Imported Upstream version 16.04

[deb_dpdk.git] / mk / toolchain / gcc / rte.toolchain-compat.mk

diff --git a/mk/toolchain/gcc/rte.toolchain-compat.mk b/mk/toolchain/gcc/rte.toolchain-compat.mk
new file mode 100644 (file)
index 0000000..6eed20c
--- /dev/null
+++ b/mk/toolchain/gcc/rte.toolchain-compat.mk
@@ -0,0 +1,92 @@
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 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.
+
+#
+# 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 = $(shell echo __GNUC__ | $(CC) -E -x c - | tail -n 1)
+GCC_MINOR = $(shell echo __GNUC_MINOR__ | $(CC) -E -x c - | tail -n 1)
+GCC_VERSION = $(GCC_MAJOR)$(GCC_MINOR)
+
+# if GCC is older than 4.x
+ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
+       MACHINE_CFLAGS =
+$(warning You are using GCC < 4.x. This is neither supported, nor tested.)
+
+
+else
+# 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
+# GCC 4.9.x - added support for armv8-a+crc
+#
+       ifeq ($(shell test $(GCC_VERSION) -le 49 && echo 1), 1)
+               MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc,-march=armv8-a+crc -D__ARM_FEATURE_CRC32=1,$(MACHINE_CFLAGS))
+       endif
+       ifeq ($(shell test $(GCC_VERSION) -le 47 && echo 1), 1)
+               MACHINE_CFLAGS := $(patsubst -march=core-avx-i,-march=corei7-avx,$(MACHINE_CFLAGS))
+               MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
+       endif
+       ifeq ($(shell test $(GCC_VERSION) -lt 46 && 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_VERSION) -lt 45 && echo 1), 1)
+               MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
+       endif
+       ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
+               MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
+               ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
+                       MACHINE_CFLAGS += -msse4.2
+               endif
+               ifneq ($(findstring SSE4_1, $(CPUFLAGS)),)
+                       MACHINE_CFLAGS += -msse4.1
+               endif
+       endif
+       ifeq ($(shell test $(GCC_VERSION) -lt 43 && 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_VERSION) -lt 42 && echo 1), 1)
+               MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
+       endif
+endif