005_arm-Allow-disabling-PIE-for-dynamically-linked-executables.patch

From 522207405d45ffd899cca1034d5db11053b4a0cb Mon Sep 17 00:00:00 2001
From: Ricardo Cerqueira <cyanogenmod@cerqueira.org>
Date: Fri, 20 Jul 2012 19:38:16 +0100
Subject: [PATCH] arm: Allow disabling PIE for dynamically linked executables

PIE can and does break some binaries that were built without it,
resulting in relocation-related issues (addressing memory
wrongly assumed to be at a fixed position).

Use this as a last resort measure for compatibility with pre-JB
binary blobs, and only if confirmed to fix a broken executable.
If you're not sure, do NOT enable this on a device.

Change-Id: I3b7001e682a6f7a845e62278fe2afa9ccf5552a4
---
 core/combo/TARGET_linux-arm.mk | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 95b1804..9b1dcc2 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -92,6 +92,12 @@ ifeq ($(FORCE_ARM_DEBUGGING),true)
   $(combo_2nd_arch_prefix)TARGET_thumb_CFLAGS += -marm -fno-omit-frame-pointer
 endif
 
+ifeq ($(TARGET_DISABLE_ARM_PIE),true)
+   PIE_EXECUTABLE_TRANSFORM :=
+else
+   PIE_EXECUTABLE_TRANSFORM := -pie
+endif
+
 android_config_h := $(call select-android-config-h,linux-arm)
 
 $(combo_2nd_arch_prefix)TARGET_GLOBAL_CFLAGS += \
@@ -219,7 +225,7 @@ $(hide) $(PRIVATE_CXX) \
 endef
 
 define $(combo_2nd_arch_prefix)transform-o-to-executable-inner
-$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic -pie \
+$(hide) $(PRIVATE_CXX) -nostdlib -Bdynamic $(PIE_EXECUTABLE_TRANSFORM) \
 	-Wl,-dynamic-linker,/system/bin/linker \
 	-Wl,--gc-sections \
 	-Wl,-z,nocopyreloc \