3c66c4bf79
This delivers 64 bit index BLAS libraries alongside 32 bit ones. This is often
called ILP64 in the BLAS world, as opposed to LP64 where integers are 32 bit
due to the Fortran default integer type, not to be confused with the basic
system ABI used by C. For really large vectors on modern machines, you want
an 'ILP64' BLAS and layers on top of it.
In preparation of better support for vendor BLAS libraries, I had to realize
that you better use the C interfaces supplied by them, not the netlib one
strapped on. A simple reason of practicability: The vendor blas libraries,
just like openblas, like to ship all symbols in one library, so you get them
whether you want it or not. Also implementations may skip Fortran and implement
the underlying functionality directly in C anyway, so one might skip a
layer of indirection. Future will tell if other layers will follow. We still
have the framework of individual layers from Netlib to combine with certain
implementations that miss them (Accelerate framework comes to mind, which
needs further work).
The framework of netlib reference packages for the separate libraries
is instructive and helps keeping things small when you not need all of them.
The installation location of the headers is now in a subdirectory to be able
to have 32 and 64 bit variants independently. The 32 bit ones are linked to
${PREFIX}/include to keep the old picture. We could be brave and remove
those, but there is some value in a build just trying -lcblas and
inclusion of <cblas.h> to be happy.
There is one blas.buildlink3.mk that is supposed to be used only once and
so avoids a combination of conflicting libraries (as the 64 bit index symbols
have the same names as the 32 bit ones).
Basic usage for getting LAPACK+BLAS is still the same as before. You get
CBLAS and LAPACKE by setting BLAS_C_INTERFACE=yes in the package. The 64 bit
indices are selected via BLAS_INDEX64=yes.
Due to the special nature of the Accelerate framework, a package has to
explicitly indicate support for it and it will also not appear on the
list of implementations by default. The reason is that it does provide
mainly CBLAS and CLAPACK (another version of C interface to LAPACK, f2c-based)
and BLAS/LAPACK with f2c/g77 calling conventions. A default build with
gfortran would not like that
This commit also fixes up math/py-numpy and math/py-numpy16 to follow the
new scheme, as that are the only packages directly affected by the change
in CBLAS providership.
188 lines
6.7 KiB
Makefile
188 lines
6.7 KiB
Makefile
# $NetBSD: blas.buildlink3.mk,v 1.2 2021/06/15 04:41:51 thor Exp $
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#
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# This Makefile fragment is meant to be included by packages that use any
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# BLAS (Basic Linear Algebra System) implementation instead of one particular
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# one.
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#
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# Since pkgsrc always ships BLAS and LAPACK together (as upstream
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# implementations do), this adds both BLAS_LIBS and LAPACK_LIBS to the linker
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# flags. Often, they will be identical or at least redundant. LAPACK_LIBS
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# does include BLAS_LIBS, in any case.
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#
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# The C interfaces CBLAS and LAPACKE are also selected
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# via BLAS_C_INTERFACE in the package and respective CBLAS_LIBS and
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# LAPACKE_LIBS are set. Also, BLAS_INCLUDES is set to preprocessor
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# flags to locate/use respective headers.
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#
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# Note that use of the Accelerate framework is experimental and only
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# attempted if user and package explicitly want it.
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#
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# Keywords: blas lapack netlib atlas openblas mkl
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#
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# === User-settable variables ===
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#
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# PKGSRC_BLAS_TYPES
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# This value specifies an exhaustive list of BLAS implementations we wish to
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# use in this pkgsrc installation, in descending order of preference.
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# The implementation selected for a build will be the first one in
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# PKGSRC_BLAS_TYPES that also appears in BLAS_ACCEPTED (see below).
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# Typically set in mk.conf.
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#
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# Possible: one or more of netlib, openblas, openblas_pthread,
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# openblas_openmp, accelerate.framework
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# (Accelerate has differing API and needs special handling, might
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# be supported in a few specific packages ony.)
