Android.mk revision 79fd668bb4ddb22432eeda2ebd8d10359013d9a8
1LOCAL_PATH:= $(call my-dir) 2 3# 4# libdl 5# 6 7include $(CLEAR_VARS) 8 9# NOTE: --exclude-libs=libgcc.a makes sure that any symbols libdl.so pulls from 10# libgcc.a are made static to libdl.so. This in turn ensures that libraries that 11# a) pull symbols from libgcc.a and b) depend on libdl.so will not rely on libdl.so 12# to provide those symbols, but will instead pull them from libgcc.a. Specifically, 13# we use this property to make sure libc.so has its own copy of the code from 14# libgcc.a it uses. 15# 16# DO NOT REMOVE --exclude-libs! 17 18LOCAL_LDFLAGS := -Wl,--exclude-libs=libgcc.a -Wl,--version-script=$(LOCAL_PATH)/libdl.map 19 20# for x86, exclude libgcc_eh.a for the same reasons as above 21LOCAL_LDFLAGS_x86 := -Wl,--exclude-libs=libgcc_eh.a 22LOCAL_LDFLAGS_x86_64 := $(LOCAL_LDFLAGS_x86) 23 24LOCAL_SRC_FILES:= libdl.c 25LOCAL_CFLAGS := -Wall -Wextra -Wunused -Werror 26LOCAL_CXX_STL := none 27 28LOCAL_MODULE := libdl 29LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk 30 31# NOTE: libdl needs __aeabi_unwind_cpp_pr0 from libgcc.a but libgcc.a needs a 32# few symbols from libc. Using --no-undefined here results in having to link 33# against libc creating a circular dependency which is removed and we end up 34# with missing symbols. Since this library is just a bunch of stubs, we set 35# LOCAL_ALLOW_UNDEFINED_SYMBOLS to remove --no-undefined from the linker flags. 36LOCAL_ALLOW_UNDEFINED_SYMBOLS := true 37LOCAL_SYSTEM_SHARED_LIBRARIES := 38 39LOCAL_ADDRESS_SANITIZER := false 40include $(BUILD_SHARED_LIBRARY) 41 42# A dummy libdl.a. Need for static executables using the LLVM unwinder. Most 43# functions default to failure, others use a sensible default (dl_iterate_phdr() 44# returns 0, as would happen if the user iterated over every phdr). 45include $(CLEAR_VARS) 46LOCAL_SRC_FILES:= libdl.c 47LOCAL_CFLAGS := -Wall -Wextra -Wunused -Werror 48LOCAL_CXX_STL := none 49 50LOCAL_MODULE := libdl 51LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk 52LOCAL_ADDRESS_SANITIZER := false 53include $(BUILD_STATIC_LIBRARY) 54