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Add a method to leave the symbol table in a library.

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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
This commit is contained in:
Christopher Ferris
2014-03-18 14:50:09 -07:00
parent bce52ca5fa
commit a6e2f9322c
9 changed files with 52 additions and 38 deletions
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9
core/dynamic_binary.mk
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@@ -116,6 +116,14 @@ $(strip_output): PRIVATE_OBJCOPY := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_OBJCOPY
$(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 @@ $(strip_output): $(strip_input)
@echo "target Unstripped: $(PRIVATE_MODULE) ($@)"
$(copy-file-to-target-with-cp)
endif
endif
endif # my_strip_module