xbps-src: do not allow empty PKGDESTDIR unless build_style!=meta.

common/hooks/pre-pkg/99-pkglint.sh

@@ -32,16 +32,24 @@ hook() {
 		fi
 	done
 
+	# Forbid empty packages unless build_style=meta
+	if [ "$build_style" != "meta" ]; then
+		if [ "$(find $PKGDESTDIR/* -maxdepth 1 -type d 2>/dev/null)" = "" ]; then
+			msg_red "${pkgver}: PKGDESTDIR is empty and build_style != meta\n"
+			error=1
+		fi
+	fi
+
 	if [ $error -gt 0 ]; then
 		msg_error "${pkgver}: cannot continue with installation!\n"
 	fi
 
 	# Check for missing shlibs and SONAME bumps.
-	if [ ! -f "${PKGDESTDIR}/shlib-provides" ]; then
+	if [ ! -s "${PKGDESTDIR}/shlib-provides" ]; then
 		return 0
 	fi
 
-	for filename in `cat ${PKGDESTDIR}/shlib-provides`; do
+	for filename in $(cat ${PKGDESTDIR}/shlib-provides); do
 		rev=${filename#*.so.}
 		libname=${filename%.so*}
 		_shlib=$(echo "$libname"|sed -E 's|\+|\\+|g')

srcpkgs/linux-tools/template

@@ -2,6 +2,7 @@
 pkgname=linux-tools
 version=4.1
 revision=1
+build_style=meta
 wrksrc="linux-${version}"
 short_desc="Linux kernel tools meta-pkg"
 hostmakedepends="flex perl asciidoc xmlto python automake libtool"