############################################################################
#'A Generic Makefile for Building Multiple main() Targets in $PWD'
# Author: Robert A. Nader (2012)
# Email: naderra at some gmail
# Web: xiberix dot com
############################################################################
# The purpose of this makefile is to compile to executable all C source
# files in CWD, where each .c file has a main() function, and each object
# links with a common LDFLAG.
#
# This makefile should suffice for simple projects that require building
# similar executable targets. For example, if your CWD build requires
# exclusively this pattern:
#
# cc -c $(CFLAGS) main_01.c
# cc main_01.o $(LDFLAGS) -o main_01
#
# cc -c $(CFLAGS) main_2..c
# cc main_02.o $(LDFLAGS) -o main_02
#
# etc, ... a common case when compiling the programs of some chapter,
# then you may be interested in using this makefile.
#
# What YOU do:
#
# Set PRG_SUFFIX_FLAG below to either 0 or 1 to enable or disable
# the generation of a .exe suffix on executables
#
# Set CFLAGS and LDFLAGS according to your needs.
#
# What this makefile does automagically:
#
# Sets SRC to a list of *.c files in PWD using wildcard.
# Sets PRGS BINS and OBJS using pattern substitution.
# Compiles each individual .c to .o object file.
# Links each individual .o to its corresponding executable.
#
###########################################################################
#
PRG_SUFFIX_FLAG := 0
#
LDFLAGS := -lrt -lpthread
CFLAGS_INC := 
CFLAGS := -g $(CFLAGS_INC)
CC := gcc
#
## ==================- NOTHING TO CHANGE BELOW THIS LINE ===================
# ##
SRCS := $(wildcard *.c)
PRGS := $(patsubst %.c,%,$(SRCS))
PRG_SUFFIX=.exe
BINS := $(patsubst %,%$(PRG_SUFFIX),$(PRGS))
#OBJS are automagically compiled by make.
OBJS := $(patsubst %,%.o,$(PRGS))
##
all : $(BINS)
##
#For clarity sake we make use of:
.SECONDEXPANSION:
OBJ = $(patsubst %$(PRG_SUFFIX),%.o,$@)
ifeq ($(PRG_SUFFIX_FLAG),0)
BIN = $(patsubst %$(PRG_SUFFIX),%,$@)
else
BIN = $@
endif
#Compile the executables
%$(PRG_SUFFIX) : $(OBJS)
	$(CC) $(OBJ) $(LDFLAGS) -o $(BIN)
##
#$(OBJS) should be automagically removed right after linking.
##
veryclean:
	ifeq ($(PRG_SUFFIX_FLAG),0)
		$(RM) $(PRGS)
	else
		$(RM) $(BINS)
	endif
##
rebuild: veryclean all
##
#eof Generic_Multi_Main_PWD.makefile
##
#