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1#
2# Copyright (c) 2016, Alliance for Open Media. All rights reserved.
3#
4# This source code is subject to the terms of the BSD 2 Clause License and the
5# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was
6# not distributed with this source code in the LICENSE file, you can obtain it
7# at www.aomedia.org/license/software. If the Alliance for Open Media Patent
8# License 1.0 was not distributed with this source code in the PATENTS file, you
9# can obtain it at www.aomedia.org/license/patent.
10#
11if(AOM_BUILD_CMAKE_AOM_CONFIGURE_CMAKE_)
12  return()
13endif() # AOM_BUILD_CMAKE_AOM_CONFIGURE_CMAKE_
14set(AOM_BUILD_CMAKE_AOM_CONFIGURE_CMAKE_ 1)
15
16include(FindThreads)
17
18include("${AOM_ROOT}/build/cmake/aom_config_defaults.cmake")
19include("${AOM_ROOT}/build/cmake/aom_experiment_deps.cmake")
20include("${AOM_ROOT}/build/cmake/aom_optimization.cmake")
21include("${AOM_ROOT}/build/cmake/compiler_flags.cmake")
22include("${AOM_ROOT}/build/cmake/compiler_tests.cmake")
23include("${AOM_ROOT}/build/cmake/util.cmake")
24
25if(DEFINED CONFIG_LOWBITDEPTH)
26  message(WARNING "CONFIG_LOWBITDEPTH has been removed. \
27    Use -DFORCE_HIGHBITDEPTH_DECODING=1 instead of -DCONFIG_LOWBITDEPTH=0 \
28    and -DFORCE_HIGHBITDEPTH_DECODING=0 instead of -DCONFIG_LOWBITDEPTH=1.")
29  if(NOT CONFIG_LOWBITDEPTH)
30    set(FORCE_HIGHBITDEPTH_DECODING
31        1
32        CACHE STRING "${cmake_cmdline_helpstring}" FORCE)
33  endif()
34endif()
35
36if(FORCE_HIGHBITDEPTH_DECODING AND NOT CONFIG_AV1_HIGHBITDEPTH)
37  change_config_and_warn(CONFIG_AV1_HIGHBITDEPTH 1
38                         "FORCE_HIGHBITDEPTH_DECODING")
39endif()
40
41if(CONFIG_THREE_PASS AND NOT CONFIG_AV1_DECODER)
42  change_config_and_warn(CONFIG_THREE_PASS 0 "CONFIG_AV1_DECODER=0")
43endif()
44
45# Generate the user config settings.
46list(APPEND aom_build_vars ${AOM_CONFIG_VARS} ${AOM_OPTION_VARS})
47foreach(cache_var ${aom_build_vars})
48  get_property(cache_var_helpstring CACHE ${cache_var} PROPERTY HELPSTRING)
49  if(cache_var_helpstring STREQUAL cmake_cmdline_helpstring)
50    set(AOM_CMAKE_CONFIG "${AOM_CMAKE_CONFIG} -D${cache_var}=${${cache_var}}")
51  endif()
52endforeach()
53string(STRIP "${AOM_CMAKE_CONFIG}" AOM_CMAKE_CONFIG)
54
55# Detect target CPU.
