platform_build/core/check_elf_file.mk
Steven Moreland 52c2371ae8 Reland "check_elf_file: check prebuilts are aligned"
This reverts commit 411fb17537.

Reason for revert: reland after other targets are fixed b/342466032

Bug: 342466032
Test: build, w/ and w/o checking enabled

Change-Id: I830166faffec781cf6cc4fea47140a60b0a12466
2024-06-04 17:26:12 +00:00

73 lines
3.1 KiB
Makefile

# Check the correctness of the prebuilt ELF files
#
# This check ensures that DT_SONAME matches with the filename, DT_NEEDED
# matches the shared libraries specified in LOCAL_SHARED_LIBRARIES, and all
# undefined symbols in the prebuilt binary can be found in one of the shared
# libraries specified in LOCAL_SHARED_LIBRARIES.
#
# Inputs:
# - LOCAL_ALLOW_UNDEFINED_SYMBOLS
# - LOCAL_IGNORE_MAX_PAGE_SIZE
# - LOCAL_BUILT_MODULE
# - LOCAL_IS_HOST_MODULE
# - LOCAL_MODULE_CLASS
# - TARGET_CHECK_PREBUILT_MAX_PAGE_SIZE
# - TARGET_MAX_PAGE_SIZE_SUPPORTED
# - intermediates
# - my_installed_module_stem
# - my_prebuilt_src_file
# - my_check_elf_file_shared_lib_files
# - my_system_shared_libraries
ifndef LOCAL_IS_HOST_MODULE
ifneq ($(filter $(LOCAL_MODULE_CLASS),SHARED_LIBRARIES EXECUTABLES NATIVE_TESTS),)
check_elf_files_stamp := $(intermediates)/check_elf_files.timestamp
$(check_elf_files_stamp): PRIVATE_SONAME := $(if $(filter $(LOCAL_MODULE_CLASS),SHARED_LIBRARIES),$(my_installed_module_stem))
$(check_elf_files_stamp): PRIVATE_ALLOW_UNDEFINED_SYMBOLS := $(LOCAL_ALLOW_UNDEFINED_SYMBOLS)
$(check_elf_files_stamp): PRIVATE_SYSTEM_SHARED_LIBRARIES := $(my_system_shared_libraries)
# PRIVATE_SHARED_LIBRARY_FILES are file paths to built shared libraries.
# In addition to $(my_check_elf_file_shared_lib_files), some file paths are
# added by `resolve-shared-libs-for-elf-file-check` from `core/main.mk`.
$(check_elf_files_stamp): PRIVATE_SHARED_LIBRARY_FILES := $(my_check_elf_file_shared_lib_files)
# For different page sizes to work, we must support a larger max page size
# as well as properly reflect page size at runtime. Limit this check, since many
# devices set the max page size (for future proof) than actually use the
# larger page size.
ifeq ($(strip $(TARGET_CHECK_PREBUILT_MAX_PAGE_SIZE)),true)
ifeq ($(strip $(LOCAL_IGNORE_MAX_PAGE_SIZE)),true)
$(check_elf_files_stamp): PRIVATE_MAX_PAGE_SIZE :=
else
$(check_elf_files_stamp): PRIVATE_MAX_PAGE_SIZE := $(TARGET_MAX_PAGE_SIZE_SUPPORTED)
endif
else
$(check_elf_files_stamp): PRIVATE_MAX_PAGE_SIZE :=
endif
$(check_elf_files_stamp): $(my_prebuilt_src_file) $(my_check_elf_file_shared_lib_files) $(CHECK_ELF_FILE) $(LLVM_READOBJ)
@echo Check prebuilt ELF binary: $<
$(hide) mkdir -p $(dir $@)
$(hide) rm -f $@
$(hide) $(CHECK_ELF_FILE) \
--skip-bad-elf-magic \
--skip-unknown-elf-machine \
$(if $(PRIVATE_MAX_PAGE_SIZE),--max-page-size=$(PRIVATE_MAX_PAGE_SIZE)) \
$(if $(PRIVATE_SONAME),--soname $(PRIVATE_SONAME)) \
$(foreach l,$(PRIVATE_SHARED_LIBRARY_FILES),--shared-lib $(l)) \
$(foreach l,$(PRIVATE_SYSTEM_SHARED_LIBRARIES),--system-shared-lib $(l)) \
$(if $(PRIVATE_ALLOW_UNDEFINED_SYMBOLS),--allow-undefined-symbols) \
--llvm-readobj=$(LLVM_READOBJ) \
$<
$(hide) touch $@
CHECK_ELF_FILES.$(check_elf_files_stamp) := 1
ifneq ($(strip $(LOCAL_CHECK_ELF_FILES)),false)
ifneq ($(strip $(BUILD_BROKEN_PREBUILT_ELF_FILES)),true)
$(LOCAL_BUILT_MODULE): $(check_elf_files_stamp)
check-elf-files: $(check_elf_files_stamp)
endif # BUILD_BROKEN_PREBUILT_ELF_FILES
endif # LOCAL_CHECK_ELF_FILES
endif # SHARED_LIBRARIES, EXECUTABLES, NATIVE_TESTS
endif # !LOCAL_IS_HOST_MODULE