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#
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# Default: All currently supported implementations (${_BLAS_TYPES})
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# except accelerate.framework
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#
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# === Package-settable variables ===
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#
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# BLAS_ACCEPTED
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# This is a list of blas packages that are compatible with the current
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# package. If not set, any BLAS implementation is OK.
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# Typically set in package Makefile.
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#
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# BLAS_C_INTERFACE
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# Set to yes if the package requires CBLAS or LAPACKE. This defines
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# BLAS_INCLUDES and pulls in additional packages for netlib. Optimized
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# implementations include the C interfaces in the main library anyway,
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# but you still have the effect on BLAS_INCLUDES.
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#
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# BLAS_INDEX64
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# Set to yes if the package wants to utilize 64 bit indices.
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#
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# === Variables automatically set here for use in package builds ===
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#
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# BLAS_TYPE
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# This is the BLAS implementation chosen for a particular package build from
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# PKGSRC_BLAS_TYPES and BLAS_ACCEPTED. If PKGSRC_BLAS_TYPES and
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# BLAS_ACCEPTED have no implementations in common, it defaults to none
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# and the build fails.
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# BLAS_LIBS
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# Linker flags used for linking to BLAS library
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# LAPACK_LIBS
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# Linker flags used for linking to LAPACK library
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# (including BLAS)
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# CBLAS_LIBS
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# Linker flags used for linking to CBLAS library
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# (including BLAS)
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# LAPACKE_LIBS
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# Linker flags used for linking to LAPACKE library
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# (including BLAS and LAPACK)
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# BLAS_INCLUDES
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# Preprocessor flags to locate/use C interfaces
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# (both for CBLAS and LAPACKE)
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.if !defined(MK_BLAS_BUILDLINK3_MK)
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MK_BLAS_BUILDLINK3_MK=
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BUILD_DEFS+= PKGSRC_BLAS_TYPES
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BUILD_DEFS_EFFECTS+= BLAS_TYPE BLAS_LIBS LAPACK_LIBS \
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CBLAS_LIBS LAPACKE_LIBS BLAS_INCLUDES
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.include "../../mk/bsd.prefs.mk"
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# List of all possible BLAS choices, in order of *DEFAULT* preference.
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# netlib is the reference implementation to which all others conform and
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# should come first by default for maximum compatibility. It is also the
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# slowest and not desirable in many situations. Users can override by setting
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# PKGSRC_BLAS_TYPES. (See comment above)
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_BLAS_TYPES= netlib openblas openblas_pthread openblas_openmp
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# The Accelerate framework is special, as it does not offer BLAS API compatible
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# to the others. See liboctave/util/blaswrap.c in octave sources, or
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# the wrapper https://github.com/mcg1969/vecLibFort that one might want to
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# package.
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# We have it as option only if user explicitly set it in PKGSRC_BLAS_TYPES
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# and the package accepts it explicitly.
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BLAS_ACCEPTED?= ${_BLAS_TYPES}
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PKGSRC_BLAS_TYPES?= ${_BLAS_TYPES}
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.if !empty(BLAS_INDEX64:Myes)
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_BLAS_64= 64
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.else
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_BLAS_64=
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.endif
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_BLAS_MATCH=
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.for b in ${PKGSRC_BLAS_TYPES}
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# Seems like Accelerate does not offer a 64 bit interface (yet?).
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# Exclude from list in that case, even if present.