56if(NOT AOM_TARGET_CPU)
57  string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" cpu_lowercase)
58  if(cpu_lowercase STREQUAL "amd64" OR cpu_lowercase STREQUAL "x86_64")
59    if(CMAKE_SIZEOF_VOID_P EQUAL 4)
60      set(AOM_TARGET_CPU "x86")
61    elseif(CMAKE_SIZEOF_VOID_P EQUAL 8)
62      set(AOM_TARGET_CPU "x86_64")
63    else()
64      message(
65        FATAL_ERROR "--- Unexpected pointer size (${CMAKE_SIZEOF_VOID_P}) for\n"
66                    "      CMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME}\n"
67                    "      CMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}\n"
68                    "      CMAKE_GENERATOR=${CMAKE_GENERATOR}\n")
69    endif()
70  elseif(cpu_lowercase STREQUAL "i386" OR cpu_lowercase STREQUAL "x86")
71    set(AOM_TARGET_CPU "x86")
72  elseif(cpu_lowercase MATCHES "^arm")
73    set(AOM_TARGET_CPU "${cpu_lowercase}")
74  elseif(cpu_lowercase MATCHES "aarch64")
75    set(AOM_TARGET_CPU "arm64")
76  elseif(cpu_lowercase MATCHES "^ppc")
77    set(AOM_TARGET_CPU "ppc")
78  elseif(cpu_lowercase MATCHES "^riscv")
79    set(AOM_TARGET_CPU "riscv")
80  else()
81    message(WARNING "The architecture ${CMAKE_SYSTEM_PROCESSOR} is not "
82                    "supported, falling back to the generic target")
83    set(AOM_TARGET_CPU "generic")
84  endif()
85endif()
86
87if(CMAKE_TOOLCHAIN_FILE) # Add toolchain file to config string.
88  if(IS_ABSOLUTE "${CMAKE_TOOLCHAIN_FILE}")
89    file(RELATIVE_PATH toolchain_path "${AOM_CONFIG_DIR}"
90         "${CMAKE_TOOLCHAIN_FILE}")
91  else()
92    set(toolchain_path "${CMAKE_TOOLCHAIN_FILE}")
93  endif()
94  set(toolchain_string "-DCMAKE_TOOLCHAIN_FILE=\\\"${toolchain_path}\\\"")
95  set(AOM_CMAKE_CONFIG "${toolchain_string} ${AOM_CMAKE_CONFIG}")
96else()
97
98  # Add detected CPU to the config string.
99  set(AOM_CMAKE_CONFIG "-DAOM_TARGET_CPU=${AOM_TARGET_CPU} ${AOM_CMAKE_CONFIG}")
100endif()
101set(AOM_CMAKE_CONFIG "-G \\\"${CMAKE_GENERATOR}\\\" ${AOM_CMAKE_CONFIG}")
102file(RELATIVE_PATH source_path "${AOM_CONFIG_DIR}" "${AOM_ROOT}")
103set(AOM_CMAKE_CONFIG "cmake ${source_path} ${AOM_CMAKE_CONFIG}")
104string(STRIP "${AOM_CMAKE_CONFIG}" AOM_CMAKE_CONFIG)
105
106message("--- aom_configure: Detected CPU: ${AOM_TARGET_CPU}")
107set(AOM_TARGET_SYSTEM ${CMAKE_SYSTEM_NAME})
108
109string(TOLOWER "${CMAKE_BUILD_TYPE}" build_type_lowercase)
110if(build_type_lowercase STREQUAL "debug")
111  set(CONFIG_DEBUG 1)
112endif()
113
114if(BUILD_SHARED_LIBS)
115  set(CONFIG_PIC 1)
116  set(CONFIG_SHARED 1)
117elseif(NOT CONFIG_PIC)
118  # Update the variable only when it does not carry the CMake assigned help
119  # string for variables specified via the command line. This allows the user to
120  # force CONFIG_PIC=0.
121  unset(cache_helpstring)
122  get_property(cache_helpstring CACHE CONFIG_PIC PROPERTY HELPSTRING)
123  if(NOT "${cache_helpstring}" STREQUAL "${cmake_cmdline_helpstring}")
124    aom_check_c_compiles("pie_check" "
125                          #if !(__pie__ || __PIE__)
126                          #error Neither __pie__ or __PIE__ are set
127                          #endif
128                          extern void unused(void);
129                          void unused(void) {}" HAVE_PIE)
130
131    if(HAVE_PIE)
132      # If -fpie or -fPIE are used ensure the assembly code has PIC enabled to
133      # avoid DT_TEXTRELs: /usr/bin/ld: warning: creating DT_TEXTREL in a PIE
134      set(CONFIG_PIC 1)
135      message(
136        "CONFIG_PIC enabled for position independent executable (PIE) build")
137    endif()
138  endif()
139  unset(cache_helpstring)
140endif()
141
142if(NOT MSVC)
143  if(CONFIG_PIC)
144
145    # TODO(tomfinegan): clang needs -pie in CMAKE_EXE_LINKER_FLAGS for this to
146    # work.
