1 # SPDX-License-Identifier: BSD-3-Clause
2 # Copyright(c) 2010-2014 Intel Corporation
5 # CPUID-related options
7 # This was added to support compiler versions which might not support all the
13 GCC_MAJOR = $(shell echo __GNUC__ | $(CC) -E -x c - | tail -n 1)
14 GCC_MINOR = $(shell echo __GNUC_MINOR__ | $(CC) -E -x c - | tail -n 1)
15 GCC_VERSION = $(GCC_MAJOR)$(GCC_MINOR)
17 # if GCC is older than 4.x
18 ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
20 $(warning You are using GCC < 4.x. This is neither supported, nor tested.)
24 # GCC graceful degradation
25 # GCC 4.2.x - added support for generic target
26 # GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
27 # GCC 4.4.x - added support for avx, aes, pclmul
28 # GCC 4.5.x - added support for atom
29 # GCC 4.6.x - added support for corei7, corei7-avx
30 # GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
31 # GCC 4.9.x - added support for armv8-a+crc
33 ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
34 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
35 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
37 ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
38 MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
39 MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
41 ifeq ($(shell test $(GCC_VERSION) -lt 46 && echo 1), 1)
42 MACHINE_CFLAGS := $(patsubst -march=corei7-avx,-march=core2 -maes -mpclmul -mavx,$(MACHINE_CFLAGS))
43 MACHINE_CFLAGS := $(patsubst -march=corei7,-march=core2 -maes -mpclmul,$(MACHINE_CFLAGS))
45 ifeq ($(shell test $(GCC_VERSION) -lt 45 && echo 1), 1)
46 MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
48 ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
49 MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
50 ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
51 MACHINE_CFLAGS += -msse4.2
53 ifneq ($(findstring SSE4_1, $(CPUFLAGS)),)
54 MACHINE_CFLAGS += -msse4.1
57 ifeq ($(shell test $(GCC_VERSION) -lt 43 && echo 1), 1)
58 MACHINE_CFLAGS := $(filter-out -msse% -mssse%,$(MACHINE_CFLAGS))
59 MACHINE_CFLAGS := $(patsubst -march=core2,-march=generic,$(MACHINE_CFLAGS))
60 MACHINE_CFLAGS += -msse3
62 ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
63 MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
66 # Disable thunderx PMD for gcc < 4.7
67 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
68 CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
71 # Disable OPDL PMD for gcc < 4.7
72 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
73 CONFIG_RTE_LIBRTE_PMD_OPDL_EVENTDEV=d