openblas: no openmp on clangarm64

mingw-w64-openblas/PKGBUILD

@@ -19,7 +19,7 @@ replaces=("${MINGW_PACKAGE_PREFIX}-${_realname}"
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs"
          "${MINGW_PACKAGE_PREFIX}-libwinpthread"
          $([[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-gcc-libgfortran")
-         $([[ ${MINGW_PACKAGE_PREFIX} != *-clang-* ]] || echo "${MINGW_PACKAGE_PREFIX}-openmp")
+         $([[ ${MINGW_PACKAGE_PREFIX} != *-clang-*86* ]] || echo "${MINGW_PACKAGE_PREFIX}-openmp")
          )
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
              "${MINGW_PACKAGE_PREFIX}-ninja"
@@ -100,7 +100,7 @@ _build_openblas() {
     ${dynamic_arch} \
     -DUSE_THREAD=ON \
     -DNUM_THREADS=64 \
-    -DUSE_OPENMP=ON \
+    $([[ ${MSYSTEM_CARCH} == aarch64 ]] || echo "-DUSE_OPENMP=ON") \
     -DTARGET=${target} \
     ${_c_lapack_opt} \
     ${_idx_opt} \