1 # Copyright (c) 2018 Cisco and/or its affiliates.
2 # Licensed under the Apache License, Version 2.0 (the "License");
3 # you may not use this file except in compliance with the License.
4 # You may obtain a copy of the License at:
6 # http://www.apache.org/licenses/LICENSE-2.0
8 # Unless required by applicable law or agreed to in writing, software
9 # distributed under the License is distributed on an "AS IS" BASIS,
10 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 # See the License for the specific language governing permissions and
12 # limitations under the License.
14 ##############################################################################
15 # Cache line size detection
16 ##############################################################################
17 if(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
18 file(READ "/proc/cpuinfo" cpuinfo)
19 string(REPLACE "\n" ";" cpuinfo ${cpuinfo})
21 string(REPLACE ":" ";" l ${l})
24 string(STRIP ${name} name)
25 string(STRIP ${value} value)
26 if(${name} STREQUAL "CPU implementer")
27 set(CPU_IMPLEMENTER ${value})
29 if(${name} STREQUAL "CPU part")
30 set(CPU_PART ${value})
33 # Implementer 0x0a1 - Cavium
34 # Part 0x0a1 - ThunderX
35 if (${CPU_IMPLEMENTER} STREQUAL "0x43" AND ${CPU_PART} STREQUAL "0x0a1")
36 set(VPP_LOG2_CACHE_LINE_SIZE 7)
38 set(VPP_LOG2_CACHE_LINE_SIZE 6)
40 math(EXPR VPP_CACHE_LINE_SIZE "1 << ${VPP_LOG2_CACHE_LINE_SIZE}")
41 message(STATUS "ARM AArch64 CPU implementer ${CPU_IMPLEMENTER} part ${CPU_PART} cacheline size ${VPP_CACHE_LINE_SIZE}")
43 set(VPP_LOG2_CACHE_LINE_SIZE 6)
46 set(VPP_LOG2_CACHE_LINE_SIZE ${VPP_LOG2_CACHE_LINE_SIZE}
47 CACHE STRING "Target CPU cache line size (power of 2)")
49 ##############################################################################
50 # CPU optimizations and multiarch support
51 ##############################################################################
52 if(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
53 set(CMAKE_C_FLAGS "-march=corei7 -mtune=corei7-avx ${CMAKE_C_FLAGS}")
54 set(VPP_LIB_DIR_NAME lib64)
55 check_c_compiler_flag("-march=core-avx2" compiler_flag_march_core_avx2)
56 if(compiler_flag_march_core_avx2)
57 list(APPEND MARCH_VARIANTS "avx2\;-march=core-avx2 -mtune=core-avx2")
59 check_c_compiler_flag("-march=skylake-avx512" compiler_flag_march_skylake_avx512)
60 if(compiler_flag_march_skylake_avx512)
61 list(APPEND MARCH_VARIANTS "avx512\;-march=skylake-avx512 -mtune=skylake-avx512")
63 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
64 set(CMAKE_C_FLAGS "-march=armv8-a+crc ${CMAKE_C_FLAGS}")
65 set(VPP_LIB_DIR_NAME lib64)
67 set(VPP_LIB_DIR_NAME lib)
70 macro(vpp_library_set_multiarch_sources lib)
71 foreach(V ${MARCH_VARIANTS})
73 list(GET V 1 VARIANT_FLAGS)
74 set(l ${lib}_${VARIANT})
75 add_library(${l} OBJECT ${ARGN})
76 set_target_properties(${l} PROPERTIES POSITION_INDEPENDENT_CODE ON)
77 target_compile_options(${l} PUBLIC "-DCLIB_MARCH_VARIANT=${VARIANT}")
78 separate_arguments(VARIANT_FLAGS)
79 target_compile_options(${l} PUBLIC ${VARIANT_FLAGS})
80 target_sources(${lib} PRIVATE $<TARGET_OBJECTS:${l}>)