-Wconversion
-Wpacked
-Wpadded
-Wpointer-arith
-Wredundant-decls
-Wswitch-default
)
zephyr_cc_option(
-Wpacked-bitfield-compat
-Wvla
)
endif()
# Allow the user to inject options when calling cmake, e.g.
# 'cmake -DEXTRA_CFLAGS="-Werror -Wno-deprecated-declarations" ..'
include(cmake/extra_flags.cmake)
if(CONFIG_READABLE_ASM)
zephyr_cc_option(-fno-reorder-blocks)
zephyr_cc_option(-fno-ipa-cp-clone)
zephyr_cc_option(-fno-partial-inlining)
endif()
zephyr_cc_option(-fno-asynchronous-unwind-tables)
zephyr_cc_option(-fno-pie)
zephyr_cc_option(-fno-pic)
zephyr_cc_option(-fno-strict-overflow)
zephyr_cc_option(-Wno-pointer-sign)
zephyr_compile_options_ifdef(CONFIG_STACK_CANARIES -fstack-protector-all)
if(CONFIG_OVERRIDE_FRAME_POINTER_DEFAULT)
if(CONFIG_OMIT_FRAME_POINTER)
zephyr_cc_option(-fomit-frame-pointer)
else()
zephyr_cc_option(-fno-omit-frame-pointer)
endif()
endif()
zephyr_compile_options(${CONFIG_COMPILER_OPT})
# TODO: Include arch compiler options at this point.
# TODO: This Clang check is broken
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
zephyr_cc_option(
-Wno-unknown-warning-option
-Wno-unused-variable
-Wno-format-invalid-specifier
-Wno-gnu
# comparison of unsigned expression < 0 is always false
-Wno-tautological-compare
)
else() # GCC assumed
zephyr_cc_option(
-Wno-unused-but-set-variable
-fno-reorder-functions
)
if(NOT ${ZEPHYR_TOOLCHAIN_VARIANT} STREQUAL "xcc")
zephyr_cc_option(-fno-defer-pop)
endif()
endif()
zephyr_cc_option_ifdef(CONFIG_DEBUG_SECTION_MISMATCH -fno-inline-functions-called-once)
zephyr_cc_option_ifdef(CONFIG_STACK_USAGE -fstack-usage)
zephyr_system_include_directories(${NOSTDINC})
# Force an error when things like SYS_INIT(foo, ...) occur with a missing header.
zephyr_cc_option(-Werror=implicit-int)
# Prohibit date/time macros, which would make the build non-deterministic
# cc-option(-Werror=date-time)
# TODO: Archiver arguments
# ar_option(D)
set_ifndef(LINKERFLAGPREFIX -Wl)
if(NOT CONFIG_NATIVE_APPLICATION)
zephyr_ld_options(
${LINKERFLAGPREFIX},-X
${LINKERFLAGPREFIX},-N
)
endif()
zephyr_ld_options(
${LINKERFLAGPREFIX},--gc-sections
${LINKERFLAGPREFIX},--build-id=none
)
if(CONFIG_HAVE_CUSTOM_LINKER_SCRIPT)
set(LINKER_SCRIPT ${APPLICATION_SOURCE_DIR}/${CONFIG_CUSTOM_LINKER_SCRIPT})
if(NOT EXISTS LINKER_SCRIPT)
set(LINKER_SCRIPT ${CONFIG_CUSTOM_LINKER_SCRIPT})
if(NOT EXISTS LINKER_SCRIPT)
message(FATAL_ERROR "CONFIG_HAVE_CUSTOM_LINKER_SCRIPT was set, but no linker script was found at '${CONFIG_CUSTOM_LINKER_SCRIPT}'")
endif()
endif()
else()
# Try a board specific linker file
set(LINKER_SCRIPT ${BOARD_DIR}/linker.ld)
if(NOT EXISTS ${LINKER_SCRIPT})
# If not available, try an SoC specific linker file
set(LINKER_SCRIPT ${ZEPHYR_BASE}/arch/${ARCH}/soc/${SOC_PATH}/linker.ld)
endif()
endif()
if(NOT EXISTS ${LINKER_SCRIPT})
message(FATAL_ERROR "Could not find linker script: '${LINKER_SCRIPT}'. Corrupted configuration?")
