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Update Level Zero loader detection for newer compiler builds #2025

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Merged
merged 3 commits into from
Mar 31, 2025
Merged

Update Level Zero loader detection for newer compiler builds #2025

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2b5f45d
Fix Level Zero Loader detection when statically linked
ndgrigorian Mar 18, 2025
8d41b83
Add LIBZE_SET_LOADER_FILENAME CMake variable
ndgrigorian Mar 19, 2025
3117a94
Remove redundant setting of LIBZE_LOADER_FILENAME in parent scope
ndgrigorian Mar 29, 2025
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41 changes: 26 additions & 15 deletions libsyclinterface/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,10 @@ option(DPCTL_ENABLE_GLOG

set(DPCTL_LEVEL_ZERO_INCLUDE_DIR "" CACHE STRING "Level zero header path")

set(LIBZE_SET_LOADER_FILENAME "" CACHE STRING "User-provided Level Zero Loader filename")

set(LIBZE_DEFAULT_LOADER_FILENAME "libze_loader.so.1" CACHE STRING "Default Level Zero Loader filename")

# Minimum version requirement only when oneAPI dpcpp is used.
if(DPCTL_DPCPP_FROM_ONEAPI)
find_package(IntelSyclCompiler 2021.3.0 REQUIRED)
Expand All @@ -60,21 +64,28 @@ if(DPCTL_ENABLE_L0_PROGRAM_CREATION)
get_level_zero_headers()
endif()
if (UNIX)
find_library(PI_LEVEL_ZERO_LIB
NAMES pi_level_zero ur_adapter_level_zero
HINTS ${IntelSyclCompiler_LIBRARY_DIR}
)
find_program(READELF_PROG readelf)
find_program(GREP_PROG grep)
execute_process(
COMMAND ${READELF_PROG} -d ${PI_LEVEL_ZERO_LIB}
COMMAND ${GREP_PROG} libze_loader
COMMAND ${GREP_PROG} -Po "libze_loader[^\]]*"
OUTPUT_VARIABLE LIBZE_LOADER_FILENAME
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
set(LIBZE_LOADER_FILENAME ${LIBZE_LOADER_FILENAME} PARENT_SCOPE)
if ("x${LIBZE_SET_LOADER_FILENAME}" STREQUAL "x")
find_library(PI_LEVEL_ZERO_LIB
NAMES pi_level_zero ur_adapter_level_zero
HINTS ${IntelSyclCompiler_LIBRARY_DIR}
)
find_program(READELF_PROG readelf)
find_program(GREP_PROG grep)
execute_process(
COMMAND ${READELF_PROG} -d ${PI_LEVEL_ZERO_LIB}
COMMAND ${GREP_PROG} libze_loader
COMMAND ${GREP_PROG} -Po "libze_loader[^\]]*"
OUTPUT_VARIABLE LIBZE_LOADER_FILENAME
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
)
# if libze_loader is statically linked, LIBZE_LOADER_FILENAME will be an empty string
if ("x${LIBZE_LOADER_FILENAME}" STREQUAL "x")
set(LIBZE_LOADER_FILENAME ${LIBZE_DEFAULT_LOADER_FILENAME})
endif()
else ()
set(LIBZE_LOADER_FILENAME ${LIBZE_SET_LOADER_FILENAME})
endif()
endif()
set(LIBZE_LOADER_FILENAME ${LIBZE_LOADER_FILENAME} PARENT_SCOPE)
endif()
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