build: Activate ONESHELL.

This instructs "make" to pass all the lines in the recipe to a single
invocation of the shell, which is generally a good idea since it
speeds up the build a bit.

diff --git a/Makefile b/Makefile
index 427850561fea03bd2426ff364c6c56f84bcbf483..89af3155989c81a5ce3adab83ef6f1f6914f14d8 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,8 @@ MAKEFLAGS += -Rr
 ifeq ("$(origin CC)", "default")
         CC := cc
 endif
+.ONESHELL:
+.SHELLFLAGS := -ec
 
 PREFIX ?= /usr/local
 M4 := m4