OpenBLAS/cmake/system.cmake

##
## Author: Hank Anderson <hank@statease.com>
## Description: Ported from OpenBLAS/Makefile.system
##
set(NETLIB_LAPACK_DIR "${PROJECT_SOURCE_DIR}/lapack-netlib")

# System detection, via CMake.
include("${PROJECT_SOURCE_DIR}/cmake/system_check.cmake")

if(CMAKE_CROSSCOMPILING AND NOT DEFINED TARGET)
  # Detect target without running getarch
  if (ARM64)
    set(TARGET "ARMV8")
  elseif(ARM)
    set(TARGET "ARMV7") # TODO: Ask compiler which arch this is
  else()
    message(FATAL_ERROR "When cross compiling, a TARGET is required.")
  endif()
endif()

# Other files expect CORE, which is actually TARGET and will become TARGET_CORE for kernel build. Confused yet?
# It seems we are meant to use TARGET as input and CORE internally as kernel.
if(NOT DEFINED CORE AND DEFINED TARGET)
  set(CORE ${TARGET})
endif()

# TARGET_CORE will override TARGET which is used in DYNAMIC_ARCH=1.
if (DEFINED TARGET_CORE)
  set(TARGET ${TARGET_CORE})
endif ()

# Force fallbacks for 32bit
if (DEFINED BINARY AND DEFINED TARGET AND BINARY EQUAL 32)
  message(STATUS "Compiling a ${BINARY}-bit binary.")
  set(NO_AVX 1)
  if (${TARGET} STREQUAL "HASWELL" OR ${TARGET} STREQUAL "SANDYBRIDGE" OR ${TARGET} STREQUAL "SKYLAKEX")
    set(TARGET "NEHALEM")
  endif ()
  if (${TARGET} STREQUAL "BULLDOZER" OR ${TARGET} STREQUAL "PILEDRIVER" OR ${TARGET} STREQUAL "ZEN")
    set(TARGET "BARCELONA")
  endif ()
  if (${TARGET} STREQUAL "ARMV8" OR ${TARGET} STREQUAL "CORTEXA57" OR ${TARGET} STREQUAL "CORTEXA53")
    set(TARGET "ARMV7")
  endif ()
endif ()

if (DEFINED TARGET)
  if (${TARGET} STREQUAL "SKYLAKEX" AND NOT NO_AVX512)
    set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -march=skylake-avx512")
  endif()
  if (${TARGET} STREQUAL "HASWELL" AND NOT NO_AVX2)
    if (${CMAKE_C_COMPILER_ID} STREQUAL "GNU")
      execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
      if (${GCC_VERSION} VERSION_GREATER 4.7 OR ${GCC_VERSION} VERSION_EQUAL 4.7)
        set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mavx2")
      endif()
    elseif (${CMAKE_C_COMPILER_ID} STREQUAL "CLANG")
      set (KERNEL_DEFINITIONS "${KERNEL_DEFINITIONS} -mavx2")
    endif()
  endif()
endif()

if (DEFINED TARGET)
  message(STATUS "Targeting the ${TARGET} architecture.")
  set(GETARCH_FLAGS "-DFORCE_${TARGET}")
endif ()

# On x86_64 build getarch with march=native. This is required to detect AVX512 support in getarch.
if (X86_64 AND NOT ${CMAKE_C_COMPILER_ID} STREQUAL "PGI")
  set(GETARCH_FLAGS "${GETARCH_FLAGS} -march=native")
endif ()

# On x86 no AVX support is available
if (X86 OR X86_64)
if ((DEFINED BINARY AND BINARY EQUAL 32) OR ("$CMAKE_SIZEOF_VOID_P}" EQUAL "4"))
  set(GETARCH_FLAGS "${GETARCH_FLAGS} -DNO_AVX -DNO_AVX2 -DNO_AVX512")
endif ()
endif ()

if (INTERFACE64)
  message(STATUS "Using 64-bit integers.")
  set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DUSE64BITINT")
endif ()

if (NOT DEFINED GEMM_MULTITHREAD_THRESHOLD)
  set(GEMM_MULTITHREAD_THRESHOLD 4)
endif ()
message(STATUS "GEMM multithread threshold set to ${GEMM_MULTITHREAD_THRESHOLD}.")
set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DGEMM_MULTITHREAD_THRESHOLD=${GEMM_MULTITHREAD_THRESHOLD}")

