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| 1 | +# CMake find_package() module for level-zero |
| 2 | +# |
| 3 | +# Example usage: |
| 4 | +# |
| 5 | +# find_package(LevelZero) |
| 6 | +# |
| 7 | +# If successful, the following variables will be defined: |
| 8 | +# LevelZero_FOUND |
| 9 | +# LevelZero_INCLUDE_DIRS |
| 10 | +# LevelZero_LIBRARY |
| 11 | +# LevelZero_LIBRARIES_DIR |
| 12 | +# |
| 13 | +# By default, the module searches the standard paths to locate the "ze_api.h" |
| 14 | +# and the ze_loader shared library. When using a custom level-zero installation, |
| 15 | +# the environment variable "LEVEL_ZERO_DIR" should be specified telling the |
| 16 | +# module to get the level-zero library and headers from that location. |
| 17 | + |
| 18 | +include(FindPackageHandleStandardArgs) |
| 19 | + |
| 20 | +# Search path priority |
| 21 | +# 1. CMake Variable LEVEL_ZERO_DIR |
| 22 | +# 2. Environment Variable LEVEL_ZERO_DIR |
| 23 | + |
| 24 | +if(NOT LEVEL_ZERO_DIR) |
| 25 | + if(DEFINED ENV{LEVEL_ZERO_DIR}) |
| 26 | + set(LEVEL_ZERO_DIR "$ENV{LEVEL_ZERO_DIR}") |
| 27 | + endif() |
| 28 | +endif() |
| 29 | + |
| 30 | +if(LEVEL_ZERO_DIR) |
| 31 | + find_path(LevelZero_INCLUDE_DIR |
| 32 | + NAMES level_zero/ze_api.h |
| 33 | + PATHS ${LEVEL_ZERO_DIR}/include |
| 34 | + NO_DEFAULT_PATH |
| 35 | + ) |
| 36 | + |
| 37 | + if(LINUX) |
| 38 | + find_library(LevelZero_LIBRARY |
| 39 | + NAMES ze_loader |
| 40 | + PATHS ${LEVEL_ZERO_DIR}/lib |
| 41 | + ${LEVEL_ZERO_DIR}/lib/x86_64-linux-gnu |
| 42 | + NO_DEFAULT_PATH |
| 43 | + ) |
| 44 | + else() |
| 45 | + find_library(LevelZero_LIBRARY |
| 46 | + NAMES ze_loader |
| 47 | + PATHS ${LEVEL_ZERO_DIR}/lib |
| 48 | + NO_DEFAULT_PATH |
| 49 | + ) |
| 50 | + endif() |
| 51 | +else() |
| 52 | + find_path(LevelZero_INCLUDE_DIR |
| 53 | + NAMES level_zero/ze_api.h |
| 54 | + ) |
| 55 | + |
| 56 | + find_library(LevelZero_LIBRARY |
| 57 | + NAMES ze_loader |
| 58 | + ) |
| 59 | +endif() |
| 60 | + |
| 61 | +# Compares the two version string that are supposed to be in x.y.z format |
| 62 | +# and reports if the argument VERSION_STR1 is greater than or equal than |
| 63 | +# version_str2. The strings are compared lexicographically after conversion to |
| 64 | +# lists of equal lengths, with the shorter string getting zero-padded. |
| 65 | +function(compare_versions VERSION_STR1 VERSION_STR2 OUTPUT) |
| 66 | + # Convert the strings to list |
| 67 | + string(REPLACE "." ";" VL1 ${VERSION_STR1}) |
| 68 | + string(REPLACE "." ";" VL2 ${VERSION_STR2}) |
| 69 | + # get lengths of both lists |
| 70 | + list(LENGTH VL1 VL1_LEN) |
| 71 | + list(LENGTH VL2 VL2_LEN) |
| 72 | + set(LEN ${VL1_LEN}) |
| 73 | + # If they differ in size pad the shorter list with 0s |
| 74 | + if(VL1_LEN GREATER VL2_LEN) |
| 75 | + math(EXPR DIFF "${VL1_LEN} - ${VL2_LEN}" OUTPUT_FORMAT DECIMAL) |
