spdylay: autoreconf for clang

mingw-w64-spdylay/PKGBUILD

@@ -5,7 +5,7 @@ pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 pkgver=1.4.0
 _pkgver=v$pkgver
-pkgrel=1
+pkgrel=2
 pkgdesc="The experimental SPDY protocol version 2, 3 and 3.1 implementation in C (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32')
@@ -19,6 +19,8 @@ sha256sums=('f45641df48f0f8e13fe80166437828201b46f56681b11cd93a614a82ebd5dcba'
 prepare() {
   cd $srcdir/${_realname}-${pkgver}
   patch -p1 -i ${srcdir}/spdylay-1.4.0-fix-zlib.patch
+  # autoreconf to get updated libtool files with clang support
+  autoreconf -fiv
 }
 
 build() {