147    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
148    if(AOM_TARGET_SYSTEM STREQUAL "Linux"
149       AND AOM_TARGET_CPU MATCHES "^armv[78]")
150      set(AOM_AS_FLAGS ${AOM_AS_FLAGS} --defsym PIC=1)
151    else()
152      set(AOM_AS_FLAGS ${AOM_AS_FLAGS} -DPIC)
153    endif()
154  endif()
155endif()
156
157if(AOM_TARGET_CPU STREQUAL "x86" OR AOM_TARGET_CPU STREQUAL "x86_64")
158  find_program(CMAKE_ASM_NASM_COMPILER yasm $ENV{YASM_PATH})
159  if(NOT CMAKE_ASM_NASM_COMPILER OR ENABLE_NASM)
160    unset(CMAKE_ASM_NASM_COMPILER CACHE)
161    find_program(CMAKE_ASM_NASM_COMPILER nasm $ENV{NASM_PATH})
162  endif()
163
164  include(CheckLanguage)
165  check_language(ASM_NASM)
166  if(CMAKE_ASM_NASM_COMPILER)
167    get_asm_obj_format("objformat")
168    unset(CMAKE_ASM_NASM_OBJECT_FORMAT)
169    set(CMAKE_ASM_NASM_OBJECT_FORMAT ${objformat})
170    enable_language(ASM_NASM)
171    if(CMAKE_ASM_NASM_COMPILER_ID STREQUAL "NASM")
172      test_nasm()
173    endif()
174    # Xcode requires building the objects manually, so pass the object format
175    # flag.
176    if(XCODE)
177      set(AOM_AS_FLAGS -f ${objformat} ${AOM_AS_FLAGS})
178    endif()
179  else()
180    message(
181      FATAL_ERROR
182        "Unable to find assembler. Install 'yasm' or 'nasm.' "
183        "To build without optimizations, add -DAOM_TARGET_CPU=generic to "
184        "your cmake command line.")
185  endif()
186  string(STRIP "${AOM_AS_FLAGS}" AOM_AS_FLAGS)
187elseif(AOM_TARGET_CPU MATCHES "arm")
188  if(AOM_TARGET_SYSTEM STREQUAL "Darwin")
189    if(NOT CMAKE_ASM_COMPILER)
190      set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
191    endif()
192    set(AOM_AS_FLAGS -arch ${AOM_TARGET_CPU} -isysroot ${CMAKE_OSX_SYSROOT})
193  elseif(AOM_TARGET_SYSTEM STREQUAL "Windows")
194    if(NOT CMAKE_ASM_COMPILER)
195      set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER} "-c -mimplicit-it=always")
196    endif()
197  else()
198    if(NOT CMAKE_ASM_COMPILER)
199      set(CMAKE_ASM_COMPILER as)
200    endif()
201  endif()
202  include(CheckLanguage)
203  check_language(ASM)
204  if(NOT CMAKE_ASM_COMPILER)
205    message(
206      FATAL_ERROR
207        "Unable to find assembler and optimizations are enabled."
208        "Searched for ${CMAKE_ASM_COMPILER}. Install it, add it to your path,"
209        "or set the assembler directly by adding "
210        "-DCMAKE_ASM_COMPILER=<assembler path> to your CMake command line."
211        "To build without optimizations, add -DAOM_TARGET_CPU=generic to your "
212        "cmake command line.")
