# Maintainer: Martchus <martchus@gmx.net>
# Contributor: Arthur Darcet <arthur.darcet at m4x.org>
# Contributor: Techlive Zheng <techlivezheng at gmail.com>

_pkgname=libiconv
_android_arch=arm64-v8a
_pkg_arch=aarch64
_android_toolchain=$_pkg_arch-linux-android
_android_platform=22
_prefix=/opt/android-libs/$_pkg_arch

pkgname=android-$_pkg_arch-$_pkgname
pkgver=1.15
pkgrel=1
pkgdesc="Provides libiconv.so and libcharset.so (Android $_pkg_arch)"
arch=('any')
url='http://www.gnu.org/software/libiconv/'
license=('LGPL')
makedepends=('android-ndk')
conflicts=("android-$_pkgname-$_android_arch")
replaces=("android-$_pkgname-$_android_arch")
source=("http://ftp.gnu.org/pub/gnu/${_pkgname}/${_pkgname}-${pkgver}.tar.gz")
md5sums=('ace8b5f2db42f7b3b3057585e80d9808')
options=(!libtool !buildflags staticlibs !strip !emptydirs)

build() {
  cd $srcdir/${_pkgname}-${pkgver}
  sed '/LD_RUN_PATH/d' -i Makefile.in

  # configure paths
  export ANDROID_NDK=/opt/android-ndk
  export CROSS_COMPILE=$_android_toolchain
  export ANDROID_PREFIX=${ANDROID_NDK}/toolchains/$_android_toolchain-4.9/prebuilt/linux-x86_64
  export ANDROID_SYSROOT=${ANDROID_NDK}/platforms/android-$_android_platform/arch-${_android_arch%-*}/usr
  export CROSS_PATH=${ANDROID_PREFIX}/bin/$_android_toolchain

  # configure tools
  export CPP=${PWD}/cpp.sh
  export AR=${CROSS_PATH}-ar
  export AS=${CROSS_PATH}-as
  export NM=${CROSS_PATH}-nm
  export CC=${CROSS_PATH}-gcc
  export CXX=${CROSS_PATH}-g++
  export LD=${CROSS_PATH}-ld
  export RANLIB=${CROSS_PATH}-ranlib
  export STRIP=${CROSS_PATH}-strip

  # configure flags
  export CFLAGS="${CFLAGS} --gcc-toolchain=${ANDROID_PREFIX} --sysroot=${ANDROID_SYSROOT} -I${ANDROID_NDK}/sysroot/usr/include -I${ANDROID_NDK}/sysroot/usr/include/${CROSS_COMPILE} -I${ANDROID_SYSROOT}/usr/include -I${ANDROID_PREFIX}/include"
  export CPPFLAGS="${CFLAGS}"
  export LDFLAGS="${LDFLAGS} -L${ANDROID_SYSROOT}/usr/lib"

  # setup preprocessor (because the NDK doesn't provide a wrapper like for gcc and g++)
  printf "#!/bin/bash\nexec \"$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++\" -target $_android_toolchain -E \"\$@\"" > "$CPP"
  chmod +x "$CPP"

  ./configure \
    --host=$_android_toolchain \
    --target=$_android_toolchain \
    --build="$CHOST" \
    --with-sysroot="$ANDROID_SYSROOT" \
    --prefix="$_prefix" \
    --libdir="$_prefix/lib" \
    --includedir="$_prefix/include" \
    --enable-shared=yes \
    --enable-static=yes

  # make sure the LDFLAGS are actually used (LDFLAGS are not passed otherwise)
  local libtool_subst="s:\\\$CC -shared:\\\$CC -shared --gcc-toolchain=${ANDROID_PREFIX} --sysroot=${ANDROID_SYSROOT} $LDFLAGS:g"
  sed -i "$libtool_subst" libtool
  sed -i "$libtool_subst" libcharset/libtool

  # build target lib/localcharset.h and directory lib to experience less brokenness
  make lib/localcharset.h
  cd lib
  make
}

package() {
  cd $srcdir/${_pkgname}-${pkgver}/lib
  make DESTDIR="$pkgdir" LIBDIR="$_prefix/lib" install
  cp libcharset.a "$pkgdir/$_prefix/lib/libcharset.a"
  cp libcharset.so "$pkgdir/$_prefix/lib/libcharset.so"
  cd ..
  mkdir -p "$pkgdir/$_prefix"/include
  mv include/iconv.h "$pkgdir/$_prefix"/include
  cd libcharset
  mv include/libcharset.h "$pkgdir/$_prefix"/include
  mv include/localcharset.h "$pkgdir/$_prefix"/include
}