Makefile.arm64

###############################################################################
# Copyright (c) 2025, The OpenBLAS Project
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
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#    its contributors may be used to endorse or promote products
#    derived from this software without specific prior written permission.
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###############################################################################

ifneq ($(C_COMPILER), PGI)

ifeq ($(C_COMPILER), CLANG)
ISCLANG=1
endif
ifeq ($(C_COMPILER), FUJITSU)
ISCLANG=1
endif
ifneq (1, $(filter 1,$(GCCVERSIONGT4) $(ISCLANG)))
CCOMMON_OPT += -march=armv8-a
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a
endif


else 


ifeq ($(CORE), ARMV8)
CCOMMON_OPT += -march=armv8-a
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a
endif
endif

ifeq ($(CORE), ARMV8SVE)
CCOMMON_OPT += -march=armv8-a+sve
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a+sve
endif
endif

ifeq ($(CORE), ARMV9SME)
CCOMMON_OPT += -march=armv9-a+sve2+sme
FCOMMON_OPT += -march=armv9-a+sve2
ifdef OS_WINDOWS
ifeq ($(C_COMPILER), CLANG)
CCOMMON_OPT += --aarch64-stack-hazard-size=0
endif
endif
endif

ifeq ($(CORE), CORTEXA53)
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a53
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a53
endif
endif

ifeq ($(CORE), CORTEXA57)
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a57
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a57
endif
endif

ifeq ($(CORE), CORTEXA72)
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
endif
endif

ifeq ($(CORE), CORTEXA73)
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a73
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a73
endif
endif

ifeq ($(CORE), CORTEXA76)
CCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a76
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a76
endif
endif

ifeq ($(CORE), FT2000)
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
endif
endif

# Use a72 tunings because Neoverse-N1 is only available
# in GCC>=9
ifeq ($(CORE), NEOVERSEN1)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ7) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ9) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.2-a -mtune=neoverse-n1
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=neoverse-n1
endif
else
CCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a72
endif
endif
else
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
endif
endif
endif

# Use a72 tunings because Neoverse-V1 is only available
# in GCC>=10.4
ifeq ($(CORE), NEOVERSEV1)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ7) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ10) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCMINORVERSIONGTEQ4) $(GCCVERSIONGTEQ11) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.4-a+sve+bf16
ifeq (1, $(ISCLANG))
CCOMMON_OPT += -mtune=cortex-x1
else
CCOMMON_OPT += -mtune=neoverse-v1
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a -mtune=neoverse-v1
endif
else
CCOMMON_OPT += -march=armv8.4-a+sve+bf16 
ifneq ($(CROSS), 1)
CCOMMON_OPT += -mtune=native
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a 
ifneq ($(CROSS), 1)
FCOMMON_OPT += -mtune=native
endif
endif
endif
else
CCOMMON_OPT += -march=armv8.2-a+sve -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a72
endif
endif
else
CCOMMON_OPT += -march=armv8-a+sve -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
endif
endif
endif

# Use a72 tunings because Neoverse-N2 is only available
# in GCC>=10.4
ifeq ($(CORE), NEOVERSEN2)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ7) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ10) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCMINORVERSIONGTEQ4) $(GCCVERSIONGTEQ11) $(ISCLANG)))
ifneq ($(OSNAME), Darwin)
CCOMMON_OPT += -march=armv8.5-a+sve+sve2+bf16 -mtune=neoverse-n2
else
CCOMMON_OPT += -march=armv8.2-a+sve+bf16 -mtune=cortex-a72
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.5-a+sve+sve2+bf16 -mtune=neoverse-n2
endif
else
CCOMMON_OPT += -march=armv8.5-a+sve+bf16
ifneq ($(CROSS), 1)
CCOMMON_OPT += -mtune=native
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.5-a 
ifneq ($(CROSS), 1)
FCOMMON_OPT += -mtune=native
endif
endif
endif
else
CCOMMON_OPT += -march=armv8.2-a+sve+bf16 -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a72
endif
endif
else
CCOMMON_OPT += -march=armv8-a+sve+bf16 -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a72
endif
endif
endif

# Detect ARM Neoverse V2.
ifeq ($(CORE), NEOVERSEV2)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ13) $(ISCLANG)))
CCOMMON_OPT += -mcpu=neoverse-v2
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -mcpu=neoverse-v2
endif
else
CCOMMON_OPT += -march=armv8.2-a+sve+bf16 -mtune=neoverse-n1
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=neoverse-n1
endif
endif
endif

# Detect Ampere AmpereOne(ampere1,ampere1a) processors.
ifeq ($(CORE), AMPERE1)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ12) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.6-a+crypto+crc+fp16+sha3+rng
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.6-a+crypto+crc+fp16+sha3+rng
endif
endif
endif

