From b737686b2c5277bfa62705c41e71ad60e1d44ae8 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 25 Jan 2016 15:49:31 +0000
Subject: build: use -iremap feature to replace __FILE__ absolute path names in
 packages with ones relative to $(BUILD_DIR)

improves reproducible builds

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48489
---
 rules.mk | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'rules.mk')

diff --git a/rules.mk b/rules.mk
index 11ed80950a..b4bdc0dd6e 100644
--- a/rules.mk
+++ b/rules.mk
@@ -118,6 +118,10 @@ else
   TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
 endif
 
+ifeq ($(or $(CONFIG_EXTERNAL_TOOLCHAIN),$(CONFIG_GCC_VERSION_4_8)),)
+  iremap = -iremap $(1):$(2)
+endif
+
 PACKAGE_DIR:=$(BIN_DIR)/packages
 BUILD_DIR:=$(BUILD_DIR_BASE)/$(TARGET_DIR_NAME)
 STAGING_DIR:=$(TOPDIR)/staging_dir/$(TARGET_DIR_NAME)
-- 
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