.hashsum

#!/bin/bash

DIR="$1"
if [ "$DIR" = "" ]; then
    echo "usage: $0 <folder>" >&2
    echo "returns md5 hashsum for folder including dependencies" >&2
    exit 3
fi
if ! test -x ../build_cached; then
    echo "ERROR: must be run from packages folder" >&2
    exit 3
fi

if [ "x$OMD_ROOT" = "x" ]; then
    echo "ERROR: OMD_ROOT not set!" >&2
    exit 3
fi

MD5=$( (find $DIR/ -type f -exec md5sum {} \; && find $DIR/ -type l -exec md5sum {} \; ) 2>&1 | sort | md5sum | awk '{ print $1 }')

# add dependencies and rebuild if any of the dependency has changed
DEPS=$(grep -P 'DEPENDS\ *=' $DIR/Makefile 2>/dev/null | awk -F = '{ print $2 }' | sort -u | sed "s|\$(OMD_ROOT)|$OMD_ROOT|g")
# add go dependencies
GOVERSION=$(grep -P 'GOPKG\ *=' $DIR/Makefile $DIR/*/Makefile 2>/dev/null | awk -F = '{ print $2 }' | tr -d ' ' | sort -u)
if [ -n "$GOVERSION" ]; then
    for GO in $GOVERSION; do
        DEPS="$DEPS go-$GO"
    done
fi
if [ -n "$DEPS" ]; then
    for DEP in $DEPS; do
        MD5=$(echo $(md5sum $DEP/*.gz $DEP/Makefile $DEP/patches/* $DEP 2>/dev/null | awk '{ print $1 }') $MD5 | md5sum | awk '{ print $1 }')
    done
fi
echo "$MD5"