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blas.buildlink3.mk
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# $NetBSD: blas.buildlink3.mk,v 1.6 2024/06/28 13:59:43 ryoon Exp $
#
# This Makefile fragment is meant to be included by packages that use any
# BLAS (Basic Linear Algebra System) implementation instead of one particular
# one.
#
# Since pkgsrc always ships BLAS and LAPACK together (as upstream
# implementations do), this adds both BLAS_LIBS and LAPACK_LIBS to the linker
# flags. Often, they will be identical or at least redundant. LAPACK_LIBS
# does include BLAS_LIBS, in any case.
#
# The C interfaces CBLAS and LAPACKE are also selected
# via BLAS_C_INTERFACE in the package and respective CBLAS_LIBS and
# LAPACKE_LIBS are set. Also, BLAS_INCLUDES is set to preprocessor
# flags to locate/use respective headers.
#
# Note that use of the Accelerate framework is experimental and only
# attempted if user and package explicitly want it.
#
# Keywords: blas lapack netlib atlas openblas mkl
#
# === User-settable variables ===
#
# PKGSRC_BLAS_TYPES
# This value specifies an exhaustive list of BLAS implementations we wish to
# use in this pkgsrc installation, in descending order of preference.
# The implementation selected for a build will be the first one in
# PKGSRC_BLAS_TYPES that also appears in BLAS_ACCEPTED (see below).
# Typically set in mk.conf.
#
# Possible: one or more of netlib, openblas, openblas_pthread,
# openblas_openmp, accelerate.framework
# (Accelerate has differing API and needs special handling, might
# be supported in a few specific packages ony.)
#
# Default: All currently supported implementations (${_BLAS_TYPES})
# except accelerate.framework
#
# === Package-settable variables ===
#
# BLAS_ACCEPTED
# This is a list of blas packages that are compatible with the current
# package. If not set, any BLAS implementation is OK.
# Typically set in package Makefile.
#
# BLAS_C_INTERFACE
# Set to yes if the package requires CBLAS or LAPACKE. This defines
# BLAS_INCLUDES and pulls in additional packages for netlib. Optimized
# implementations include the C interfaces in the main library anyway,
# but you still have the effect on BLAS_INCLUDES.
#
# BLAS_INDEX64
# Set to yes if the package wants to utilize 64 bit indices.
#
# === Variables automatically set here for use in package builds ===
#
# BLAS_TYPE
# This is the BLAS implementation chosen for a particular package build from
# PKGSRC_BLAS_TYPES and BLAS_ACCEPTED. If PKGSRC_BLAS_TYPES and
# BLAS_ACCEPTED have no implementations in common, it defaults to none
# and the build fails.
# BLAS_LIBS
# Linker flags used for linking to BLAS library
# LAPACK_LIBS
# Linker flags used for linking to LAPACK library
# (including BLAS)
# CBLAS_LIBS
# Linker flags used for linking to CBLAS library
# (including BLAS)
# LAPACKE_LIBS
# Linker flags used for linking to LAPACKE library
# (including BLAS and LAPACK)
# BLAS_INCLUDES
# Preprocessor flags to locate/use C interfaces
# (both for CBLAS and LAPACKE)
# BLAS_PC, CBLAS_PC, LAPACK_PC, LAPACKE_PC
# Names of pkg-config modules for the respective API. For optimized BLAS,
# they will usually be identical.
.if !defined(MK_BLAS_BUILDLINK3_MK)
MK_BLAS_BUILDLINK3_MK=
BUILD_DEFS+= PKGSRC_BLAS_TYPES
BUILD_DEFS_EFFECTS+= BLAS_TYPE BLAS_LIBS LAPACK_LIBS \
CBLAS_LIBS LAPACKE_LIBS BLAS_INCLUDES \
BLAS_PC CBLAS_PC LAPACK_PC LAPACKE_PC
.include "../../mk/bsd.prefs.mk"
# List of all possible BLAS choices, in order of *DEFAULT* preference.
# netlib is the reference implementation to which all others conform and
# should come first by default for maximum compatibility. It is also the
# slowest and not desirable in many situations. Users can override by setting
# PKGSRC_BLAS_TYPES. (See comment above)
_BLAS_TYPES= netlib openblas openblas_pthread openblas_openmp
# The Accelerate framework is special, as it does not offer BLAS API compatible
# to the others. See liboctave/util/blaswrap.c in octave sources, or
# the wrapper https://github.com/mcg1969/vecLibFort that one might want to
# package.
# We have it as option only if user explicitly set it in PKGSRC_BLAS_TYPES
# and the package accepts it explicitly.
BLAS_ACCEPTED?= ${_BLAS_TYPES}
PKGSRC_BLAS_TYPES?= ${_BLAS_TYPES}
.if !empty(BLAS_INDEX64:M[yY][eE][sS])