213  endif()
214  enable_language(ASM)
215  string(STRIP "${AOM_AS_FLAGS}" AOM_AS_FLAGS)
216endif()
217
218if(CONFIG_ANALYZER)
219  find_package(wxWidgets REQUIRED adv base core)
220  include(${wxWidgets_USE_FILE})
221endif()
222
223if(NOT MSVC AND CMAKE_C_COMPILER_ID MATCHES "GNU\|Clang")
224  set(CONFIG_GCC 1)
225endif()
226
227if(CONFIG_GCOV)
228  message("--- Testing for CONFIG_GCOV support.")
229  require_linker_flag("-fprofile-arcs -ftest-coverage")
230  require_compiler_flag("-fprofile-arcs -ftest-coverage" YES)
231endif()
232
233if(CONFIG_GPROF)
234  message("--- Testing for CONFIG_GPROF support.")
235  require_compiler_flag("-pg" YES)
236endif()
237
238if(AOM_TARGET_SYSTEM MATCHES "Darwin\|Linux\|Windows\|Android")
239  set(CONFIG_OS_SUPPORT 1)
240endif()
241
242if(AOM_TARGET_SYSTEM STREQUAL "Windows")
243  # The default _WIN32_WINNT value in MinGW is 0x0502 (Windows XP with SP2). Set
244  # it to 0x0601 (Windows 7).
245  add_compiler_flag_if_supported("-D_WIN32_WINNT=0x0601")
246  # Quiet warnings related to fopen, printf, etc.
247  add_compiler_flag_if_supported("-D_CRT_SECURE_NO_WARNINGS")
248endif()
249
250#
251# Fix CONFIG_* dependencies. This must be done before including cpu.cmake to
252# ensure RTCD_CONFIG_* are properly set.
253fix_experiment_configs()
254
255# Don't just check for pthread.h, but use the result of the full pthreads
256# including a linking check in FindThreads above.
257set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
258aom_check_source_compiles("unistd_check" "#include <unistd.h>" HAVE_UNISTD_H)
259
260if(NOT WIN32)
261  aom_push_var(CMAKE_REQUIRED_LIBRARIES "m")
262  aom_check_c_compiles("fenv_check" "#define _GNU_SOURCE
263                        #include <fenv.h>
264                        void unused(void) {
265                          (void)unused;
266                          (void)feenableexcept(FE_DIVBYZERO | FE_INVALID);
267                        }" HAVE_FEXCEPT)
268  aom_pop_var(CMAKE_REQUIRED_LIBRARIES)
269endif()
270
271include("${AOM_ROOT}/build/cmake/cpu.cmake")
272
273if(ENABLE_CCACHE)
274  set_compiler_launcher(ENABLE_CCACHE ccache)
275endif()
276
277if(ENABLE_DISTCC)
278  set_compiler_launcher(ENABLE_DISTCC distcc)
279endif()
280
281if(ENABLE_GOMA)
282  set_compiler_launcher(ENABLE_GOMA gomacc)
283endif()
284
285if(NOT CONFIG_AV1_DECODER AND NOT CONFIG_AV1_ENCODER)
286  message(FATAL_ERROR "Decoder and encoder disabled, nothing to build.")
287endif()
288
289if(DECODE_HEIGHT_LIMIT OR DECODE_WIDTH_LIMIT)
290  change_config_and_warn(CONFIG_SIZE_LIMIT 1
291                         "DECODE_HEIGHT_LIMIT and DECODE_WIDTH_LIMIT")
292endif()
293
294if(CONFIG_SIZE_LIMIT)
295  if(NOT DECODE_HEIGHT_LIMIT OR NOT DECODE_WIDTH_LIMIT)
296    message(FATAL_ERROR "When setting CONFIG_SIZE_LIMIT, DECODE_HEIGHT_LIMIT "
297                        "and DECODE_WIDTH_LIMIT must be set.")
298  endif()
299endif()
300
301# Test compiler flags.
302if(MSVC)
303  # It isn't possible to specify C99 conformance for MSVC. MSVC doesn't support
304  # C++ standards modes earlier than C++14.