if (NO_AVX)
  message(STATUS "Disabling Advanced Vector Extensions (AVX).")
  set(GETARCH_FLAGS "${GETARCH_FLAGS} -DNO_AVX")
endif ()

if (NO_AVX2)
  message(STATUS "Disabling Advanced Vector Extensions 2 (AVX2).")
  set(GETARCH_FLAGS "${GETARCH_FLAGS} -DNO_AVX2")
endif ()

if (CMAKE_BUILD_TYPE STREQUAL "Debug")
  set(GETARCH_FLAGS "${GETARCH_FLAGS} ${CMAKE_C_FLAGS_DEBUG}")
endif ()

if (NOT DEFINED NO_PARALLEL_MAKE)
  set(NO_PARALLEL_MAKE 0)
endif ()
set(GETARCH_FLAGS	"${GETARCH_FLAGS} -DNO_PARALLEL_MAKE=${NO_PARALLEL_MAKE}")

if (CMAKE_C_COMPILER STREQUAL loongcc)
  set(GETARCH_FLAGS	"${GETARCH_FLAGS} -static")
endif ()

#if don't use Fortran, it will only compile CBLAS.
if (ONLY_CBLAS)
  set(NO_LAPACK 1)
else ()
  set(ONLY_CBLAS 0)
endif ()

# N.B. this is NUM_THREAD in Makefile.system which is probably a bug -hpa
if (NOT CMAKE_CROSSCOMPILING)
  if (NOT DEFINED NUM_CORES)
    include(ProcessorCount)
    ProcessorCount(NUM_CORES)
  endif()

endif()

if (NOT DEFINED NUM_PARALLEL)
  set(NUM_PARALLEL 1)
endif()

if (NOT DEFINED NUM_THREADS)
  if (DEFINED NUM_CORES AND NOT NUM_CORES EQUAL 0)
    # HT?
    set(NUM_THREADS ${NUM_CORES})
  else ()
    set(NUM_THREADS 0)
  endif ()
endif()

if (${NUM_THREADS} LESS 2)
  set(USE_THREAD 0)
elseif(NOT DEFINED USE_THREAD)
  set(USE_THREAD 1)
endif ()

if (USE_THREAD)
  message(STATUS "Multi-threading enabled with ${NUM_THREADS} threads.")
else()
  if (${USE_LOCKING})
    set(CCOMMON_OPT "${CCOMMON_OPT} -DUSE_LOCKING")
  endif ()
endif ()

include("${PROJECT_SOURCE_DIR}/cmake/prebuild.cmake")
if (DEFINED BINARY)
  message(STATUS "Compiling a ${BINARY}-bit binary.")
endif ()
if (NOT DEFINED NEED_PIC)
  set(NEED_PIC 1)
endif ()

# OS dependent settings
include("${PROJECT_SOURCE_DIR}/cmake/os.cmake")

# Architecture dependent settings
include("${PROJECT_SOURCE_DIR}/cmake/arch.cmake")

# C Compiler dependent settings
include("${PROJECT_SOURCE_DIR}/cmake/cc.cmake")

if (NOT NOFORTRAN)
  # Fortran Compiler dependent settings
  include("${PROJECT_SOURCE_DIR}/cmake/fc.cmake")
else ()
set(NO_LAPACK 1)
set(NO_LAPACKE 1)
endif ()

if (BINARY64)
  if (INTERFACE64)
    # CCOMMON_OPT += -DUSE64BITINT
  endif ()
endif ()

if (NEED_PIC)
  if (${CMAKE_C_COMPILER} STREQUAL "IBM")
    set(CCOMMON_OPT "${CCOMMON_OPT} -qpic=large")
  else ()
    set(CCOMMON_OPT "${CCOMMON_OPT} -fPIC")
  endif ()

  if (NOT NOFORTRAN)
    if (${F_COMPILER} STREQUAL "SUN")
      set(FCOMMON_OPT "${FCOMMON_OPT} -pic")
    else ()
      set(FCOMMON_OPT "${FCOMMON_OPT} -fPIC")
    endif ()
  endif()
endif ()

if (DYNAMIC_ARCH)
  if (X86 OR X86_64 OR ARM64 OR PPC)
    set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_ARCH")
    if (DYNAMIC_OLDER)
      set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_OLDER")
    endif ()
  else ()
    unset (DYNAMIC_ARCH)
    message (STATUS "DYNAMIC_ARCH is not supported on the target architecture, removing")
  endif ()
endif ()

