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 $(AUTO_CPUFLAGS),__AVX__),)
76 ifneq ($(filter $(AUTO_CPUFLAGS),__RDRND__),)
80 ifneq ($(filter $(AUTO_CPUFLAGS),__FSGSBASE__),)
84 ifneq ($(filter $(AUTO_CPUFLAGS),__F16C__),)
88 ifneq ($(filter $(AUTO_CPUFLAGS),__AVX2__),)
92 ifneq ($(filter $(AUTO_CPUFLAGS),__AVX512F__),)
97 ifneq ($(filter $(AUTO_CPUFLAGS),__PPC64__),)
101 ifneq ($(filter $(AUTO_CPUFLAGS),__PPC32__),)
105 ifneq ($(filter $(AUTO_CPUFLAGS),__vector),)
109 ifneq ($(filter $(AUTO_CPUFLAGS),__builtin_vsx_xvnmaddadp),)
114 ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_NEON),)
118 ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_FEATURE_CRC32),)
123 MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
125 # To strip whitespace
128 space:= $(empty) $(empty)
129 CPUFLAGSTMP1 := $(addprefix RTE_CPUFLAG_,$(CPUFLAGS))
130 CPUFLAGSTMP2 := $(subst $(space),$(comma),$(CPUFLAGSTMP1))
131 CPUFLAGS_LIST := -DRTE_COMPILE_TIME_CPUFLAGS=$(CPUFLAGSTMP2)