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############################################################################
# Copyright (c) Johan Mabille, Sylvain Corlay and Wolf Vollprecht #
# Copyright (c) QuantStack #
# #
# Distributed under the terms of the BSD 3-Clause License. #
# #
# The full license is in the file LICENSE, distributed with this software. #
############################################################################
cmake_minimum_required(VERSION 3.29)
# Otherwise adds std=gnu++17 on OSX ...
set(CMAKE_CXX_EXTENSIONS OFF)
project(xtensor-blas)
# Otherwise adds flags for C++11 standard on OSX ...
if(NOT CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 20)
endif()
message(STATUS "🔧 C++ standard: ${CMAKE_CXX_STANDARD}")
set(INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
set(XTENSOR_BLAS_INCLUDE_DIR ${INCLUDE_DIR})
# Configuration
# =============
# TODO: use the library directory of the found BLAS implementation instead of
# CMAKE_INSTALL_LIBDIR
set(XTENSOR_BLAS_CLING_LIBRARY_DIR_64 "\"${CMAKE_INSTALL_PREFIX}/lib64\"")
set(XTENSOR_BLAS_CLING_LIBRARY_DIR_32 "\"${CMAKE_INSTALL_PREFIX}/lib32\"")
set(XTENSOR_BLAS_CLING_LIBRARY_DIR "\"${CMAKE_INSTALL_PREFIX}/lib\"")
configure_file (
"${INCLUDE_DIR}/xtensor-blas/xblas_config_cling.hpp.in"
"${INCLUDE_DIR}/xtensor-blas/xblas_config_cling.hpp"
)
# Versionning
# ===========
file(STRINGS "${INCLUDE_DIR}/xtensor-blas/xblas_config.hpp" xtensor_blas_version_defines
REGEX "#define XTENSOR_BLAS_VERSION_(MAJOR|MINOR|PATCH)")
foreach(ver ${xtensor_blas_version_defines})
if(ver MATCHES "#define XTENSOR_BLAS_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$")
set(XTENSOR_BLAS_VERSION_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}" CACHE INTERNAL "")
endif()
endforeach()
set(${PROJECT_NAME}_VERSION
${XTENSOR_BLAS_VERSION_MAJOR}.${XTENSOR_BLAS_VERSION_MINOR}.${XTENSOR_BLAS_VERSION_PATCH})
message(STATUS "xtensor-blas v${${PROJECT_NAME}_VERSION}")
# Dependencies
# ============
set(xtensor_REQUIRED_VERSION 0.27.0)
if(TARGET xtensor)
set(xtensor_VERSION ${XTENSOR_VERSION_MAJOR}.${XTENSOR_VERSION_MINOR}.${XTENSOR_VERSION_PATCH})
# Note: This is not SEMVER compatible comparison
if( NOT ${xtensor_VERSION} VERSION_GREATER_EQUAL ${xtensor_REQUIRED_VERSION})
message(ERROR "Mismatch xtensor versions. Found '${xtensor_VERSION}' but requires: '${xtensor_REQUIRED_VERSION}'")
else()
message(STATUS "Found xtensor v${xtensor_VERSION}")
endif()
else()
find_package(xtensor ${xtensor_REQUIRED_VERSION} REQUIRED)
message(STATUS "Found xtensor: ${xtensor_INCLUDE_DIRS}/xtensor")
endif()
# Build
# =====
set(XTENSOR_BLAS_HEADERS
${INCLUDE_DIR}/xtensor-blas/xblas.hpp
${INCLUDE_DIR}/xtensor-blas/xblas_utils.hpp
${INCLUDE_DIR}/xtensor-blas/xblas_config.hpp
${INCLUDE_DIR}/xtensor-blas/xblas_config_cling.hpp
${INCLUDE_DIR}/xtensor-blas/xlapack.hpp
${INCLUDE_DIR}/xtensor-blas/xlinalg.hpp
)
add_library(xtensor-blas INTERFACE)
target_include_directories(xtensor-blas
INTERFACE
$<BUILD_INTERFACE:${XTENSOR_BLAS_INCLUDE_DIR}>
$<INSTALL_INTERFACE:include>)
target_compile_features(xtensor-blas INTERFACE cxx_std_20)
OPTION(CXXBLAS_DEBUG "print cxxblas debug information" OFF)
OPTION(XTENSOR_USE_FLENS_BLAS "use FLENS generic implementation instead of cblas" OFF)
