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 HOST_GCC_MAJOR = $(shell echo __GNUC__ | $(HOSTCC) -E -x c - | tail -n 1)
19 HOST_GCC_MINOR = $(shell echo __GNUC_MINOR__ | $(HOSTCC) -E -x c - | tail -n 1)
20 HOST_GCC_PATCHLEVEL = $(shell echo __GNUC_PATCHLEVEL__ | $(HOSTCC) -E -x c - | tail -n 1)
21 HOST_GCC_VERSION = $(HOST_GCC_MAJOR)$(HOST_GCC_MINOR)
23 LD_VERSION = $(shell $(LD) -v)
24 # disable AVX512F support for GCC & binutils 2.30 as a workaround for Bug 97
25 ifneq ($(filter 2.30%,$(LD_VERSION)),)
26 FORCE_DISABLE_AVX512 := y
27 # print warning only once for librte_eal
28 ifneq ($(filter %librte_eal,$(CURDIR)),)
29 $(warning AVX512 support disabled because of ld 2.30. See Bug 97)
33 # if GCC is older than 4.x
34 ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
36 $(warning You are using GCC < 4.x. This is neither supported, nor tested.)
40 # GCC graceful degradation
41 # GCC 4.2.x - added support for generic target
42 # GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
43 # GCC 4.4.x - added support for avx, aes, pclmul
44 # GCC 4.5.x - added support for atom
45 # GCC 4.6.x - added support for corei7, corei7-avx
46 # GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
47 # GCC 4.9.x - added support for armv8-a+crc
49 ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
50 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
51 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
53 ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
54 MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
55 MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
57 ifeq ($(shell test $(GCC_VERSION) -lt 46 && echo 1), 1)
58 MACHINE_CFLAGS := $(patsubst -march=corei7-avx,-march=core2 -maes -mpclmul -mavx,$(MACHINE_CFLAGS))
59 MACHINE_CFLAGS := $(patsubst -march=corei7,-march=core2 -maes -mpclmul,$(MACHINE_CFLAGS))
61 ifeq ($(shell test $(GCC_VERSION) -lt 45 && echo 1), 1)
62 MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
64 ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
65 MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
66 ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
67 MACHINE_CFLAGS += -msse4.2
69 ifneq ($(findstring SSE4_1, $(CPUFLAGS)),)
70 MACHINE_CFLAGS += -msse4.1
73 ifeq ($(shell test $(GCC_VERSION) -lt 43 && echo 1), 1)
74 MACHINE_CFLAGS := $(filter-out -msse% -mssse%,$(MACHINE_CFLAGS))
75 MACHINE_CFLAGS := $(patsubst -march=core2,-march=generic,$(MACHINE_CFLAGS))
76 MACHINE_CFLAGS += -msse3
78 ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
79 MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
82 # Disable thunderx PMD for gcc < 4.7
83 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
84 CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
87 # Disable OPDL PMD for gcc < 4.7
88 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
89 CONFIG_RTE_LIBRTE_PMD_OPDL_EVENTDEV=d
92 # Disable octeontx event PMD for gcc < 4.8.6 & ARCH=arm64
93 ifeq ($(CONFIG_RTE_ARCH), arm64)
94 ifeq ($(shell test $(GCC_VERSION)$(GCC_PATCHLEVEL) -lt 486 && echo 1), 1)
95 CONFIG_RTE_LIBRTE_PMD_OCTEONTX_SSOVF=d
96 CONFIG_RTE_LIBRTE_OCTEONTX_MEMPOOL=d
97 CONFIG_RTE_LIBRTE_OCTEONTX_PMD=d