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openblas: enable ARM-specific optimizations #23443

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Feb 17, 2024
Merged

openblas: enable ARM-specific optimizations #23443

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19 changes: 16 additions & 3 deletions libs/openblas/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk

PKG_NAME:=OpenBLAS
PKG_VERSION:=0.3.26
PKG_RELEASE:=1
PKG_RELEASE:=2

PKG_SOURCE:=OpenBLAS-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=https://github.com/xianyi/OpenBLAS/releases/download/v$(PKG_VERSION)/
Expand Down Expand Up @@ -49,13 +49,26 @@ endmenu
endef

OPENBLAS_TARGET=$(call qstrip,$(CONFIG_OPENBLAS_TARGET_OVERRIDE))
CPU_TYPE=$(call qstrip,$(CONFIG_CPU_TYPE))

ifeq ($(OPENBLAS_TARGET),)
# initialize to GENERIC as default
OPENBLAS_TARGET:=GENERIC

ifeq ($(ARCH),aarch64)
ifneq ($(findstring cortex-a9,$(CONFIG_CPU_TYPE)),)
ifneq ($(findstring neon,$(CONFIG_CPU_TYPE)),)
# CORTEXA9 relies on NEON
OPENBLAS_TARGET:=CORTEXA9
else
# Fallback for CPUs without NEON
OPENBLAS_TARGET:=ARMV7
endif
else ifneq ($(findstring cortex-a15,$(CONFIG_CPU_TYPE)),)
OPENBLAS_TARGET:=CORTEXA15
else ifneq ($(findstring cortex-a53,$(CONFIG_CPU_TYPE)),)
OPENBLAS_TARGET:=CORTEXA53
else ifneq ($(findstring cortex-a72,$(CONFIG_CPU_TYPE)),)
OPENBLAS_TARGET:=CORTEXA72
else ifeq ($(ARCH),aarch64)
OPENBLAS_TARGET:=ARMV8
else ifeq ($(ARCH),arm)
OPENBLAS_TARGET:=ARMV5
Expand Down
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