package(default_visibility = ["//visibility:public"])

prefix_dir = "libpng-1.2.53"

PNG_SOURCES = [

"png.c",

"pngerror.c",

"pngget.c",

"pngmem.c",

"pngpread.c",

"pngread.c",

"pngrio.c",

"pngrtran.c",

"pngrutil.c",

"pngset.c",

"pngtrans.c",

"pngwio.c",

"pngwrite.c",

"pngwtran.c",

"pngwutil.c",

]

genrule(

name = "configure",

srcs = glob(

["**/*"],

exclude = [prefix_dir + "/config.h"],

),

outs = [prefix_dir + "/config.h"],

cmd = "pushd external/png_archive/%s; workdir=$$(mktemp -d -t tmp.XXXXXXXXXX); cp -a * $$workdir; pushd $$workdir; ./configure --enable-shared=no --with-pic=no; popd; popd; cp $$workdir/config.h $(@D); rm -rf $$workdir;" % prefix_dir,

)

cc_library(

name = "png",

srcs = [prefix_dir + "/" + source for source in PNG_SOURCES],

hdrs = glob(["**/*.h"]) + [":configure"],

includes = [prefix_dir],

linkopts = ["-lz"],

visibility = ["//visibility:public"],

)