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.
32 # this makefile is called from the generic rte.vars.mk and is
33 # used to set the RTE_CPUFLAG_* environment variables giving details
34 # of what instruction sets the target cpu supports.
36 AUTO_CPUFLAGS := $(shell $(CC) $(MACHINE_CFLAGS) $(WERROR_FLAGS) $(EXTRA_CFLAGS) -dM -E - < /dev/null)
38 # adding flags to CPUFLAGS
40 ifneq ($(filter $(AUTO_CPUFLAGS),__SSE__),)
44 ifneq ($(filter $(AUTO_CPUFLAGS),__SSE2__),)
48 ifneq ($(filter $(AUTO_CPUFLAGS),__SSE3__),)
52 ifneq ($(filter $(AUTO_CPUFLAGS),__SSSE3__),)
56 ifneq ($(filter $(AUTO_CPUFLAGS),__SSE4_1__),)
60 ifneq ($(filter $(AUTO_CPUFLAGS),__SSE4_2__),)
64 ifneq ($(filter $(AUTO_CPUFLAGS),__AES__),)
68 ifneq ($(filter $(AUTO_CPUFLAGS),__PCLMUL__),)
72 ifneq ($(filter $(AUTO_CPUFLAGS),__AVX__),)
73 ifeq ($(CONFIG_RTE_ENABLE_AVX),y)
78 ifneq ($(filter $(AUTO_CPUFLAGS),__RDRND__),)
82 ifneq ($(filter $(AUTO_CPUFLAGS),__FSGSBASE__),)
86 ifneq ($(filter $(AUTO_CPUFLAGS),__F16C__),)
90 ifneq ($(filter $(AUTO_CPUFLAGS),__AVX2__),)
91 ifeq ($(CONFIG_RTE_ENABLE_AVX),y)
96 ifneq ($(filter $(AUTO_CPUFLAGS),__AVX512F__),)
97 ifeq ($(CONFIG_RTE_ENABLE_AVX512),y)
100 # disable AVX512F support of gcc as a workaround for Bug 97
101 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y)
102 MACHINE_CFLAGS += -mno-avx512f
107 # IBM Power CPU flags
108 ifneq ($(filter $(AUTO_CPUFLAGS),__PPC64__),)
112 ifneq ($(filter $(AUTO_CPUFLAGS),__PPC32__),)
116 ifneq ($(filter $(AUTO_CPUFLAGS),__vector),)
120 ifneq ($(filter $(AUTO_CPUFLAGS),__builtin_vsx_xvnmaddadp),)
125 ifneq ($(filter __ARM_NEON __aarch64__,$(AUTO_CPUFLAGS)),)
129 ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_FEATURE_CRC32),)
134 MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
136 # To strip whitespace
139 space:= $(empty) $(empty)
140 CPUFLAGSTMP1 := $(addprefix RTE_CPUFLAG_,$(CPUFLAGS))
141 CPUFLAGSTMP2 := $(subst $(space),$(comma),$(CPUFLAGSTMP1))
142 CPUFLAGS_LIST := -DRTE_COMPILE_TIME_CPUFLAGS=$(CPUFLAGSTMP2)