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(FindGit) 17include(FindPerl) 18include(FindThreads) 19 20include("${AOM_ROOT}/build/cmake/aom_config_defaults.cmake") 21include("${AOM_ROOT}/build/cmake/aom_experiment_deps.cmake") 22include("${AOM_ROOT}/build/cmake/aom_optimization.cmake") 23include("${AOM_ROOT}/build/cmake/compiler_flags.cmake") 24include("${AOM_ROOT}/build/cmake/compiler_tests.cmake") 25include("${AOM_ROOT}/build/cmake/util.cmake") 26 27if(DEFINED CONFIG_LOWBITDEPTH) 28 message(WARNING "CONFIG_LOWBITDEPTH has been removed. \ 29 Use -DFORCE_HIGHBITDEPTH_DECODING=1 instead of -DCONFIG_LOWBITDEPTH=0 \ 30 and -DFORCE_HIGHBITDEPTH_DECODING=0 instead of -DCONFIG_LOWBITDEPTH=1.") 31 if(NOT CONFIG_LOWBITDEPTH) 32 set(FORCE_HIGHBITDEPTH_DECODING 33 1 34 CACHE STRING "${cmake_cmdline_helpstring}" FORCE) 35 endif() 36endif() 37 38if(FORCE_HIGHBITDEPTH_DECODING AND NOT CONFIG_AV1_HIGHBITDEPTH) 39 change_config_and_warn(CONFIG_AV1_HIGHBITDEPTH 1 40 "FORCE_HIGHBITDEPTH_DECODING") 41endif() 42 43# Generate the user config settings. 44list(APPEND aom_build_vars ${AOM_CONFIG_VARS} ${AOM_OPTION_VARS}) 45foreach(cache_var ${aom_build_vars}) 46 get_property(cache_var_helpstring CACHE ${cache_var} PROPERTY HELPSTRING) 47 if("${cache_var_helpstring}" STREQUAL "${cmake_cmdline_helpstring}") 48 set(AOM_CMAKE_CONFIG "${AOM_CMAKE_CONFIG} -D${cache_var}=${${cache_var}}") 49 endif() 50endforeach() 51string(STRIP "${AOM_CMAKE_CONFIG}" AOM_CMAKE_CONFIG) 52 53# Detect target CPU. 54if(NOT AOM_TARGET_CPU) 55 string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" cpu_lowercase) 56 if("${cpu_lowercase}" STREQUAL "amd64" 57 OR "${cpu_lowercase}" STREQUAL "x86_64") 58 if(${CMAKE_SIZEOF_VOID_P} EQUAL 4) 59 set(AOM_TARGET_CPU "x86") 60 elseif(${CMAKE_SIZEOF_VOID_P} EQUAL 8) 61 set(AOM_TARGET_CPU "x86_64") 62 else() 63 message( 64 FATAL_ERROR "--- Unexpected pointer size (${CMAKE_SIZEOF_VOID_P}) for\n" 65 " CMAKE_SYSTEM_NAME=${CMAKE_SYSTEM_NAME}\n" 66 " CMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}\n" 67 " CMAKE_GENERATOR=${CMAKE_GENERATOR}\n") 68 endif() 69 elseif("${cpu_lowercase}" STREQUAL "i386" 70 OR "${cpu_lowercase}" STREQUAL "x86") 71 set(AOM_TARGET_CPU "x86") 72 elseif("${cpu_lowercase}" MATCHES "^arm" 73 OR "${cpu_lowercase}" MATCHES "^mips") 74 set(AOM_TARGET_CPU "${cpu_lowercase}") 75 elseif("${cpu_lowercase}" MATCHES "aarch64") 76 set(AOM_TARGET_CPU "arm64") 77 elseif("${cpu_lowercase}" MATCHES "^ppc") 78 set(AOM_TARGET_CPU "ppc") 79 else() 80 message(WARNING "The architecture ${CMAKE_SYSTEM_PROCESSOR} is not " 81 "supported, falling back to the generic target") 82 set(AOM_TARGET_CPU "generic") 83 endif() 84endif() 85 86if(CMAKE_TOOLCHAIN_FILE) # Add toolchain file to config string. 