From 05e085d5ab4161c6d1c630e36721e5ae1bb32b0f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-S=C3=A9bastien=20P=C3=A9dron?=
 <jean-sebastien@rabbitmq.com>
Date: Thu, 22 Oct 2015 15:16:08 +0200
Subject: Use `:` as a noop instead of `echo -n`

The `-n` flag is not standard and not portable. It is supported by many
Bourne shell to suppress the trailing newline character. But some old
shells do not support this and "-n" is printed.

This is the case for instance on some old versions of Mac OS X where
`/bin/sh` is Bash 3.2.
---
 core/core.mk | 2 +-
 core/deps.mk | 4 ++--
 core/erlc.mk | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/core/core.mk b/core/core.mk
index 407b940..17cdf1e 100644
--- a/core/core.mk
+++ b/core/core.mk
@@ -82,7 +82,7 @@ all:: deps app rel
 
 # Noop to avoid a Make warning when there's nothing to do.
 rel::
-	$(verbose) echo -n
+	$(verbose) :
 
 check:: clean app tests
 
diff --git a/core/deps.mk b/core/deps.mk
index 76f54d7..bf39be1 100644
--- a/core/deps.mk
+++ b/core/deps.mk
@@ -62,7 +62,7 @@ endif
 	$(verbose) mkdir -p $(ERLANG_MK_TMP)
 	$(verbose) for dep in $(ALL_DEPS_DIRS) ; do \
 		if grep -qs ^$$dep$$ $(ERLANG_MK_TMP)/deps.log; then \
-			echo -n; \
+			:; \
 		else \
 			echo $$dep >> $(ERLANG_MK_TMP)/deps.log; \
 			if [ -f $$dep/GNUmakefile ] || [ -f $$dep/makefile ] || [ -f $$dep/Makefile ]; then \
@@ -127,7 +127,7 @@ define dep_autopatch_erlang_mk
 endef
 else
 define dep_autopatch_erlang_mk
-	echo -n
+	:
 endef
 endif
 
diff --git a/core/erlc.mk b/core/erlc.mk
index 02524b4..39ad574 100644
--- a/core/erlc.mk
+++ b/core/erlc.mk
@@ -78,7 +78,7 @@ endef
 endif
 
 app-build: ebin/$(PROJECT).app
-	$(verbose) echo -n
+	$(verbose) :
 
 # Source files.
 
-- 
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