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Makefile
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Makefile
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# The MIT License (MIT)
#
# Copyright (c) 2014 Michael Crawford
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#### PROJECT SETTINGS ####
# The name of the executable to be created
BIN_NAME := main
# Compiler used
CXX ?= g++
# Extension of source files used in the project
SRC_EXT = cpp
# Path to the source directory, relative to the makefile
SRC_PATH = src
INC_PATH = headers
# General compiler flags
COMPILE_FLAGS = -std=c++0x -Wall -Wextra -g
# Additional release-specific flags
RCOMPILE_FLAGS = -D NDEBUG -O3
# Additional debug-specific flags
DCOMPILE_FLAGS = -D DEBUG
# Add additional include paths
INCLUDES = -I $(INC_PATH)/
# General linker settings
LINK_FLAGS = -lsfml-system -lsfml-graphics -lsfml-window -lsfml-audio -lGL
# Additional release-specific linker settings
RLINK_FLAGS = -O3
# Additional debug-specific linker settings
DLINK_FLAGS =
# Destination directory, like a jail or mounted system
DESTDIR = /
# Install path (bin/ is appended automatically)
INSTALL_PREFIX = usr/local
#### END PROJECT SETTINGS ####
# Generally should not need to edit below this line
# Shell used in this makefile
# bash is used for 'echo -en'
SHELL = /bin/bash
# Clear built-in rules
.SUFFIXES:
# Programs for installation
INSTALL = install
INSTALL_PROGRAM = $(INSTALL)
INSTALL_DATA = $(INSTALL) -m 644
# Verbose option, to output compile and link commands
export V := false
export CMD_PREFIX := @
ifeq ($(V),true)
CMD_PREFIX :=
endif
# Combine compiler and linker flags
release: export CXXFLAGS := $(CXXFLAGS) $(COMPILE_FLAGS) $(RCOMPILE_FLAGS)
release: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(RLINK_FLAGS)
debug: export CXXFLAGS := $(CXXFLAGS) $(COMPILE_FLAGS) $(DCOMPILE_FLAGS)
debug: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(DLINK_FLAGS)
# Build and output paths
release: export BUILD_PATH := build/release
release: export BIN_PATH := bin/release
debug: export BUILD_PATH := build/debug
debug: export BIN_PATH := bin/debug
install: export BIN_PATH := bin/release
# Find all source files in the source directory, sorted by most
# recently modified
SOURCES = $(shell find $(SRC_PATH)/ -name '*.$(SRC_EXT)' -printf '%T@\t%p\n' \
| sort -k 1nr | cut -f2-)
# fallback in case the above fails
rwildcard = $(foreach d, $(wildcard $1*), $(call rwildcard,$d/,$2) \
$(filter $(subst *,%,$2), $d))
ifeq ($(SOURCES),)
SOURCES := $(call rwildcard, $(SRC_PATH)/, *.$(SRC_EXT))
endif
# Set the object file names, with the source directory stripped
# from the path, and the build path prepended in its place
OBJECTS = $(SOURCES:$(SRC_PATH)/%.$(SRC_EXT)=$(BUILD_PATH)/%.o)
# Set the dependency files that will be used to add header dependencies
DEPS = $(OBJECTS:.o=.d)
# Macros for timing compilation
TIME_FILE = $(dir $@).$(notdir $@)_time
START_TIME = date '+%s' > $(TIME_FILE)
END_TIME = read st < $(TIME_FILE) ; \
$(RM) $(TIME_FILE) ; \
