# defaults
ifndef DEBUG
CXXFLAGS ?= -O3 -march=native -fomit-frame-pointer -pipe -DDEBUG
else
CXXFLAGS += -ggdb3
endif
#LDFLAGS ?= -Wl,-O1
LDFLAGS ?= -Wl,-O1 -Wl,--as-needed
STRIP ?= strip --strip-unneeded -R .comment

# root-dependant stuff
ROOTCFLAGS ?= $(shell root-config --cflags)
CXXFLAGS += -Wall -pipe -D_FILE_OFFSET_BITS=64 $(ROOTCFLAGS) -fvisibility-inlines-hidden
ROOTLIBS = $(shell root-config --libs) -lEG -lpythia6 -lEGPythia6
DEPFLAGS = -isystem $(shell root-config --incdir)

SRCS = pylam.cpp
OBJS = $(SRCS:.cpp=.o)
DEPS = $(SRCS:.cpp=.d)

##### RULES #####
.PHONY: all clean deps distclean tags

all: pylam

deps: $(DEPS)

%.d: %.cpp
	$(CXX) $(DEPFLAGS) -MM -MG $< > $@

### Binaries rules
pylam: $(DEPS) $(OBJS) Makefile
	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(OBJS) $(ROOTLIBS) -o $@
ifndef DEBUG
	$(STRIP) $@
endif

# misc and cleanup
tags:
	ctags $(SRCS)
clean:
	rm -f $(OBJS) $(DEPS)
distclean: clean
	rm -f $(BINS) tags

# on distclean per-file deps will be removed anyway
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),distclean)
-include $(DEPS)
endif
endif