endif()
# Custom section support in linker scripts requires that the application source
# directory is in the preprocessor search path, in order to find the custom
# linker script fragments.
if(CONFIG_CUSTOM_RODATA_LD OR CONFIG_CUSTOM_RWDATA_LD OR CONFIG_CUSTOM_SECTIONS_LD)
zephyr_include_directories(${APPLICATION_SOURCE_DIR})
endif()
configure_file(version.h.in ${PROJECT_BINARY_DIR}/include/generated/version.h)
# Unfortunately, the order in which CMakeLists.txt code is processed
# matters so we need to be careful about how we order the processing
# of subdirectories. One example is "Compiler flags added late in the
# build are not exported to external build systems #5605"; when we
# integrate with an external build system we read out all compiler
# flags when the external project is created. So an external project
# defined in subsys or ext will not get global flags added by drivers/
# or tests/ as the subdirectories are ordered now.
#
# Another example of when the order matters is the reading and writing
# of global properties such as ZEPHYR_LIBS or
# GENERATED_KERNEL_OBJECT_FILES.
#
# Arch is placed early because it defines important compiler flags
# that must be exported to external build systems defined in
# e.g. subsys/.
add_subdirectory(arch)
add_subdirectory(lib)
add_subdirectory(misc)
# We use include instead of add_subdirectory to avoid creating a new directory scope.
# This is because source file properties are directory scoped, including the GENERATED
# property which is set implicitly for custom command outputs
include(misc/generated/CMakeLists.txt)
add_subdirectory(boards)
add_subdirectory(ext)
add_subdirectory(subsys)
add_subdirectory(drivers)
add_subdirectory(tests)
set(syscall_macros_h ${ZEPHYR_BINARY_DIR}/include/generated/syscall_macros.h)
add_custom_target(syscall_macros_h_target DEPENDS ${syscall_macros_h})
add_custom_command( OUTPUT ${syscall_macros_h}
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/gen_syscall_header.py
> ${syscall_macros_h}
DEPENDS ${PROJECT_SOURCE_DIR}/scripts/gen_syscall_header.py
)
# This command is a hack to support commands that are always run. Any
# target that depends on always_rebuild will always be rebuilt.
add_custom_command(OUTPUT always_rebuild COMMAND cmake -E echo Building for board ${BOARD})
set(syscall_list_h ${CMAKE_CURRENT_BINARY_DIR}/include/generated/syscall_list.h)
set(syscalls_json ${CMAKE_CURRENT_BINARY_DIR}/misc/generated/syscalls.json)
add_custom_command(
OUTPUT
${syscalls_json}
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/parse_syscalls.py
--include ${PROJECT_SOURCE_DIR}/include # Read files from this dir
--json-file ${syscalls_json} # Write this file
DEPENDS always_rebuild
)
add_custom_target(syscall_list_h_target DEPENDS ${syscall_list_h})
add_custom_command(OUTPUT include/generated/syscall_dispatch.c ${syscall_list_h}
# Also, some files are written to include/generated/syscalls/
COMMAND
${PYTHON_EXECUTABLE}
${PROJECT_SOURCE_DIR}/scripts/gen_syscalls.py
--json-file ${syscalls_json} # Read this file
--base-output include/generated/syscalls # Write to this dir
--syscall-dispatch include/generated/syscall_dispatch.c # Write this file
> ${syscall_list_h} # Write stdout to this file
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
DEPENDS ${syscalls_json}
)
