main/libgcab: add autoreconf to prepare to update automake version dependancy

add autoreconf to prepare to update automake version dependancy

main/libgcab/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Francesco Colista <fcolista@alpinelinux.org>
 pkgname=libgcab
 pkgver=0.7
-pkgrel=1
+pkgrel=2
 pkgdesc="A GObject library to create cabinet files"
 url=" https://wiki.gnome.org/msitools"
 arch="all"
@@ -19,6 +19,11 @@ source="https://download.gnome.org/sources/gcab/${pkgver:0:4}/gcab-$pkgver.tar.x
        "
 builddir="$srcdir"/gcab-$pkgver
 
+prepare() {
+	default_prepare
+	autoreconf -f -i
+}
+
 build() {
 	cd "$builddir"
 	./configure \