305  add_cxx_flag_if_supported("/std:c++14")
306  add_compiler_flag_if_supported("/W3")
307
308  # Disable MSVC warnings that suggest making code non-portable.
309  add_compiler_flag_if_supported("/wd4996")
310  if(ENABLE_WERROR)
311    add_compiler_flag_if_supported("/WX")
312  endif()
313
314  # Compile source files in parallel
315  add_compiler_flag_if_supported("/MP")
316else()
317  require_c_flag("-std=c99" YES)
318  if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang"
319     AND CMAKE_CXX_COMPILER_FRONTEND_VARIANT STREQUAL "GNU"
320     AND CMAKE_CXX_SIMULATE_ID STREQUAL "MSVC")
321    # Microsoft's C++ Standard Library requires C++14 as it's MSVC's default and
322    # minimum supported C++ version. If Clang is using this Standard Library
323    # implementation, it cannot target C++11.
324    require_cxx_flag_nomsvc("-std=c++14" YES)
325  elseif(CYGWIN AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
326    # The GNU C++ compiler in Cygwin needs the -std=gnu++11 flag to make the
327    # POSIX function declarations visible in the Standard C Library headers.
328    require_cxx_flag_nomsvc("-std=gnu++11" YES)
329  else()
330    require_cxx_flag_nomsvc("-std=c++11" YES)
331  endif()
332  add_compiler_flag_if_supported("-Wall")
333  add_compiler_flag_if_supported("-Wdisabled-optimization")
334  add_compiler_flag_if_supported("-Wextra")
335  # Prior to version 3.19.0 cmake would fail to parse the warning emitted by gcc
336  # with this flag. Note the order of this check and -Wextra-semi-stmt is
337  # important due to is_flag_present() matching substrings with string(FIND
338  # ...).
339  if(CMAKE_VERSION VERSION_LESS "3.19"
340     AND CMAKE_C_COMPILER_ID STREQUAL "GNU"
341     AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
342    add_cxx_flag_if_supported("-Wextra-semi")
343  else()
344    add_compiler_flag_if_supported("-Wextra-semi")
345  endif()
346  add_compiler_flag_if_supported("-Wextra-semi-stmt")
347  add_compiler_flag_if_supported("-Wfloat-conversion")
348  add_compiler_flag_if_supported("-Wformat=2")
349  add_c_flag_if_supported("-Wimplicit-function-declaration")
350  add_compiler_flag_if_supported("-Wlogical-op")
351  add_compiler_flag_if_supported("-Wmissing-declarations")
352  if(CMAKE_C_COMPILER_ID MATCHES "Clang")
353    add_compiler_flag_if_supported("-Wmissing-prototypes")
354  else()
355    add_c_flag_if_supported("-Wmissing-prototypes")
356  endif()
357  add_compiler_flag_if_supported("-Wpointer-arith")
358  add_compiler_flag_if_supported("-Wshadow")
359  add_compiler_flag_if_supported("-Wshorten-64-to-32")
360  add_compiler_flag_if_supported("-Wsign-compare")
361  add_compiler_flag_if_supported("-Wstring-conversion")
362  add_compiler_flag_if_supported("-Wtype-limits")
363  add_compiler_flag_if_supported("-Wundef")
364  add_compiler_flag_if_supported("-Wuninitialized")
365  add_compiler_flag_if_supported("-Wunreachable-code-aggressive")
366  add_compiler_flag_if_supported("-Wunused")
367  add_compiler_flag_if_supported("-Wvla")
368  add_cxx_flag_if_supported("-Wc++14-extensions")
369  add_cxx_flag_if_supported("-Wc++17-extensions")
370  add_cxx_flag_if_supported("-Wc++20-extensions")
371
372  if(CMAKE_C_COMPILER_ID MATCHES "GNU" AND SANITIZE MATCHES "address|undefined")
373
374    # This combination has more stack overhead, so we account for it by
375    # providing higher stack limit than usual.
