make: run shell with pipefail

Without pipefail, it is possible to miss failures if the recipes
include pipes.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index d20c7a3f80..91c62a26c8 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,8 @@ SRC_PATH=.
 # we have explicit rules for everything
 MAKEFLAGS += -rR
 
+SHELL = /usr/bin/env bash -o pipefail
+
 # Usage: $(call quiet-command,command and args,"NAME","args to print")
 # This will run "command and args", and either:
 #  if V=1 just print the whole command and args