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Makefile
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Makefile
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# Select compiler command depending on environment
OS:=$(shell uname)
CXX=$(shell root-config --cxx)
ifeq ($(OS),Darwin)
CXX=clang++
endif
# Variables for compiling and linking
CXXFLAGS=$(shell root-config --cflags) -fPIC
LDFLAGS=$(shell root-config --ldflags)
LIBS=$(shell root-config --glibs --evelibs)
INCDIR=$(shell root-config --incdir)
# Define variables for directories
SRC_DIR=src
OBJ_DIR=build
BIN_DIR=dist
#BIN_DIR=.
# Set the name of your executable
APP_NAME=calodisplay
# Set variables with dictionary .cxx and .pcm filenames
DICT_CXX_FILENAME=$(APP_NAME)-dictionary.cxx # app-dictionary.cxx
DICT_PCM_FILENAME=$(APP_NAME)-dictionary_rdict.pcm # app-dictionary_rdict.pcm
# Shared library and its debug symbols filenames
SHARED_LIBRARY=$(APP_NAME)-library.so # app-library.so
SHARED_LIBRARY_DS=$(APP_NAME)-library.so.dSYM # app-library.so.dSYM
# Binary executable file names with path
EXECUTABLE=$(BIN_DIR)/$(APP_NAME) # dist/app
EXECUTABLE_LOCAL=$(BIN_DIR)/$(APP_NAME)-local # dist/app-local
# Define list of header files (.h), source files (.cpp) and object files (.o)
H_EXT = h
HEADERS = $(shell find $(SRC_DIR) -type f -name "*.$(H_EXT)")
HEADERS := $(filter-out $(SRC_DIR)/LinkDef.h,$(HEADERS))
SRC_EXT = cpp
SOURCES = $(shell find $(SRC_DIR) -type f -name "*.$(SRC_EXT)")
OBJECTS_TEMP = $(SOURCES:.cpp=.o)
OBJECTS = $(patsubst $(SRC_DIR)/%,$(OBJ_DIR)/%,$(OBJECTS_TEMP))
# Convenience variable for creating new directories
dir_guard=@mkdir -p $(@D)
# Path for installing the shared library and dictionary .pcm
# Tip: macOS system integrity protection blocks access to $(DYLD_LIBRARY_PATH)
# so instead we use $(ROOTSYS)/lib
# https://github.com/nteract/nteract/issues/1523#issuecomment-284027093
DYNAMIC_LIBRARY_PATH = $(ROOTSYS)/lib
# Path for installing the executable binary
# https://stackoverflow.com/questions/39892692/how-to-implement-make-install-in-a-makefile
ifeq ($(PREFIX),)
PREFIX := /usr/local
endif
# Default target builds production executable
all: production
# Add -O3 optimization level for the production release
production: CXXFLAGS+=-O3
production: directories $(DICT_CXX_FILENAME) $(SHARED_LIBRARY) $(OBJECTS) $(EXECUTABLE) move_files
#production: directories $(DICT_CXX_FILENAME) $(SHARED_LIBRARY) $(OBJECTS) $(EXECUTABLE)
# Add -O3 optimization level for the test release
release: CXXFLAGS+=-O3
release: directories $(DICT_CXX_FILENAME) $(SHARED_LIBRARY) $(OBJECTS) $(EXECUTABLE_LOCAL) move_files
# Also might add flags for debug optimizations: -Og -ggdb -DDEBUG
debug: CXXFLAGS+=-g
debug: directories $(DICT_CXX_FILENAME) $(SHARED_LIBRARY) $(OBJECTS) $(EXECUTABLE_LOCAL) move_files move_debug_symbols
# Target for dictionary generation (creates .cxx and .pcm)
$(DICT_CXX_FILENAME): $(HEADERS) $(SRC_DIR)/LinkDef.h
rootcling -f $@ $^
# Target for compiling the shared library
# Official ROOT docs are missing $(LIBS) parameter https://root.cern.ch/interacting-shared-libraries-rootcling
$(SHARED_LIBRARY): $(DICT_CXX_FILENAME) $(SOURCES)
$(CXX) -shared -o $@ $(LDFLAGS) $(CXXFLAGS) $(LIBS) $^
# $(CXX) -shared -o $@ $(LDFLAGS) $(CXXFLAGS) -I$(INCDIR) $^
# Target for compiling the object files
$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
$(dir_guard)