87 if(IS_ABSOLUTE "${CMAKE_TOOLCHAIN_FILE}") 88 file(RELATIVE_PATH toolchain_path "${AOM_CONFIG_DIR}" 89 "${CMAKE_TOOLCHAIN_FILE}") 90 else() 91 set(toolchain_path "${CMAKE_TOOLCHAIN_FILE}") 92 endif() 93 set(toolchain_string "-DCMAKE_TOOLCHAIN_FILE=\\\"${toolchain_path}\\\"") 94 set(AOM_CMAKE_CONFIG "${toolchain_string} ${AOM_CMAKE_CONFIG}") 95else() 96 97 # Add detected CPU to the config string. 98 set(AOM_CMAKE_CONFIG "-DAOM_TARGET_CPU=${AOM_TARGET_CPU} ${AOM_CMAKE_CONFIG}") 99endif() 100set(AOM_CMAKE_CONFIG "-G \\\"${CMAKE_GENERATOR}\\\" ${AOM_CMAKE_CONFIG}") 101file(RELATIVE_PATH source_path "${AOM_CONFIG_DIR}" "${AOM_ROOT}") 102set(AOM_CMAKE_CONFIG "cmake ${source_path} ${AOM_CMAKE_CONFIG}") 103string(STRIP "${AOM_CMAKE_CONFIG}" AOM_CMAKE_CONFIG) 104 105message("--- aom_configure: Detected CPU: ${AOM_TARGET_CPU}") 106set(AOM_TARGET_SYSTEM ${CMAKE_SYSTEM_NAME}) 107 108if("${CMAKE_BUILD_TYPE}" MATCHES "Deb") 109 set(CONFIG_DEBUG 1) 110endif() 111 112if(BUILD_SHARED_LIBS) 113 set(CONFIG_PIC 1) 114 set(CONFIG_SHARED 1) 115endif() 116 117if(NOT MSVC) 118 if(CONFIG_PIC) 119 120 # TODO(tomfinegan): clang needs -pie in CMAKE_EXE_LINKER_FLAGS for this to 121 # work. 122 set(CMAKE_POSITION_INDEPENDENT_CODE ON) 123 if("${AOM_TARGET_SYSTEM}" STREQUAL "Linux" 124 AND "${AOM_TARGET_CPU}" MATCHES "^armv[78]") 125 set(AOM_AS_FLAGS ${AOM_AS_FLAGS} --defsym PIC=1) 126 else() 127 set(AOM_AS_FLAGS ${AOM_AS_FLAGS} -DPIC) 128 endif() 129 endif() 130endif() 131 132if("${AOM_TARGET_CPU}" STREQUAL "x86" OR "${AOM_TARGET_CPU}" STREQUAL "x86_64") 133 find_program(AS_EXECUTABLE yasm $ENV{YASM_PATH}) 134 if(NOT AS_EXECUTABLE OR ENABLE_NASM) 135 unset(AS_EXECUTABLE CACHE) 136 find_program(AS_EXECUTABLE nasm $ENV{NASM_PATH}) 137 if(AS_EXECUTABLE) 138 test_nasm() 139 endif() 140 endif() 141 142 if(NOT AS_EXECUTABLE) 143 message( 144 FATAL_ERROR 145 "Unable to find assembler. Install 'yasm' or 'nasm.' " 146 "To build without optimizations, add -DAOM_TARGET_CPU=generic to " 147 "your cmake command line.") 148 endif() 149 get_asm_obj_format("objformat") 150 set(AOM_AS_FLAGS -f ${objformat} ${AOM_AS_FLAGS}) 151 string(STRIP "${AOM_AS_FLAGS}" AOM_AS_FLAGS) 152elseif("${AOM_TARGET_CPU}" MATCHES "arm") 153 if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin") 154 set(AS_EXECUTABLE as) 155 set(AOM_AS_FLAGS -arch ${AOM_TARGET_CPU} -isysroot ${CMAKE_OSX_SYSROOT}) 156 elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Windows") 157 if(NOT AS_EXECUTABLE) 158 set(AS_EXECUTABLE ${CMAKE_C_COMPILER} -c -mimplicit-it=always) 159 endif() 160 else() 161 if(NOT AS_EXECUTABLE) 162 set(AS_EXECUTABLE as) 163 endif() 164 endif() 165 find_program(as_executable_found ${AS_EXECUTABLE}) 166 if(NOT as_executable_found) 167 message( 168 FATAL_ERROR 169 "Unable to find assembler and optimizations are enabled." 