/usr/share/dpdk/mk/toolchain/gcc/rte.vars.mk is in dpdk-dev 17.11.1-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# 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.
#
# toolchain:
#
# - define CC, LD, AR, AS, ... (overridden by cmdline value)
# - define TOOLCHAIN_CFLAGS variable (overridden by cmdline value)
# - define TOOLCHAIN_LDFLAGS variable (overridden by cmdline value)
# - define TOOLCHAIN_ASFLAGS variable (overridden by cmdline value)
#
CC = $(CROSS)gcc
KERNELCC = $(CROSS)gcc
CPP = $(CROSS)cpp
# for now, we don't use as but nasm.
# AS = $(CROSS)as
AS = nasm
AR = $(CROSS)ar
LD = $(CROSS)ld
OBJCOPY = $(CROSS)objcopy
OBJDUMP = $(CROSS)objdump
STRIP = $(CROSS)strip
READELF = $(CROSS)readelf
GCOV = $(CROSS)gcov
ifeq ("$(origin CC)", "command line")
HOSTCC = $(CC)
else
HOSTCC = gcc
endif
HOSTAS = as
TOOLCHAIN_ASFLAGS =
TOOLCHAIN_CFLAGS =
TOOLCHAIN_LDFLAGS =
ifeq ($(CONFIG_RTE_LIBRTE_GCOV),y)
TOOLCHAIN_CFLAGS += --coverage
TOOLCHAIN_LDFLAGS += --coverage
ifeq (,$(findstring -O0,$(EXTRA_CFLAGS)))
$(warning "EXTRA_CFLAGS doesn't contains -O0, coverage will be inaccurate with optimizations enabled")
endif
endif
WERROR_FLAGS := -W -Wall -Wstrict-prototypes -Wmissing-prototypes
WERROR_FLAGS += -Wmissing-declarations -Wold-style-definition -Wpointer-arith
WERROR_FLAGS += -Wcast-align -Wnested-externs -Wcast-qual
WERROR_FLAGS += -Wformat-nonliteral -Wformat-security
WERROR_FLAGS += -Wundef -Wwrite-strings
ifeq ($(RTE_DEVEL_BUILD),y)
WERROR_FLAGS += -Werror
endif
# There are many issues reported for strict alignment architectures
# which are not necessarily fatal. Report as warnings.
ifeq ($(CONFIG_RTE_ARCH_STRICT_ALIGN),y)
WERROR_FLAGS += -Wno-error=cast-align
endif
# process cpu flags
include $(RTE_SDK)/mk/toolchain/$(RTE_TOOLCHAIN)/rte.toolchain-compat.mk
# workaround GCC bug with warning "missing initializer" for "= {0}"
ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
WERROR_FLAGS += -Wno-missing-field-initializers
endif
# workaround GCC bug with warning "may be used uninitialized"
ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
WERROR_FLAGS += -Wno-uninitialized
endif
ifeq ($(shell test $(GCC_VERSION) -gt 70 && echo 1), 1)
# Tell GCC only to error for switch fallthroughs without a suitable comment
WERROR_FLAGS += -Wimplicit-fallthrough=2
# Ignore errors for snprintf truncation
WERROR_FLAGS += -Wno-format-truncation
endif
export CC AS AR LD OBJCOPY OBJDUMP STRIP READELF
export TOOLCHAIN_CFLAGS TOOLCHAIN_LDFLAGS TOOLCHAIN_ASFLAGS
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