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## Proxy Makefile.am to build libpng for TeX Live.
##
##   Copyright (C) 2009-2013 Peter Breitenlohner <tex-live@tug.org>
##
##   This file is free software; the copyright holder
##   gives unlimited permission to copy and/or distribute it,
##   with or without modifications, as long as this notice is preserved.
##
ACLOCAL_AMFLAGS = -I ../../m4

# Rebuild
.PHONY: rebuild
rebuild: all

## We want to re-distribute the whole original libpng source tree.
##
## With current automake (1.10.2) 'make distcheck' fails when
## DISTFILES contains a directory and files in that directory.
## Thus nodist_* for all files in $(LIBPNG_TREE).
EXTRA_DIST = $(LIBPNG_TREE)

## Patches applied to the original source tree
##
EXTRA_DIST += $(LIBPNG_TREE)-PATCHES

# in case of an SVN repository
dist-hook:
	rm -rf `find $(distdir) -name .svn -o -name .deps -o -name .dirstamp -o -name '*.$(OBJEXT)'`
	rm -f $(distdir)/$(LIBPNG_TREE)/config.sub \
	  $(distdir)/$(LIBPNG_TREE)/config.guess \
	  $(distdir)/$(LIBPNG_TREE)/depcomp \
	  $(distdir)/$(LIBPNG_TREE)/install-sh \
	  $(distdir)/$(LIBPNG_TREE)/ltmain.sh \
	  $(distdir)/$(LIBPNG_TREE)/missing \
	  $(distdir)/$(LIBPNG_TREE)/mkinstalldirs

SUBDIRS = include

AM_CPPFLAGS = -I$(top_srcdir)/$(LIBPNG_TREE) $(ZLIB_INCLUDES) $(LIBPNG_DEFINES)
AM_CFLAGS = $(WARNING_CFLAGS)

noinst_LIBRARIES=libpng.a

nodist_libpng_a_SOURCES = \
	@LIBPNG_TREE@/png.c \
	@LIBPNG_TREE@/pngset.c \
	@LIBPNG_TREE@/pngget.c \
	@LIBPNG_TREE@/pngrutil.c \
	@LIBPNG_TREE@/pngtrans.c \
	@LIBPNG_TREE@/pngwutil.c \
	@LIBPNG_TREE@/pngread.c \
	@LIBPNG_TREE@/pngrio.c \
	@LIBPNG_TREE@/pngwio.c \
	@LIBPNG_TREE@/pngwrite.c \
	@LIBPNG_TREE@/pngrtran.c \
	@LIBPNG_TREE@/pngwtran.c \
	@LIBPNG_TREE@/pngmem.c \
	@LIBPNG_TREE@/pngerror.c \
	@LIBPNG_TREE@/pngpread.c

$(libpng_a_OBJECTS): config.force

config.force: $(ZLIB_DEPEND)
	echo timestamp >config.force
	$(SHELL) ./config.status --recheck

DISTCLEANFILES = config.force

## Rebuild zlib
@ZLIB_RULE@

TESTS_ENVIRONMENT = LIBPNG_TREE=$(LIBPNG_TREE)
if build
TESTS = libpng.test
check_PROGRAMS = pngtest
dist_check_SCRIPTS = libpng.test
endif build

CLEANFILES = pngout.png

nodist_pngtest_SOURCES = @LIBPNG_TREE@/pngtest.c
pngtest_LDADD = libpng.a $(ZLIB_LIBS)