# makefile for single source file app (from my1codeapp)

ALLAPP = $(subst .c,,$(wildcard *.c))
ALLAPP += $(subst .cpp,,$(wildcard *.cpp))

TARGET ?=
TGTLBL ?= $(TARGET)
ifeq ($(TGTLBL),)
	TGTLBL = app
endif
OBJLST ?=
DOFLAG ?=
DOLINK ?=

CC = gcc
CP = g++

DELETE = rm -rf

CFLAGS += -Wall
# i prefer to build static bin
CFLAGS += -static
LFLAGS += $(LDFLAGS)
OFLAGS +=
# when working with large files
XFLAGS += -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
ifneq ($(DOFLAG),)
	CFLAGS += $(DOFLAG)
endif
ifneq ($(DOLINK),)
	LFLAGS += $(DOLINK)
endif

# i can still squeeze in some external code(s) => OBJLST!
EXTPATH = /home/share/store/repomine/my1codelib/src
ifneq ($(wildcard $(EXTPATH)),)
	CFLAGS += -I$(EXTPATH)
endif

.PHONY: dummy $(TARGET)

# TARGET can be temporary code (reside at top level)
$(TARGET): $(OBJLST) $(TARGET).o
	$(CC) $(CFLAGS) -o $(TGTLBL) $^ $(LFLAGS) $(OFLAGS)

dummy:
	@echo "Run 'make <app>' or 'make TARGET=<app>'"
	@echo "  <app> = { $(ALLAPP) }"
	@echo
	@echo "To set compiler flag (e.g. static), do 'make <app> DOFLAG=-static'"
	@echo "To link a library (e.g. math), do 'make <app> DOLINK=-lm'"

%: %.c
	$(CC) $(CFLAGS) -o $@ $< $(LFLAGS) $(OFLAGS)

%: %.cpp
	$(CP) $(CFLAGS) -o $@ $< $(LFLAGS) $(OFLAGS)

# to compile those external code(s) => OBJLST!
%.o: $(EXTPATH)/%.c $(EXTPATH)/%.h
	$(CC) -c $(CFLAGS) -o $@ $<

clean:
	-$(DELETE) $(ALLAPP) $(TGTLBL) *.o