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# SPDX-License-Identifier: Apache-2.0
# ----------------------------------------------------------------------------
# Copyright 2020-2025 Arm Limited
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# ----------------------------------------------------------------------------
# Overwrite the LTO flags to force fat LTO; worth 3-4% performance
# See https://gitlab.kitware.com/cmake/cmake/-/issues/16808
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang" AND ${ASTCENC_CLI})
set(CMAKE_CXX_COMPILE_OPTIONS_IPO "-flto")
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND ${ASTCENC_CLI})
set(CMAKE_CXX_COMPILE_OPTIONS_IPO "-flto=auto")
endif()
if(${ASTCENC_DECOMPRESSOR})
set(ASTCENC_CODEC dec)
else()
set(ASTCENC_CODEC enc)
endif()
set(ASTCENC_ARTIFACTS native none sve_256 sve_128 neon avx2 sse4.1 sse2)
set(ASTCENC_CONFIGS ${ASTCENC_ISA_NATIVE} ${ASTCENC_ISA_NONE} ${ASTCENC_ISA_SVE_256} ${ASTCENC_ISA_SVE_128} ${ASTCENC_ISA_NEON} ${ASTCENC_ISA_AVX2} ${ASTCENC_ISA_SSE41} ${ASTCENC_ISA_SSE2})
list(LENGTH ASTCENC_ARTIFACTS ASTCENC_ARTIFACTS_LEN)
math(EXPR ASTCENC_ARTIFACTS_LEN "${ASTCENC_ARTIFACTS_LEN} - 1")
foreach(INDEX RANGE ${ASTCENC_ARTIFACTS_LEN})
list(GET ASTCENC_ARTIFACTS ${INDEX} ASTCENC_ARTIFACT)
list(GET ASTCENC_CONFIGS ${INDEX} ASTCENC_CONFIG)
if(${ASTCENC_CONFIG})
set(ASTCENC_ISA_SIMD ${ASTCENC_ARTIFACT})
if(${ASTCENC_ISA_SIMD} MATCHES "sve_256")
# Not suported on macOS
elseif(${ASTCENC_ISA_SIMD} MATCHES "sve_128")
# Not suported on macOS
elseif(${ASTCENC_ISA_SIMD} MATCHES "neon")
set(CMAKE_OSX_ARCHITECTURES arm64)
elseif(${ASTCENC_ISA_SIMD} MATCHES "sse2")
set(CMAKE_OSX_ARCHITECTURES x86_64)
elseif(${ASTCENC_ISA_SIMD} MATCHES "sse4.1")
set(CMAKE_OSX_ARCHITECTURES x86_64)
elseif(${ASTCENC_ISA_SIMD} MATCHES "avx2")
set(CMAKE_OSX_ARCHITECTURES x86_64h)
elseif(${ASTCENC_ISA_SIMD} MATCHES "none")
# Using "none" uses implicit architecture
elseif(${ASTCENC_ISA_SIMD} MATCHES "native")
# Using "native" uses implicit architecture
else()
message(FATAL_ERROR "'${ASTCENC_ISA_SIMD}' is unknown ISA")
endif()
include(cmake_core.cmake)
endif()
endforeach()
if(${ASTCENC_CLI} AND ${ASTCENC_UNIVERSAL_BUILD})
add_custom_target(
astc${ASTCENC_CODEC}
ALL
COMMAND
lipo -create -output $<TARGET_FILE_DIR:astc${ASTCENC_CODEC}-sse4.1>/astc${ASTCENC_CODEC} -arch x86_64 $<TARGET_FILE:astc${ASTCENC_CODEC}-sse4.1> -arch x86_64h $<TARGET_FILE:astc${ASTCENC_CODEC}-avx2> -arch arm64 $<TARGET_FILE:astc${ASTCENC_CODEC}-neon>
VERBATIM)
add_dependencies(
astc${ASTCENC_CODEC}
astc${ASTCENC_CODEC}-sse4.1
astc${ASTCENC_CODEC}-avx2
astc${ASTCENC_CODEC}-neon)
install(PROGRAMS $<TARGET_FILE_DIR:astc${ASTCENC_CODEC}-sse4.1>/astc${ASTCENC_CODEC}
DESTINATION bin)
endif()
if(${ASTCENC_SHAREDLIB} AND ${ASTCENC_UNIVERSAL_BUILD})
add_custom_target(
astc${ASTCENC_CODEC}-shared
ALL
COMMAND
lipo -create -output $<TARGET_FILE_DIR:astc${ASTCENC_CODEC}-sse4.1-shared>/libastc${ASTCENC_CODEC}-shared.dylib -arch x86_64 $<TARGET_FILE:astc${ASTCENC_CODEC}-sse4.1-shared> -arch x86_64h $<TARGET_FILE:astc${ASTCENC_CODEC}-avx2-shared> -arch arm64 $<TARGET_FILE:astc${ASTCENC_CODEC}-neon-shared>
VERBATIM)
add_dependencies(
astc${ASTCENC_CODEC}-shared
astc${ASTCENC_CODEC}-sse4.1-shared
astc${ASTCENC_CODEC}-avx2-shared
astc${ASTCENC_CODEC}-neon-shared)
install(PROGRAMS $<TARGET_FILE_DIR:astc${ASTCENC_CODEC}-sse4.1-shared>/libastc${ASTCENC_CODEC}-shared.dylib
DESTINATION lib)
endif()
# - - - - - - - - - - - - - - - - - -
# Unit testing
if(${ASTCENC_UNITTEST})
find_package(GTest REQUIRED)
add_library(gtest_main ALIAS GTest::gtest_main)
enable_testing()
add_subdirectory(UnitTest)
endif()
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