sleef: Add 3.9.0

suggested in https://github.com/msys2/MSYS2-packages/issues/2250#issuecomment-753526550

doesn't build for arm64 currently

mingw-w64-sleef/PKGBUILD

@@ -0,0 +1,70 @@
+# Maintainer: Christoph Reiter <reiter.christoph@gmail.com>
+
+_realname=sleef
+pkgbase=mingw-w64-${_realname}
+pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
+url="https://sleef.org"
+pkgver=3.9.0
+pkgrel=1
+pkgdesc="SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT (mingw-w64)"
+arch=('any')
+mingw_arch=('mingw64' 'ucrt64' 'clang64')
+msys2_repository_url="https://github.com/shibatch/sleef"
+license=("spdx:BSL-1.0")
+source=(
+  "https://github.com/shibatch/sleef/archive/refs/tags/${pkgver}.tar.gz"
+)
+sha256sums=('af60856abac08a3b5e72a8d156dd71fec1f7ac23de8ee67793f45f9edcdf0908')
+depends=("${MINGW_PACKAGE_PREFIX}-cc-libs")
+makedepends=(
+  "${MINGW_PACKAGE_PREFIX}-cc"
+  "${MINGW_PACKAGE_PREFIX}-cmake"
+  "${MINGW_PACKAGE_PREFIX}-ninja"
+  "${MINGW_PACKAGE_PREFIX}-openmp"
+)
+checkdepends=(
+  "${MINGW_PACKAGE_PREFIX}-mpfr"
+  "${MINGW_PACKAGE_PREFIX}-openssl"
+  "${MINGW_PACKAGE_PREFIX}-fftw"
+)
+
+build() {
+  declare -a extra_config
+  if check_option "debug" "n"; then
+    extra_config+=("-DCMAKE_BUILD_TYPE=Release")
+  else
+    extra_config+=("-DCMAKE_BUILD_TYPE=Debug")
+  fi
+
+  MSYS2_ARG_CONV_EXCL="-DCMAKE_INSTALL_PREFIX=" \
+    cmake \
+      -GNinja \
+      -DCMAKE_INSTALL_PREFIX="${MINGW_PREFIX}" \
+      "${extra_config[@]}" \
+      -DBUILD_SHARED_LIBS=OFF \
+      -S "${_realname}-${pkgver}" \
+      -B "build-${MSYSTEM}-static"
+
+  cmake --build "build-${MSYSTEM}-static"
+
+  MSYS2_ARG_CONV_EXCL="-DCMAKE_INSTALL_PREFIX=" \
+    cmake \
+      -GNinja \
+      -DCMAKE_INSTALL_PREFIX="${MINGW_PREFIX}" \
+      "${extra_config[@]}" \
+      -DCMAKE_DLL_NAME_WITH_SOVERSION=ON \
+      -DBUILD_SHARED_LIBS=ON \
+      -S "${_realname}-${pkgver}" \
+      -B "build-${MSYSTEM}"
+
+  cmake --build "build-${MSYSTEM}"
+}
+
+check() {
+  cmake --build "build-${MSYSTEM}" --target test
+}
+
+package() {
+  DESTDIR="${pkgdir}" cmake --install "build-${MSYSTEM}-static"
+  DESTDIR="${pkgdir}" cmake --install "build-${MSYSTEM}"
+}