# Generate offsets.c.obj from offsets.c
# Generate offsets.h from offsets.c.obj
set(OFFSETS_C_PATH ${ZEPHYR_BASE}/arch/${ARCH}/core/offsets/offsets.c)
set(OFFSETS_O_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/offsets.dir/arch/${ARCH}/core/offsets/offsets.c.obj)
set(OFFSETS_H_PATH ${PROJECT_BINARY_DIR}/include/generated/offsets.h)
add_library( offsets STATIC ${OFFSETS_C_PATH})
target_link_libraries(offsets zephyr_interface)
add_dependencies( offsets
syscall_list_h_target
syscall_macros_h_target
)
add_custom_command(
OUTPUT ${OFFSETS_H_PATH}
COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/gen_offset_header.py
-i ${OFFSETS_O_PATH}
-o ${OFFSETS_H_PATH}
DEPENDS offsets
)
add_custom_target(offsets_h DEPENDS ${OFFSETS_H_PATH})
zephyr_include_directories(${TOOLCHAIN_INCLUDES})
zephyr_get_include_directories_for_lang(C ZEPHYR_INCLUDES)
add_subdirectory(kernel)
# Read list content
get_property(ZEPHYR_LIBS_PROPERTY GLOBAL PROPERTY ZEPHYR_LIBS)
foreach(zephyr_lib ${ZEPHYR_LIBS_PROPERTY})
# TODO: Could this become an INTERFACE property of zephyr_interface?
add_dependencies(${zephyr_lib} offsets_h)
# Verify that all (non-imported) libraries have source
# files. Libraries without source files are not supported because
# they are an indication that something has been misconfigured.
get_target_property(lib_imported ${zephyr_lib} IMPORTED)
get_target_property(lib_sources ${zephyr_lib} SOURCES)
if(lib_sources STREQUAL lib_sources-NOTFOUND
AND (NOT (${zephyr_lib} STREQUAL app))
AND (NOT lib_imported)
)
# app is not checked because it's sources are added to it after
# this CMakeLists.txt file has been processed
message(FATAL_ERROR "\
The Zephyr library '${zephyr_lib}' was created without source files. \
Empty (non-imported) libraries are not supported. \
Either make sure that the library has the sources it should have, \
or make sure it is not created when it has no source files.")
endif()
endforeach()
get_property(OUTPUT_FORMAT GLOBAL PROPERTY PROPERTY_OUTPUT_FORMAT)
get_property(LINKER_SCRIPT_DEFINES GLOBAL PROPERTY PROPERTY_LINKER_SCRIPT_DEFINES)
if(CONFIG_APPLICATION_MEMORY)
# Objects default to being in kernel space, and then we exclude
# certain items.
set(kernel_object_file_list
${ZEPHYR_LIBS_PROPERTY}
kernel
)
list(
REMOVE_ITEM
kernel_object_file_list
app
)
# The zephyr libraries in zephyr/lib/ and zephyr/test/ belong in
# userspace.
# NB: The business logic for determing what source files are in
# kernel space and what source files are in user space is
# fragile. Fix ASAP.
#
# The intended design is that certain directories are designated as
# containing userspace code and others for kernel space code. The
# implementation we have however is not working on directories of
# code, it is working on zephyr libraries. It is exploiting the fact
# that zephyr libraries follow a naming scheme as described in
# extensions.cmake:zephyr_library_get_current_dir_lib_name
#
# But code from test/ and lib/ that is placed in the "zephyr"
# library (with zephyr_sources()) will not be in a library that is
# prefixed with lib__ or test__ and will end up in the wrong address
# space.
set(application_space_dirs
lib
tests
)
foreach(f ${kernel_object_file_list})
foreach(app_dir ${application_space_dirs})
if(${f} MATCHES "^${app_dir}__") # Begins with ${app_dir}__, e.g. lib__libc
list(
REMOVE_ITEM
kernel_object_file_list
${f}
)
endif()
endforeach()
endforeach()
