zopfli: add msys2_references + fix CMake build error (#24860)

mingw-w64-zopfli/PKGBUILD

@@ -4,12 +4,16 @@ _realname=zopfli
 pkgbase=mingw-w64-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 pkgver=1.0.3
-pkgrel=2
+pkgrel=3
 pkgdesc="A C library to perform very good, but slow, deflate or zlib compression (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
 url="https://github.com/google/zopfli"
 license=('spdx:Apache-2.0')
+msys2_references=(
+  'anitya: 6604'
+  'archlinux: zopfli'
+)
 depends=("${MINGW_PACKAGE_PREFIX}-cc-libs")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-cc")
@@ -66,6 +70,7 @@ build() {
       -DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX} \
       "${extra_config[@]}" \
       -DBUILD_SHARED_LIBS=ON \
+      -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
       ../zopfli-zopfli-${pkgver}
   make
 
@@ -76,6 +81,7 @@ build() {
       -DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX} \
       "${extra_config[@]}" \
       -DBUILD_SHARED_LIBS=OFF \
+      -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
       ../zopfli-zopfli-${pkgver}
   make
 }