170 "Searched for ${AS_EXECUTABLE}. Install it, add it to your path, or " 171 "set the assembler directly by adding -DAS_EXECUTABLE=<assembler path> " 172 "to your CMake command line." 173 "To build without optimizations, add -DAOM_TARGET_CPU=generic to your " 174 "cmake command line.") 175 endif() 176 string(STRIP "${AOM_AS_FLAGS}" AOM_AS_FLAGS) 177endif() 178 179if(CONFIG_ANALYZER) 180 include(FindwxWidgets) 181 find_package(wxWidgets REQUIRED adv base core) 182 include(${wxWidgets_USE_FILE}) 183endif() 184 185if(NOT MSVC AND CMAKE_C_COMPILER_ID MATCHES "GNU\|Clang") 186 set(CONFIG_GCC 1) 187endif() 188 189if(CONFIG_GCOV) 190 message("--- Testing for CONFIG_GCOV support.") 191 require_linker_flag("-fprofile-arcs -ftest-coverage") 192 require_compiler_flag("-fprofile-arcs -ftest-coverage" YES) 193endif() 194 195if(CONFIG_GPROF) 196 message("--- Testing for CONFIG_GPROF support.") 197 require_compiler_flag("-pg" YES) 198endif() 199 200if("${AOM_TARGET_SYSTEM}" MATCHES "Darwin\|Linux\|Windows\|Android") 201 set(CONFIG_OS_SUPPORT 1) 202endif() 203 204# The default _WIN32_WINNT value in MinGW is 0x0502 (Windows XP with SP2). Set 205# it to 0x0601 (Windows 7). 206if("${AOM_TARGET_SYSTEM}" STREQUAL "Windows") 207 add_compiler_flag_if_supported("-D_WIN32_WINNT=0x0601") 208endif() 209 210# 211# Fix CONFIG_* dependencies. This must be done before including cpu.cmake to 212# ensure RTCD_CONFIG_* are properly set. 213fix_experiment_configs() 214 215# Test compiler support. 216aom_get_inline("INLINE") 217 218# Don't just check for pthread.h, but use the result of the full pthreads 219# including a linking check in FindThreads above. 220set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT}) 221aom_check_source_compiles("unistd_check" "#include <unistd.h>" HAVE_UNISTD_H) 222 223if(NOT MSVC) 224 aom_push_var(CMAKE_REQUIRED_LIBRARIES "m") 225 aom_check_c_compiles("fenv_check" "#define _GNU_SOURCE 226 #include <fenv.h> 227 void unused(void) { 228 (void)unused; 229 (void)feenableexcept(FE_DIVBYZERO | FE_INVALID); 230 }" HAVE_FEXCEPT) 231 aom_pop_var(CMAKE_REQUIRED_LIBRARIES) 232endif() 233 234include("${AOM_ROOT}/build/cmake/cpu.cmake") 235 236if(ENABLE_CCACHE) 237 set_compiler_launcher(ENABLE_CCACHE ccache) 238endif() 239 240if(ENABLE_DISTCC) 241 set_compiler_launcher(ENABLE_DISTCC distcc) 242endif() 243 244if(ENABLE_GOMA) 245 set_compiler_launcher(ENABLE_GOMA gomacc) 246endif() 247 248if(NOT CONFIG_AV1_DECODER AND NOT CONFIG_AV1_ENCODER) 249 message(FATAL_ERROR "Decoder and encoder disabled, nothing to build.") 250endif() 251 252if(DECODE_HEIGHT_LIMIT OR DECODE_WIDTH_LIMIT) 253 change_config_and_warn(CONFIG_SIZE_LIMIT 1 254 "DECODE_HEIGHT_LIMIT and DECODE_WIDTH_LIMIT") 255endif() 256 257if(CONFIG_SIZE_LIMIT) 258 if(NOT DECODE_HEIGHT_LIMIT OR NOT DECODE_WIDTH_LIMIT) 259 message(FATAL_ERROR "When setting CONFIG_SIZE_LIMIT, DECODE_HEIGHT_LIMIT " 260 "and DECODE_WIDTH_LIMIT must be set.") 261 endif() 262endif() 263 264# Test compiler flags. 