209 lines
6.4 KiB
Makefile
209 lines
6.4 KiB
Makefile
#### PROJECT SETTINGS ####
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# The name of the executable to be created
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BIN_NAME := obj-loader
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# Compiler used
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CXX ?= g++
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# Extension of source files used in the project
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SRC_EXT = cpp
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# Path to the source directory, relative to the makefile
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SRC_PATH = src
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# General compiler flags
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COMPILE_FLAGS = -Wall -Wextra -g -O2
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# Additional release-specific flags
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RCOMPILE_FLAGS = -D NDEBUG
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# Additional debug-specific flags
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DCOMPILE_FLAGS = -D DEBUG
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# Add additional include paths
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INCLUDES = -I $(SRC_PATH)/ -IGL -IGLEW -IGLM -IGLFW
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# General linker settings
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LINK_FLAGS = -lGL -lGLEW -lglfw
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# Additional release-specific linker settings
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RLINK_FLAGS =
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# Additional debug-specific linker settings
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DLINK_FLAGS =
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# Destination directory, like a jail or mounted system
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DESTDIR = /
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# Install path (bin/ is appended automatically)
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INSTALL_PREFIX = usr/local
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#### END PROJECT SETTINGS ####
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## Git repo tagging info from the readme
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#
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# Tags should be made in the format
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# "vMAJOR.MINOR.PATCH[-description]", where MAJOR, MINOR and PATCH are
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# numeric. The following macros will be generated and passed to the
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# preprocessor:
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#
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# VERSION_MAJOR (int) - The major version number from the most recent tag.
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# VERSION_MINOR (int) - The minor version number from the most recent tag.
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# VERSION_PATCH (int) - The patch version number from the most recent tag.
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# VERSION_REVISION (int) - The number of commits since the most recent tag.
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# VERSION_HASH (string) - The SHA of the current commit. Includes
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# the "-dirty" suffix if there are uncommited changes.
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#
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# If the makefile is not used in a git repository, or is in a
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# repository with no tags, the version macros are not created.
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##
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# Generally should not need to edit below this line
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# Shell used in this makefile
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# bash is used for 'echo -en'
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SHELL = /bin/bash
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# Clear built-in rules
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.SUFFIXES:
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# Programs for installation
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INSTALL = install
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INSTALL_PROGRAM = $(INSTALL)
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INSTALL_DATA = $(INSTALL) -m 644
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# Verbose option, to output compile and link commands
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export V := false
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export CMD_PREFIX := @
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ifeq ($(V),true)
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CMD_PREFIX :=
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endif
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# Combine compiler and linker flags
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release: export CXXFLAGS := $(CXXFLAGS) $(COMPILE_FLAGS) $(RCOMPILE_FLAGS)
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release: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(RLINK_FLAGS)
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debug: export CXXFLAGS := $(CXXFLAGS) $(COMPILE_FLAGS) $(DCOMPILE_FLAGS)
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debug: export LDFLAGS := $(LDFLAGS) $(LINK_FLAGS) $(DLINK_FLAGS)
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# Build and output paths
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release: export BUILD_PATH := build/release
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release: export BIN_PATH := bin/release
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debug: export BUILD_PATH := build/debug
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debug: export BIN_PATH := bin/debug
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install: export BIN_PATH := bin/release
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# Find all source files in the source directory, sorted by most
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# recently modified
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SOURCES = $(shell find $(SRC_PATH)/ -name '*.$(SRC_EXT)' -printf '%T@\t%p\n' \
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| sort -k 1nr | cut -f2-)
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# fallback in case the above fails
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rwildcard = $(foreach d, $(wildcard $1*), $(call rwildcard,$d/,$2) \
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$(filter $(subst *,%,$2), $d))
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ifeq ($(SOURCES),)
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SOURCES := $(call rwildcard, $(SRC_PATH)/, *.$(SRC_EXT))
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endif
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# Set the object file names, with the source directory stripped
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# from the path, and the build path prepended in its place
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OBJECTS = $(SOURCES:$(SRC_PATH)/%.$(SRC_EXT)=$(BUILD_PATH)/%.o)
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# Set the dependency files that will be used to add header dependencies
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DEPS = $(OBJECTS:.o=.d)
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# Macros for timing compilation
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TIME_FILE = $(dir $@).$(notdir $@)_time
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START_TIME = date '+%s' > $(TIME_FILE)
