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Retrieve HWLOC API version from hwloc.h header #492

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merged 1 commit into from
May 15, 2024
Merged

Retrieve HWLOC API version from hwloc.h header #492

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53 changes: 27 additions & 26 deletions cmake/FindLIBHWLOC.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -14,28 +14,28 @@ find_file(LIBHWLOC_HEADER NAMES hwloc.h)
get_filename_component(LIBHWLOC_INCLUDE_DIR ${LIBHWLOC_HEADER} DIRECTORY)
set(LIBHWLOC_INCLUDE_DIRS ${LIBHWLOC_INCLUDE_DIR})

if(LIBHWLOC_INCLUDE_DIR)
if(EXISTS "${LIBHWLOC_INCLUDE_DIR}/hwloc/autogen/config.h")
file(
STRINGS "${LIBHWLOC_INCLUDE_DIR}/hwloc/autogen/config.h"
LIBHWLOC_VERSION
REGEX
"#define[ \t]HWLOC_VERSION[ \t]\"([0-9]+.[0-9]+.[0-9]+(rc[0-9])?)(-git)?\""
)
string(
REGEX
REPLACE
"#define[ \t]HWLOC_VERSION[ \t]\"([0-9]+.[0-9]+.[0-9]+(rc[0-9])?)(-git)?\""
"\\1"
LIBHWLOC_VERSION
"${LIBHWLOC_VERSION}")
else()
message(
WARNING
"LIBHWLOC_INCLUDE_DIR found, but header with version info is missing"
)
endif()
endif()
set(HWLOC_VERSION_CODE
"
#include <stdio.h>
#include <stdlib.h>
#include \"hwloc.h\"

void main(int argc, char** argv) {
unsigned LIBHWLOC_API_PATCH = HWLOC_API_VERSION & 0xFF;
unsigned LIBHWLOC_API_MINOR = (HWLOC_API_VERSION >> 8) & 0xFF;
unsigned LIBHWLOC_API_MAJOR = (HWLOC_API_VERSION >> 16) & 0xFF;
printf(\"%d.%d.%d\", LIBHWLOC_API_MAJOR, LIBHWLOC_API_MINOR, LIBHWLOC_API_PATCH);
}")

set(HWLOC_VERSION_CODE_FILENAME "hwloc_get_version.c")
file(WRITE "${CMAKE_BINARY_DIR}/${HWLOC_VERSION_CODE_FILENAME}"
"${HWLOC_VERSION_CODE}")

try_run(
HWLOC_RUN_RESULT HWLOC_COMPILE_RESULT ${CMAKE_BINARY_DIR}
"${CMAKE_BINARY_DIR}/${HWLOC_VERSION_CODE_FILENAME}"
CMAKE_FLAGS "-DINCLUDE_DIRECTORIES=${LIBHWLOC_INCLUDE_DIR}"
RUN_OUTPUT_VARIABLE LIBHWLOC_API_VERSION)

if(WINDOWS)
find_file(LIBHWLOC_DLL NAMES "bin/hwloc-15.dll" "bin/libhwloc-15.dll")
Expand All @@ -48,18 +48,19 @@ if(LIBHWLOC_LIBRARY)
message(STATUS " LIBHWLOC_LIBRARIES = ${LIBHWLOC_LIBRARIES}")
message(STATUS " LIBHWLOC_INCLUDE_DIRS = ${LIBHWLOC_INCLUDE_DIRS}")
message(STATUS " LIBHWLOC_LIBRARY_DIRS = ${LIBHWLOC_LIBRARY_DIRS}")
message(STATUS " LIBHWLOC_VERSION = ${LIBHWLOC_VERSION}")
message(STATUS " LIBHWLOC_API_VERSION = ${LIBHWLOC_API_VERSION}")
if(WINDOWS)
message(STATUS " LIBHWLOC_DLL_DIRS = ${LIBHWLOC_DLL_DIRS}")
endif()

if(LIBHWLOC_FIND_VERSION)
if(NOT LIBHWLOC_VERSION)
if(NOT LIBHWLOC_API_VERSION)
message(FATAL_ERROR "Failed to retrieve libhwloc version")
elseif(NOT LIBHWLOC_VERSION VERSION_GREATER_EQUAL LIBHWLOC_FIND_VERSION)
elseif(NOT LIBHWLOC_API_VERSION VERSION_GREATER_EQUAL
LIBHWLOC_FIND_VERSION)
message(
FATAL_ERROR
" Required version: ${LIBHWLOC_FIND_VERSION}, found ${LIBHWLOC_VERSION}"
" Required version: ${LIBHWLOC_FIND_VERSION}, found ${LIBHWLOC_API_VERSION}"
)
endif()
endif()
Expand Down