diff options
Diffstat (limited to 'third_party/aom/build/cmake/aom_optimization.cmake')
| -rw-r--r-- | third_party/aom/build/cmake/aom_optimization.cmake | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/third_party/aom/build/cmake/aom_optimization.cmake b/third_party/aom/build/cmake/aom_optimization.cmake new file mode 100644 index 000000000..be32a3212 --- /dev/null +++ b/third_party/aom/build/cmake/aom_optimization.cmake @@ -0,0 +1,212 @@ +# +# Copyright (c) 2017, Alliance for Open Media. All rights reserved +# +# This source code is subject to the terms of the BSD 2 Clause License and the +# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was +# not distributed with this source code in the LICENSE file, you can obtain it +# at www.aomedia.org/license/software. If the Alliance for Open Media Patent +# License 1.0 was not distributed with this source code in the PATENTS file, you +# can obtain it at www.aomedia.org/license/patent. +# +if(AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_) + return() +endif() # AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_ +set(AOM_BUILD_CMAKE_AOM_OPTIMIZATION_CMAKE_ 1) + +include("${AOM_ROOT}/build/cmake/util.cmake") + +# Translate $flag to one which MSVC understands, and write the new flag to the +# variable named by $translated_flag (or unset it, when MSVC needs no flag). +function(get_msvc_intrinsic_flag flag translated_flag) + if("${flag}" STREQUAL "-mavx") + set(${translated_flag} "/arch:AVX" PARENT_SCOPE) + elseif("${flag}" STREQUAL "-mavx2") + set(${translated_flag} "/arch:AVX2" PARENT_SCOPE) + else() + + # MSVC does not need flags for intrinsics flavors other than AVX/AVX2. + unset(${translated_flag} PARENT_SCOPE) + endif() +endfunction() + +# Adds an object library target. Terminates generation if $flag is not supported +# by the current compiler. $flag is the intrinsics flag required by the current +# compiler, and is added to the compile flags for all sources in $sources. +# $opt_name is used to name the target. $target_to_update is made dependent upon +# the created target. +# +# Note: the libaom target is always updated because OBJECT libraries have rules +# that disallow the direct addition of .o files to them as dependencies. Static +# libraries do not have this limitation. +function(add_intrinsics_object_library flag opt_name target_to_update sources + dependent_target) + if("${${sources}}" STREQUAL "") + return() + endif() + set(target_name ${target_to_update}_${opt_name}_intrinsics) + add_library(${target_name} OBJECT ${${sources}}) + + if(MSVC) + get_msvc_intrinsic_flag(${flag} "flag") + endif() + + if(flag) + separate_arguments(flag) + target_compile_options(${target_name} PUBLIC ${flag}) + endif() + + target_sources(${dependent_target} PRIVATE $<TARGET_OBJECTS:${target_name}>) + + # Add the new lib target to the global list of aom library targets. + list(APPEND AOM_LIB_TARGETS ${target_name}) + set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} PARENT_SCOPE) +endfunction() + +# Adds sources in list named by $sources to $target and adds $flag to the +# compile flags for each source file. +function(add_intrinsics_source_to_target flag target sources) + target_sources(${target} PRIVATE ${${sources}}) + if(MSVC) + get_msvc_intrinsic_flag(${flag} "flag") + endif() + if(flag) + foreach(source ${${sources}}) + set_property(SOURCE ${source} APPEND PROPERTY COMPILE_FLAGS ${flag}) + endforeach() + endif() +endfunction() + +# Writes object format for the current target to the var named by $out_format, +# or terminates the build when the object format for the current target is +# unknown. +function(get_asm_obj_format out_format) + if("${AOM_TARGET_CPU}" STREQUAL "x86_64") + if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin") + set(objformat "macho64") + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux") + set(objformat "elf64") + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "MSYS" OR "${AOM_TARGET_SYSTEM}" + STREQUAL "Windows") + set(objformat "win64") + else() + message(FATAL_ERROR "Unknown obj format: ${AOM_TARGET_SYSTEM}") + endif() + elseif("${AOM_TARGET_CPU}" STREQUAL "x86") + if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin") + set(objformat "macho32") + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux") + set(objformat "elf32") + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "MSYS" OR "${AOM_TARGET_SYSTEM}" + STREQUAL "Windows") + set(objformat "win32") + else() + message(FATAL_ERROR "Unknown obj format: ${AOM_TARGET_SYSTEM}") + endif() + else() + message(FATAL_ERROR + "Unknown obj format: ${AOM_TARGET_CPU}-${AOM_TARGET_SYSTEM}") + endif() + + set(${out_format} ${objformat} PARENT_SCOPE) +endfunction() + +# Adds library target named $lib_name for ASM files in variable named by +# $asm_sources. Builds an output directory path from $lib_name. Links $lib_name +# into $dependent_target. Generates a dummy C file with a dummy function to +# ensure that all cmake generators can determine the linker language, and that +# build tools don't complain that an object exposes no symbols. +function(add_asm_library lib_name asm_sources dependent_target) + if("${${asm_sources}}" STREQUAL "") + return() + endif() + set(asm_lib_obj_dir "${AOM_CONFIG_DIR}/asm_objects/${lib_name}") + if(NOT EXISTS "${asm_lib_obj_dir}") + file(MAKE_DIRECTORY "${asm_lib_obj_dir}") + endif() + + # TODO(tomfinegan): If cmake ever allows addition of .o files to OBJECT lib + # targets, make this OBJECT instead of STATIC to hide the target from + # consumers of the AOM cmake build. + add_library(${lib_name} STATIC ${${asm_sources}}) + + foreach(asm_source ${${asm_sources}}) + get_filename_component(asm_source_name "${asm_source}" NAME) + set(asm_object "${asm_lib_obj_dir}/${asm_source_name}.o") + add_custom_command(OUTPUT "${asm_object}" + COMMAND ${AS_EXECUTABLE} ARGS ${AOM_AS_FLAGS} + -I${AOM_ROOT}/ -I${AOM_CONFIG_DIR}/ -o + "${asm_object}" "${asm_source}" + DEPENDS "${asm_source}" + COMMENT "Building ASM object ${asm_object}" + WORKING_DIRECTORY "${AOM_CONFIG_DIR}" VERBATIM) + target_sources(aom PRIVATE "${asm_object}") + endforeach() + + # The above created a target containing only ASM sources. Cmake needs help + # here to determine the linker language. Add a dummy C file to force the + # linker language to C. We don't bother with setting the LINKER_LANGUAGE + # property on the library target because not all generators obey it (looking + # at you, xcode generator). + add_dummy_source_file_to_target("${lib_name}" "c") + + # Add the new lib target to the global list of aom library targets. + list(APPEND AOM_LIB_TARGETS ${lib_name}) + set(AOM_LIB_TARGETS ${AOM_LIB_TARGETS} PARENT_SCOPE) +endfunction() + +# Terminates generation if nasm found in PATH does not meet requirements. +# Currently checks only for presence of required object formats and support for +# the -Ox argument (multipass optimization). +function(test_nasm) + execute_process(COMMAND ${AS_EXECUTABLE} -hf OUTPUT_VARIABLE nasm_helptext) + + if(NOT "${nasm_helptext}" MATCHES "-Ox") + message(FATAL_ERROR + "Unsupported nasm: multipass optimization not supported.") + endif() + + if("${AOM_TARGET_CPU}" STREQUAL "x86") + if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin") + if(NOT "${nasm_helptext}" MATCHES "macho32") + message(FATAL_ERROR + "Unsupported nasm: macho32 object format not supported.") + endif() + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux") + if(NOT "${nasm_helptext}" MATCHES "elf32") + message(FATAL_ERROR + "Unsupported nasm: elf32 object format not supported.") + endif() + endif() + else() + if("${AOM_TARGET_SYSTEM}" STREQUAL "Darwin") + if(NOT "${nasm_helptext}" MATCHES "macho64") + message(FATAL_ERROR + "Unsupported nasm: macho64 object format not supported.") + endif() + elseif("${AOM_TARGET_SYSTEM}" STREQUAL "Linux") + if(NOT "${nasm_helptext}" MATCHES "elf64") + message(FATAL_ERROR + "Unsupported nasm: elf64 object format not supported.") + endif() + endif() + endif() +endfunction() + +# Adds build command for generation of rtcd C source files using +# build/cmake/rtcd.pl. $config is the input perl file, $output is the output C +# include file, $source is the C source file, and $symbol is used for the symbol +# argument passed to rtcd.pl. +function(add_rtcd_build_step config output source symbol) + add_custom_command(OUTPUT ${output} + COMMAND ${PERL_EXECUTABLE} ARGS + "${AOM_ROOT}/build/cmake/rtcd.pl" + --arch=${AOM_TARGET_CPU} + --sym=${symbol} ${AOM_RTCD_FLAGS} + --config=${AOM_CONFIG_DIR}/config/aom_config.h + ${config} > ${output} + DEPENDS ${config} + COMMENT "Generating ${output}" + WORKING_DIRECTORY ${AOM_CONFIG_DIR} VERBATIM) + set_property(SOURCE ${source} PROPERTY OBJECT_DEPENDS ${output}) + set_property(SOURCE ${output} PROPERTY GENERATED) +endfunction() |