import openblas_buildsys_snips.make.blas_kernel as opbk
import openblas_buildsys_snips._utils as oputil

from pathlib import Path

BLAS Kernels

Makefiles to meson.build

The idea is to use functions from the library to parse the Makefiles into an easy to maintain set of meson.build files.

First approximation

The first attempt should be and is just collecting the symbols and the relevant flags. We will use the generic variant for an x86_64 machine.

# For tests
lines = """
$(KDIR)samax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)samax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(SAMAXKERNEL)
	$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@

$(KDIR)damax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)damax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(DAMAXKERNEL)
	$(CC) -c $(CFLAGS) -UCOMPLEX -DDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@

$(KDIR)qamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)qamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(QAMAXKERNEL)
	$(CC) -c $(CFLAGS) -UCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@

$(KDIR)camax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)camax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(CAMAXKERNEL)
	$(CC) -c $(CFLAGS) -DCOMPLEX -UDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@

$(KDIR)zamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)zamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(ZAMAXKERNEL)
	$(CC) -c $(CFLAGS) -DCOMPLEX -DDOUBLE  -DUSE_ABS -UUSE_MIN $< -o $@

$(KDIR)xamax_k$(TSUFFIX).$(SUFFIX)  $(KDIR)xamax_k$(TPSUFFIX).$(PSUFFIX)  : $(KERNELDIR)/$(XAMAXKERNEL)
	$(CC) -c $(CFLAGS) -DCOMPLEX -DXDOUBLE -DUSE_ABS -UUSE_MIN $< -o $@
""".strip().split('\n')

Level 1

ml = Path.cwd() / Path("../../../tests/test_blas_symb/Makefile.L1")
lines = ml.read_text().split('\n')

opbk.parse_compilation_commands(oputil.pair_suffix_lines(lines), "amax")

Level 2

These are a straightforward extension of L1 and work pretty much the same way.

ml = Path.cwd() / Path("../../../tests/test_blas_symb/Makefile.L2")
lines = ml.read_text().split('\n')
opbk.parse_compilation_commands(oputil.pair_suffix_lines(lines), "hemv")

Level 3

ml = Path.cwd() / Path("../../../tests/test_blas_symb/Makefile.L3")
lines = ml.read_text().split('\n')
opbk.parse_compilation_commands(oputil.pair_suffix_lines(lines), "gemm_small_kernel_b0")