Phalcon 2.1.0-RC1 PKGBUILD for Arch Linux

pkgname=php-phalcon
pkgver=2.1.0.RC1
pkgrel=1
pkgdesc="Web framework delivered as a C-extension for PHP"
url="http://phalconphp.com"
arch=('x86_64')
[[ $CARCH == 'i686' ]] && cd _arch=32bits || _arch=64bits
license=('PHP')
depends=('php')
makedepends=('gcc')
backup=('etc/php/conf.d/phalcon.ini')

source=(
        "https://github.com/phalcon/cphalcon/archive/2.1.x.zip"
)

sha256sums=('SKIP')

build() {
  cd "$srcdir/cphalcon-2.1.x"
  #Check best compilation flags for GCC
  export CC="gcc"
  export CFLAGS="-march=native -mtune=native -O2 -fomit-frame-pointer"
  export CPPFLAGS="-DPHALCON_RELEASE"
  echo "int main() {}" > t.c
  $CC $CFLAGS t.c -o t 2> t.t
  if [ $? != 0 ]; then
          chmod +x gcccpuopt
          BFLAGS=`./gcccpuopt`
          export CFLAGS="-O2 -fomit-frame-pointer $BFLAGS"
          $CC $CFLAGS t.c -o t 2> t.t
          if [ $? != 0 ]; then
                  export CFLAGS="-O2"
          fi
  fi

  if [ $($CC -dumpversion | cut -f1 -d.) -ge 4 ]; then
          $CC $CFLAGS -fvisibility=hidden t.c -o t 2> t.t && export CFLAGS="$CFLAGS -fvisibility=hidden"
  fi
  #gcc $CFLAGS -flto t.c -o t 2> t.t && { export CFLAGS="$CFLAGS -flto"; export LDFLAGS="$LDFLAGS $CFLAGS"; }
  rm -f t.t t.c t

  #cd dir
  cd "$srcdir/cphalcon-2.1.x/build/$_arch"

  #Clean current compilation
  if [ -f Makefile ]; then
          make clean
          phpize --clean
  fi

  phpize
  ./configure --prefix=/usr --enable-phalcon
  make
}

package() {
  cd "$srcdir/cphalcon-2.1.x/build/$_arch"

  make INSTALL_ROOT="$pkgdir" install
  echo 'extension=phalcon.so' > phalcon.ini
  install -Dm644 phalcon.ini "$pkgdir/etc/php/conf.d/phalcon.ini"
}