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# makefile for libpng
# Copyright (C) 2020 Cosmin Truta
# Copyright (C) 2002, 2006, 2014 Glenn Randers-Pehrson
# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
# where make install puts libpng.a and png.h
prefix=/usr/local
INCPATH=$(prefix)/include
LIBPATH=$(prefix)/lib
# override DESTDIR= on the make install command line to easily support
# installing into a temporary location. Example:
#
# make install DESTDIR=/tmp/build/libpng
#
# If you're going to install into a temporary location
# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
# you execute make install.
DESTDIR=
# Where the zlib library and include files are located
#ZLIBLIB=/usr/local/lib
#ZLIBINC=/usr/local/include
ZLIBLIB=../zlib
ZLIBINC=../zlib
CC = cc
CPP = $(CC) -E
LD = $(CC)
AR_RC = ar rc
MKDIR_P = mkdir
LN_SF = ln -sf
RANLIB = ranlib
CP = cp
MV_F = mv -f
RM_F = rm -f
AWK = awk
DFNFLAGS = # DFNFLAGS contains -D options to use in the libpng build
DFA_EXTRA = # extra files that can be used to control configuration
CPPFLAGS = -I$(ZLIBINC) # -DPNG_DEBUG=5
CFLAGS = -O # -g
LDFLAGS = -L$(ZLIBLIB)
LIBS = -lz -lm
# Pre-built configuration
# See scripts/pnglibconf.mak for more options
PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
OBJS = png.o pngerror.o pngget.o pngmem.o pngpread.o \
pngread.o pngrio.o pngrtran.o pngrutil.o pngset.o \
pngtrans.o pngwio.o pngwrite.o pngwtran.o pngwutil.o
.c.o:
$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
all: libpng.a pngtest
# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
# copy this if the following doesn't work.
pnglibconf.h: pnglibconf.dfn
$(RM_F) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
echo '#include "pnglibconf.dfn"' >pnglibconf.c
@echo "## If '$(CC) -E' fails, try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
$(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
$(AWK) -f scripts/dfn.awk out=pnglibconf.tmp pnglibconf.out >&2
$(MV_F) pnglibconf.tmp $@
pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
$(RM_F) $@ pnglibconf.pre pnglibconf.tmp
@echo "## Calling $(AWK) from scripts/pnglibconf.mak" >&2
@echo "## If 'awk' fails, try a better awk (e.g. AWK='nawk')" >&2
$(AWK) -f scripts/options.awk out=pnglibconf.pre\
version=search pngconf.h scripts/pnglibconf.dfa\
pngusr.dfa $(DFA_XTRA) >&2
$(AWK) -f scripts/options.awk out=pnglibconf.tmp pnglibconf.pre >&2
$(MV_F) pnglibconf.tmp $@
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)
$(RANLIB) $@
pngtest: pngtest.o libpng.a
$(LD) $(LDFLAGS) -o $@ pngtest.o libpng.a $(LIBS)
test: pngtest
./pngtest
install: libpng.a pnglibconf.h
-@$(MKDIR_P) $(DESTDIR)$(INCPATH)
-@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
-@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
-@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
-@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
-@$(RM_F) $(DESTDIR)$(INCPATH)/pnglibconf.h
cp png.h $(DESTDIR)$(INCPATH)/libpng
cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
(cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
cp libpng.a $(DESTDIR)$(LIBPATH)
chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
clean:
$(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
$(RM_F) pnglibconf.c pnglibconf.dfn pnglibconf.out pnglibconf.pre
# DO NOT DELETE THIS LINE -- make depend depends on it.
png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
pngtest.o: png.h pngconf.h pnglibconf.h
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