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_PATCHLEVEL = $(shell echo __GNUC_PATCHLEVEL__ | $(CC) -E -x c - | tail -n 1)
16 GCC_VERSION = $(GCC_MAJOR)$(GCC_MINOR)
18 # if GCC is older than 4.x
19 ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
21 $(warning You are using GCC < 4.x. This is neither supported, nor tested.)
25 # GCC graceful degradation
26 # GCC 4.2.x - added support for generic target
27 # GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
28 # GCC 4.4.x - added support for avx, aes, pclmul
29 # GCC 4.5.x - added support for atom
30 # GCC 4.6.x - added support for corei7, corei7-avx
31 # GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
32 # GCC 4.9.x - added support for armv8-a+crc
34 ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
35 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
36 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
38 ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
39 MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
40 MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
42 ifeq ($(shell test $(GCC_VERSION) -lt 46 && echo 1), 1)
43 MACHINE_CFLAGS := $(patsubst -march=corei7-avx,-march=core2 -maes -mpclmul -mavx,$(MACHINE_CFLAGS))
44 MACHINE_CFLAGS := $(patsubst -march=corei7,-march=core2 -maes -mpclmul,$(MACHINE_CFLAGS))
46 ifeq ($(shell test $(GCC_VERSION) -lt 45 && echo 1), 1)
47 MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
49 ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
50 MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
51 ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
52 MACHINE_CFLAGS += -msse4.2
54 ifneq ($(findstring SSE4_1, $(CPUFLAGS)),)
55 MACHINE_CFLAGS += -msse4.1
58 ifeq ($(shell test $(GCC_VERSION) -lt 43 && echo 1), 1)
59 MACHINE_CFLAGS := $(filter-out -msse% -mssse%,$(MACHINE_CFLAGS))
60 MACHINE_CFLAGS := $(patsubst -march=core2,-march=generic,$(MACHINE_CFLAGS))
61 MACHINE_CFLAGS += -msse3
63 ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
64 MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
67 # Disable thunderx PMD for gcc < 4.7
68 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
69 CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
72 # Disable OPDL PMD for gcc < 4.7
73 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
74 CONFIG_RTE_LIBRTE_PMD_OPDL_EVENTDEV=d
77 # Disable octeontx event PMD for gcc < 4.8.6
78 ifeq ($(shell test $(GCC_VERSION)$(GCC_PATCHLEVEL) -lt 486 && echo 1), 1)
79 CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF=d
80 CONFIG_RTE_LIBRTE_OCTEONTX_MEMPOOL=d
81 CONFIG_RTE_LIBRTE_OCTEONTX_PMD=d