From f5a394b1192e5104aa4f43a17ca524d69ef5c2da Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 9 Mar 2014 13:19:29 +0000
Subject: [PATCH 1/1] openssl: detect configuration changes and clean build
 tree accordingly (fixes #15067)

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39852 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/libs/openssl/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/package/libs/openssl/Makefile b/package/libs/openssl/Makefile
index fe99a534b8..38679acb2b 100644
--- a/package/libs/openssl/Makefile
+++ b/package/libs/openssl/Makefile
@@ -110,7 +110,13 @@ else
   endif
 endif
 
+STAMP_CONFIGURED := $(STAMP_CONFIGURED)_$(subst $(space),_,$(OPENSSL_OPTIONS))
+
 define Build/Configure
+	[ -f $(STAMP_CONFIGURED) ] || { \
+		rm -f $(PKG_BUILD_DIR)/*.so.* $(PKG_BUILD_DIR)/*.a; \
+		find $(PKG_BUILD_DIR) -name \*.o | xargs rm -f; \
+	}
 	(cd $(PKG_BUILD_DIR); \
 		./Configure $(OPENSSL_TARGET) \
 			--prefix=/usr \
-- 
2.11.0