abuild: require package() function

make a missing function for package() a hard error.

this means we never run build in fakeroot.

abuild.in

@@ -134,7 +134,7 @@ default_sanitycheck() {
 	if [ $(echo "$pkgdesc" | wc -c) -gt 128 ]; then
 		die "pkgdesc is too long"
 	fi
-	is_function package || warning "Missing package() function in APKBUILD"
+	is_function package || die "Missing package() function in APKBUILD"
 
 	if [ -n "$replaces_priority" ] \
 		&& ! echo $replaces_priority | egrep -q '^[0-9]+$'; then
@@ -1502,11 +1502,7 @@ create_apks() {
 }
 
 build_abuildrepo() {
-	local d apk _build=build _check=check_fakeroot
-	if ! is_function package; then
-		# if package() is missing then build is called from rootpkg
-		_build=true
-	fi
+	local d apk _check=check_fakeroot
 	if options_has "!checkroot"; then
 		_check=check
 	fi
@@ -1525,7 +1521,6 @@ build_abuildrepo() {
 		unpack
 		prepare
 		mkusers
-		$_build
 		$_check
 		rootpkg
 		cleanup $CLEANUP
@@ -1764,17 +1759,11 @@ check_fakeroot() {
 
 # build and package in fakeroot
 rootpkg() {
-	local _package=package
-	if ! is_function package; then
-		# if package() is missing then run 'build' in fakeroot instead
-		warning "No package() function in APKBUILD"
-		_package=build
-	fi
 	cd "$startdir"
 	rm -rf "$pkgdir"
 	[ -n "$FAKEROOT" ] && msg "Entering fakeroot..."
 	do_fakeroot "$abuild_path" $color_opt $keep_build \
-		$_package \
+		package \
 		prepare_subpackages \
 		prepare_language_packs \
 		prepare_package \
@@ -2129,18 +2118,14 @@ checksum() {
 }
 
 rootbld_actions() {
-	local part _build=build _check=check_fakeroot
-	if ! is_function package; then
-		# if package() is missing then build is called from rootpkg
-		_build=true
-	fi
+	local part _check=check_fakeroot
 	if options_has "!checkroot"; then
 		_check=check
 	fi
 	if ! want_check; then
 		_check=true
 	fi
-	for part in symlinksrc unpack prepare $_build $_check rootpkg; do
+	for part in symlinksrc unpack prepare $_check rootpkg; do
 		runpart $part
 	done
 }