# Maintainer: Alexey Pavlov <alexpux@gmail.com>

_realname=libpng
pkgbase=mingw-w64-${_realname}
pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
pkgver=1.6.21
pkgrel=1
arch=('any')
pkgdesc="A collection of routines used to create PNG format graphics (mingw-w64)"
depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
         "${MINGW_PACKAGE_PREFIX}-zlib")
makedepends=("${MINGW_PACKAGE_PREFIX}-gcc")
license=('custom')
url="http://www.libpng.org/pub/png/libpng.html"
options=('strip' '!libtool' 'staticlibs')
source=("https://downloads.sourceforge.net/sourceforge/libpng/${_realname}-${pkgver}.tar.xz"
        "https://downloads.sourceforge.net/project/libpng-apng/libpng16/${pkgver}/${_realname}-${pkgver}-apng.patch.gz")

sha256sums=('6c8f1849eb9264219bf5d703601e5abe92a58651ecae927a03d1a1aa15ee2083'
            '6da70e2526fe91c3379592546d2f14c0dfef8f04e2b338dddd5dc9ef45618c73')

prepare() {
  cd "${srcdir}/${_realname}-${pkgver}"

  # Add animated PNG (apng) support
  # see https://sourceforge.net/projects/libpng-apng/
  patch -p1 -i "${srcdir}/${_realname}-${pkgver}-apng.patch"
}

build() {
  [[ -d ${srcdir}/build-${MINGW_CHOST} ]] && rm -rf ${srcdir}/build-${MINGW_CHOST}
  mkdir -p "${srcdir}/build-${MINGW_CHOST}"
  cd "${srcdir}/build-${MINGW_CHOST}"
  ../${_realname}-${pkgver}/configure \
    --build=${MINGW_CHOST} \
    --host=${MINGW_CHOST} \
    --target=${MINGW_CHOST} \
    --prefix=${MINGW_PREFIX} \
    --enable-shared --enable-static \
    as_ln_s="cp -pR"
  make
}

package () {
  cd "${srcdir}/build-${MINGW_CHOST}"
  make install DESTDIR="${pkgdir}"

  install -D -m644 "${srcdir}/libpng-${pkgver}/LICENSE" "${pkgdir}${MINGW_PREFIX}/share/licenses/$_realname/LICENSE"
}