376    add_c_flag_if_supported("-Wstack-usage=285000")
377    add_cxx_flag_if_supported("-Wstack-usage=270000")
378  elseif(CONFIG_RD_DEBUG) # Another case where higher stack usage is expected.
379    add_c_flag_if_supported("-Wstack-usage=135000")
380    add_cxx_flag_if_supported("-Wstack-usage=240000")
381  else()
382    add_c_flag_if_supported("-Wstack-usage=100000")
383    add_cxx_flag_if_supported("-Wstack-usage=240000")
384  endif()
385
386  if(CMAKE_C_COMPILER_ID MATCHES "GNU" AND SANITIZE MATCHES "address")
387    # Disable no optimization warning when compiling with sanitizers
388    add_compiler_flag_if_supported("-Wno-disabled-optimization")
389  endif()
390
391  # Quiet gcc 6 vs 7 abi warnings:
392  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
393  if(AOM_TARGET_CPU MATCHES "arm")
394    add_cxx_flag_if_supported("-Wno-psabi")
395  endif()
396
397  if(ENABLE_WERROR)
398    add_compiler_flag_if_supported("-Werror")
399  endif()
400
401  if(build_type_lowercase MATCHES "rel")
402    add_compiler_flag_if_supported("-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0")
403  endif()
404  add_compiler_flag_if_supported("-D_LARGEFILE_SOURCE")
405  add_compiler_flag_if_supported("-D_FILE_OFFSET_BITS=64")
406
407  # Do not allow implicit vector type conversions on Clang builds (this is
408  # already the default on GCC builds).
409  if(CMAKE_C_COMPILER_ID MATCHES "Clang")
410    # Clang 8.0.1 (in Cygwin) doesn't support -flax-vector-conversions=none.
411    add_compiler_flag_if_supported("-flax-vector-conversions=none")
412  endif()
413endif()
414
415# Prior to r23, or with ANDROID_USE_LEGACY_TOOLCHAIN_FILE set,
416# android.toolchain.cmake would set normal (non-cache) versions of variables
417# like CMAKE_C_FLAGS_RELEASE which would mask the ones added to the cache
418# variable in add_compiler_flag_if_supported(), etc. As a workaround we add
419# everything accumulated in AOM_C/CXX_FLAGS to the normal versions. This could
420# also be addressed by reworking the flag tests and adding the results directly
421# to target_compile_options() as in e.g., libgav1, but that's a larger task.
422# https://github.com/android/ndk/wiki/Changelog-r23#changes
423if(ANDROID
424   AND ("${ANDROID_NDK_MAJOR}" LESS 23 OR ANDROID_USE_LEGACY_TOOLCHAIN_FILE))
425  foreach(lang C;CXX)
426    string(STRIP "${AOM_${lang}_FLAGS}" AOM_${lang}_FLAGS)
427    if(AOM_${lang}_FLAGS)
428      foreach(config ${AOM_${lang}_CONFIGS})
429        set(${config} "${${config}} ${AOM_${lang}_FLAGS}")
430      endforeach()
431    endif()
432  endforeach()
433endif()
434
435set(AOM_LIB_LINK_TYPE PUBLIC)
436if(EMSCRIPTEN)
437
438  # Avoid CMake generation time errors resulting from collisions with the form
439  # of target_link_libraries() used by Emscripten.cmake.
440  unset(AOM_LIB_LINK_TYPE)
441endif()
442
443# Generate aom_config templates.
444set(aom_config_asm_template "${AOM_CONFIG_DIR}/config/aom_config.asm.cmake")
445set(aom_config_h_template "${AOM_CONFIG_DIR}/config/aom_config.h.cmake")
446execute_process(
447  COMMAND ${CMAKE_COMMAND}
448          -DAOM_CONFIG_DIR=${AOM_CONFIG_DIR} -DAOM_ROOT=${AOM_ROOT} -P
449          "${AOM_ROOT}/build/cmake/generate_aom_config_templates.cmake")
450
451# Generate aom_config.{asm,h}.