# Create a list ks, with relative paths to kernel space libs.
foreach(f ${kernel_object_file_list})
get_target_property(target_name ${f} NAME)
get_target_property(target_binary_dir ${f} BINARY_DIR)
string(REPLACE
${PROJECT_BINARY_DIR}
""
fixed_path
${target_binary_dir}
)
# Append / if not empty
if(fixed_path)
set(fixed_path "${fixed_path}/")
endif()
# Cut off leading / if present
if(fixed_path MATCHES "^/.+")
string(SUBSTRING ${fixed_path} 1 -1 fixed_path)
endif()
set(fixed_path "${fixed_path}lib${target_name}.a")
if(CMAKE_GENERATOR STREQUAL "Ninja")
# Ninja invokes the linker from the root of the build directory
# (APPLICATION_BINARY_DIR) instead of from the build/zephyr
# directory (PROJECT_BINARY_DIR). So for linker-defs.h to get
# the correct path we need to prefix with zephyr/.
set(fixed_path "zephyr/${fixed_path}")
endif()
list(APPEND ks ${fixed_path})
endforeach()
# We are done constructing kernel_object_file_list, now we inject this
# information into the linker script through -D's
list(LENGTH kernel_object_file_list NUM_KERNEL_OBJECT_FILES)
list(APPEND LINKER_SCRIPT_DEFINES -DNUM_KERNEL_OBJECT_FILES=${NUM_KERNEL_OBJECT_FILES})
set(i 0)
foreach(f ${ks})
list(APPEND LINKER_SCRIPT_DEFINES -DKERNEL_OBJECT_FILE_${i}=${f})
math(EXPR i "${i}+1")
endforeach()
endif() # CONFIG_APPLICATION_MEMORY
# Declare MPU userspace dependencies before the linker scripts to make
# sure the order of dependencies are met
if(CONFIG_CPU_HAS_MPU AND CONFIG_USERSPACE)
if(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT AND CONFIG_APPLICATION_MEMORY)
set(ALIGN_SIZING_DEP app_sizing_prebuilt linker_app_sizing_script)
endif()
if(CONFIG_ARM)
set(PRIV_STACK_DEP priv_stacks_prebuilt)
endif()
endif()
function(construct_add_custom_command_for_linker_pass linker_output_name output_variable)
set(linker_cmd_file_name ${linker_output_name}.cmd)
if (${linker_output_name} MATCHES "^linker_pass_final$")
set(LINKER_PASS_DEFINE -DLINKER_PASS2)
else()
set(LINKER_PASS_DEFINE "")
endif()
# Different generators deal with depfiles differently.
if(CMAKE_GENERATOR STREQUAL "Unix Makefiles")
# Note that the IMPLICIT_DEPENDS option is currently supported only
# for Makefile generators and will be ignored by other generators.
set(LINKER_SCRIPT_DEP IMPLICIT_DEPENDS C ${LINKER_SCRIPT})
elseif(CMAKE_GENERATOR STREQUAL "Ninja")
# Using DEPFILE with other generators than Ninja is an error.
set(LINKER_SCRIPT_DEP DEPFILE ${PROJECT_BINARY_DIR}/${linker_cmd_file_name}.dep)
else()
# TODO: How would the linker script dependencies work for non-linker
# script generators.
message(STATUS "Warning; this generator is not well supported. The
Linker script may not be regenerated when it should.")
set(LINKER_SCRIPT_DEP "")
endif()
set(${output_variable}
OUTPUT ${linker_cmd_file_name}
DEPENDS ${LINKER_SCRIPT}
${LINKER_SCRIPT_DEP}
COMMAND ${CMAKE_C_COMPILER}
-x assembler-with-cpp
${NOSTDINC_F}
-undef
-MD -MF ${linker_cmd_file_name}.dep -MT ${BASE_NAME}/${linker_cmd_file_name}
${ZEPHYR_INCLUDES}
${LINKER_SCRIPT_DEFINES}
${LINKER_PASS_DEFINE}
-E ${LINKER_SCRIPT}
-P # Prevent generation of debug `#line' directives.
