mingw-w64-cross-headers: split out mingwarm64

We need to use the fork, so we can either backport patches, or
keep things simple and use a different source for the mingwarm64
variant, which this tries to do.

mingw-w64-cross-headers/PKGBUILD

@@ -4,7 +4,7 @@
 _realname=headers
 _mingw_suff=mingw-w64-cross
 pkgbase="${_mingw_suff}-${_realname}"
-_targetpkgs=("${_mingw_suff}-mingwarm64-${_realname}" "${_mingw_suff}-ucrt64-${_realname}" "${_mingw_suff}-mingw32-${_realname}" "${_mingw_suff}-mingw64-${_realname}")
+_targetpkgs=("${_mingw_suff}-ucrt64-${_realname}" "${_mingw_suff}-mingw32-${_realname}" "${_mingw_suff}-mingw64-${_realname}")
 pkgname=("${_mingw_suff}-${_realname}" "${_targetpkgs[@]}")
 pkgver=12.0.0.r250.gc6bf4bdf6
 pkgrel=1
@@ -100,8 +100,3 @@ package_mingw-w64-cross-mingw64-headers() {
   conflicts=("${_mingw_suff}-${_realname}<=12.0.0.r0.g819a6ec2e-1")
   _package "x86_64-w64-mingw32"
 }
-
-package_mingw-w64-cross-mingwarm64-headers() {
-  conflicts=("${_mingw_suff}-${_realname}<=12.0.0.r0.g819a6ec2e-1")
-  _package "aarch64-w64-mingw32"
-}

mingw-w64-cross-mingwarm64-headers/PKGBUILD

@@ -0,0 +1,78 @@
+# Maintainer: Alexey Pavlov <alexpux@gmail.com>
+# Contributor: Martell Malone <martellmalone@gmail.com>
+
+_realname=headers
+_mingw_suff=mingw-w64-cross
+pkgbase="${_mingw_suff}-mingwarm64-${_realname}"
+_targetpkgs=("${_mingw_suff}-mingwarm64-${_realname}")
+pkgname=("${_targetpkgs[@]}")
+pkgver=12.0.0dev
+pkgrel=1
+pkgdesc="MinGW-w64 headers for cross-compiler"
+arch=('i686' 'x86_64')
+url="https://www.mingw-w64.org/"
+msys2_repository_url="https://github.com/Windows-on-ARM-Experiments/mingw-woarm64"
+license=('custom')
+groups=("${_mingw_suff}-toolchain" "${_mingw_suff}")
+makedepends=('git' 'autotools')
+options=('!strip' '!libtool' '!emptydirs' '!buildflags')
+_commit='bd5721da140a6a209e1ca53a2a0a207ac9ec9b0e'
+source=("mingw-w64"::"git+https://github.com/Windows-on-ARM-Experiments/mingw-woarm64.git#commit=$_commit")
+sha256sums=('165da7d2618f08859dfe3f2875845d8a73205d768aa79eb7f39a2d3685fbe98d')
+msys2_references=(
+  'archlinux: mingw-w64-headers'
+  'cpe: cpe:/a:mingw-w64:mingw-w64'
+)
+
+_build() {
+  _target=$1
+  unset CC CXX
+
+  if [[ "${_target}" == "x86_64-w64-mingw32ucrt" ]]; then
+    _default_msvcrt=ucrt
+    _default_win32_winnt=0x603  # Windows 8.1
+  elif [[ "${_target}" == "aarch64-w64-mingw32" ]]; then
+    _default_msvcrt=ucrt
+    _default_win32_winnt=0xA00  # Windows 10
+  else
+    _default_msvcrt=msvcrt
+    _default_win32_winnt=0x601  # Windows 7
+  fi
+
+  msg "Configuring ${_target} headers"
+  mkdir -p ${srcdir}/headers-${_target} && cd ${srcdir}/headers-${_target}
+  ${srcdir}/mingw-w64/mingw-w64-headers/configure \
+  --build=${CHOST} \
+  --host=${_target} \
+  --prefix=/opt/${_target} \
+  --enable-sdk=all \
+  --with-default-win32-winnt=${_default_win32_winnt} \
+  --with-default-msvcrt=${_default_msvcrt}
+}
+
+_package() {
+  _target=$1
+  msg "Installing ${_target} headers"
+  cd ${srcdir}/headers-${_target}
+  make DESTDIR=${pkgdir} install
+
+  rm ${pkgdir}/opt/${_target}/include/pthread_signal.h
+  rm ${pkgdir}/opt/${_target}/include/pthread_time.h
+  rm ${pkgdir}/opt/${_target}/include/pthread_unistd.h
+}
+
+build() {
+  for _pkg in "${_targetpkgs[@]}"; do
+    case "$_pkg" in
+      "${_mingw_suff}-ucrt64-${_realname}") _build "x86_64-w64-mingw32ucrt" ;;
+      "${_mingw_suff}-mingw32-${_realname}") _build "i686-w64-mingw32" ;;
+      "${_mingw_suff}-mingw64-${_realname}") _build "x86_64-w64-mingw32" ;;
+      "${_mingw_suff}-mingwarm64-${_realname}") _build "aarch64-w64-mingw32" ;;
+    esac
+  done
+}
+
+package_mingw-w64-cross-mingwarm64-headers() {
+  conflicts=("${_mingw_suff}-${_realname}<=12.0.0.r0.g819a6ec2e-1")
+  _package "aarch64-w64-mingw32"
+}