[gentoo-dev] [PATCH 2/9] multilib-build.eclass: Add missing error checks

["Michał Górny" <mgorny@gentoo.org>]

---
 eclass/multilib-build.eclass | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/eclass/multilib-build.eclass b/eclass/multilib-build.eclass
index dd03553..8e58a2b 100644
--- a/eclass/multilib-build.eclass
+++ b/eclass/multilib-build.eclass
@@ -262,19 +262,23 @@ multilib_for_best_abi() {
 # runs (if any). Dies if header files differ.
 multilib_check_headers() {
 	_multilib_header_cksum() {
-		[[ -d ${ED}usr/include ]] && \
-		find "${ED}"usr/include -type f \
-			-exec cksum {} + | sort -k2
+		set -o pipefail
+
+		if [[ -d ${ED}usr/include ]]; then
+			find "${ED}"usr/include -type f \
+				-exec cksum {} + | sort -k2
+		fi
 	}
 
-	local cksum=$(_multilib_header_cksum)
+	local cksum cksum_prev
 	local cksum_file=${T}/.multilib_header_cksum
+	cksum=$(_multilib_header_cksum) || die
 
 	if [[ -f ${cksum_file} ]]; then
-		local cksum_prev=$(< "${cksum_file}")
+		cksum_prev=$(< "${cksum_file}") || die
 
 		if [[ ${cksum} != ${cksum_prev} ]]; then
-			echo "${cksum}" > "${cksum_file}.new"
+			echo "${cksum}" > "${cksum_file}.new" || die
 
 			eerror "Header files have changed between ABIs."
 
@@ -288,7 +292,7 @@ multilib_check_headers() {
 			die "Header checksum mismatch, aborting."
 		fi
 	else
-		echo "${cksum}" > "${cksum_file}"
+		echo "${cksum}" > "${cksum_file}" || die
 	fi
 }
 
@@ -409,9 +413,9 @@ multilib_prepare_wrappers() {
 
 		if [[ -L ${root}/${f} ]]; then
 			# rewrite the symlink target
-			local target=$(readlink "${root}/${f}")
-			local target_dir
-			local target_fn=${target##*/}
+			local target
+			target=$(readlink "${root}/${f}") || die
+			local target_dir target_fn=${target##*/}
 
 			[[ ${target} == */* ]] && target_dir=${target%/*}
 
@@ -453,7 +457,7 @@ multilib_prepare_wrappers() {
 					if [[ ! -f ${ED}/tmp/multilib-include${f} ]]; then
 						dodir "/tmp/multilib-include${dir}"
 						# a generic template
-						cat > "${wrapper}" <<_EOF_
+						cat > "${wrapper}" <<_EOF_ || die
 /* This file is auto-generated by multilib-build.eclass
  * as a multilib-friendly wrapper. For the original content,
  * please see the files that are #included below.
-- 
2.6.3