add libao package (version 1.2.2) (#3220)

mingw-w64-libao/PKGBUILD

@@ -0,0 +1,42 @@
+# Maintainer: Andrew Sun <adsun701@gmail.com>
+
+_realname=libao
+pkgbase=mingw-w64-${_realname}
+pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
+pkgver=1.2.2
+pkgrel=1
+pkgdesc="Cross-platform audio output library and plugins (mingw-w64)"
+arch=('any')
+url="http://xiph.org/ao/"
+depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
+makedepends=("${MINGW_PACKAGE_PREFIX}-gcc" "git")
+license=('GPL')
+source=("git+https://git.xiph.org/libao.git#commit=3f4b02f046550aca54d7f11a5d9c56ac421f0b66")
+sha256sums=('SKIP')
+
+prepare() {
+  cd "${srcdir}"/${_realname}
+  ./autogen.sh
+}
+
+build() {
+  cd "${srcdir}"/${_realname}
+  [[ -d "${srcdir}"/build-${CARCH} ]] && rm -rf "${srcdir}"/build-${CARCH}
+  mkdir -p "${srcdir}"/build-${CARCH} && cd "${srcdir}"/build-${CARCH}
+  LIBS+="-lksuser -lwinmm" ../${_realname}/configure \
+    --prefix=${MINGW_PREFIX} \
+    --build=${MINGW_CHOST} \
+    --host=${MINGW_CHOST} \
+    --target=${MINGW_CHOST} \
+    --enable-static \
+    --enable-shared \
+    --disable-pulse \
+    --enable-wmm
+
+  make
+}
+
+package() {
+  cd "${srcdir}"/build-${CARCH}
+  make install DESTDIR="${pkgdir}"
+}