ring: guarantee load/load order in enqueue and dequeue

[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
index 730b2f6..01ac7e2 100644 (file)
--- a/mk/toolchain/gcc/rte.toolchain-compat.mk
+++ b/mk/toolchain/gcc/rte.toolchain-compat.mk
@@ -1,12 +1,12 @@
 #   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
@@ -16,7 +16,7 @@
 #     * 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
@@ -38,17 +38,17 @@
 
 #find out GCC version
 
-GCC_MAJOR_VERSION = $(shell $(CC) -dumpversion | cut -f1 -d.)
+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 not 4.x
-ifneq ($(GCC_MAJOR_VERSION),4)
+# if GCC is older than 4.x
+ifeq ($(shell test $(GCC_VERSION) -lt 40 && echo 1), 1)
        MACHINE_CFLAGS =
-$(warning You are not using GCC 4.x. This is neither supported, nor tested.)
+$(warning You are using GCC < 4.x. This is neither supported, nor tested.)
 
 
 else
-       GCC_MINOR_VERSION = $(shell $(CC) -dumpversion | cut -f2 -d.)
-
 # GCC graceful degradation
 # GCC 4.2.x - added support for generic target
 # GCC 4.3.x - added support for core2, ssse3, sse4.1, sse4.2
@@ -56,19 +56,24 @@ else
 # GCC 4.5.x - added support for atom
 # GCC 4.6.x - added support for corei7, corei7-avx
 # GCC 4.7.x - added support for fsgsbase, rdrnd, f16c, core-avx-i, core-avx2
-
-       ifeq ($(shell test $(GCC_MINOR_VERSION) -le 7 && echo 1), 1)
+# GCC 4.9.x - added support for armv8-a+crc
+#
+       ifeq ($(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))
+               MACHINE_CFLAGS := $(patsubst -march=armv8-a+crc+crypto,-march=armv8-a+crc+crypto -D__ARM_FEATURE_CRC32=1,$(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 := $(patsubst -march=core-avx2,-march=corei7-avx,$(MACHINE_CFLAGS))
+               MACHINE_CFLAGS := $(patsubst -march=core-avx2,-march=core-avx2,$(MACHINE_CFLAGS))
        endif
-       ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 6 && echo 1), 1)
+       ifeq ($(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 $(GCC_MINOR_VERSION) -lt 5 && echo 1), 1)
+       ifeq ($(shell test $(GCC_VERSION) -lt 45 && echo 1), 1)
                MACHINE_CFLAGS := $(patsubst -march=atom,-march=core2 -mssse3,$(MACHINE_CFLAGS))
        endif
-       ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 4 && echo 1), 1)
+       ifeq ($(shell test $(GCC_VERSION) -lt 44 && echo 1), 1)
                MACHINE_CFLAGS := $(filter-out -mavx -mpclmul -maes,$(MACHINE_CFLAGS))
                ifneq ($(findstring SSE4_2, $(CPUFLAGS)),)
                        MACHINE_CFLAGS += -msse4.2
@@ -77,13 +82,17 @@ else
                        MACHINE_CFLAGS += -msse4.1
                endif
        endif
-       ifeq ($(shell test $(GCC_MINOR_VERSION) -lt 3 && echo 1), 1)
+       ifeq ($(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 $(GCC_MINOR_VERSION) -lt 2 && echo 1), 1)
+       ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
                MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
        endif
-endif
 
+       # Disable thunderx PMD for gcc < 4.7
+       ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
+               CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
+       endif
+endif