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END_TIME = read st < $(TIME_FILE) ; \
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$(RM) $(TIME_FILE) ; \
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st=$$((`date '+%s'` - $$st - 86400)) ; \
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echo `date -u -d @$$st '+%H:%M:%S'`
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# Version macros
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# Comment/remove this section to remove versioning
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USE_VERSION := false
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# If this isn't a git repo or the repo has no tags, git describe will return non-zero
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ifeq ($(shell git describe > /dev/null 2>&1 ; echo $$?), 0)
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USE_VERSION := true
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VERSION := $(shell git describe --tags --long --dirty --always | \
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sed 's/v\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)-\?.*-\([0-9]*\)-\(.*\)/\1 \2 \3 \4 \5/g')
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VERSION_MAJOR := $(word 1, $(VERSION))
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VERSION_MINOR := $(word 2, $(VERSION))
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VERSION_PATCH := $(word 3, $(VERSION))
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VERSION_REVISION := $(word 4, $(VERSION))
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VERSION_HASH := $(word 5, $(VERSION))
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VERSION_STRING := \
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"$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH).$(VERSION_REVISION)-$(VERSION_HASH)"
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override CXXFLAGS := $(CXXFLAGS) \
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-D VERSION_MAJOR=$(VERSION_MAJOR) \
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-D VERSION_MINOR=$(VERSION_MINOR) \
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-D VERSION_PATCH=$(VERSION_PATCH) \
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-D VERSION_REVISION=$(VERSION_REVISION) \
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-D VERSION_HASH=\"$(VERSION_HASH)\"
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endif
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# Standard, non-optimized release build
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.PHONY: release
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release: dirs
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ifeq ($(USE_VERSION), true)
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@echo "Beginning release build v$(VERSION_STRING)"
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else
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@echo "Beginning release build"
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endif
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@$(START_TIME)
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@$(MAKE) all --no-print-directory
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@echo -n "Total build time: "
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@$(END_TIME)
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# Debug build for gdb debugging
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.PHONY: debug
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debug: dirs
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ifeq ($(USE_VERSION), true)
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@echo "Beginning debug build v$(VERSION_STRING)"
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else
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@echo "Beginning debug build"
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endif
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@$(START_TIME)
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@$(MAKE) all --no-print-directory
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@echo -n "Total build time: "
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@$(END_TIME)
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# Create the directories used in the build
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.PHONY: dirs
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dirs:
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@echo "Creating directories"
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@mkdir -p $(dir $(OBJECTS))
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@mkdir -p $(BIN_PATH)
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# Installs to the set path
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.PHONY: install
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install:
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@echo "Installing to $(DESTDIR)$(INSTALL_PREFIX)/bin"
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@$(INSTALL_PROGRAM) $(BIN_PATH)/$(BIN_NAME) $(DESTDIR)$(INSTALL_PREFIX)/bin
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# Uninstalls the program
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.PHONY: uninstall
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uninstall:
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@echo "Removing $(DESTDIR)$(INSTALL_PREFIX)/bin/$(BIN_NAME)"
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@$(RM) $(DESTDIR)$(INSTALL_PREFIX)/bin/$(BIN_NAME)
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# Removes all build files
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.PHONY: clean
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clean:
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@echo "Deleting $(BIN_NAME) symlink"
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@$(RM) $(BIN_NAME)
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@echo "Deleting directories"
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@$(RM) -r build
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@$(RM) -r bin
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# Main rule, checks the executable and symlinks to the output
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all: $(BIN_PATH)/$(BIN_NAME)
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@echo "Making symlink: $(BIN_NAME) -> $<"
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@$(RM) $(BIN_NAME)
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@ln -s $(BIN_PATH)/$(BIN_NAME) $(BIN_NAME)
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# Link the executable
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$(BIN_PATH)/$(BIN_NAME): $(OBJECTS)
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@echo "Linking: $@"
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@$(START_TIME)
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$(CMD_PREFIX)$(CXX) $(OBJECTS) $(LDFLAGS) -o $@
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@echo -en "\t Link time: "
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@$(END_TIME)
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# Add dependency files, if they exist
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-include $(DEPS)
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# Source file rules
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# After the first compilation they will be joined with the rules from the
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# dependency files to provide header dependencies
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$(BUILD_PATH)/%.o: $(SRC_PATH)/%.$(SRC_EXT)
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@echo "Compiling: $< -> $@"
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@$(START_TIME)
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$(CMD_PREFIX)$(CXX) $(CXXFLAGS) $(INCLUDES) -MP -MMD -c $< -o $@
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@echo -en "\t Compile time: "
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@$(END_TIME)
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