Add a method to leave the symbol table in a library.
When LOCAL_STRIP_MODULE := keep_symbols is set, then the normal strip rules
will be modified so that only the .debug_* sections are removed. The original
symbol table is left alone.
This allows the compilation of certain libraries so that libbacktrace library
can provide meaningful names to functions.
Bug: 12958251
Change-Id: I82bdc304a463012e29086325ccb51163464cb4a9
diff --git a/core/dynamic_binary.mk b/core/dynamic_binary.mk
index 1d3b99e..32f2c91 100644
--- a/core/dynamic_binary.mk
+++ b/core/dynamic_binary.mk
@@ -116,6 +116,14 @@
$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
$(transform-to-stripped)
else
+ifeq ($(my_strip_module),keep_symbols)
+# Strip only the debug frames, but leave the symbol table.
+$(strip_output): PRIVATE_STRIP := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
+$(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY)
+$(strip_output): PRIVATE_READELF := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_READELF)
+$(strip_output): $(strip_input) | $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_STRIP)
+ $(transform-to-stripped-keep-symbols)
+else
# Don't strip the binary, just copy it. We can't skip this step
# because a copy of the binary must appear at LOCAL_BUILT_MODULE.
#
@@ -130,6 +138,7 @@
@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
$(copy-file-to-target-with-cp)
endif
+endif
endif # my_strip_module