3 # Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
10 # * Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # * Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in
14 # the documentation and/or other materials provided with the
16 # * Neither the name of Intel Corporation nor the names of its
17 # contributors may be used to endorse or promote products derived
18 # from this software without specific prior written permission.
20 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 # CPUID-related options
35 # This was added to support compiler versions which might not support all the
41 GCC_MAJOR = $(shell echo __GNUC__ | $(CC) -E -x c - | tail -n 1)
42 GCC_MINOR = $(shell echo __GNUC_MINOR__ | $(CC) -E -x c - | tail -n 1)
43 GCC_VERSION = $(GCC_MAJOR)$(GCC_MINOR)
45 # if GCC is older than 4.x
46 ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
48 $(warning You are using GCC < 4.x. This is neither supported, nor tested.)
52 # GCC graceful degradation
53 # GCC 4.2.x - added support for generic target
54 # GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
55 # GCC 4.4.x - added support for avx, aes, pclmul
56 # GCC 4.5.x - added support for atom
57 # GCC 4.6.x - added support for corei7, corei7-avx
58 # GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
59 # GCC 4.9.x - added support for armv8-a+crc
61 ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
62 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
63 MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
65 ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
66 MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
67 MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
69 ifeq ($(shell test $(GCC_VERSION) -lt 46 && echo 1), 1)
70 MACHINE_CFLAGS := $(patsubst -march=corei7-avx,-march=core2 -maes -mpclmul -mavx,$(MACHINE_CFLAGS))
71 MACHINE_CFLAGS := $(patsubst -march=corei7,-march=core2 -maes -mpclmul,$(MACHINE_CFLAGS))
73 ifeq ($(shell test $(GCC_VERSION) -lt 45 && echo 1), 1)
74 MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
76 ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
77 MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
78 ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
79 MACHINE_CFLAGS += -msse4.2
81 ifneq ($(findstring SSE4_1, $(CPUFLAGS)),)
82 MACHINE_CFLAGS += -msse4.1
85 ifeq ($(shell test $(GCC_VERSION) -lt 43 && echo 1), 1)
86 MACHINE_CFLAGS := $(filter-out -msse% -mssse%,$(MACHINE_CFLAGS))
87 MACHINE_CFLAGS := $(patsubst -march=core2,-march=generic,$(MACHINE_CFLAGS))
88 MACHINE_CFLAGS += -msse3
90 ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
91 MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
94 # Disable thunderx PMD for gcc < 4.7
95 ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
96 CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d