Prevent symbols from libgcc from being reexported.
Since this was not done earlier, there are binary compatibility concerns
that prevent us from being able to apply this to LP32.
Bug: 11156955
Change-Id: Ie717c3ae4b81c749548a45a993c834e109700b27
diff --git a/libc/Android.mk b/libc/Android.mk
index 1b3965e..7febccd 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -971,6 +971,13 @@
LOCAL_WHOLE_STATIC_LIBRARIES := libc_common
LOCAL_SYSTEM_SHARED_LIBRARIES :=
+# We'd really like to do this for all architectures, but since this wasn't done
+# before, these symbols must continue to be exported on LP32 for binary
+# compatibility.
+LOCAL_LDFLAGS_arm64 := -Wl,--exclude-libs,libgcc.a
+LOCAL_LDFLAGS_mips64 := -Wl,--exclude-libs,libgcc.a
+LOCAL_LDFLAGS_x86_64 := -Wl,--exclude-libs,libgcc.a
+
$(eval $(call patch-up-arch-specific-flags,LOCAL_CFLAGS,libc_common_cflags))
$(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_arch_dynamic_src_files))
$(eval $(call patch-up-arch-specific-flags,LOCAL_SRC_FILES,libc_static_common_src_files))
diff --git a/libm/Android.mk b/libm/Android.mk
index 90b4906..994caa0 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -291,5 +291,12 @@
LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
LOCAL_SYSTEM_SHARED_LIBRARIES := libc
LOCAL_WHOLE_STATIC_LIBRARIES := libm
+
+# We'd really like to do this for all architectures, but since this wasn't done
+# before, these symbols must continue to be exported on LP32 for binary
+# compatibility.
+LOCAL_LDFLAGS_arm64 := -Wl,--exclude-libs,libgcc.a
+LOCAL_LDFLAGS_mips64 := -Wl,--exclude-libs,libgcc.a
+LOCAL_LDFLAGS_x86_64 := -Wl,--exclude-libs,libgcc.a
include $(BUILD_SHARED_LIBRARY)
endif