e2e3997c32
The GCC 4.9 -march option supports the intel code names for processors, for example -march=silvermont, -march=broadwell. The RTE_MACHINE config flag can be used to pass code name to the compiler as -march flag. Release notes is updated. Linux and FreeBSD getting started guides are updated with recommended gcc version as 4.9 and above. Some of the gmake command examples in sample application guide and driver guides are updated with gcc version as 4.9. Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
149 lines
5.5 KiB
Makefile
149 lines
5.5 KiB
Makefile
# BSD LICENSE
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#
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# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Intel Corporation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# This .mk is the generic target rte.var.mk ; it includes .mk for
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# the specified machine, architecture, toolchain (compiler) and
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# executive environment.
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#
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#
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# machine:
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#
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# - can define ARCH variable (overriden by cmdline value)
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# - can define CROSS variable (overriden by cmdline value)
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# - define MACHINE_CFLAGS variable (overriden by cmdline value)
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# - define MACHINE_LDFLAGS variable (overriden by cmdline value)
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# - define MACHINE_ASFLAGS variable (overriden by cmdline value)
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# - can define CPU_CFLAGS variable (overriden by cmdline value) that
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# overrides the one defined in arch.
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# - can define CPU_LDFLAGS variable (overriden by cmdline value) that
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# overrides the one defined in arch.
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# - can define CPU_ASFLAGS variable (overriden by cmdline value) that
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# overrides the one defined in arch.
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#
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ifneq ($(wildcard $(RTE_SDK)/mk/machine/$(RTE_MACHINE)/rte.vars.mk),)
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include $(RTE_SDK)/mk/machine/$(RTE_MACHINE)/rte.vars.mk
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else
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MACHINE_CFLAGS := -march=$(RTE_MACHINE)
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endif
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#
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# arch:
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#
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# - define ARCH variable (overriden by cmdline or by previous
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# optional define in machine .mk)
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# - define CROSS variable (overriden by cmdline or previous define
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# in machine .mk)
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# - define CPU_CFLAGS variable (overriden by cmdline or previous
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# define in machine .mk)
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# - define CPU_LDFLAGS variable (overriden by cmdline or previous
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# define in machine .mk)
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# - define CPU_ASFLAGS variable (overriden by cmdline or previous
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# define in machine .mk)
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# - may override any previously defined variable
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#
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include $(RTE_SDK)/mk/arch/$(RTE_ARCH)/rte.vars.mk
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#
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# toolchain:
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#
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# - define CC, LD, AR, AS, ...
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# - define TOOLCHAIN_CFLAGS variable (overriden by cmdline value)
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# - define TOOLCHAIN_LDFLAGS variable (overriden by cmdline value)
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# - define TOOLCHAIN_ASFLAGS variable (overriden by cmdline value)
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# - may override any previously defined variable
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#
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include $(RTE_SDK)/mk/toolchain/$(RTE_TOOLCHAIN)/rte.vars.mk
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#
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# exec-env:
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#
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# - define EXECENV_CFLAGS variable (overriden by cmdline)
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# - define EXECENV_LDFLAGS variable (overriden by cmdline)
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# - define EXECENV_ASFLAGS variable (overriden by cmdline)
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# - may override any previously defined variable
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#
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include $(RTE_SDK)/mk/exec-env/$(RTE_EXEC_ENV)/rte.vars.mk
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# Don't set CFLAGS/LDFLAGS flags for kernel module, all flags are
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# provided by Kbuild framework.
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ifeq ($(KERNELRELEASE),)
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# now that the environment is mostly set up, including the machine type we will
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# be passing to the compiler, set up the specific CPU flags based on that info.
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include $(RTE_SDK)/mk/rte.cpuflags.mk
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# merge all CFLAGS
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CFLAGS := $(CPU_CFLAGS) $(EXECENV_CFLAGS) $(TOOLCHAIN_CFLAGS) $(MACHINE_CFLAGS)
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CFLAGS += $(TARGET_CFLAGS)
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# merge all LDFLAGS
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LDFLAGS := $(CPU_LDFLAGS) $(EXECENV_LDFLAGS) $(TOOLCHAIN_LDFLAGS) $(MACHINE_LDFLAGS)
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LDFLAGS += $(TARGET_LDFLAGS)
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# merge all ASFLAGS
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ASFLAGS := $(CPU_ASFLAGS) $(EXECENV_ASFLAGS) $(TOOLCHAIN_ASFLAGS) $(MACHINE_ASFLAGS)
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ASFLAGS += $(TARGET_ASFLAGS)
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# add default include and lib paths
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CFLAGS += -I$(RTE_OUTPUT)/include
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LDFLAGS += -L$(RTE_OUTPUT)/lib
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# always include rte_config.h: the one in $(RTE_OUTPUT)/include is
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# the configuration of SDK when $(BUILDING_RTE_SDK) is true, or the
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# configuration of the application if $(BUILDING_RTE_SDK) is not
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# defined.
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ifeq ($(BUILDING_RTE_SDK),1)
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# building sdk
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CFLAGS += -include $(RTE_OUTPUT)/include/rte_config.h
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ifeq ($(CONFIG_RTE_INSECURE_FUNCTION_WARNING),y)
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CFLAGS += -include rte_warnings.h
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endif
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else
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# if we are building an external application, include SDK's lib and
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# includes too
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CFLAGS += -I$(RTE_SDK_BIN)/include
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ifneq ($(wildcard $(RTE_OUTPUT)/include/rte_config.h),)
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CFLAGS += -include $(RTE_OUTPUT)/include/rte_config.h
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endif
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CFLAGS += -include $(RTE_SDK_BIN)/include/rte_config.h
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ifeq ($(CONFIG_RTE_INSECURE_FUNCTION_WARNING),y)
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CFLAGS += -include rte_warnings.h
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endif
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LDFLAGS += -L$(RTE_SDK_BIN)/lib
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endif
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export CFLAGS
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export LDFLAGS
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endif
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