if (DYNAMIC_LIST)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_LIST")
  foreach(DCORE ${DYNAMIC_LIST})
    set(CCOMMON_OPT "${CCOMMON_OPT} -DDYN_${DCORE}")
  endforeach ()
endif ()

if (NO_LAPACK)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_LAPACK")
  #Disable LAPACK C interface
  set(NO_LAPACKE 1)
endif ()

if (NO_LAPACKE)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_LAPACKE")
endif ()

if (NO_AVX)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_AVX")
endif ()

if (X86)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_AVX")
endif ()

if (NO_AVX2)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_AVX2")
endif ()

if (USE_THREAD)
  # USE_SIMPLE_THREADED_LEVEL3 = 1
  # NO_AFFINITY = 1
  set(CCOMMON_OPT "${CCOMMON_OPT} -DSMP_SERVER")

  if (MIPS64)
    if (NOT ${CORE} STREQUAL "LOONGSON3B")
      set(USE_SIMPLE_THREADED_LEVEL3 1)
    endif ()
  endif ()

  if (BIGNUMA)
    set(CCOMMON_OPT "${CCOMMON_OPT} -DBIGNUMA")
  endif ()
endif ()

if (NO_WARMUP)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_WARMUP")
endif ()

if (CONSISTENT_FPCSR)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DCONSISTENT_FPCSR")
endif ()

if (USE_TLS)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DUSE_TLS")
endif ()

# Only for development
# set(CCOMMON_OPT "${CCOMMON_OPT} -DPARAMTEST")
# set(CCOMMON_OPT "${CCOMMON_OPT} -DPREFETCHTEST")
# set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_SWITCHING")
# set(USE_PAPI 1)

if (USE_PAPI)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DUSE_PAPI")
  set(EXTRALIB "${EXTRALIB} -lpapi -lperfctr")
endif ()

if (DYNAMIC_THREADS)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_THREADS")
endif ()

set(CCOMMON_OPT "${CCOMMON_OPT} -DMAX_CPU_NUMBER=${NUM_THREADS}")

set(CCOMMON_OPT "${CCOMMON_OPT} -DMAX_PARALLEL_NUMBER=${NUM_PARALLEL}")

if (BUFFERSIZE)
set(CCOMMON_OPT "${CCOMMON_OPT} -DBUFFERSIZE=${BUFFERSIZE}")
endif ()

if (USE_SIMPLE_THREADED_LEVEL3)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DUSE_SIMPLE_THREADED_LEVEL3")
endif ()

if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
if (DEFINED MAX_STACK_ALLOC)
if (NOT ${MAX_STACK_ALLOC} EQUAL 0)
set(CCOMMON_OPT "${CCOMMON_OPT} -DMAX_STACK_ALLOC=${MAX_STACK_ALLOC}")
endif ()
else ()
set(CCOMMON_OPT "${CCOMMON_OPT} -DMAX_STACK_ALLOC=2048")
endif ()
endif ()

if (DEFINED LIBNAMESUFFIX)
  set(LIBPREFIX "libopenblas_${LIBNAMESUFFIX}")
else ()
  set(LIBPREFIX "libopenblas")
endif ()

if (NOT DEFINED SYMBOLPREFIX)
  set(SYMBOLPREFIX "")
endif ()

if (NOT DEFINED SYMBOLSUFFIX)
  set(SYMBOLSUFFIX "")
endif ()

set(KERNELDIR	"${PROJECT_SOURCE_DIR}/kernel/${ARCH}")

# TODO: need to convert these Makefiles
# include ${PROJECT_SOURCE_DIR}/cmake/${ARCH}.cmake

if (${CORE} STREQUAL "PPC440")
  set(CCOMMON_OPT "${CCOMMON_OPT} -DALLOC_QALLOC")
endif ()

if (${CORE} STREQUAL "PPC440FP2")
  set(STATIC_ALLOCATION 1)
endif ()

if (NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
  set(NO_AFFINITY 1)
endif ()

if (NOT X86_64 AND NOT X86 AND NOT ${CORE} STREQUAL "LOONGSON3B")
  set(NO_AFFINITY 1)
endif ()

if (NO_AFFINITY)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DNO_AFFINITY")
endif ()

if (FUNCTION_PROFILE)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DFUNCTION_PROFILE")
endif ()

if (HUGETLB_ALLOCATION)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DALLOC_HUGETLB")
endif ()

