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Explicitly add lld's relr relocation flags for Android Pie and above

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Bug: http://b/119086751

https://android-review.googlesource.com/c/837025 disabled lld relocation
packing globally and enabled it for soong modules targeting pie and
above.  Turn it on for Android.mk modules as well.

Test: grep for -Wl,pack-dyn-relocs=android in
      out/build-aosp_<device>.ninja

Change-Id: I81b8625073aa6b364219b8cf3122b69c95ec7589
This commit is contained in:
Pirama Arumuga Nainar 2019-07-30 22:32:20 -07:00
parent d69e849c9b
commit bf2af95f73
2 changed files with 12 additions and 1 deletions
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4
core/binary.mk
View file

@ -1614,7 +1614,9 @@ my_target_global_cppflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLO
ifeq ($(my_use_clang_lld),true)
my_target_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLOBAL_LLDFLAGS)
include $(BUILD_SYSTEM)/pack_dyn_relocs_setup.mk
ifeq ($(my_pack_module_relocations),false)
ifeq ($(my_pack_module_relocations),true)
my_target_global_ldflags += -Wl,--pack-dyn-relocs=android+relr -Wl,--use-android-relr-tags
else
my_target_global_ldflags += -Wl,--pack-dyn-relocs=none
endif
else

9
core/pack_dyn_relocs_setup.mk
View file

@ -32,3 +32,12 @@ ifdef LOCAL_IS_HOST_MODULE
# Do not pack relocations on host modules
my_pack_module_relocations := false
endif
# Lld relocation packing cannot be enabled for binaries before Android Pie.
ifneq ($(LOCAL_SDK_VERSION),)
ifneq ($(LOCAL_SDK_VERSION),current)
ifeq ($(call math_lt,$(LOCAL_SDK_VERSION),28),true)
my_pack_module_relocations := false
endif
endif
endif