Makefile

################################################################################
#
# Copyright 1993-2013 NVIDIA Corporation.  All rights reserved.
#
# NOTICE TO USER:
#
# This source code is subject to NVIDIA ownership rights under U.S. and
# international Copyright laws.
#
# NVIDIA MAKES NO REPRESENTATION ABOUT THE SUITABILITY OF THIS SOURCE
# CODE FOR ANY PURPOSE.  IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR
# IMPLIED WARRANTY OF ANY KIND.  NVIDIA DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOURCE CODE, INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE.
# IN NO EVENT SHALL NVIDIA BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL,
# OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
# OR PERFORMANCE OF THIS SOURCE CODE.
#
# U.S. Government End Users.  This source code is a "commercial item" as
# that term is defined at 48 C.F.R. 2.101 (OCT 1995), consisting  of
# "commercial computer software" and "commercial computer software
# documentation" as such terms are used in 48 C.F.R. 12.212 (SEPT 1995)
# and is provided to the U.S. Government only as a commercial end item.
# Consistent with 48 C.F.R.12.212 and 48 C.F.R. 227.7202-1 through
# 227.7202-4 (JUNE 1995), all U.S. Government End Users acquire the
# source code with only those rights set forth herein.
#
################################################################################
#
# Makefile project only supported on Mac OS X and Linux Platforms)
#
################################################################################

# Location of the CUDA Toolkit
CUDA_PATH       ?= /usr/local/cuda

OSUPPER = $(shell uname -s 2>/dev/null | tr "[:lower:]" "[:upper:]")
OSLOWER = $(shell uname -s 2>/dev/null | tr "[:upper:]" "[:lower:]")

OS_SIZE    = $(shell uname -m | sed -e "s/x86_64/64/" -e "s/armv7l/32/" -e "s/aarch64/64/")
OS_ARCH    = $(shell uname -m)
ARCH_FLAGS =

DARWIN = $(strip $(findstring DARWIN, $(OSUPPER)))
ifneq ($(DARWIN),)
	XCODE_GE_5 = $(shell expr `xcodebuild -version | grep -i xcode | awk '{print $$2}' | cut -d'.' -f1` \>= 5)
endif

	OS_SIZE = 64
	OS_ARCH = x86_64

# Common binaries
ifneq ($(DARWIN),)
ifeq ($(XCODE_GE_5),1)
  GCC ?= clang
else
  GCC ?= g++
endif
else
ifeq ($(ARMv7),1)
  GCC ?= arm-linux-gnueabihf-g++
else
  GCC ?= g++
endif
endif
NVCC := $(CUDA_PATH)/bin/nvcc -ccbin $(GCC)

# internal flags
NVCCFLAGS   := -m${OS_SIZE} ${ARCH_FLAGS}
CCFLAGS     :=
LDFLAGS     :=

# Extra user flags
EXTRA_NVCCFLAGS   ?=
EXTRA_LDFLAGS     ?=
EXTRA_CCFLAGS     ?=

# OS-specific build flags
ifneq ($(DARWIN),)
  LDFLAGS += -rpath $(CUDA_PATH)/lib
  CCFLAGS += -arch $(OS_ARCH)
else
  ifeq ($(OS_ARCH),armv7l)
    ifeq ($(abi),androideabi)
      NVCCFLAGS += -target-os-variant Android
    else
      ifeq ($(abi),gnueabi)
        CCFLAGS += -mfloat-abi=softfp
      else
        # default to gnueabihf
        override abi := gnueabihf
        LDFLAGS += --dynamic-linker=/lib/ld-linux-armhf.so.3
        CCFLAGS += -mfloat-abi=hard
      endif
    endif
  endif
endif

ifeq ($(ARMv7),1)
ifneq ($(TARGET_FS),)
GCCVERSIONLTEQ46 := $(shell expr `$(GCC) -dumpversion` \<= 4.6)
ifeq ($(GCCVERSIONLTEQ46),1)
CCFLAGS += --sysroot=$(TARGET_FS)
endif
LDFLAGS += --sysroot=$(TARGET_FS)
LDFLAGS += -rpath-link=$(TARGET_FS)/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib
LDFLAGS += -rpath-link=$(TARGET_FS)/usr/lib/arm-linux-$(abi)
endif
endif

# Debug build flags
ifeq ($(dbg),1)
      NVCCFLAGS += -g -G
      TARGET := debug
else
      TARGET := release
endif

ALL_CCFLAGS :=
ALL_CCFLAGS += $(NVCCFLAGS)
ALL_CCFLAGS += $(EXTRA_NVCCFLAGS)
ALL_CCFLAGS += $(addprefix -Xcompiler ,$(CCFLAGS))
ALL_CCFLAGS += $(addprefix -Xcompiler ,$(EXTRA_CCFLAGS))

ALL_LDFLAGS :=
ALL_LDFLAGS += $(ALL_CCFLAGS)
ALL_LDFLAGS += $(addprefix -Xlinker ,$(LDFLAGS))
ALL_LDFLAGS += $(addprefix -Xlinker ,$(EXTRA_LDFLAGS))

# Common includes and paths for CUDA
INCLUDES  := -I$(CUDA_PATH)/samples/common/inc
LIBRARIES :=

################################################################################

SAMPLE_ENABLED := 1

SMS ?= 30 35 37 50

ifeq ($(SMS),)
$(info >>> WARNING - no SM architectures have been specified - waiving sample <<<)
SAMPLE_ENABLED := 0
endif

ifeq ($(GENCODE_FLAGS),)
# Generate SASS code for each SM architecture listed in $(SMS)
$(foreach sm,$(SMS),$(eval GENCODE_FLAGS += -gencode arch=compute_$(sm),code=sm_$(sm)))

# Generate PTX code from the highest SM architecture in $(SMS) to guarantee forward-compatibility
HIGHEST_SM := $(lastword $(sort $(SMS)))
ifneq ($(HIGHEST_SM),)
GENCODE_FLAGS += -gencode arch=compute_$(HIGHEST_SM),code=compute_$(HIGHEST_SM)
endif
endif

ifeq ($(SAMPLE_ENABLED),0)
EXEC ?= @echo "[@]"
endif

################################################################################

# Target rules
all: build

build: particles

check.deps:
ifeq ($(SAMPLE_ENABLED),0)
	@echo "Sample will be waived due to the above missing dependencies"
else
	@echo "Sample is ready - all dependencies have been met"
endif

particleSystem.o:particleSystem.cpp
	$(EXEC) $(NVCC) $(INCLUDES) $(ALL_CCFLAGS) $(GENCODE_FLAGS) -o $@ -c $<

particleSystem_cuda.o:particleSystem_cuda.cu
	$(EXEC) $(NVCC) $(INCLUDES) $(ALL_CCFLAGS) $(GENCODE_FLAGS) -o $@ -c $<

particles.o:particles.cpp
	$(EXEC) $(NVCC) $(INCLUDES) $(ALL_CCFLAGS) $(GENCODE_FLAGS) -o $@ -c $<

particles: particleSystem.o particleSystem_cuda.o particles.o
	$(EXEC) $(NVCC) $(ALL_LDFLAGS) $(GENCODE_FLAGS) -o $@ $+ $(LIBRARIES)
	
run: build
	$(EXEC) ./particles

clean:
	rm -rf *~
	rm -f particles particleSystem.o particleSystem_cuda.o particles.o
	rm -rf particles
	rm -rf file0*
	rm -rf *.xyz

clobber: clean