# Use a53 tunings because a55 is only available in GCC>=8.1
ifeq ($(CORE), CORTEXA55)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ7) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ8) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a55
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a55
endif
else
CCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a53
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a53
endif
endif
else
CCOMMON_OPT += -march=armv8-a -mtune=cortex-a53
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=cortex-a53
endif
endif
endif

ifeq ($(CORE), THUNDERX)
CCOMMON_OPT += -march=armv8-a -mtune=thunderx
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=thunderx
endif
endif

ifeq ($(CORE), FALKOR)
CCOMMON_OPT += -march=armv8-a -mtune=falkor
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=falkor
endif
endif

ifeq ($(CORE), THUNDERX2T99)
CCOMMON_OPT += -march=armv8.1-a -mtune=thunderx2t99
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.1-a -mtune=thunderx2t99
endif
endif

ifeq ($(CORE), THUNDERX3T110)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ10) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.3-a 
ifeq (0, $(ISCLANG))
CCOMMON_OPT += -mtune=thunderx3t110
else
CCOMMON_OPT += -mtune=thunderx2t99
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.3-a -mtune=thunderx3t110
endif
else
CCOMMON_OPT += -march=armv8.1-a -mtune=thunderx2t99
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.1-a -mtune=thunderx2t99
endif
endif
endif

ifeq ($(CORE), VORTEX)
CCOMMON_OPT += -march=armv8.3-a
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.3-a
endif
endif

ifeq ($(CORE), VORTEXM4)
ifneq ($(C_COMPILER), GCC)
ifeq ($(APPLECLANG),1)
CCOMMON_OPT += -march=armv8.4-a+sme
else
CCOMMON_OPT += -march=armv8.4-a+sme
override LDFLAGS += -lclang_rt_builtins-aarch64
endif
else
CCOMMON_OPT += -march=armv8.4-a
endif
FCOMMON_OPT += -march=armv8.4-a
endif

ifeq (1, $(filter 1,$(GCCVERSIONGTEQ9) $(ISCLANG)))
ifeq ($(CORE), TSV110)
CCOMMON_OPT += -march=armv8.2-a -mtune=tsv110
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=tsv110
endif
endif
endif

ifeq (1, $(filter 1,$(GCCVERSIONGTEQ9) $(ISCLANG)))
ifeq ($(CORE), EMAG8180)
CCOMMON_OPT += -march=armv8-a
ifeq  ($(ISCLANG), 0)
CCOMMON_OPT += -mtune=emag
endif
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8-a -mtune=emag
endif
endif
endif

ifeq ($(CORE), A64FX)
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ10) $(ISCLANG)))
ifeq (1, $(filter 1,$(GCCMINORVERSIONGTEQ3) $(GCCVERSIONGTEQ11) $(ISCLANG)))
CCOMMON_OPT += -march=armv8.2-a+sve -mtune=a64fx
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a+sve -mtune=a64fx
endif
else
CCOMMON_OPT += -march=armv8.4-a+sve -mtune=neoverse-n1
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a -mtune=neoverse-n1
endif
endif
endif
endif

ifeq (1, $(filter 1,$(GCCVERSIONGTEQ11) $(ISCLANG)))
ifeq ($(CORE), CORTEXX1)
CCOMMON_OPT += -march=armv8.2-a
ifeq (1, $(filter 1,$(GCCMINORVERSIONGTEQ4) $(GCCVERSIONGTEQ12) $(ISCLANG)))
CCOMMON_OPT += -mtune=cortex-x1
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-x1
endif
else
CCOMMON_OPT += -mtune=cortex-a72
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.2-a -mtune=cortex-a72
endif
endif
endif
endif

ifeq (1, $(filter 1,$(GCCVERSIONGTEQ11) $(ISCLANG)))
ifeq ($(CORE), CORTEXX2)
CCOMMON_OPT += -march=armv8.4-a+sve
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a+sve
endif
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ12) $(ISCLANG)))
CCOMMON_OPT += -mtune=cortex-x2
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -mtune=cortex-x2
endif
endif
endif
endif

#ifeq (1, $(filter 1,$(ISCLANG)))
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ11) $(ISCLANG)))
ifeq ($(CORE), CORTEXA510)
CCOMMON_OPT += -march=armv8.4-a+sve
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a+sve
endif
endif
endif

ifeq (1, $(filter 1,$(GCCVERSIONGTEQ11) $(ISCLANG)))
ifeq ($(CORE), CORTEXA710)
CCOMMON_OPT += -march=armv8.4-a+sve
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -march=armv8.4-a+sve
endif
ifeq (1, $(filter 1,$(GCCVERSIONGTEQ12) $(ISCLANG)))
CCOMMON_OPT += -mtune=cortex-a710
ifneq ($(F_COMPILER), NAG)
FCOMMON_OPT += -mtune=cortex-a710
endif
endif
endif
endif

endif

else
# NVIDIA HPC options necessary to enable SVE in the compiler
ifeq ($(CORE), THUNDERX2T99)
CCOMMON_OPT += -tp=thunderx2t99
FCOMMON_OPT += -tp=thunderx2t99
endif
ifeq ($(CORE), NEOVERSEN1)
CCOMMON_OPT += -tp=neoverse-n1
FCOMMON_OPT += -tp=neoverse-n1
endif
ifeq ($(CORE), NEOVERSEV1)
CCOMMON_OPT += -tp=neoverse-v1
FCOMMON_OPT += -tp=neoverse-v1
endif
ifeq ($(CORE), NEOVERSEV2)
CCOMMON_OPT += -tp=neoverse-v2
FCOMMON_OPT += -tp=neoverse-v2
endif
ifeq ($(CORE), ARMV8SVE)
CCOMMON_OPT += -tp=neoverse-v2
FCOMMON_OPT += -tp=neoverse-v2
endif
ifeq ($(CORE), ARMV9SVE)
CCOMMON_OPT += -tp=neoverse-v2
FCOMMON_OPT += -tp=neoverse-v2
endif

endif