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. if ${b} != "accelerate.framework" || ( empty(_BLAS_64) \
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&& exists(/System/Library/Frameworks/Accelerate.framework) )
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_BLAS_MATCH+= ${BLAS_ACCEPTED:M${b}}
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. endif
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.endfor
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.if !empty(_BLAS_MATCH)
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BLAS_TYPE= ${_BLAS_MATCH:[1]}
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.else
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BLAS_TYPE= none
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.endif
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.if ${BLAS_TYPE} == "netlib"
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_BLAS_PKGPATH= math/lapack${_BLAS_64}
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_CBLAS_PKGPATH= math/cblas${_BLAS_64}
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_LAPACKE_PKGPATH= math/lapacke${_BLAS_64}
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BLAS_LIBS= -lblas${_BLAS_64}
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LAPACK_LIBS= -llapack${_BLAS_64} ${BLAS_LIBS}
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CBLAS_LIBS= -lcblas${_BLAS_64} ${BLAS_LIBS}
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LAPACKE_LIBS= -llapacke${_BLAS_64} ${LAPACK_LIBS}
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BLAS_INCLUDES= -I${PREFIX}/include/netlib${_BLAS_64}
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. if ${_BLAS_64} == "64"
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BLAS_INCLUDES+= -DWeirdNEC -DHAVE_LAPACK_CONFIG_H -DLAPACK_ILP64
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. endif
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.elif ${BLAS_TYPE} == "openblas"
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_BLAS_PKGPATH= math/openblas${_BLAS_64}
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BLAS_LIBS= -lopenblas${_BLAS_64}
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LAPACK_LIBS= ${BLAS_LIBS}
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CBLAS_LIBS= ${BLAS_LIBS}
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LAPACKE_LIBS= ${BLAS_LIBS}
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BLAS_INCLUDES= -I${PREFIX}/include/openblas${_BLAS_64}
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.elif ${BLAS_TYPE} == "openblas_pthread"
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_BLAS_PKGPATH= math/openblas${_BLAS_64}_pthread
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BLAS_LIBS= -lopenblas${_BLAS_64}_pthread
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LAPACK_LIBS= ${BLAS_LIBS}
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CBLAS_LIBS= ${BLAS_LIBS}
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LAPACKE_LIBS= ${BLAS_LIBS}
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BLAS_INCLUDES= -I${PREFIX}/include/openblas64_pthread
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.elif ${BLAS_TYPE} == "openblas_openmp"
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_BLAS_PKGPATH= math/openblas${_BLAS_64}_openmp
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BLAS_LIBS= -lopenblas${_BLAS_64}_openmp
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LAPACK_LIBS= ${BLAS_LIBS}
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CBLAS_LIBS= ${BLAS_LIBS}
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LAPACKE_LIBS= ${BLAS_LIBS}
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BLAS_INCLUDES= -I${PREFIX}/include/openblas${_BLAS_64}_openmp
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.elif ${BLAS_TYPE} == "accelerate.framework"
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# No 64 bit variant yet. Excluded above.
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# Actually, only CBLAS_LIBS is safe to use. Others have g77/f2c calling
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# conventions, not gfortran. This needs custom handling in packages.
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BLAS_LIBS= -framework Accelerate
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CBLAS_LIBS= ${BLAS_LIBS}
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LAPACK_LIBS= ${BLAS_LIBS}
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LAPACKE_LIBS= # build a wrapper for that?
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BLAS_INCLUDES= # not delivered yet
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# Idea for cblas.h including Accelerate/Accelerate.h (would work the same
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# for Intel MKL with -DBLASWRAP_MKL for mkl_cblas.h).
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#BLAS_INCLUDES= -I${PREFIX}/include/blaswrap -DBLASWRAP_ACCELERATE
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.else # invalid or unimplemented type
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PKG_FAIL_REASON+= \
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"There is no acceptable BLAS for ${PKGNAME} in: ${PKGSRC_BLAS_TYPES}."
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.endif
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.if defined(_BLAS_PKGPATH)
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.include "../../${_BLAS_PKGPATH}/buildlink3.mk"
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.endif
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.if !empty(BLAS_C_INTERFACE:Myes)
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. if defined(_CBLAS_PKGPATH)
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. include "../../${_CBLAS_PKGPATH}/buildlink3.mk"
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. endif
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. if defined(_LAPACKE_PKGPATH)
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. include "../../${_LAPACKE_PKGPATH}/buildlink3.mk"
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. endif
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.else
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. undef BLAS_INCLUDES
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.endif
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.endif # BLAS_BUILDLINK3_MK
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