-o ${linker_cmd_file_name}
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
PARENT_SCOPE
)
endfunction()
get_filename_component(BASE_NAME ${CMAKE_CURRENT_BINARY_DIR} NAME)
construct_add_custom_command_for_linker_pass(linker custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_script
DEPENDS
${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP}
linker.cmd
offsets_h
)
# Give the 'linker_script' target all of the include directories so
# that cmake can successfully find the linker_script's header
# dependencies.
zephyr_get_include_directories_for_lang(C
ZEPHYR_INCLUDE_DIRS
STRIP_PREFIX # Don't use a -I prefix
)
set_property(TARGET
linker_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
get_property(E_KERNEL_ENTRY GLOBAL PROPERTY E_KERNEL_ENTRY)
set(zephyr_lnk
${LINKERFLAGPREFIX},-Map=${PROJECT_BINARY_DIR}/${KERNEL_MAP_NAME}
-u_OffsetAbsSyms
-u_ConfigAbsSyms
${E_KERNEL_ENTRY}
${LINKERFLAGPREFIX},--start-group
${LINKERFLAGPREFIX},--whole-archive
${ZEPHYR_LIBS_PROPERTY}
${LINKERFLAGPREFIX},--no-whole-archive
kernel
${OFFSETS_O_PATH}
${LINKERFLAGPREFIX},--end-group
${LIB_INCLUDE_DIR}
-L${PROJECT_BINARY_DIR}
${TOOLCHAIN_LIBS}
)
if(CONFIG_GEN_ISR_TABLES)
# isr_tables.c is generated from zephyr_prebuilt by
# gen_isr_tables.py
add_custom_command(
OUTPUT isr_tables.c
COMMAND ${CMAKE_OBJCOPY}
-I ${OUTPUT_FORMAT}
-O binary
--only-section=.intList
$<TARGET_FILE:zephyr_prebuilt>
isrList.bin
COMMAND ${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/arch/common/gen_isr_tables.py
--output-source isr_tables.c
--kernel $<TARGET_FILE:zephyr_prebuilt>
--intlist isrList.bin
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--debug>
--sw-isr-table
--vector-table
DEPENDS zephyr_prebuilt
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_SOURCE_FILES isr_tables.c)
endif()
if(CONFIG_ARM AND CONFIG_USERSPACE)
set(GEN_PRIV_STACKS $ENV{ZEPHYR_BASE}/scripts/gen_priv_stacks.py)
set(PROCESS_PRIV_STACKS_GPERF $ENV{ZEPHYR_BASE}/scripts/process_gperf.py)
set(PRIV_STACKS priv_stacks_hash.gperf)
set(PRIV_STACKS_OUTPUT_SRC_PRE priv_stacks_hash_preprocessed.c)
set(PRIV_STACKS_OUTPUT_SRC priv_stacks_hash.c)
set(PRIV_STACKS_OUTPUT_OBJ priv_stacks_hash.c.obj)
set(PRIV_STACKS_OUTPUT_OBJ_RENAMED priv_stacks_hash_renamed.o)
# Essentially what we are doing here is extracting some information
# out of the nearly finished elf file, generating the source code
# for a hash table based on that information, and then compiling and
# linking the hash table back into a now even more nearly finished
# elf file.
# Use the script GEN_PRIV_STACKS to scan the kernel binary's
# (zephyr_prebuilt) DWARF information to produce a table of kernel
# objects (PRIV_STACKS) which we will then pass to gperf
add_custom_command(
OUTPUT ${PRIV_STACKS}
COMMAND
${PYTHON_EXECUTABLE}
${GEN_PRIV_STACKS}
--kernel $<TARGET_FILE:priv_stacks_prebuilt>
--output ${PRIV_STACKS}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_prebuilt
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS})
# Use gperf to generate C code (PRIV_STACKS_OUTPUT_SRC_PRE) which implements a
# perfect hashtable based on PRIV_STACKS
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC_PRE}
COMMAND
${GPERF} -C
--output-file ${PRIV_STACKS_OUTPUT_SRC_PRE}
${PRIV_STACKS}
DEPENDS priv_stacks
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src_pre DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC_PRE})
