152 lines
5.4 KiB
Python
152 lines
5.4 KiB
Python
from spack import *
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import sys
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import os
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import shutil
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class Openblas(Package):
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"""OpenBLAS: An optimized BLAS library"""
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homepage = "http://www.openblas.net"
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url = "http://github.com/xianyi/OpenBLAS/archive/v0.2.15.tar.gz"
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version('0.2.18', '805e7f660877d588ea7e3792cda2ee65')
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version('0.2.17', '664a12807f2a2a7cda4781e3ab2ae0e1')
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version('0.2.16', 'fef46ab92463bdbb1479dcec594ef6dc')
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version('0.2.15', 'b1190f3d3471685f17cfd1ec1d252ac9')
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variant('shared', default=True, description="Build shared libraries as well as static libs.")
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variant('openmp', default=False, description="Enable OpenMP support.")
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variant('fpic', default=True, description="Build position independent code")
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# virtual dependency
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provides('blas')
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provides('lapack')
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patch('make.patch')
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def install(self, spec, prefix):
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# Openblas is picky about compilers. Configure fails with
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# FC=/abs/path/to/f77, whereas FC=f77 works fine.
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# To circumvent this, provide basename only:
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make_defs = ['CC=%s' % os.path.basename(spack_cc),
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'FC=%s' % os.path.basename(spack_f77),
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'MAKE_NO_J=1']
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make_targets = ['libs', 'netlib']
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# Build shared if variant is set.
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if '+shared' in spec:
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make_targets += ['shared']
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else:
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if '+fpic' in spec:
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make_defs.extend(['CFLAGS=-fPIC', 'FFLAGS=-fPIC'])
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make_defs += ['NO_SHARED=1']
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# fix missing _dggsvd_ and _sggsvd_
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if spec.satisfies('@0.2.16'):
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make_defs += ['BUILD_LAPACK_DEPRECATED=1']
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# Add support for OpenMP
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if '+openmp' in spec:
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# Note: Apple's most recent Clang 7.3.0 still does not support OpenMP.
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# What is worse, Openblas (as of 0.2.18) hardcoded that OpenMP cannot
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# be used with any (!) compiler named clang, bummer.
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if spec.satisfies('%clang'):
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raise InstallError('OpenBLAS does not support OpenMP with clang!')
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make_defs += ['USE_OPENMP=1']
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make_args = make_defs + make_targets
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make(*make_args)
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make("tests", *make_defs)
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# no quotes around prefix (spack doesn't use a shell)
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make('install', "PREFIX=%s" % prefix, *make_defs)
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# Blas virtual package should provide blas.a and libblas.a
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with working_dir(prefix.lib):
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symlink('libopenblas.a', 'blas.a')
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symlink('libopenblas.a', 'libblas.a')
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if '+shared' in spec:
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symlink('libopenblas.%s' % dso_suffix, 'libblas.%s' % dso_suffix)
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# Lapack virtual package should provide liblapack.a
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with working_dir(prefix.lib):
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symlink('libopenblas.a', 'liblapack.a')
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if '+shared' in spec:
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symlink('libopenblas.%s' % dso_suffix, 'liblapack.%s' % dso_suffix)
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# Openblas may pass its own test but still fail to compile Lapack
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# symbols. To make sure we get working Blas and Lapack, do a small test.
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self.check_install(spec)
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def setup_dependent_package(self, module, dspec):
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# This is WIP for a prototype interface for virtual packages.
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# We can update this as more builds start depending on BLAS/LAPACK.
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libdir = find_library_path('libopenblas.a', self.prefix.lib64, self.prefix.lib)
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self.spec.blas_static_lib = join_path(libdir, 'libopenblas.a')
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self.spec.lapack_static_lib = self.spec.blas_static_lib
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if '+shared' in self.spec:
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self.spec.blas_shared_lib = join_path(libdir, 'libopenblas.%s' % dso_suffix)
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self.spec.lapack_shared_lib = self.spec.blas_shared_lib
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def check_install(self, spec):
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"Build and run a small program to test that we have Lapack symbols"
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print "Checking Openblas installation..."
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checkdir = "spack-check"
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with working_dir(checkdir, create=True):
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source = r"""
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#include <cblas.h>
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#include <stdio.h>
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int main(void) {
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int i=0;
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double A[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
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double B[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
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double C[9] = {.5, .5, .5, .5, .5, .5, .5, .5, .5};
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cblas_dgemm(CblasColMajor, CblasNoTrans, CblasTrans,
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3, 3, 2, 1, A, 3, B, 3, 2, C, 3);
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for (i = 0; i < 9; i++)
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printf("%f\n", C[i]);
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return 0;
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}
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"""
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expected = """\
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11.000000
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-9.000000
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5.000000
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-9.000000
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21.000000
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-1.000000
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5.000000
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-1.000000
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3.000000
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"""
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with open("check.c", 'w') as f:
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f.write(source)
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cc = which('cc')
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# TODO: Automate these path and library settings
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cc('-c', "-I%s" % join_path(spec.prefix, "include"), "check.c")
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cc('-o', "check", "check.o",
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"-L%s" % join_path(spec.prefix, "lib"), "-llapack", "-lblas", "-lpthread")
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try:
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check = Executable('./check')
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output = check(return_output=True)
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except:
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output = ""
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success = output == expected
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if not success:
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print "Produced output does not match expected output."
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print "Expected output:"
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print '-'*80
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print expected
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print '-'*80
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print "Produced output:"
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print '-'*80
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print output
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print '-'*80
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raise RuntimeError("Openblas install check failed")
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shutil.rmtree(checkdir)
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