| 76 | + foreach(IDX RANGE 1 ${DIFF} 1) |
| 77 | + list(APPEND VL2 "0") |
| 78 | + endforeach() |
| 79 | + elseif(VL2_LEN GREATER VL2_LEN) |
| 80 | + math(EXPR DIFF "${VL1_LEN} - ${VL2_LEN}" OUTPUT_FORMAT DECIMAL) |
| 81 | + foreach(IDX RANGE 1 ${DIFF} 1) |
| 82 | + list(APPEND VL2 "0") |
| 83 | + endforeach() |
| 84 | + set(LEN ${VL2_LEN}) |
| 85 | + endif() |
| 86 | + math(EXPR LEN_SUB_ONE "${LEN}-1") |
| 87 | + foreach(IDX RANGE 0 ${LEN_SUB_ONE} 1) |
| 88 | + list(GET VL1 ${IDX} VAL1) |
| 89 | + list(GET VL2 ${IDX} VAL2) |
| 90 | + |
| 91 | + if(${VAL1} GREATER ${VAL2}) |
| 92 | + set(${OUTPUT} TRUE PARENT_SCOPE) |
| 93 | + break() |
| 94 | + elseif(${VAL1} LESS ${VAL2}) |
| 95 | + set(${OUTPUT} FALSE PARENT_SCOPE) |
| 96 | + break() |
| 97 | + else() |
| 98 | + set(${OUTPUT} TRUE PARENT_SCOPE) |
| 99 | + endif() |
| 100 | + endforeach() |
| 101 | + |
| 102 | + endfunction(compare_versions) |
| 103 | + |
| 104 | +# Creates a small function to run and extract the LevelZero loader version. |
| 105 | +function(get_l0_loader_version) |
| 106 | + |
| 107 | + set(L0_VERSIONEER_SRC |
| 108 | + [====[ |
| 109 | + #include <iostream> |
| 110 | + #include <level_zero/loader/ze_loader.h> |
| 111 | + #include <string> |
| 112 | + int main() { |
| 113 | + ze_result_t result; |
| 114 | + std::string loader("loader"); |
| 115 | + zel_component_version_t *versions; |
| 116 | + size_t size = 0; |
| 117 | + result = zeInit(0); |
| 118 | + if (result != ZE_RESULT_SUCCESS) { |
| 119 | + std::cerr << "Failed to init ze driver" << std::endl; |
| 120 | + return -1; |
| 121 | + } |
| 122 | + zelLoaderGetVersions(&size, nullptr); |
| 123 | + versions = new zel_component_version_t[size]; |
| 124 | + zelLoaderGetVersions(&size, versions); |
| 125 | + for (size_t i = 0; i < size; i++) { |
| 126 | + if (loader.compare(versions[i].component_name) == 0) { |
| 127 | + std::cout << versions[i].component_lib_version.major << "." |
| 128 | + << versions[i].component_lib_version.minor << "." |
| 129 | + << versions[i].component_lib_version.patch; |
| 130 | + break; |
| 131 | + } |
| 132 | + } |
| 133 | + delete[] versions; |
| 134 | + return 0; |
| 135 | + } |
| 136 | + ]====] |
| 137 | + ) |
| 138 | + |
| 139 | + set(L0_VERSIONEER_FILE ${CMAKE_BINARY_DIR}/temp/l0_versioneer.cpp) |
| 140 | + |
| 141 | + file(WRITE ${L0_VERSIONEER_FILE} "${L0_VERSIONEER_SRC}") |
| 142 | + |
| 143 | + # We need both the directories in the include path as ze_loader.h |
| 144 | + # includes "ze_api.h" and not "level_zero/ze_api.h". |
| 145 | + list(APPEND INCLUDE_DIRS ${LevelZero_INCLUDE_DIR}) |
| 146 | + list(APPEND INCLUDE_DIRS ${LevelZero_INCLUDE_DIR}/level_zero) |
| 147 | + list(JOIN INCLUDE_DIRS ";" INCLUDE_DIRS_STR) |
| 148 | + try_run(L0_VERSIONEER_RUN L0_VERSIONEER_COMPILE |
| 149 | + "${CMAKE_BINARY_DIR}" |
| 150 | + "${L0_VERSIONEER_FILE}" |