# For our purposes the code/data generated by gperf is not optimal.
#
# The script PROCESS_GPERF creates a new c file OUTPUT_SRC based on
# OUTPUT_SRC_PRE to greatly reduce the amount of code/data generated
# since we know we are always working with pointer values
add_custom_command(
OUTPUT ${PRIV_STACKS_OUTPUT_SRC}
COMMAND
${PROCESS_PRIV_STACKS_GPERF}
-i ${PRIV_STACKS_OUTPUT_SRC_PRE}
-o ${PRIV_STACKS_OUTPUT_SRC}
-p "struct _k_priv_stack_map"
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS priv_stacks_output_src_pre
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_src DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC})
# We need precise control of where generated text/data ends up in the final
# kernel image. Disable function/data sections and use objcopy to move
# generated data into special section names
add_library(priv_stacks_output_lib STATIC
${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_SRC}
)
target_link_libraries(priv_stacks_output_lib zephyr_interface)
# Turn off -ffunction-sections, etc.
# NB: Using a library instead of target_compile_options(priv_stacks_output_lib
# [...]) because a library's options have precedence
add_library(priv_stacks_output_lib_interface INTERFACE)
target_compile_options(priv_stacks_output_lib_interface INTERFACE
-fno-function-sections
-fno-data-sections
)
target_link_libraries(priv_stacks_output_lib priv_stacks_output_lib_interface)
set(PRIV_STACKS_OUTPUT_OBJ_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/priv_stacks_output_lib.dir/${PRIV_STACKS_OUTPUT_OBJ})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
COMMAND
${CMAKE_OBJCOPY}
--rename-section .bss=.priv_stacks.noinit
--rename-section .data=.priv_stacks.data
--rename-section .text=.priv_stacks.text
--rename-section .rodata=.priv_stacks.rodata
${PRIV_STACKS_OUTPUT_OBJ_PATH}
${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
DEPENDS priv_stacks_output_lib
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(priv_stacks_output_obj_renamed DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED})
add_library(priv_stacks_output_obj_renamed_lib STATIC IMPORTED GLOBAL)
set_property(
TARGET priv_stacks_output_obj_renamed_lib
PROPERTY
IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/${PRIV_STACKS_OUTPUT_OBJ_RENAMED}
)
add_dependencies(
priv_stacks_output_obj_renamed_lib
priv_stacks_output_obj_renamed
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_OBJECT_FILES priv_stacks_output_obj_renamed_lib)
endif()
if(CONFIG_USERSPACE)
set(GEN_KOBJ_LIST ${ZEPHYR_BASE}/scripts/gen_kobject_list.py)
set(PROCESS_GPERF ${ZEPHYR_BASE}/scripts/process_gperf.py)
set(OBJ_LIST kobject_hash.gperf)
set(OUTPUT_SRC_PRE kobject_hash_preprocessed.c)
set(OUTPUT_SRC kobject_hash.c)
set(OUTPUT_OBJ kobject_hash.c.obj)
set(OUTPUT_OBJ_RENAMED kobject_hash_renamed.o)