265if(MSVC) 266 add_compiler_flag_if_supported("/W3") 267 268 # Disable MSVC warnings that suggest making code non-portable. 269 add_compiler_flag_if_supported("/wd4996") 270 if(ENABLE_WERROR) 271 add_compiler_flag_if_supported("/WX") 272 endif() 273else() 274 require_c_flag("-std=c99" YES) 275 require_cxx_flag_nomsvc("-std=c++11" YES) 276 add_compiler_flag_if_supported("-Wall") 277 add_compiler_flag_if_supported("-Wdisabled-optimization") 278 add_compiler_flag_if_supported("-Wextra") 279 add_compiler_flag_if_supported("-Wfloat-conversion") 280 add_compiler_flag_if_supported("-Wimplicit-function-declaration") 281 add_compiler_flag_if_supported("-Wlogical-op") 282 add_compiler_flag_if_supported("-Wpointer-arith") 283 add_compiler_flag_if_supported("-Wshorten-64-to-32") 284 add_compiler_flag_if_supported("-Wsign-compare") 285 add_compiler_flag_if_supported("-Wstring-conversion") 286 add_compiler_flag_if_supported("-Wtype-limits") 287 add_compiler_flag_if_supported("-Wuninitialized") 288 add_compiler_flag_if_supported("-Wunused") 289 add_compiler_flag_if_supported("-Wvla") 290 291 if(CMAKE_C_COMPILER_ID MATCHES "GNU" 292 AND "${SANITIZE}" MATCHES "address|undefined") 293 294 # This combination has more stack overhead, so we account for it by 295 # providing higher stack limit than usual. 296 add_c_flag_if_supported("-Wstack-usage=170000") 297 add_cxx_flag_if_supported("-Wstack-usage=270000") 298 elseif(CONFIG_RD_DEBUG) # Another case where higher stack usage is expected. 299 add_c_flag_if_supported("-Wstack-usage=117000") 300 add_cxx_flag_if_supported("-Wstack-usage=240000") 301 else() 302 add_c_flag_if_supported("-Wstack-usage=100000") 303 add_cxx_flag_if_supported("-Wstack-usage=240000") 304 endif() 305 306 # Add -Wshadow only for C files to avoid massive gtest warning spam. 307 add_c_flag_if_supported("-Wshadow") 308 309 # Add -Wundef only for C files to avoid massive gtest warning spam. 310 add_c_flag_if_supported("-Wundef") 311 312 # Quiet gcc 6 vs 7 abi warnings: 313 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 314 if("${AOM_TARGET_CPU}" MATCHES "arm") 315 add_cxx_flag_if_supported("-Wno-psabi") 316 endif() 317 318 if(ENABLE_WERROR) 319 add_compiler_flag_if_supported("-Werror") 320 endif() 321 322 if("${CMAKE_BUILD_TYPE}" MATCHES "Rel") 323 add_compiler_flag_if_supported("-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0") 324 endif() 325 add_compiler_flag_if_supported("-D_LARGEFILE_SOURCE") 326 add_compiler_flag_if_supported("-D_FILE_OFFSET_BITS=64") 327endif() 328 329set(AOM_LIB_LINK_TYPE PUBLIC) 330if(EMSCRIPTEN) 331 332 # Avoid CMake generation time errors resulting from collisions with the form 333 # of target_link_libraries() used by Emscripten.cmake. 