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option (ENABLE_BLAS "Enable openblas for fast neural network processing [default: OFF]" OFF)
IF(ENABLE_BLAS MATCHES "ON")
ProcessPackage(BLAS OPTIONAL_INCLUDE LIBRARY openblas blas
INCLUDE cblas.h INCLUDE_SUFFIXES include/openblas
include/blas
ROOT ${BLAS_ROOT_DIR}
LIB_OUTPUT BLAS_REQUIRED_LIBRARIES)
ProcessPackage(BLAS_LAPACK OPTIONAL_INCLUDE LIBRARY lapack
INCLUDE cblas.h INCLUDE_SUFFIXES include/openblas
include/blas
ROOT ${BLAS_ROOT_DIR}
LIB_OUTPUT BLAS_REQUIRED_LIBRARIES)
ENDIF()
IF(WITH_BLAS)
MESSAGE(STATUS "Use openblas to accelerate kann")
IF(NOT BLAS_INCLUDE)
FIND_FILE(HAVE_CBLAS_H HINTS "${RSPAMD_SEARCH_PATH}"
NAMES cblas.h
DOC "Path to cblas.h header")
IF(NOT HAVE_CBLAS_H)
MESSAGE(STATUS "Blas header cblas.h has not been found, use internal workaround")
ELSE()
SET(HAVE_CBLAS_H 1)
ENDIF()
ELSE()
SET(HAVE_CBLAS_H 1)
ENDIF()
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/sgemm.c" "
#include <stddef.h>
enum CBLAS_ORDER {CblasRowMajor=101, CblasColMajor=102 };
enum CBLAS_TRANSPOSE {CblasNoTrans=111, CblasTrans=112 };
extern void cblas_sgemm(const enum CBLAS_ORDER Order,
const enum CBLAS_TRANSPOSE TA,
const enum CBLAS_TRANSPOSE TB,
const int M, const int N, const int K,
const float alpha, const float *A, const int lda,
const float *B, const int ldb, const float beta,
float *C, const int ldc);
int main(int argc, char **argv)
{
cblas_sgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans, 0, 0, 0, 0, NULL, 0,
NULL, 0, 0, NULL, 0);
return 0;
}
")
try_compile(HAVE_CBLAS_SGEMM
${CMAKE_CURRENT_BINARY_DIR}
"${CMAKE_CURRENT_BINARY_DIR}/sgemm.c"
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
LINK_LIBRARIES ${BLAS_REQUIRED_LIBRARIES}
OUTPUT_VARIABLE SGEMM_ERR)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/saxpy.c" "
#include <stddef.h>
extern void cblas_saxpy(const int __N,
const float __alpha, const float *__X, const int __incX, float *__Y, const int __incY);
int main(int argc, char **argv)
{
cblas_saxpy(0, 0, NULL, 0, NULL, 0);
return 0;
}
")
try_compile(HAVE_CBLAS_SAXPY
${CMAKE_CURRENT_BINARY_DIR}
"${CMAKE_CURRENT_BINARY_DIR}/saxpy.c"
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
LINK_LIBRARIES ${BLAS_REQUIRED_LIBRARIES}
OUTPUT_VARIABLE SAXPY_ERR)
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/openblas_set_num_threads.c" "
#include <stddef.h>
extern void openblas_set_num_threads(int num_threads);
int main(int argc, char **argv)
{
openblas_set_num_threads(1);
return 0;
}
")
try_compile(HAVE_OPENBLAS_SET_NUM_THREADS
${CMAKE_CURRENT_BINARY_DIR}
"${CMAKE_CURRENT_BINARY_DIR}/openblas_set_num_threads.c"
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
LINK_LIBRARIES ${BLAS_REQUIRED_LIBRARIES}
OUTPUT_VARIABLE OPENBLAS_SET_NUM_THREADS_ERR)
# Cmake is just brain damaged
#CHECK_LIBRARY_EXISTS(${BLAS_REQUIRED_LIBRARIES} cblas_sgemm "" HAVE_CBLAS_SGEMM)
if(HAVE_CBLAS_SGEMM)
MESSAGE(STATUS "Blas has CBLAS sgemm")
else()
MESSAGE(STATUS "Blas has -NOT- CBLAS sgemm, use internal workaround: ${SGEMM_ERR}")
endif()
if(HAVE_CBLAS_SAXPY)
MESSAGE(STATUS "Blas has CBLAS saxpy")
else()
MESSAGE(STATUS "Blas has -NOT- CBLAS saxpy, use internal workaround: ${SAXPY_ERR}")
endif()
SET(HAVE_CBLAS 1)
ENDIF(WITH_BLAS)
CONFIGURE_FILE("${CMAKE_SOURCE_DIR}/blas-config.h.in" "${CMAKE_BINARY_DIR}/src/blas-config.h")
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