Add experimental libva/vaapi support

scripts.d/50-vaapi/30-libpciaccess.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+LIBPCIACCESS_REPO="https://gitlab.freedesktop.org/xorg/lib/libpciaccess.git"
+LIBPCIACCESS_COMMIT="9c01fdd7c02d8b9b5003e659ebca0b3643bd47c4"
+
+ffbuild_enabled() {
+    [[ $TARGET != linux* ]] && return -1
+    return 0
+}
+
+ffbuild_dockerbuild() {
+    git-mini-clone "$LIBPCIACCESS_REPO" "$LIBPCIACCESS_COMMIT" libpciaccess
+    cd libpciaccess
+
+    autoreconf -fi
+
+    local myconf=(
+        --prefix="$FFBUILD_PREFIX"
+        --disable-shared
+        --enable-static
+        --with-pic
+        --with-zlib
+    )
+
+    if [[ $TARGET == linux* ]]; then
+        myconf+=(
+            --host="$FFBUILD_TOOLCHAIN"
+        )
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    ./configure "${myconf[@]}"
+    make -j$(nproc)
+    make install
+}