Shuffle packages into fewer layers

scripts.d/25-fftw3.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# http://fftw.org/download.html
+FFTW3_SRC="http://fftw.org/fftw-3.3.9.tar.gz"
+FFTW3_SHA512="52ebc2a33063a41fd478f6ea2acbf3b511867f736591d273dd57f9dfca5d3e0b0c73157921b3a36f1a7cfd741a8a6bde0fd80de578040ae730ea168b5ba466cf"
+
+ffbuild_enabled() {
+    # Dependency of GPL-Only librubberband
+    [[ $VARIANT == gpl* ]] || return -1
+    return 0
+}
+
+ffbuild_dockerbuild() {
+    mkdir fftw3
+    cd fftw3
+
+    check-wget fftw3.tar.gz "$FFTW3_SRC" "$FFTW3_SHA512"
+    tar xaf fftw3.tar.gz
+    rm fftw3.tar.gz
+    cd fftw*
+
+    local myconf=(
+        --prefix="$FFBUILD_PREFIX"
+        --disable-shared
+        --enable-static
+        --disable-doc
+        --with-our-malloc
+        --enable-threads
+        --with-combined-threads
+        --with-incoming-stack-boundary=2
+        --enable-sse2
+        --enable-avx
+        --enable-avx2
+    )
+
+    if [[ $TARGET == win* ]]; then
+        myconf+=(
+            --host="$FFBUILD_TOOLCHAIN"
+        )
+    else
+        echo "Unknown target"
+        return -1
+    fi
+
+    ./configure "${myconf[@]}"
+    make -j$(nproc)
+    make install
+}