st=$$((`date '+%s'` - $$st - 86400)) ; \
echo `date -u -d @$$st '+%H:%M:%S'`
# Version macros
# Comment/remove this section to remove versioning
USE_VERSION := false
# If this isn't a git repo or the repo has no tags, git describe will return non-zero
ifeq ($(shell git describe > /dev/null 2>&1 ; echo $$?), 0)
USE_VERSION := true
VERSION := $(shell git describe --tags --long --dirty --always | \
sed 's/v\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)-\?.*-\([0-9]*\)-\(.*\)/\1 \2 \3 \4 \5/g')
VERSION_MAJOR := $(word 1, $(VERSION))
VERSION_MINOR := $(word 2, $(VERSION))
VERSION_PATCH := $(word 3, $(VERSION))
VERSION_REVISION := $(word 4, $(VERSION))
VERSION_HASH := $(word 5, $(VERSION))
VERSION_STRING := \
"$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH).$(VERSION_REVISION)-$(VERSION_HASH)"
override CXXFLAGS := $(CXXFLAGS) \
-D VERSION_MAJOR=$(VERSION_MAJOR) \
-D VERSION_MINOR=$(VERSION_MINOR) \
-D VERSION_PATCH=$(VERSION_PATCH) \
-D VERSION_REVISION=$(VERSION_REVISION) \
-D VERSION_HASH=\"$(VERSION_HASH)\"
endif
# Standard, non-optimized release build
.PHONY: release
release: dirs
ifeq ($(USE_VERSION), true)
@echo "Beginning release build v$(VERSION_STRING)"
else
@echo "Beginning release build"
endif
@$(START_TIME)
@$(MAKE) all --no-print-directory
@echo -n "Total build time: "
@$(END_TIME)
# Debug build for gdb debugging
.PHONY: debug
debug: dirs
ifeq ($(USE_VERSION), true)
@echo "Beginning debug build v$(VERSION_STRING)"
else
@echo "Beginning debug build"
endif
@$(START_TIME)
@$(MAKE) all --no-print-directory
@echo -n "Total build time: "
@$(END_TIME)
# Create the directories used in the build
.PHONY: dirs
dirs:
@echo "Creating directories"
@mkdir -p $(dir $(OBJECTS))
@mkdir -p $(BIN_PATH)
# Installs to the set path
.PHONY: install
install:
@echo "Installing to $(DESTDIR)$(INSTALL_PREFIX)/bin"
@$(INSTALL_PROGRAM) $(BIN_PATH)/$(BIN_NAME) $(DESTDIR)$(INSTALL_PREFIX)/bin
# Uninstalls the program
.PHONY: uninstall
uninstall:
@echo "Removing $(DESTDIR)$(INSTALL_PREFIX)/bin/$(BIN_NAME)"
@$(RM) $(DESTDIR)$(INSTALL_PREFIX)/bin/$(BIN_NAME)
# Removes all build files
.PHONY: clean
clean:
@echo "Deleting $(BIN_NAME) symlink"
@$(RM) $(BIN_NAME)
@echo "Deleting directories"
@$(RM) -r build
@$(RM) -r bin
# Main rule, checks the executable and symlinks to the output
all: $(BIN_PATH)/$(BIN_NAME)
@echo "Making symlink: $(BIN_NAME) -> $<"
@$(RM) $(BIN_NAME)
@ln -s $(BIN_PATH)/$(BIN_NAME) $(BIN_NAME)
# Link the executable
$(BIN_PATH)/$(BIN_NAME): $(OBJECTS)
@echo "Linking: $@"
@$(START_TIME)
$(CMD_PREFIX)$(CXX) $(OBJECTS) $(LDFLAGS) -o $@
@echo -en "\t Link time: "
@$(END_TIME)
# Add dependency files, if they exist
-include $(DEPS)
# Source file rules
# After the first compilation they will be joined with the rules from the
# dependency files to provide header dependencies
$(BUILD_PATH)/%.o: $(SRC_PATH)/%.$(SRC_EXT)
@echo "Compiling: $< -> $@"
@$(START_TIME)
$(CMD_PREFIX)$(CXX) $(CXXFLAGS) $(INCLUDES) -MP -MMD -c $< -o $@
@echo -en "\t Compile time: "
@$(END_TIME)