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-rw-r--r--mk/toolchain/gcc/rte.toolchain-compat.mk93
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diff --git a/mk/toolchain/gcc/rte.toolchain-compat.mk b/mk/toolchain/gcc/rte.toolchain-compat.mk
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+# BSD LICENSE
+#
+# Copyright(c) 2010-2012 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Intel Corporation nor the names of its
+# contributors may be used to endorse or promote products derived
+# from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# version: DPDK.L.1.2.3-3
+
+#
+# CPUID-related options
+#
+# This was added to support compiler versions which might not support all the
+# flags we need
+#
+
+#find out GCC version
+
+GCC_MAJOR_VERSION = $(shell gcc -dumpversion | cut -f1 -d.)
+
+# if GCC is not 4.x
+ifneq ($(GCC_MAJOR_VERSION),4)
+ MACHINE_CFLAGS =
+$(warning You are not using GCC 4.x. This is neither supported, nor tested.)
+
+
+else
+ GCC_MINOR_VERSION = $(shell gcc -dumpversion | cut -f2 -d.)
+
+# GCC graceful degradation
+# GCC 4.2.x - added support for generic target
+# GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
+# GCC 4.4.x - added support for avx, aes, pclmul
+# GCC 4.5.x - added support for atom
+# GCC 4.6.x - added support for corei7, corei7-avx
+# GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
+
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 7 && echo 1), 1)
+ MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
+ MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=corei7-avx,$(MACHINE_CFLAGS))
+ endif
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 6 && echo 1), 1)
+ MACHINE_CFLAGS := $(patsubst -march=corei7-avx,-march=core2 -maes -mpclmul -mavx,$(MACHINE_CFLAGS))
+ MACHINE_CFLAGS := $(patsubst -march=corei7,-march=core2 -maes -mpclmul,$(MACHINE_CFLAGS))
+ endif
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 5 && echo 1), 1)
+ MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
+ endif
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 4 && echo 1), 1)
+ MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
+ endif
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 3 && echo 1), 1)
+ MACHINE_CFLAGS := $(filter-out -msse% -mssse%,$(MACHINE_CFLAGS))
+ MACHINE_CFLAGS := $(patsubst -march=core2,-march=generic,$(MACHINE_CFLAGS))
+ MACHINE_CFLAGS += -msse3
+ endif
+ ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 2 && echo 1), 1)
+ MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
+ endif
+endif
+MACHINE_CFLAGS += $(addprefix -DRTE_MACHINE_CPUFLAG_,$(CPUFLAGS))
+
+# To strip whitespace
+comma:= ,
+empty:=
+space:= $(empty) $(empty)
+CPUFLAGSTMP1 := $(addprefix RTE_CPUFLAG_,$(CPUFLAGS))
+CPUFLAGSTMP2 := $(subst $(space),$(comma),$(CPUFLAGSTMP1))
+MACHINE_CFLAGS += -DRTE_COMPILE_TIME_CPUFLAGS=$(CPUFLAGSTMP2)