_BLAS_64= 64
.else
_BLAS_64=
.endif
_BLAS_MATCH=
.for b in ${PKGSRC_BLAS_TYPES}
# Seems like Accelerate does not offer a 64 bit interface (yet?).
# Exclude from list in that case, even if present.
. if ${b} != "accelerate.framework" || ( empty(_BLAS_64) \
&& exists(/System/Library/Frameworks/Accelerate.framework) )
_BLAS_MATCH+= ${BLAS_ACCEPTED:M${b}}
. endif
.endfor
.if !empty(_BLAS_MATCH)
BLAS_TYPE= ${_BLAS_MATCH:[1]}
.else
BLAS_TYPE= none
.endif
.if ${BLAS_TYPE} == "netlib"
_BLAS_PKGPATH= math/lapack${_BLAS_64}
_CBLAS_PKGPATH= math/cblas${_BLAS_64}
_LAPACKE_PKGPATH= math/lapacke${_BLAS_64}
BLAS_LIBS= -lblas${_BLAS_64}
LAPACK_LIBS= -llapack${_BLAS_64} ${BLAS_LIBS}
CBLAS_LIBS= -lcblas${_BLAS_64} ${BLAS_LIBS}
LAPACKE_LIBS= -llapacke${_BLAS_64} ${LAPACK_LIBS}
BLAS_INCLUDES= -I${PREFIX}/include/netlib${_BLAS_64}
BLAS_PC= blas${_BLAS_64}
LAPACK_PC= lapack${_BLAS_64}
CBLAS_PC= cblas${_BLAS_64}
LAPACKE_PC= lapacke${_BLAS_64}
. if ${_BLAS_64} == "64"
BLAS_INCLUDES+= -DWeirdNEC -DHAVE_LAPACK_CONFIG_H -DLAPACK_ILP64
. endif
.elif ${BLAS_TYPE} == "openblas"
_BLAS_PKGPATH= math/openblas${_BLAS_64}
BLAS_LIBS= -lopenblas${_BLAS_64}
LAPACK_LIBS= ${BLAS_LIBS}
CBLAS_LIBS= ${BLAS_LIBS}
LAPACKE_LIBS= ${BLAS_LIBS}
BLAS_INCLUDES= -I${PREFIX}/include/openblas${_BLAS_64}
BLAS_PC= openblas${_BLAS_64}
LAPACK_PC= ${BLAS_PC}
CBLAS_PC= ${BLAS_PC}
LAPACKE_PC= ${BLAS_PC}
.elif ${BLAS_TYPE} == "openblas_pthread"
_BLAS_PKGPATH= math/openblas${_BLAS_64}_pthread
BLAS_LIBS= -lopenblas${_BLAS_64}_pthread
LAPACK_LIBS= ${BLAS_LIBS}
CBLAS_LIBS= ${BLAS_LIBS}
LAPACKE_LIBS= ${BLAS_LIBS}
BLAS_INCLUDES= -I${PREFIX}/include/openblas${_BLAS_64}_pthread
BLAS_PC= openblas${_BLAS_64}_pthread
LAPACK_PC= ${BLAS_PC}
CBLAS_PC= ${BLAS_PC}
LAPACKE_PC= ${BLAS_PC}
.elif ${BLAS_TYPE} == "openblas_openmp"
_BLAS_PKGPATH= math/openblas${_BLAS_64}_openmp
BLAS_LIBS= -lopenblas${_BLAS_64}_openmp
LAPACK_LIBS= ${BLAS_LIBS}
CBLAS_LIBS= ${BLAS_LIBS}
LAPACKE_LIBS= ${BLAS_LIBS}
BLAS_INCLUDES= -I${PREFIX}/include/openblas${_BLAS_64}_openmp
BLAS_PC= openblas${_BLAS_64}_openmp
LAPACK_PC= ${BLAS_PC}
CBLAS_PC= ${BLAS_PC}
LAPACKE_PC= ${BLAS_PC}
.elif ${BLAS_TYPE} == "accelerate.framework"
# No 64 bit variant yet. Excluded above.
# Actually, only CBLAS_LIBS is safe to use. Others have g77/f2c calling
# conventions, not gfortran. This needs custom handling in packages.
BLAS_LIBS= -framework Accelerate
CBLAS_LIBS= ${BLAS_LIBS}
LAPACK_LIBS= ${BLAS_LIBS}
LAPACKE_LIBS= # build a wrapper for that?
BLAS_INCLUDES= # not delivered yet
# Idea for cblas.h including Accelerate/Accelerate.h (would work the same
# for Intel MKL with -DBLASWRAP_MKL for mkl_cblas.h).
#BLAS_INCLUDES= -I${PREFIX}/include/blaswrap -DBLASWRAP_ACCELERATE
# Same idea: Add accelerate_framework.pc in the blaswrap package and then set
#BLAS_PC= accelerate_framework
.else # invalid or unimplemented type
PKG_FAIL_REASON+= \
"There is no acceptable BLAS for ${PKGNAME} in: ${PKGSRC_BLAS_TYPES}."
.endif
.if defined(_BLAS_PKGPATH)
.include "../../${_BLAS_PKGPATH}/buildlink3.mk"
.endif
.if !empty(BLAS_C_INTERFACE:M[yY][eE][sS])
. if defined(_CBLAS_PKGPATH)
. include "../../${_CBLAS_PKGPATH}/buildlink3.mk"
. endif
. if defined(_LAPACKE_PKGPATH)
. include "../../${_LAPACKE_PKGPATH}/buildlink3.mk"
. endif
.else
. undef CBLAS_LIBS
. undef LAPACKE_LIBS
. undef BLAS_INCLUDES
. undef CBLAS_PC
. undef LAPACKE_PC
.endif
.endif # BLAS_BUILDLINK3_MK