File add-relro-linker-option.patch of Package mozilla-nss.19863

# HG changeset patch
# Parent  551434b5e83550713a110b3544f8c835cba417cd

diff --git a/coreconf/Linux.mk b/coreconf/Linux.mk
--- a/coreconf/Linux.mk
+++ b/coreconf/Linux.mk
@@ -173,16 +173,22 @@ ifneq ($(OS_TARGET),Android)
 ifeq (2.6,$(firstword $(sort 2.6 $(OS_RELEASE))))
 ifndef FREEBL_NO_DEPEND
 FREEBL_NO_DEPEND = 1
 FREEBL_LOWHASH = 1
 endif
 endif
 endif
 
+# harden DSOs/executables a bit against exploits
+ifeq (2.6,$(firstword $(sort 2.6 $(OS_RELEASE))))
+DSO_LDOPTS+=-Wl,-z,relro
+LDFLAGS	+= -Wl,-z,relro
+endif
+
 USE_SYSTEM_ZLIB = 1
 ZLIB_LIBS = -lz
 
 # The -rpath '$$ORIGIN' linker option instructs this library to search for its
 # dependencies in the same directory where it resides.
 ifeq ($(BUILD_SUN_PKG), 1)
 ifeq ($(USE_64), 1)
 RPATH = -Wl,-rpath,'$$ORIGIN:/opt/sun/private/lib64:/opt/sun/private/lib'