From ffde764adaa56cf00296857c8fd4a821b6b2e506 Mon Sep 17 00:00:00 2001
From: Julien Ridoux <julien@synclab.org>
Date: Fri, 14 Mar 2014 10:42:35 +1100
Subject: Add phony target to run pre-build hook script

Fix #176
---
 Common.mk | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Common.mk')

diff --git a/Common.mk b/Common.mk
index a94c37f..9aa36b8 100644
--- a/Common.mk
+++ b/Common.mk
@@ -4,6 +4,14 @@
 # (directory and optional filename) exists
 dir_if_exists = $(if $(wildcard $(1)$(2)),$(1))
 
+# Run a shell script if it exists. Stops make on error.
+runscript_if_exists =                                                          \
+    $(if $(wildcard $(1)),                                                     \
+         $(if $(findstring 0,                                                  \
+                  $(lastword $(shell $(abspath $(wildcard $(1))); echo $$?))), \
+              $(info Info: $(1) success),                                      \
+              $(error ERROR: $(1) failed)))
+
 # For message printing: pad the right side of the first argument with spaces to
 # the number of bytes indicated by the second argument.
 space_pad_to = $(shell echo $(1) "                                                      " | head -c$(2))
-- 
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