452configure_file("${aom_config_asm_template}"
453               "${AOM_CONFIG_DIR}/config/aom_config.asm")
454configure_file("${aom_config_h_template}"
455               "${AOM_CONFIG_DIR}/config/aom_config.h")
456
457# Read the current git hash.
458find_package(Git)
459if(NOT GIT_FOUND)
460  message("--- Git missing, version will be read from CHANGELOG.")
461endif()
462
463string(TIMESTAMP year "%Y")
464configure_file("${AOM_ROOT}/build/cmake/aom_config.c.template"
465               "${AOM_CONFIG_DIR}/config/aom_config.c")
466
467# Find Perl and generate the RTCD sources.
468find_package(Perl)
469if(NOT PERL_FOUND)
470  message(FATAL_ERROR "Perl is required to build libaom.")
471endif()
472
473set(AOM_RTCD_CONFIG_FILE_LIST "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd_defs.pl"
474                              "${AOM_ROOT}/aom_scale/aom_scale_rtcd.pl"
475                              "${AOM_ROOT}/av1/common/av1_rtcd_defs.pl")
476set(AOM_RTCD_HEADER_FILE_LIST "${AOM_CONFIG_DIR}/config/aom_dsp_rtcd.h"
477                              "${AOM_CONFIG_DIR}/config/aom_scale_rtcd.h"
478                              "${AOM_CONFIG_DIR}/config/av1_rtcd.h")
479set(AOM_RTCD_SOURCE_FILE_LIST "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd.c"
480                              "${AOM_ROOT}/aom_scale/aom_scale_rtcd.c"
481                              "${AOM_ROOT}/av1/common/av1_rtcd.c")
482set(AOM_RTCD_SYMBOL_LIST aom_dsp_rtcd aom_scale_rtcd av1_rtcd)
483list(LENGTH AOM_RTCD_SYMBOL_LIST AOM_RTCD_CUSTOM_COMMAND_COUNT)
484math(EXPR AOM_RTCD_CUSTOM_COMMAND_COUNT "${AOM_RTCD_CUSTOM_COMMAND_COUNT} - 1")
485
486foreach(NUM RANGE ${AOM_RTCD_CUSTOM_COMMAND_COUNT})
487  list(GET AOM_RTCD_CONFIG_FILE_LIST ${NUM} AOM_RTCD_CONFIG_FILE)
488  list(GET AOM_RTCD_HEADER_FILE_LIST ${NUM} AOM_RTCD_HEADER_FILE)
489  list(GET AOM_RTCD_SOURCE_FILE_LIST ${NUM} AOM_RTCD_SOURCE_FILE)
490  list(GET AOM_RTCD_SYMBOL_LIST ${NUM} AOM_RTCD_SYMBOL)
491  execute_process(
492    COMMAND
493      ${PERL_EXECUTABLE} "${AOM_ROOT}/build/cmake/rtcd.pl"
494      --arch=${AOM_TARGET_CPU}
495      --sym=${AOM_RTCD_SYMBOL} ${AOM_RTCD_FLAGS}
496      --config=${AOM_CONFIG_DIR}/config/aom_config.h ${AOM_RTCD_CONFIG_FILE}
497    OUTPUT_FILE ${AOM_RTCD_HEADER_FILE})
498endforeach()
499
500# Generate aom_version.h.
501execute_process(COMMAND ${CMAKE_COMMAND}
502                        -DAOM_CONFIG_DIR=${AOM_CONFIG_DIR}
503                        -DAOM_ROOT=${AOM_ROOT}
504                        -DGIT_EXECUTABLE=${GIT_EXECUTABLE}
505                        -DPERL_EXECUTABLE=${PERL_EXECUTABLE} -P
506                        "${AOM_ROOT}/build/cmake/version.cmake")
507