PNG_URL := https://sourceforge.net/projects/libpng/files/libpng16/1.6.34/libpng-1.6.34.tar.xz

PNG_TAR := $(call download,$(PNG_URL))

PNG_EXTRACT := $(call extract,$(PNG_TAR))

PNG := $(INSTALL)/lib/libpng.a

$(PNG_EXTRACT)/Makefile: $(PNG_EXTRACT).extracted $(host-toolchain)

cd $(dir $@) \

&& ./configure \

--prefix=$(INSTALL) \

--host=$(HOST) \

--build=$(BUILD) \

CPPFLAGS="$(CROSS_CPPFLAGS)" \

CFLAGS="$(CROSS_CFLAGS)" \

LDFLAGS="$(CROSS_LDFLAGS)" \

PKG_CONFIG_LIBDIR="$(CROSS_PKG_CONFIG_LIBDIR)" \

CC=$(CROSS_CC)

$(PNG): $(PNG_EXTRACT)/Makefile

$(MAKE) -C $(PNG_EXTRACT)

$(MAKE) -C $(PNG_EXTRACT) install

$(compile-host-1): $(PNG)