if (DEFINED HUGETLBFILE_ALLOCATION)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DALLOC_HUGETLBFILE -DHUGETLB_FILE_NAME=${HUGETLBFILE_ALLOCATION})")
endif ()

if (STATIC_ALLOCATION)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DALLOC_STATIC")
endif ()

if (DEVICEDRIVER_ALLOCATION)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DALLOC_DEVICEDRIVER -DDEVICEDRIVER_NAME=\"/dev/mapper\"")
endif ()

if (MIXED_MEMORY_ALLOCATION)
  set(CCOMMON_OPT "${CCOMMON_OPT} -DMIXED_MEMORY_ALLOCATION")
endif ()

set(CCOMMON_OPT "${CCOMMON_OPT} -DVERSION=\"\\\"${OpenBLAS_VERSION}\\\"\"")

set(REVISION "-r${OpenBLAS_VERSION}")
set(MAJOR_VERSION ${OpenBLAS_MAJOR_VERSION})

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CCOMMON_OPT}")
if(NOT MSVC)
set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${CCOMMON_OPT}")
endif()
# TODO: not sure what PFLAGS is -hpa
set(PFLAGS "${PFLAGS} ${CCOMMON_OPT} -I${TOPDIR} -DPROFILE ${COMMON_PROF}")

set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${FCOMMON_OPT}")
# TODO: not sure what FPFLAGS is -hpa
set(FPFLAGS "${FPFLAGS} ${FCOMMON_OPT} ${COMMON_PROF}")

#For LAPACK Fortran codes.
set(LAPACK_FFLAGS "${LAPACK_FFLAGS} ${CMAKE_Fortran_FLAGS}")
set(LAPACK_FPFLAGS "${LAPACK_FPFLAGS} ${FPFLAGS}")

#Disable -fopenmp for LAPACK Fortran codes on Windows.
if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
  set(FILTER_FLAGS "-fopenmp;-mp;-openmp;-xopenmp=parallel")
  foreach (FILTER_FLAG ${FILTER_FLAGS})
    string(REPLACE ${FILTER_FLAG} "" LAPACK_FFLAGS ${LAPACK_FFLAGS})
    string(REPLACE ${FILTER_FLAG} "" LAPACK_FPFLAGS ${LAPACK_FPFLAGS})
  endforeach ()
endif ()

if ("${F_COMPILER}" STREQUAL "GFORTRAN")
  # lapack-netlib is rife with uninitialized warnings -hpa
  set(LAPACK_FFLAGS "${LAPACK_FFLAGS} -Wno-maybe-uninitialized")
endif ()

set(LAPACK_CFLAGS "${CMAKE_C_CFLAGS} -DHAVE_LAPACK_CONFIG_H")
if (INTERFACE64)
  set(LAPACK_CFLAGS "${LAPACK_CFLAGS} -DLAPACK_ILP64")
endif ()

if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
  set(LAPACK_CFLAGS "${LAPACK_CFLAGS} -DOPENBLAS_OS_WINDOWS")
endif ()

if (${CMAKE_C_COMPILER} STREQUAL "LSB" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
  set(LAPACK_CFLAGS "${LAPACK_CFLAGS} -DLAPACK_COMPLEX_STRUCTURE")
endif ()

if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
if ("${F_COMPILER}" STREQUAL "FLANG")
if (${CMAKE_Fortran_COMPILER_VERSION} VERSION_LESS_EQUAL 3)
  set(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} -fno-unroll-loops")
endif ()
endif ()
endif ()

if (NOT DEFINED SUFFIX)
  set(SUFFIX o)
endif ()

if (NOT DEFINED PSUFFIX)
  set(PSUFFIX po)
endif ()

if (NOT DEFINED LIBSUFFIX)
  set(LIBSUFFIX a)
endif ()

if (DYNAMIC_ARCH)
  if (USE_THREAD)
    set(LIBNAME "${LIBPREFIX}p${REVISION}.${LIBSUFFIX}")
    set(LIBNAME_P	"${LIBPREFIX}p${REVISION}_p.${LIBSUFFIX}")
  else ()
    set(LIBNAME "${LIBPREFIX}${REVISION}.${LIBSUFFIX}")
    set(LIBNAME_P	"${LIBPREFIX}${REVISION}_p.${LIBSUFFIX}")
  endif ()
else ()
  if (USE_THREAD)
    set(LIBNAME "${LIBPREFIX}_${LIBCORE}p${REVISION}.${LIBSUFFIX}")
    set(LIBNAME_P	"${LIBPREFIX}_${LIBCORE}p${REVISION}_p.${LIBSUFFIX}")
  else ()
    set(LIBNAME	"${LIBPREFIX}_${LIBCORE}${REVISION}.${LIBSUFFIX}")
    set(LIBNAME_P	"${LIBPREFIX}_${LIBCORE}${REVISION}_p.${LIBSUFFIX}")
  endif ()
endif ()