| 151 | + LINK_LIBRARIES ${LevelZero_LIBRARY} |
| 152 | + CMAKE_FLAGS |
| 153 | + "-DINCLUDE_DIRECTORIES=${INCLUDE_DIRS_STR}" |
| 154 | + RUN_OUTPUT_VARIABLE L0_VERSION |
| 155 | + ) |
| 156 | + if(${L0_VERSIONEER_COMPILE} AND (DEFINED L0_VERSIONEER_RUN)) |
| 157 | + set(LevelZero_VERSION ${L0_VERSION} PARENT_SCOPE) |
| 158 | + message(STATUS "Found Level Zero of version: ${L0_VERSION}") |
| 159 | + else() |
| 160 | + message(FATAL_ERROR |
| 161 | + "Could not compile a level-zero program to extract loader version" |
| 162 | + ) |
| 163 | + endif() |
| 164 | +endfunction(get_l0_loader_version) |
| 165 | + |
| 166 | +if(LevelZero_INCLUDE_DIR AND LevelZero_LIBRARY) |
| 167 | + list(APPEND LevelZero_LIBRARIES "${LevelZero_LIBRARY}") |
| 168 | + list(APPEND LevelZero_INCLUDE_DIRS ${LevelZero_INCLUDE_DIR}) |
| 169 | + if(OpenCL_FOUND) |
| 170 | + list(APPEND LevelZero_INCLUDE_DIRS ${OpenCL_INCLUDE_DIRS}) |
| 171 | + endif() |
| 172 | + |
| 173 | + cmake_path(GET LevelZero_LIBRARY PARENT_PATH LevelZero_LIBRARIES_PATH) |
| 174 | + set(LevelZero_LIBRARIES_DIR ${LevelZero_LIBRARIES_PATH}) |
| 175 | + |
| 176 | + if(NOT TARGET LevelZero::LevelZero) |
| 177 | + add_library(LevelZero::LevelZero INTERFACE IMPORTED) |
| 178 | + set_target_properties(LevelZero::LevelZero |
| 179 | + PROPERTIES INTERFACE_LINK_LIBRARIES "${LevelZero_LIBRARIES}" |
| 180 | + ) |
| 181 | + set_target_properties(LevelZero::LevelZero |
| 182 | + PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${LevelZero_INCLUDE_DIRS}" |
| 183 | + ) |
| 184 | + endif() |
| 185 | +endif() |
| 186 | + |
| 187 | +# Check if a specific version of Level Zero is required |
| 188 | +if(LevelZero_FIND_VERSION) |
| 189 | + get_l0_loader_version() |
| 190 | + set(VERSION_GT_FIND_VERSION FALSE) |
| 191 | + compare_versions( |
| 192 | + ${LevelZero_VERSION} |
| 193 | + ${LevelZero_FIND_VERSION} |
| 194 | + VERSION_GT_FIND_VERSION |
| 195 | + ) |
| 196 | + if(${VERSION_GT_FIND_VERSION}) |
| 197 | + set(LevelZero_FOUND TRUE) |
| 198 | + else() |
| 199 | + set(LevelZero_FOUND FALSE) |
| 200 | + endif() |
| 201 | +else() |
| 202 | + set(LevelZero_FOUND TRUE) |
| 203 | +endif() |
| 204 | + |
| 205 | +find_package_handle_standard_args(LevelZero |
| 206 | + REQUIRED_VARS |
| 207 | + LevelZero_FOUND |
| 208 | + LevelZero_INCLUDE_DIRS |
| 209 | + LevelZero_LIBRARY |
| 210 | + LevelZero_LIBRARIES_DIR |
| 211 | + HANDLE_COMPONENTS |
| 212 | +) |
| 213 | +mark_as_advanced(LevelZero_LIBRARY LevelZero_INCLUDE_DIRS) |
| 214 | + |
| 215 | +if(LevelZero_FOUND) |
| 216 | + find_package_message(LevelZero "Found LevelZero: ${LevelZero_LIBRARY}" |
| 217 | + "(found version ${LevelZero_VERSION})" |
| 218 | + ) |
| 219 | +else() |
| 220 | + find_package_message(LevelZero "Could not find LevelZero" "") |
| 221 | +endif() |
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