@echo "Compiling "$@
# compile with dependency files - why?
# $(CXX) $(CXXFLAGS) -c -g -MMD -MP -MF "[email protected]" -o $@ $<
# compile with debug symbols
# $(CXX) $(CXXFLAGS) -c -g $< -o $@
# just compile
$(CXX) -c $(CXXFLAGS) $< -o $@
# Target for linking the production executable
$(EXECUTABLE): $(OBJECTS) $(SHARED_LIBRARY)
@echo "Linking "$@
$(CXX) -o $@ $(OBJECTS) $(SHARED_LIBRARY) $(LIBS)
# Target for linking the test release and development executable
# We assign relative .so search path (./) to the executable
$(EXECUTABLE_LOCAL):
ifeq ($(OS),Darwin)
# for macOS just link against the shared library
$(CXX) -o $@ $(OBJECTS) $(SHARED_LIBRARY) $(LIBS)
# then change search location of the .so library in the executable - set as same directory
install_name_tool -change $(SHARED_LIBRARY) @executable_path/$(SHARED_LIBRARY) $(EXECUTABLE_LOCAL)
else
# for Linux add runtime shared library search path ./ relative to the executable
# https://stackoverflow.com/questions/38058041/correct-usage-of-rpath-relative-vs-absolute
$(CXX) -o $@ $(OBJECTS) $(SHARED_LIBRARY) $(LIBS) -Wl,-rpath,'$$ORIGIN'
endif
# Target moves .so and .pcm files to ./dist
move_files:
# move .so library to ./dist folder
mv $(SHARED_LIBRARY) $(BIN_DIR)/$(SHARED_LIBRARY)
# move dictionary .pcm to ./dist folder, remove dictionary .cxx
mv $(DICT_PCM_FILENAME) $(BIN_DIR)/$(DICT_PCM_FILENAME)
# remove dictionary .cxx code (don't need it anymore)
rm $(DICT_CXX_FILENAME)
# Target moves .so.dSYM debug symbols to /dist folder
move_debug_symbols:
ifeq ($(OS),Darwin)
mv $(SHARED_LIBRARY_DS) $(BIN_DIR)/$(SHARED_LIBRARY_DS)
endif
# Target installs the executable and moves shared library to $ROOTSYS/lib
install:
# run 'make install' or 'sudo -E make install' to preserve user environment
sudo install -m 755 $(EXECUTABLE) $(DESTDIR)$(PREFIX)/bin/
sudo install -m 755 $(BIN_DIR)/$(SHARED_LIBRARY) $(DYNAMIC_LIBRARY_PATH)/
sudo install -m 755 $(BIN_DIR)/$(DICT_PCM_FILENAME) $(DYNAMIC_LIBRARY_PATH)/
# Target to copy the application icon and create the launcher on Linux
#install-linux-launcher:
# xdg-icon-resource install --context apps --size 128 ./resources/$(APP_NAME).png $(APP_NAME)
# xdg-desktop-menu install ./resources/$(APP_NAME).desktop
# Target that cleand the buld
clean:
rm -f -r $(OBJ_DIR)
rm -f -r $(BIN_DIR)
rm -f $(DICT_CXX_FILENAME)
rm -f $(DICT_PCM_FILENAME)
rm -f $(SHARED_LIBRARY)
rm -f -r $(SHARED_LIBRARY_DS)
rm -f *~ src/*~
# Target for creating the ./build and ./dist directories
directories:
mkdir -p $(OBJ_DIR)
mkdir -p $(BIN_DIR)
# Target for test output
echo:
$(info SOURCES: $(SOURCES))
$(info HEADERS: $(HEADERS))
# List of special targets that do not generate files
.PHONY: clean directories move_files move_debug_symbols echo