Makefile-nolib

# Sample makefile for pngcrush using gcc and GNU make.
# Glenn Randers-Pehrson
# Last modified:  3 October 2016
#
# Invoke this makefile from a shell prompt in the usual way; for example:
#
#	make -f Makefile-nolib [OPTIONS=-Dsomething]
#
# This makefile builds a dynamically linked executable.

# macros --------------------------------------------------------------------

# uncomment these 2 lines only if you are using an external copy of libpng:
PNGINC = /usr/local/include
PNGLIB = /usr/local/lib
# uncomment these 2 lines only if you are using an external copy of zlib:
ZINC = /usr/local/include
ZLIB = /usr/local/lib

CC = gcc
LD = $(CC)
RM = rm -f

CPPFLAGS = ${OPTIONS} -I$(PNGINC)

CFLAGS = -g -O3 -fomit-frame-pointer -Wall
# [note that -Wall is a gcc-specific compilation flag ("all warnings on")]
LDFLAGS =
O = .o
E =

PNGCRUSH  = pngcrush

LIBS = -L$(PNGLIB) -L$(ZLIB) -lpng -lz -lm

OBJS  = pngcrush$(O)

EXES = $(PNGCRUSH)$(E)

# implicit make rules -------------------------------------------------------

.c$(O): cexcept.h $(ZHDR)
	$(CC) -c $(CPPFLAGS) $(CFLAGS) $<

# dependencies --------------------------------------------------------------


all:  $(EXES)

pngcrush$(O): pngcrush.c cexcept.h
	$(CC) -c $(CPPFLAGS) $(CFLAGS) $<

$(PNGCRUSH)$(E): $(OBJS)
	$(LD) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)

# maintenance ---------------------------------------------------------------

clean:
	$(RM) $(EXES) $(OBJS)

install:
	mkdir -p $(DESTDIR)/usr/bin/
	cp $(PNGCRUSH)$(E) $(DESTDIR)/usr/bin/
	chmod 0755 $(DESTDIR)/usr/bin/$(PNGCRUSH)$(E)