set(LIBDLLNAME "${LIBPREFIX}.dll")
set(LIBSONAME "${LIBNAME}.${LIBSUFFIX}.so")
set(LIBDYNNAME "${LIBNAME}.${LIBSUFFIX}.dylib")
set(LIBDEFNAME "${LIBNAME}.${LIBSUFFIX}.def")
set(LIBEXPNAME "${LIBNAME}.${LIBSUFFIX}.exp")
set(LIBZIPNAME "${LIBNAME}.${LIBSUFFIX}.zip")

set(LIBS "${PROJECT_SOURCE_DIR}/${LIBNAME}")
set(LIBS_P "${PROJECT_SOURCE_DIR}/${LIBNAME_P}")


set(LIB_COMPONENTS BLAS)
if (NOT NO_CBLAS)
  set(LIB_COMPONENTS "${LIB_COMPONENTS} CBLAS")
endif ()

if (NOT NO_LAPACK)
  set(LIB_COMPONENTS "${LIB_COMPONENTS} LAPACK")
  if (NOT NO_LAPACKE)
    set(LIB_COMPONENTS "${LIB_COMPONENTS} LAPACKE")
  endif ()
  if (BUILD_RELAPACK)
    set(LIB_COMPONENTS "${LIB_COMPONENTS} ReLAPACK")
  endif ()
endif ()

if (ONLY_CBLAS)
  set(LIB_COMPONENTS CBLAS)
endif ()


# For GEMM3M
set(USE_GEMM3M 0)

if (DEFINED ARCH)
  if (X86 OR X86_64 OR ${ARCH} STREQUAL "ia64" OR MIPS64)
    set(USE_GEMM3M 1)
  endif ()

  if (${CORE} STREQUAL "generic")
    set(USE_GEMM3M 0)
  endif ()
endif ()


#export OSNAME
#export ARCH
#export CORE
#export LIBCORE
#export PGCPATH
#export CONFIG
#export CC
#export FC
#export BU
#export FU
#export NEED2UNDERSCORES
#export USE_THREAD
#export NUM_THREADS
#export NUM_CORES
#export SMP
#export MAKEFILE_RULE
#export NEED_PIC
#export BINARY
#export BINARY32
#export BINARY64
#export F_COMPILER
#export C_COMPILER
#export USE_OPENMP
#export CROSS
#export CROSS_SUFFIX
#export NOFORTRAN
#export NO_FBLAS
#export EXTRALIB
#export CEXTRALIB
#export FEXTRALIB
#export HAVE_SSE
#export HAVE_SSE2
#export HAVE_SSE3
#export HAVE_SSSE3
#export HAVE_SSE4_1
#export HAVE_SSE4_2
#export HAVE_SSE4A
#export HAVE_SSE5
#export HAVE_AVX
#export HAVE_VFP
#export HAVE_VFPV3
#export HAVE_VFPV4
#export HAVE_NEON
#export KERNELDIR
#export FUNCTION_PROFILE
#export TARGET_CORE
#
#export SHGEMM_UNROLL_M
#export SHGEMM_UNROLL_N
#export SGEMM_UNROLL_M
#export SGEMM_UNROLL_N
#export DGEMM_UNROLL_M
#export DGEMM_UNROLL_N
#export QGEMM_UNROLL_M
#export QGEMM_UNROLL_N
#export CGEMM_UNROLL_M
#export CGEMM_UNROLL_N
#export ZGEMM_UNROLL_M
#export ZGEMM_UNROLL_N
#export XGEMM_UNROLL_M
#export XGEMM_UNROLL_N
#export CGEMM3M_UNROLL_M
#export CGEMM3M_UNROLL_N
#export ZGEMM3M_UNROLL_M
#export ZGEMM3M_UNROLL_N
#export XGEMM3M_UNROLL_M
#export XGEMM3M_UNROLL_N


#if (USE_CUDA)
#  export CUDADIR
#  export CUCC
#  export CUFLAGS
#  export CULIB
#endif