# Essentially what we are doing here is extracting some information
# out of the nearly finished elf file, generating the source code
# for a hash table based on that information, and then compiling and
# linking the hash table back into a now even more nearly finished
# elf file.
# Use the script GEN_KOBJ_LIST to scan the kernel binary's
# (zephyr_prebuilt) DWARF information to produce a table of kernel
# objects (OBJ_LIST) which we will then pass to gperf
add_custom_command(
OUTPUT ${OBJ_LIST}
COMMAND
${PYTHON_EXECUTABLE}
${GEN_KOBJ_LIST}
--kernel $<TARGET_FILE:zephyr_prebuilt>
--output ${OBJ_LIST}
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS zephyr_prebuilt
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(obj_list DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OBJ_LIST})
# Use gperf to generate C code (OUTPUT_SRC_PRE) which implements a
# perfect hashtable based on OBJ_LIST
add_custom_command(
OUTPUT ${OUTPUT_SRC_PRE}
COMMAND
${GPERF}
--output-file ${OUTPUT_SRC_PRE}
${OBJ_LIST}
DEPENDS obj_list ${OBJ_LIST}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_src_pre DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC_PRE})
# For our purposes the code/data generated by gperf is not optimal.
#
# The script PROCESS_GPERF creates a new c file OUTPUT_SRC based on
# OUTPUT_SRC_PRE to greatly reduce the amount of code/data generated
# since we know we are always working with pointer values
add_custom_command(
OUTPUT ${OUTPUT_SRC}
COMMAND
${PROCESS_GPERF}
-i ${OUTPUT_SRC_PRE}
-o ${OUTPUT_SRC}
-p "struct _k_object"
$<$<BOOL:${CMAKE_VERBOSE_MAKEFILE}>:--verbose>
DEPENDS output_src_pre ${OUTPUT_SRC_PRE}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_src DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC})
# We need precise control of where generated text/data ends up in the final
# kernel image. Disable function/data sections and use objcopy to move
# generated data into special section names
add_library(output_lib STATIC
${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_SRC}
)
# always compile kobject_hash.c at optimization -Os
set_source_files_properties(${OUTPUT_SRC} PROPERTIES COMPILE_FLAGS -Os)
target_link_libraries(output_lib zephyr_interface)
# Turn off -ffunction-sections, etc.
# NB: Using a library instead of target_compile_options(output_lib
# [...]) because a library's options have precedence
add_library(output_lib_interface INTERFACE)
target_compile_options(output_lib_interface INTERFACE
-fno-function-sections
-fno-data-sections
)
target_link_libraries(output_lib output_lib_interface)
set(OUTPUT_OBJ_PATH ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/output_lib.dir/${OUTPUT_OBJ})
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED}
COMMAND
${CMAKE_OBJCOPY}
--rename-section .data=.kobject_data.data
--rename-section .text=.kobject_data.text
--rename-section .rodata=.kobject_data.rodata
${OUTPUT_OBJ_PATH}
${OUTPUT_OBJ_RENAMED}
DEPENDS output_lib
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
)
add_custom_target(output_obj_renamed DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED})
add_library(output_obj_renamed_lib STATIC IMPORTED GLOBAL)
set_property(
TARGET output_obj_renamed_lib
PROPERTY
IMPORTED_LOCATION ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_OBJ_RENAMED}
)
add_dependencies(
output_obj_renamed_lib
output_obj_renamed
)
set_property(GLOBAL APPEND PROPERTY GENERATED_KERNEL_OBJECT_FILES output_obj_renamed_lib)
endif()
# Read global variables into local variables
get_property(GKOF GLOBAL PROPERTY GENERATED_KERNEL_OBJECT_FILES)
get_property(GKSF GLOBAL PROPERTY GENERATED_KERNEL_SOURCE_FILES)
get_property(TOPT GLOBAL PROPERTY TOPT)
set_ifndef( TOPT -T)
configure_file(
$ENV{ZEPHYR_BASE}/include/arch/arm/cortex_m/scripts/app_data_alignment.ld
${PROJECT_BINARY_DIR}/include/generated/app_data_alignment.ld)
if(CONFIG_CPU_HAS_MPU AND CONFIG_USERSPACE)
if(CONFIG_MPU_REQUIRES_POWER_OF_TWO_ALIGNMENT AND CONFIG_APPLICATION_MEMORY)
construct_add_custom_command_for_linker_pass(linker_app_sizing custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_app_sizing_script
DEPENDS
linker_app_sizing.cmd
offsets_h
)
