Teach mkroot to cross compile additional packages, with dropbear as example.

scripts/mkroot.sh CROSS=sh4 LINUX=~/linux dropbear

No, I'm not going down the rathole of adding lots of packages, but this
shows _how_ to do it if you want to. The hooks are there. They don't have
to be in scripts/root, that's just a default search location, you can provide
a path on the command line or have them be in the $PATH.

1 files changed, 45 insertions, 0 deletions

diff --git a/scripts/root/plumbing b/scripts/root/plumbing
new file mode 100755
index 00000000..0bb735ee
--- /dev/null
+++ b/scripts/root/plumbing
@@ -0,0 +1,45 @@
+#!/bin/echo run this from "make root"
+
+# Plumbing to download files
+
+[ -z "$ROOT" ] && echo "no" && exit 1
+mkdir -p "${DOWNLOAD:=$PWD/root_download}" || exit 1
+
+### Functions to download, extract, and clean up after source packages.
+
+# Usage: download HASH URL
+# Grabs source from URL confirming SHA1 hash (Basically == "wget $2")
+# You can stick extracted source in $DOWNLOAD and build will use that instead
+download() {
+  FILE="$(basename "$2")"
+  [ -d "$DOWNLOAD/${FILE/-*/}" ] && echo "$FILE" local && return 0
+  X=0; while true; do
+    [ "$(sha1sum < "$DOWNLOAD/$FILE" 2>/dev/null)" == "$1  -" ] &&
+      echo "$FILE" confirmed && break
+    rm -f $DOWNLOAD/${FILE/-[0-9]*/}-[0-9]* || break
+    [ $X -eq 0 ] && X=1 || exit 1
+    wget "$2" -O "$DOWNLOAD/$FILE"
+  done
+}
+
+# Usage: setupfor PACKAGE
+# Extracts source tarball (or snapshot a repo) to create disposable build dir.
+# Basically "tar xvzCf $MYBUILD $DOWNLOAD/$1.tar.gz && cd $NEWDIR"
+setupfor() {
+  PACKAGE="$(basename "$1")"
+  announce "$PACKAGE" && cd "$MYBUILD" && rm -rf "$PACKAGE" || exit 1
+  if [ -d "$DOWNLOAD/$PACKAGE" ]; then
+    cp -la "$DOWNLOAD/$PACKAGE/." "$PACKAGE" && cd "$PACKAGE" || exit 1
+  else
+    tar xvaf "$DOWNLOAD/$PACKAGE"-*.t* && cd "$PACKAGE"-* || exit 1
+  fi
+}
+
+# Usage: cleanup
+# Delete setupfor's dir, exiting if build failed (basically "rm -rf $PACKAGE")
+cleanup() {
+  [ $? -ne 0 ] && exit 1
+  [ -z "$PACKAGE" ] && exit 1
+  [ ! -z "$NO_CLEANUP" ] && return
+  cd .. && rm -rf "$PACKAGE"* || exit 1
+}