# Decide whether to use OpenBLAS or not.
# The user might have the folder containing OpenBLASConfig.cmake file
# in the paths inspected by CMake already and just setting this to ON
# would be enough to detect OpenBLAS.
# If that is not the case, one can pass OpenBLAS_DIR without the boolean
# toggle.
OPTION(USE_OPENBLAS "use OpenBLAS (requires suitable OpenBLASConfig.cmake)" OFF)
if(OpenBLAS_DIR)
set(USE_OPENBLAS ON)
endif()
if(XTENSOR_USE_FLENS_BLAS)
add_definitions(-DXTENSOR_USE_FLENS_BLAS=1)
endif()
if (CXXBLAS_DEBUG)
add_definitions(-DCXXBLAS_DEBUG=1)
endif()
OPTION(BUILD_TESTS "xtensor-blas test suite" OFF)
OPTION(BUILD_BENCHMARK "xtensor-blas test suite" OFF)
OPTION(CPP23 "enables C++23 (experimental)" OFF)
if(BUILD_TESTS)
enable_testing()
include_directories(${XTENSOR_BLAS_INCLUDE_DIR})
include_directories(${xtensor_INCLUDE_DIRS})
add_subdirectory(test)
endif()
if(BUILD_BENCHMARKS)
include_directories(${XTENSOR_BLAS_INCLUDE_DIR})
include_directories(${xtensor_INCLUDE_DIRS})
add_subdirectory(benchmark)
endif()
# Installation
# ============
include(GNUInstallDirs)
include(CMakePackageConfigHelpers)
install(TARGETS xtensor-blas
EXPORT ${PROJECT_NAME}-targets)
# Makes the project importable from the build directory
export(EXPORT ${PROJECT_NAME}-targets
FILE "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Targets.cmake")
install(FILES ${XTENSOR_BLAS_HEADERS}
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/xtensor-blas)
install(DIRECTORY ${INCLUDE_DIR}/xflens
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
PATTERN *.tgz EXCLUDE
PATTERN Makefile EXCLUDE
PATTERN dummy.in.cc EXCLUDE
PATTERN filter.pm EXCLUDE
PATTERN CMakeLists.txt EXCLUDE)
configure_file(${PROJECT_NAME}.pc.in
"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
@ONLY)
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
DESTINATION "${CMAKE_INSTALL_DATADIR}/pkgconfig/")
set(XTENSOR_BLAS_CMAKECONFIG_INSTALL_DIR "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}" CACHE
STRING "install path for xtensor-blasConfig.cmake")
configure_package_config_file(${PROJECT_NAME}Config.cmake.in
"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
INSTALL_DESTINATION ${XTENSOR_BLAS_CMAKECONFIG_INSTALL_DIR})
# xtensor is header-only and does not depend on the architecture.
# Remove CMAKE_SIZEOF_VOID_P from xblasConfigVersion.cmake so that an xblasConfig.cmake
# generated for a 64 bit target can be used for 32 bit targets and vice versa.
set(_XTENSOR_BLAS_CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P})
unset(CMAKE_SIZEOF_VOID_P)
write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
VERSION ${${PROJECT_NAME}_VERSION}
COMPATIBILITY AnyNewerVersion)
set(CMAKE_SIZEOF_VOID_P ${_XTENSOR_CMAKE_SIZEOF_VOID_P})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
DESTINATION ${XTENSOR_BLAS_CMAKECONFIG_INSTALL_DIR})
install(EXPORT ${PROJECT_NAME}-targets
FILE ${PROJECT_NAME}Targets.cmake
DESTINATION ${XTENSOR_BLAS_CMAKECONFIG_INSTALL_DIR})
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