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### Adapted from https://github.com/fboulnois/modern-makefile
### Settings: Modify the parameters below to configure your project
###============================================================================
# program name and source directories
BIN_NAME :=
SRC_DIRS :=
# enable debug build
DEBUG = 1
# general program flags
ifdef DEBUG
MY_CFLAGS = -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -g -fsanitize=address,undefined
else
MY_CFLAGS = -O3
endif
MY_LIBS =
WARNINGS = -fstack-protector-strong -fpie -pedantic -Wall -Wextra
# language specific options
CFLAGS = -std=c11
CXXFLAGS = -std=c++11
# compiler defaults
CC = gcc
CXX = g++
# static analysis / formatting tools
CFORMAT = clang-format
CTIDY = clang-tidy
### Advanced: You should generally not need to modify anything below this line
###============================================================================
## If no source dirs are specified use files in current working directory
##-----------------------------------------------------------------------------
ifeq ($(SRC_DIRS),)
SRC_DIRS := .
endif
## Check if the software being built is a shared library
##-----------------------------------------------------------------------------
BIN_SHARED := $(filter -shared,$(MY_CFLAGS))
## If no program name is specified use current directory name or a.out
##-----------------------------------------------------------------------------
EMPTY :=
SPACE := $(EMPTY) $(EMPTY)
ifeq ($(BIN_NAME),)
BIN_NAME := $(lastword $(subst /,$(SPACE),$(subst $(SPACE),_,$(CURDIR))))
ifneq ($(BIN_SHARED),)
BIN_NAME := $(addsuffix .so,$(addprefix lib,$(BIN_NAME)))
endif
endif
ifeq ($(BIN_NAME),)
BIN_NAME := a.out
endif
## Find source files in specified directories and name objects and dependencies
##-----------------------------------------------------------------------------
SRC_EXTS := .c .C .cc .cp .cpp .CPP .cxx .c++
SRC_FILES := $(foreach dir,$(SRC_DIRS),$(wildcard $(addprefix $(dir)/*,$(SRC_EXTS))))
SRC_CXX := $(filter-out %.c,$(SRC_FILES))
OBJECTS := $(addsuffix .o,$(basename $(SRC_FILES)))
DEPENDS := $(OBJECTS:.o=.d)
## Compiler and linker related actions
##-----------------------------------------------------------------------------
CMP_C := $(CC) $(MY_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(WARNINGS) -MD
LNK_C := $(CC) $(MY_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
CMP_CXX := $(CXX) $(MY_CFLAGS) $(CXXFLAGS) $(CPPFLAGS) $(WARNINGS) -MD
LNK_CXX := $(CXX) $(MY_CFLAGS) $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS)
## Clear built-in .SUFFIXES and set .PHONY targets
##-----------------------------------------------------------------------------
.SUFFIXES:
.PHONY: all check clean format objects
## Debug values of makefile variables, to check use 'make print-VARNAME'
##-----------------------------------------------------------------------------
print-%: ; @echo $*=$($*)
## Build everything
##-----------------------------------------------------------------------------
all: $(if $(DEBUG), format check) $(BIN_NAME)
## Static analysis
##-----------------------------------------------------------------------------
check: $(SRC_FILES)
$(CTIDY) $(CPPFLAGS) $(SRC_FILES)
## Formatting
##-----------------------------------------------------------------------------
format: $(SRC_FILES)
$(CFORMAT) -i $(SRC_FILES)
## Clean up build
##-----------------------------------------------------------------------------
clean:
$(RM) $(DEPENDS) $(OBJECTS) $(BIN_NAME) $(BIN_NAME).exe
## Build object files
##-----------------------------------------------------------------------------
objects: $(OBJECTS)
%.o: %.c
$(CMP_C) -c $< -o $@
%.o: %.C
$(CMP_CXX) -c $< -o $@
%.o: %.cc
$(CMP_CXX) -c $< -o $@
%.o: %.cp
$(CMP_CXX) -c $< -o $@
%.o: %.cpp
$(CMP_CXX) -c $< -o $@
%.o: %.CPP
$(CMP_CXX) -c $< -o $@
%.o: %.cxx
$(CMP_CXX) -c $< -o $@
%.o: %.c++
$(CMP_CXX) -c $< -o $@
## Build dependencies
##-----------------------------------------------------------------------------
-include $(DEPENDS)
## Build executable
##-----------------------------------------------------------------------------
$(BIN_NAME): $(OBJECTS)
ifeq ($(SRC_CXX),)
$(LNK_C) $(OBJECTS) $(MY_LIBS) -o $@
else
$(LNK_CXX) $(OBJECTS) $(MY_LIBS) -o $@
endif
ifeq ($(BIN_SHARED),)
@echo To execute program, type ./$@
else
@echo To link shared library, use $@
endif
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