334 unset(AOM_LIB_LINK_TYPE) 335endif() 336 337# Generate aom_config templates. 338set(aom_config_asm_template "${AOM_CONFIG_DIR}/config/aom_config.asm.cmake") 339set(aom_config_h_template "${AOM_CONFIG_DIR}/config/aom_config.h.cmake") 340execute_process( 341 COMMAND ${CMAKE_COMMAND} 342 -DAOM_CONFIG_DIR=${AOM_CONFIG_DIR} -DAOM_ROOT=${AOM_ROOT} -P 343 "${AOM_ROOT}/build/cmake/generate_aom_config_templates.cmake") 344 345# Generate aom_config.{asm,h}. 346configure_file("${aom_config_asm_template}" 347 "${AOM_CONFIG_DIR}/config/aom_config.asm") 348configure_file("${aom_config_h_template}" 349 "${AOM_CONFIG_DIR}/config/aom_config.h") 350 351# Read the current git hash. 352find_package(Git) 353if(NOT GIT_FOUND) 354 message("--- Git missing, version will be read from CHANGELOG.") 355endif() 356 357configure_file("${AOM_ROOT}/build/cmake/aom_config.c.template" 358 "${AOM_CONFIG_DIR}/config/aom_config.c") 359 360# Find Perl and generate the RTCD sources. 361find_package(Perl) 362if(NOT PERL_FOUND) 363 message(FATAL_ERROR "Perl is required to build libaom.") 364endif() 365 366set(AOM_RTCD_CONFIG_FILE_LIST "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd_defs.pl" 367 "${AOM_ROOT}/aom_scale/aom_scale_rtcd.pl" 368 "${AOM_ROOT}/av1/common/av1_rtcd_defs.pl") 369set(AOM_RTCD_HEADER_FILE_LIST "${AOM_CONFIG_DIR}/config/aom_dsp_rtcd.h" 370 "${AOM_CONFIG_DIR}/config/aom_scale_rtcd.h" 371 "${AOM_CONFIG_DIR}/config/av1_rtcd.h") 372set(AOM_RTCD_SOURCE_FILE_LIST "${AOM_ROOT}/aom_dsp/aom_dsp_rtcd.c" 373 "${AOM_ROOT}/aom_scale/aom_scale_rtcd.c" 374 "${AOM_ROOT}/av1/common/av1_rtcd.c") 375set(AOM_RTCD_SYMBOL_LIST aom_dsp_rtcd aom_scale_rtcd av1_rtcd) 376list(LENGTH AOM_RTCD_SYMBOL_LIST AOM_RTCD_CUSTOM_COMMAND_COUNT) 377math(EXPR AOM_RTCD_CUSTOM_COMMAND_COUNT "${AOM_RTCD_CUSTOM_COMMAND_COUNT} - 1") 378 379foreach(NUM RANGE ${AOM_RTCD_CUSTOM_COMMAND_COUNT}) 380 list(GET AOM_RTCD_CONFIG_FILE_LIST ${NUM} AOM_RTCD_CONFIG_FILE) 381 list(GET AOM_RTCD_HEADER_FILE_LIST ${NUM} AOM_RTCD_HEADER_FILE) 382 list(GET AOM_RTCD_SOURCE_FILE_LIST ${NUM} AOM_RTCD_SOURCE_FILE) 383 list(GET AOM_RTCD_SYMBOL_LIST ${NUM} AOM_RTCD_SYMBOL) 384 execute_process( 385 COMMAND 386 ${PERL_EXECUTABLE} "${AOM_ROOT}/build/cmake/rtcd.pl" 387 --arch=${AOM_TARGET_CPU} 388 --sym=${AOM_RTCD_SYMBOL} ${AOM_RTCD_FLAGS} 389 --config=${AOM_CONFIG_DIR}/config/aom_config.h ${AOM_RTCD_CONFIG_FILE} 390 OUTPUT_FILE ${AOM_RTCD_HEADER_FILE}) 391endforeach() 392 393# Generate aom_version.h. 394execute_process(COMMAND ${CMAKE_COMMAND} 395 -DAOM_CONFIG_DIR=${AOM_CONFIG_DIR} 396 -DAOM_ROOT=${AOM_ROOT} 397 -DGIT_EXECUTABLE=${GIT_EXECUTABLE} 398 -DPERL_EXECUTABLE=${PERL_EXECUTABLE} -P 399 "${AOM_ROOT}/build/cmake/version.cmake") 400