set_property(TARGET
linker_app_sizing_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
# For systems with MPUs, the size of the application data section must
# be determined so that MPU alignment requirements can be met.
# Create a app_sizing_prebuilt target so we can do this before the
# other ELF files are built
set(GEN_APP_ALIGN $ENV{ZEPHYR_BASE}/scripts/gen_alignment_script.py)
add_executable( app_sizing_prebuilt misc/empty_file.c)
target_link_libraries(app_sizing_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker_app_sizing.cmd ${zephyr_lnk})
set_property(TARGET app_sizing_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_app_sizing.cmd)
add_dependencies( app_sizing_prebuilt linker_app_sizing_script offsets)
add_custom_command(
TARGET app_sizing_prebuilt
POST_BUILD
COMMAND ${PYTHON_EXECUTABLE} ${GEN_APP_ALIGN}
--output ./include/generated/app_data_alignment.ld
--kernel $<TARGET_FILE:app_sizing_prebuilt>
VERBATIM
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/
)
endif()
if(CONFIG_ARM)
construct_add_custom_command_for_linker_pass(linker_priv_stacks custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_priv_stacks_script
DEPENDS
${ALIGN_SIZING_DEP}
linker_priv_stacks.cmd
offsets_h
)
set_property(TARGET
linker_priv_stacks_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
set(PRIV_STACK_LIB priv_stacks_output_obj_renamed_lib)
add_executable( priv_stacks_prebuilt misc/empty_file.c)
target_link_libraries(priv_stacks_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker_priv_stacks.cmd ${zephyr_lnk})
set_property(TARGET priv_stacks_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_priv_stacks.cmd)
add_dependencies( priv_stacks_prebuilt ${ALIGN_SIZING_DEP} linker_priv_stacks_script offsets)
endif()
endif()
# FIXME: Is there any way to get rid of empty_file.c?
add_executable( zephyr_prebuilt misc/empty_file.c)
target_link_libraries(zephyr_prebuilt ${TOPT} ${PROJECT_BINARY_DIR}/linker.cmd ${PRIV_STACK_LIB} ${zephyr_lnk})
set_property(TARGET zephyr_prebuilt PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker.cmd)
add_dependencies( zephyr_prebuilt ${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP} linker_script offsets)
if(NOT CONFIG_NATIVE_APPLICATION)
set(NOSTDINC_F -nostdinc)
endif()
if(GKOF OR GKSF)
set(logical_target_for_zephyr_elf kernel_elf)
# The second linker pass uses the same source linker script of the
# first pass (LINKER_SCRIPT), but this time with a different output
# file and preprocessed with the define LINKER_PASS2.
construct_add_custom_command_for_linker_pass(linker_pass_final custom_command)
add_custom_command(
${custom_command}
)
add_custom_target(
linker_pass_final_script
DEPENDS
${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP}
zephyr_prebuilt
linker_pass_final.cmd
offsets_h
)
set_property(TARGET
linker_pass_final_script
PROPERTY INCLUDE_DIRECTORIES
${ZEPHYR_INCLUDE_DIRS}
)
add_executable( kernel_elf misc/empty_file.c ${GKSF})
target_link_libraries(kernel_elf ${GKOF} ${TOPT} ${PROJECT_BINARY_DIR}/linker_pass_final.cmd ${zephyr_lnk})
set_property(TARGET kernel_elf PROPERTY LINK_DEPENDS ${PROJECT_BINARY_DIR}/linker_pass_final.cmd)
add_dependencies( kernel_elf ${ALIGN_SIZING_DEP} ${PRIV_STACK_DEP} linker_pass_final_script)
else()
set(logical_target_for_zephyr_elf zephyr_prebuilt)
# Use the prebuilt elf as the final elf since we don't have a
# generation stage.
endif()
# To avoid having the same logical target name for the zephyr lib and
# the zephyr elf, we set the kernel_elf file name to zephyr.elf.
set_target_properties(${logical_target_for_zephyr_elf} PROPERTIES OUTPUT_NAME ${KERNEL_NAME})