-#! /bin/sh
+#! /bin/bash
set -e
-set -x
+#set -x
-WAFURL=https://waf.io/waf-2.0.1
+WAFVERSION=2.0.14
+WAFTARBALL=waf-$WAFVERSION.tar.bz2
+WAFURL=https://waf.io/$WAFTARBALL
+WAFUPSTREAMKEY=https://gitlab.com/ita1024/waf/raw/master/utils/pubkey.asc
-( which wget > /dev/null && wget -qO waf $WAFURL ) || ( which curl > /dev/null && curl $WAFURL > waf )
+WAFBUILDDIR=`mktemp -d`
+function cleanup () {
+ rm -rf $WAFBUILDDIR
+}
+
+trap cleanup SIGINT SIGTERM
+
+function download () {
+ ( [[ -n `which wget` ]] && wget -qO $1 $2 ) || ( [[ -n `which curl` ]] && curl -so $1 $2 )
+}
+
+function checkwaf () {
+ download $WAFTARBALL.asc $WAFURL.asc
+ if [[ -z `which gpg` ]]
+ then
+ echo "Warning: gpg not found, not verifying signature for $WAFTARBALL"
+ else
+ download - $WAFUPSTREAMKEY | gpg --import
+ gpg --verify $WAFTARBALL.asc || exit 1
+ fi
+}
+
+function fetchwaf () {
+ download $WAFTARBALL $WAFURL
+ checkwaf
+}
+
+function buildwaf () {
+ tar xf $WAFTARBALL
+ pushd waf-$WAFVERSION
+ NOCLIMB=1 python waf-light --tools=c_emscripten $*
+ popd
+}
+
+pushd $WAFBUILDDIR
+fetchwaf
+buildwaf
+popd
+
+cp -prv $WAFBUILDDIR/waf-$WAFVERSION/waf $PWD
chmod +x waf
+
+cleanup